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I04-2-03 ENGINE MANAGEMENT                       SYSTEM I• 06.01 Check Electronic Fuel Injection EFI System        Pressur...
I04-2-03 ENGINE MANAGEMENT                     SYSTEM I• Electronic Fuel Injection System.• EFI adalah satu sistem untuk m...
I04-2-03 ENGINE MANAGEMENT                          SYSTEM I   • SYSTEM DESCRIPTION                     FUEL PUMP         ...
I04-2-03 ENGINE MANAGEMENT                          SYSTEM I • SYSTEM DESCRIPTIONNama lain bagi sistem Electronik Fuel Inj...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM I• SYSTEM DESCRIPTION          Awek !!!!          Cun bau      Kenal o...
I04-2-03 ENGINE MANAGEMENT                         SYSTEM I• SYSTEM DESCRIPTIONKebaikan Electronic Fuel Injection• Pencamp...
I04-2-03 ENGINE MANAGEMENT                         SYSTEM I•    SYSTEM DESCRIPTION•    EFI terbahagi kepada 3 jenis:e.   D...
I04-2-03 ENGINE MANAGEMENT                            SYSTEM I• ‘D’ JECTRONIC            Pressure                         ...
I04-2-03 ENGINE MANAGEMENT                      SYSTEM Ib.   L Jectronic.     ‘L’ berasal dari perkataan German iaitu Lulf...
I04-2-03 ENGINE MANAGEMENT                            SYSTEM I• ‘L’ JECTRONIC                                           Ai...
I04-2-03 ENGINE MANAGEMENT                        SYSTEM Ic.   ‘K’ Jectronic.     ‘K’ berasal dari perkataan German iaitu ...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM I• ‘K’ JECTRONIC                                     13
I04-2-03 ENGINE MANAGEMENT                   SYSTEM I•   EFI mempunyai 3 binaan asas:4. Fuel System5. Air Induction System...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM I• SYSTEM DESCRIPTION                                     15
I04-2-03 ENGINE MANAGEMENT                                   SYSTEM I• SYSTEM DESCRIPTION                                 ...
I04-2-03 ENGINE MANAGEMENT                                            SYSTEM I  • SYSTEM DESCRIPTION                      ...
I04-2-03 ENGINE MANAGEMENT                 SYSTEM ISPI (SINGLE POINT   MPI (MULTI POINT INJECTION)INJECTION)              ...
I04-2-03 ENGINE MANAGEMENT                        SYSTEM I• FUEL SYSTEM• Sistem ini terdiri daripada electromagnetic injec...
I04-2-03 ENGINE MANAGEMENT                          SYSTEM I  • FUEL SYSTEM• Bahanapi di pump melalui pam bahanapi, melalu...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM I• FUEL SYSTEM                                     21
I04-2-03 ENGINE MANAGEMENT                         SYSTEM I• FUEL SYSTEM            VARIABLE RESISTOR                     ...
I04-2-03 ENGINE MANAGEMENT                       SYSTEM I• FUEL SYSTEM LAY OUT.                                           ...
I04-2-03 ENGINE MANAGEMENT                          SYSTEM I 1.   FUEL PUMP                                  Check valve  ...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM I• FUEL PUMP                                     25
I04-2-03 ENGINE MANAGEMENT                   SYSTEM I• FUEL PUMP                                     26
I04-2-03 ENGINE MANAGEMENT                       SYSTEM I2. PRESSURE REGULATOR• Berada pada bahagian hujung fuel delivery ...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM I2. PRESSURE REGULATOR                                     28
I04-2-03 ENGINE MANAGEMENT                   SYSTEM I3. PULSATION DAMPER                      •Berada pada bahagian hujung...
I04-2-03 ENGINE MANAGEMENT                              SYSTEM I4. FUEL INJECTOR       Fuel filter      Electrical      co...
I04-2-03 ENGINE MANAGEMENT                       SYSTEM I• FUEL INJECTOR   • MDH 145 ~ ISWARA / WIRA 1.3/1.5       Fuel fi...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM I• FUEL INJECTOR                    • Tujuan  utama Inject bahanapi   ...
I04-2-03 ENGINE MANAGEMENT                        SYSTEM I5. COLD START INJECTOR (TOYOTA)• Berfungsi ketika enjin dalam ke...
I04-2-03 ENGINE MANAGEMENT                       SYSTEM I6. COLD START INJECTOR TIME SWITCH (TOYOTA) • Cold start injector...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM I• COLD START INJECTOR TIME SWITCH (TOYOTA)                           ...
I04-2-03 ENGINE MANAGEMENT                       SYSTEM I7. SOLENOID RESISTOR (TOYOTA)• Satu lagi komponen yang terlibatda...
I04-2-03 ENGINE MANAGEMENT                    SYSTEM I8. FUEL FILTER                       • Fuel filter bertujuan untuk  ...
I04-2-03 ENGINE MANAGEMENT                       SYSTEM I• AIR INDUCTION SYSTEM1. IDLE SPEED CONTROL SERVO (DC MOTOR)  •Be...
I04-2-03 ENGINE MANAGEMENT                        SYSTEM I• AIR INDUCTION SYSTEM1. IDLE SPEED CONTROL SERVO (STEPPER MOTOR...
I04-2-03 ENGINE MANAGEMENT                       SYSTEM I• AIR INDUCTION SYSTEM• ISC SERVO (DC MOTOR/STEEPER MOTOR) • Meme...
I04-2-03 ENGINE MANAGEMENT                       SYSTEM I• AIR INDUCTION SYSTEM• ISC SERVO (DC MOTOR/STEEPER MOTOR)  Jumla...
I04-2-03 ENGINE MANAGEMENT                    SYSTEM I• AIR INDUCTION SYSTEM• ISC SERVO (DC MOTOR/STEEPER MOTOR)          ...
I04-2-03 ENGINE MANAGEMENT                       SYSTEM I• AIR INDUCTION SYSTEM• ISC SERVO (DC MOTOR/STEEPER MOTOR)    Jum...
I04-2-03 ENGINE MANAGEMENT                    SYSTEM I• AIR INDUCTION SYSTEM• ISC SERVO (DC MOTOR/STEEPER MOTOR)          ...
I04-2-03 ENGINE MANAGEMENT                        SYSTEM I• AIR INDUCTION SYSTEM• ISC SERVO (DC MOTOR/STEEPER MOTOR)Fast I...
I04-2-03 ENGINE MANAGEMENT                      SYSTEM I• AIR INDUCTION SYSTEM• ISC SERVO (DC MOTOR/STEEPER MOTOR)Adjustin...
I04-2-03 ENGINE MANAGEMENT                       SYSTEM I• AIR INDUCTION SYSTEM2. AIR VALVE (Bimetal type)( TOYOTA )      ...
I04-2-03 ENGINE MANAGEMENT                      SYSTEM I• AIR INDUCTION SYSTEM• AIR VALVE (Bimetal type)( TOYOTA )        ...
I04-2-03 ENGINE MANAGEMENT                      SYSTEM I• AIR INDUCTION SYSTEM• AIR VALVE (Bimetal type)( TOYOTA )        ...
I04-2-03 ENGINE MANAGEMENT                      SYSTEM I• AIR INDUCTION SYSTEM• AIR VALVE ( Thermo Wax type )( TOYOTA/PROT...
I04-2-03 ENGINE MANAGEMENT                     SYSTEM I• AIR INDUCTION SYSTEM3. THROTTLE BODY                             ...
I04-2-03 ENGINE MANAGEMENT                    SYSTEM I• AIR INDUCTION SYSTEM• THROTTLE BODY                               ...
I04-2-03 ENGINE MANAGEMENT                     SYSTEM I• AIR INDUCTION SYSTEM4. AIR FILTER• Bertujuan untuk menapis kekoto...
I04-2-03 ENGINE MANAGEMENT                       SYSTEM I•    ELECTRONIC CONTROL SYSTEM1. ELECTRONIC CONTROL UNIT•    Mene...
I04-2-03 ENGINE MANAGEMENT                         SYSTEM I• ELECTRONIC CONTROL SYSTEM4. INTAKE AIR TEMPERATURE SENSOR•   ...
I04-2-03 ENGINE MANAGEMENT                        SYSTEM I•    ELECTRONIC CONTROL SYSTEM5. BAROMETRIC PRESSURESENSOR•Menuk...
I04-2-03 ENGINE MANAGEMENT                        SYSTEM I• ELECTRONIC CONTROL SYSTEM6. WATER/COOLANTTEMPERATURE SENSOR•Me...
I04-2-03 ENGINE MANAGEMENT                    SYSTEM I• ELECTRONIC CONTROL SYSTEM• WATER/COOLANT TEMPERATURE SENSOR       ...
I04-2-03 ENGINE MANAGEMENT                    SYSTEM I• ELECTRONIC CONTROL SYSTEM• WATER/COOLANT TEMPERATURE SENSOR       ...
I04-2-03 ENGINE MANAGEMENT                         SYSTEM I• ELECTRONIC CONTROL SYSTEM7. VACUM SENSOR( Untuk EFI jenis D J...
I04-2-03 ENGINE MANAGEMENT                       SYSTEM I• ELECTRONIC CONTROL SYSTEM• VACUM SENSOR• Nama lain bagi sensor ...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM I• ELECTRONIC CONTROL SYSTEM• VACUM SENSOR                            ...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM I• ELECTRONIC CONTROL SYSTEM• VACUM SENSOR                            ...
I04-2-03 ENGINE MANAGEMENT                        SYSTEM I• ELECTRONIC CONTROL SYSTEM8. AIR FLOW METER / SENSOR( Untuk EFI...
I04-2-03 ENGINE MANAGEMENT                          SYSTEM I • ELECTRONIC CONTROL SYSTEM a. AIR FLOW METER• Dilokasikan se...
I04-2-03 ENGINE MANAGEMENT                        SYSTEM I• ELECTRONIC CONTROL SYSTEM• AIR FLOW METER• Udara yang masuk ak...
I04-2-03 ENGINE MANAGEMENT                    SYSTEM I• ELECTRONIC CONTROL SYSTEM• AIR FLOW METER• PENERANGAN LANJUTAKAN D...
I04-2-03 ENGINE MANAGEMENT                    SYSTEM I• ELECTRONIC CONTROL SYSTEM• AIR FLOW METER                         ...
I04-2-03 ENGINE MANAGEMENT                        SYSTEM I• ELECTRONIC CONTROL SYSTEMb. AIR FLOW SENSOR (KARMAN VORTEX)   ...
I04-2-03 ENGINE MANAGEMENT                       SYSTEM I• ELECTRONIC CONTROL SYSTEM• AIR FLOW SENSOR (KARMAN VORTEX)• Raj...
I04-2-03 ENGINE MANAGEMENT                    SYSTEM I• ELECTRONIC CONTROL SYSTEM• AIR FLOW SENSOR (KARMAN VORTEX)        ...
I04-2-03 ENGINE MANAGEMENT                    SYSTEM I• ELECTRONIC CONTROL SYSTEM• AIR FLOW SENSOR (KARMAN VORTEX)        ...
I04-2-03 ENGINE MANAGEMENT                         SYSTEM I• ELECTRONIC CONTROL SYSTEM• AIR FLOW SENSOR (HOT WIRE)• Ini ad...
I04-2-03 ENGINE MANAGEMENT                        SYSTEM I• ELECTRONIC CONTROL SYSTEM•   AIR FLOW SENSOR (HOT WIRE)• ECU a...
I04-2-03 ENGINE MANAGEMENT                      SYSTEM I• ELECTRONIC CONTROL SYSTEM9. DETONATION / KNOCKING SENSOR• Menggu...
I04-2-03 ENGINE MANAGEMENT                      SYSTEM I• ELECTRONIC CONTROL SYSTEM•   DETONATION / KNOCKING SENSOR       ...
I04-2-03 ENGINE MANAGEMENT                    SYSTEM I• ELECTRONIC CONTROL SYSTEM• DETONATION / KNOCKING SENSOR           ...
I04-2-03 ENGINE MANAGEMENT                       SYSTEM I• ELECTRONIC CONTROL SYSTEM10. THROTTLE POSITION SENSOR / IDLE SW...
I04-2-03 ENGINE MANAGEMENT                       SYSTEM I• ELECTRONIC CONTROL SYSTEM• THROTTLE POSITION SENSOR / IDLE SWIT...
I04-2-03 ENGINE MANAGEMENT                     SYSTEM I• ELECTRONIC CONTROL SYSTEM• THROTTLE POSITION SENSOR / IDLE SWITCH...
I04-2-03 ENGINE MANAGEMENT                     SYSTEM I• ELECTRONIC CONTROL SYSTEM• THROTTLE POSITION SENSOR / IDLE SWITCH...
I04-2-03 ENGINE MANAGEMENT                     SYSTEM I• ELECTRONIC CONTROL SYSTEM• THROTTLE POSITION SENSOR / IDLE SWITCH...
I04-2-03 ENGINE MANAGEMENT                        SYSTEM I• ELECTRONIC CONTROL SYSTEM11. TDC / CAM ANGLE SENSOR• Mengesan ...
I04-2-03 ENGINE MANAGEMENT                                  SYSTEM I• ELECTRONIC CONTROL SYSTEM• TDC / CAM ANGLE SENSOR No...
I04-2-03 ENGINE MANAGEMENT                       SYSTEM I• ELECTRONIC CONTROL SYSTEM12. CRANK ANGLE SENSOR  • Mengesan ked...
I04-2-03 ENGINE MANAGEMENT                    SYSTEM I• ELECTRONIC CONTROL SYSTEM• CRANK ANGLE SENSOR                     ...
I04-2-03 ENGINE MANAGEMENT                    SYSTEM I• ELECTRONIC CONTROL SYSTEM• CRANK ANGLE SENSOR                     ...
I04-2-03 ENGINE MANAGEMENT                      SYSTEM I• ELECTRONIC CONTROL SYSTEM13. MIXTURE ADJUSTING SREW(VARIABLE RES...
I04-2-03 ENGINE MANAGEMENT                    SYSTEM I• ELECTRONIC CONTROL SYSTEM• MIXTURE ADJUSTING SREW(VARIABLE RESISTO...
I04-2-03 ENGINE MANAGEMENT                        SYSTEM I• ELECTRONIC CONTROL SYSTEM14. VEHICLE SPEED SENSOR • Mengesan k...
I04-2-03 ENGINE MANAGEMENT                    SYSTEM I• ELECTRONIC CONTROL SYSTEM• VEHICLE SPEED SENSOR                   ...
I04-2-03 ENGINE MANAGEMENT                    SYSTEM I• ELECTRONIC CONTROL SYSTEM• VEHICLE SPEED SENSOR                   ...
I04-2-03 ENGINE MANAGEMENT                      SYSTEM I• ELECTRONIC CONTROL SYSTEM15. POWER STEERING FLUID PRESSURE SENSO...
I04-2-03 ENGINE MANAGEMENT                    SYSTEM I• ELECTRONIC CONTROL SYSTEM• POWER STEERING FLUID PRESSURE SENSOR   ...
I04-2-03 ENGINE MANAGEMENT                        SYSTEM I • ELECTRONIC CONTROL SYSTEM 16. SENSOR OXYGEN• Mengesan keadaan...
I04-2-03 ENGINE MANAGEMENT                          SYSTEM I  • ELECTRONIC CONTROL SYSTEM  17. VARIABLE INDUCTION CONTROL ...
I04-2-03 ENGINE MANAGEMENT                      SYSTEM I• ELECTRONIC CONTROL SYSTEM18. EXHAUST GAS TEMPERATURE SENSOR  • B...
I04-2-03 ENGINE MANAGEMENT           SYSTEM I                             98
I04-2-03 ENGINE MANAGEMENT                     SYSTEM I•   KUIZ I.   Apakah yang anda faham tentang EFI system.          ...
I04-2-03 ENGINE MANAGEMENT                      SYSTEM I•    KUIZ II.    Berikan 4 komponen yang terlibat dalam fuel syst...
I04-2-03 ENGINE MANAGEMENT            SYSTEM I  SISTEM PANCITAN BAHANAPI ELECTRONIKBAGAIMANA MEMBACA ELECTRICAL CIRCUIT DI...
I04-2-03 ENGINE MANAGEMENT                        SYSTEM I      SYSTEM ELECTRICAL FUEL INJECTION CONTROL      Bagaimana Ca...
I04-2-03 ENGINE MANAGEMENT                       SYSTEM I      SYSTEM ELECTRICAL FUEL INJECTION CONTROL      Bagaimana Car...
I04-2-03 ENGINE MANAGEMENT                      SYSTEM I     SYSTEM ELECTRICAL FUEL INJECTION CONTROL     Bagaimana Cara M...
I04-2-03 ENGINE MANAGEMENT                        SYSTEM I      SYSTEM ELECTRICAL FUEL INJECTION CONTROL      Bagaimana Ca...
I04-2-03 ENGINE MANAGEMENT                        SYSTEM I      SYSTEM ELECTRICAL FUEL INJECTION CONTROL      Bagaimana Ca...
I04-2-03 ENGINE MANAGEMENT                 SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit ...
I04-2-03 ENGINE MANAGEMENT                     SYSTEM I    SYSTEM ELECTRICAL FUEL INJECTION CONTROL    Bagaimana Cara Memb...
I04-2-03 ENGINE MANAGEMENT                 SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit ...
I04-2-03 ENGINE MANAGEMENT                     SYSTEM I    SYSTEM ELECTRICAL FUEL INJECTION CONTROL    Bagaimana Cara Memb...
I04-2-03 ENGINE MANAGEMENT                  SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit...
I04-2-03 ENGINE MANAGEMENT                  SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit...
I04-2-03 ENGINE MANAGEMENT                  SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit...
I04-2-03 ENGINE MANAGEMENT                  SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit...
I04-2-03 ENGINE MANAGEMENT                  SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit...
I04-2-03 ENGINE MANAGEMENT                 SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit ...
I04-2-03 ENGINE MANAGEMENT                 SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit ...
I04-2-03 ENGINE MANAGEMENT                  SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit...
I04-2-03 ENGINE MANAGEMENT                  SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit...
I04-2-03 ENGINE MANAGEMENT                  SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit...
I04-2-03 ENGINE MANAGEMENT                  SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit...
I04-2-03 ENGINE MANAGEMENT                     SYSTEM I   SYSTEM ELECTRICAL FUEL INJECTION CONTROL   Bagaimana Cara Membac...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circui...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circui...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circui...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circui...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circui...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circui...
I04-2-03 ENGINE MANAGEMENT                       SYSTEM I    SYSTEM ELECTRICAL FUEL INJECTION CONTROL    Bagaimana Cara Me...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circui...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circui...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circui...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circui...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circui...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circui...
I04-2-03 ENGINE MANAGEMENT                      SYSTEM I   SYSTEM ELECTRICAL FUEL INJECTION CONTROL   Bagaimana Cara Memba...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circui...
I04-2-03 ENGINE MANAGEMENT                    SYSTEM I SYSTEM ELECTRICAL FUEL INJECTION CONTROL Bagaimana Cara Membaca Cir...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circui...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circui...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circui...
I04-2-03 ENGINE MANAGEMENT                      SYSTEM I     SYSTEM ELECTRICAL FUEL INJECTION CONTROL     Bagaimana Cara M...
I04-2-03 ENGINE MANAGEMENT                   SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circui...
I04-2-03 ENGINE MANAGEMENT                  SYSTEM ISISTEM PANCITAN ELECTRONIKPower Supply                                ...
I04-2-03 ENGINE MANAGEMENT                  SYSTEM ISISTEM PANCITAN ELECTRONIKPower Supply                                ...
I04-2-03 ENGINE MANAGEMENT                  SYSTEM ISISTEM PANCITAN ELECTRONIKPower Supply ECU                            ...
I04-2-03 ENGINE MANAGEMENT                  SYSTEM ISISTEM PANCITAN ELECTRONIKPower Supply Ground                         ...
 Produces a 5V pulse  corresponding to each piston  at TDC 2 pulses per revolution of the  crankshaft. Used to determin...
Flux screening plate                                        PHOTO DIODE         Vane                                      ...
No 1 cylinderTDC detection slit(Longer then other)                                                               TDC detec...
151
Reed switch type( 4G92 & 4G93 )    Magnetic resistive element type                   ( 4G63 )                             ...
SEQUENTIAL INJECTION                                    ENGINE AT IDLING                             No.1 TDC         No.3...
SIMULTANEOUS INJECTION                          INJECTION UPON START CRANKING                                             ...
SIMULTANEOUS INJECTION                               INJECTION DURING COLD START                                          ...
SIMULTANEOUS INJECTION                      INJECTION DURING ACCELERATION                                                 ...
157
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Efi

  1. 1. 1
  2. 2. I04-2-03 ENGINE MANAGEMENT SYSTEM I• 06.01 Check Electronic Fuel Injection EFI System Pressure• 06.02 Replace Electrical Fuel Pump• 06.03 Replace Fuel Injectors• 06.04 Replace Air Flow Meter• 06.05 Replace Electronic Fuel Injection (EFI) Sensors• 06.06 Replace Electronic Fuel Injection (EFI) Relays• 06.07 Check Electronic Fuel Injection (EFI) Wiring System 2
  3. 3. I04-2-03 ENGINE MANAGEMENT SYSTEM I• Electronic Fuel Injection System.• EFI adalah satu sistem untuk mendapatkan nisbah campuran udara dan bahan api secara electronic.• System ini di lengkapi dengan pengawalan Electronic Control Unit (ECU) yang telah di programkan untuk mengawal sensor dan juga actuator.• Sistem EFI digunakan untuk mendapatkan exhaust emission yang lebih baik serta penggunaan bahan api yang lebih ekonomi tanpa menjejaskan prestasi kenderaan. 3
  4. 4. I04-2-03 ENGINE MANAGEMENT SYSTEM I • SYSTEM DESCRIPTION FUEL PUMP 1.FUEL PRESSURE CONTROL FUEL PRESSURE REGULATOR 2.INTAKE AIR CONTROL THROTTLE VALVE (ISC SERVO) 3.FUEL INJECTION CONTROL INJECTORS 4.IDLE SPEED CONTROLSENSOR ECU 5.POWER SUPPLY CONTROL CONTROL RELAY 6.IGNITION TIMING CONTROL POWER TRANSISTER 7.AIR CONDITIONER RELAY AIR CONDITIONER RELAY CONTROL 4
  5. 5. I04-2-03 ENGINE MANAGEMENT SYSTEM I • SYSTEM DESCRIPTIONNama lain bagi sistem Electronik Fuel InjectionMPI - Multi Point Injection (Proton)Cares - Clean Air Regulation Emmision SystemPGM-FI - Program Fuel Injection ( Honda)EFI - Electronic Fuel Injection (Toyota)ECCS - Electronic Concentrated Engine Control System (Datsun)EGI - Electronic Gasoline Injection (Mazda) 5
  6. 6. I04-2-03 ENGINE MANAGEMENT SYSTEM I• SYSTEM DESCRIPTION Awek !!!! Cun bau Kenal ok ni….. Wangi la… Lega rasanya.. 6
  7. 7. I04-2-03 ENGINE MANAGEMENT SYSTEM I• SYSTEM DESCRIPTIONKebaikan Electronic Fuel Injection• Pencampuran Udara dan bahanapi yang tepat pada semua kelajuan (Fuel Ekonomy).• Pembetulan yang cekap (Dikawal oleh ECU) apabila keadaan berubah.• Tindak balas pancitan yang cepat.• Pengawalan Emission Yang baik.• Pengagihan pencampuran udara/bahanapi yang cekap dan tepat pada setiap cylinder. 7
  8. 8. I04-2-03 ENGINE MANAGEMENT SYSTEM I• SYSTEM DESCRIPTION• EFI terbahagi kepada 3 jenis:e. D Jectronic. ‘D’ berasal dari perkataan German iaitu Druck bermaksud vakum/tekanan. Menggunakan vacum sensor untuk mengetahui jumlah udara yang masuk dengan cara mengesan jumlah vacum yang terhasil pada air intake chamber. Kebiasaanya vacum dikesan selepas throttle body/throttle valve. 8
  9. 9. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ‘D’ JECTRONIC Pressure Injector Amount Sensor Intake Manifold Injector Intake Tube Pressure Sense Quantity Pressure of air Engine Speed used Pressure Sensor Engine Iswara 1.3 / 1.5 UK Wira 1.3 / 1.5 EMS Waja 1.6 / 1.8 Engine Control Unit 9
  10. 10. I04-2-03 ENGINE MANAGEMENT SYSTEM Ib. L Jectronic. ‘L’ berasal dari perkataan German iaitu Lulf bermaksud udara. Menggunakan air flow meter/sensor untuk mengetahui jumlah udara yang masuk dengan cara mengesan secara terus jumlah/kuantiti udara yang masuk. Kebiasaanya air flow meter/sensor dilokasikan selepas air filter dan sebelum throttle body. 10
  11. 11. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ‘L’ JECTRONIC Air Flow Meter Injector Amount Intake Manifold Injector Intake Tube Pressure Engine Speed Use Karman Vortex Principle Engine Sense Quantity of air used Air Flow Sensor Wira 4G9 / 4G6 / 6A12 Engine Control Unit 11
  12. 12. I04-2-03 ENGINE MANAGEMENT SYSTEM Ic. ‘K’ Jectronic. ‘K’ berasal dari perkataan German iaitu kontinous bermaksud berterusan.Menggunakan sensor plate untuk mengetahui jumlah udara.Sensor plate bersambung secara terus dengan control plunger yang mengawal laluan bahan api. Control plunger mengawal laluan bahan api berdasarkan pergerakan sensor plate. Semakin besar pergerakan sensor plate semakin besar bukaan laluan bahan api. 12
  13. 13. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ‘K’ JECTRONIC 13
  14. 14. I04-2-03 ENGINE MANAGEMENT SYSTEM I• EFI mempunyai 3 binaan asas:4. Fuel System5. Air Induction System6. Electronic Control System 14
  15. 15. I04-2-03 ENGINE MANAGEMENT SYSTEM I• SYSTEM DESCRIPTION 15
  16. 16. I04-2-03 ENGINE MANAGEMENT SYSTEM I• SYSTEM DESCRIPTION ENGINE CONTROL UNIT No. 1 injectorAir flow sensor 2. Fuel injection control No. 2 injector No. 3 injector No. 4 injectorIntake air temp. sen.Barometric press.sen. 7. Idle speed control servo ISC servo (DC motor – 4G92)Coolant temp. sen. (stepper motor – 4G92Throttle pos. sen 11. Ignition timing control Ignition coil (power transistorServo valve pos. sen. 13. Control relay controlIdle pos. switch (DOHC) (power supply to control relay (main relay ) sensor actuator)TDC sensor 15. Fuel pump controlCrank angle sensor control relay (fuel pump relay ) 17. Air conditioner relayOxygen sensor control Air conditioner relay 16
  17. 17. I04-2-03 ENGINE MANAGEMENT SYSTEM I • SYSTEM DESCRIPTION EINE CONTROL UNITVehicle speed sensor Oxygen sensor heaterAir conditioner switch • Oxygen sensor heaterP.steering fluid pres. switchInhibitor switch (a/t) 9. AFS filter reset control Air flow sensor (AFS)Ignition switch – ig (DOHC) Engine warning lampIgnition switch - st 13. Engine warning lamp controlDetonation sensor Self diagnosis output terminal 15. Self diagnosis outputPower supply 17. RAM data tranmissionIg. Timing adjustment terminal Diagnosis output terminal (for MUT) 19. EGR controlDiagnosis control terminal EGR control sol. valve 21. Purge controlMixture adjusting screw Purge control sol. valve 17
  18. 18. I04-2-03 ENGINE MANAGEMENT SYSTEM ISPI (SINGLE POINT MPI (MULTI POINT INJECTION)INJECTION) 18
  19. 19. I04-2-03 ENGINE MANAGEMENT SYSTEM I• FUEL SYSTEM• Sistem ini terdiri daripada electromagnetic injector, delivery pipe, fuel pressure regulator,fuel pump dan pulsation damper.• ECU akan mengawal dan menjalankan injector dan pump berdasarkan signal dari sensor.• Menggunakan dua penapis bahanapi• Mempunyai ciri-ciri pengawalan emission seperti fuel vapor pipe, canister dll. 19
  20. 20. I04-2-03 ENGINE MANAGEMENT SYSTEM I • FUEL SYSTEM• Bahanapi di pump melalui pam bahanapi, melalui fuel main pipe, ditapis sebelum diagihkan melalui injector melalui kawalan ECU• Tekanan didalam delivery pipe mestilah berada pada 3.35kg/cm²• Agihan bahanapi berdasarkan signal dari ECU (Siquentially atau Simultaneous) 20
  21. 21. I04-2-03 ENGINE MANAGEMENT SYSTEM I• FUEL SYSTEM 21
  22. 22. I04-2-03 ENGINE MANAGEMENT SYSTEM I• FUEL SYSTEM VARIABLE RESISTOR ENGINE AIR FLOW SENSOR CONTROL UNITBAROMERTRIC PRESSURE SENSOR INTAKE AIR TEMP.SENSOR THROTTLE POSITION SENSOR IDLE POSITION SWITCH CRANK ANGLE SENSOR NO. 1 CYLINDER TDC SENSOR IGNITION SWITCH ST TERMINAL 22
  23. 23. I04-2-03 ENGINE MANAGEMENT SYSTEM I• FUEL SYSTEM LAY OUT. Fuel tank Fuel filter Fuel pump InjectorDelivery pipe Pressure regulator 23
  24. 24. I04-2-03 ENGINE MANAGEMENT SYSTEM I 1. FUEL PUMP Check valve Relief valve• Binaan dari jenis Impeller.• Menggunakan DC motor yang Brush mengerakan pump.• Lebih senyap dan dapat mengelakan vapour lock.• Dikawal oleh ECU dan Control Relay  Motor Armature Magnet• Relief Valve bekerja apabila tekanan Impeller melebihi dari 400 kpa – 600 kpa• Check Valve digunakan untuk mengelakan tekanan didalam pipe line jatuh dan vapor lock terhasil. Filter Casing 24
  25. 25. I04-2-03 ENGINE MANAGEMENT SYSTEM I• FUEL PUMP 25
  26. 26. I04-2-03 ENGINE MANAGEMENT SYSTEM I• FUEL PUMP 26
  27. 27. I04-2-03 ENGINE MANAGEMENT SYSTEM I2. PRESSURE REGULATOR• Berada pada bahagian hujung fuel delivery pipe• Bertujuan untuk memastikan tekanan delivery pipe berada lebih tinggi daripada tekanan intake manifold• Tekanan yang sesuai kira-kira 330kpa – 360 kpa• Ianya akan beroperasi pada keadaan tekanan melebihi had (return fuel) 27
  28. 28. I04-2-03 ENGINE MANAGEMENT SYSTEM I2. PRESSURE REGULATOR 28
  29. 29. I04-2-03 ENGINE MANAGEMENT SYSTEM I3. PULSATION DAMPER •Berada pada bahagian hujung fuel delivery pipe. •Berfungsi untuk menahan atau menyerap gegaran bahan api dalam delivery pipe. 29
  30. 30. I04-2-03 ENGINE MANAGEMENT SYSTEM I4. FUEL INJECTOR Fuel filter Electrical connection Coil windings Solenoid Plunger Needle Valve Pintle cap 30
  31. 31. I04-2-03 ENGINE MANAGEMENT SYSTEM I• FUEL INJECTOR • MDH 145 ~ ISWARA / WIRA 1.3/1.5 Fuel filter Electrical • MDH 145 ~ PERDANA V6 connection • MDH 182 ~ WIRA 1.5/1.6 Coil windings • MDH 210 ~ WIRA 1.8 Solenoid Plunger • MDH 240 ~ PERDANA 2.0 Needle Valve Pintle cap 31
  32. 32. I04-2-03 ENGINE MANAGEMENT SYSTEM I• FUEL INJECTOR • Tujuan utama Inject bahanapi kedalam Intake manifold • Menggunakan punca kuasa battery dari control relay • Ground dari ECU untuk buka solenoid plunger • Jumlah bahanapi adalah bergantung kepada berapa lama ground yang dikawal oleh ECU • MDH 145 dll bermaksud Modify Duel Spray Hiomic yang menancit bahanapi kira-kira 145 cc dalam masa 1 min 32
  33. 33. I04-2-03 ENGINE MANAGEMENT SYSTEM I5. COLD START INJECTOR (TOYOTA)• Berfungsi ketika enjin dalam keadaan dibawah suhu kerja.• Sesetengah model,ianya hanya berfungsi pada suhu dibawah5°c.Jadi ini hanya sesuai bagi negara-negara sejuk.• Bagi negara beriklim spt Malaysia, sistem ini biasanya tidak berfungsi 33sepenuhnya.
  34. 34. I04-2-03 ENGINE MANAGEMENT SYSTEM I6. COLD START INJECTOR TIME SWITCH (TOYOTA) • Cold start injector time switch disambung dalam litar cold start injector. • Ianya menggunakan prinsip bimetal untuk on/off litar. • Semasa enjin sejuk, ia akan melengkapkan litar untuk tujuan lebih pancitan bahan api dan sebaliknya. 34
  35. 35. I04-2-03 ENGINE MANAGEMENT SYSTEM I• COLD START INJECTOR TIME SWITCH (TOYOTA) 35
  36. 36. I04-2-03 ENGINE MANAGEMENT SYSTEM I7. SOLENOID RESISTOR (TOYOTA)• Satu lagi komponen yang terlibatdalam fuel system ialah solenoidresistor• Berfungsi untuk mengelakandaripada Fuel injector menerimalebihan voltage 36
  37. 37. I04-2-03 ENGINE MANAGEMENT SYSTEM I8. FUEL FILTER • Fuel filter bertujuan untuk menapis bahan api daripada segala kekotoran sebelum sampai ke fuel injector. • Berbanding dengan fuel filter biasa,jenis ini diperbuat daripida besi. 37
  38. 38. I04-2-03 ENGINE MANAGEMENT SYSTEM I• AIR INDUCTION SYSTEM1. IDLE SPEED CONTROL SERVO (DC MOTOR) •Berada didalam Idle Speed Control Servo •Mengesan Perubahan valve dalam ISC dan menukarkan kepada pulse signal •ECU menggunakan signal ini untuk mengawal Idle Speed Control Servo 38
  39. 39. I04-2-03 ENGINE MANAGEMENT SYSTEM I• AIR INDUCTION SYSTEM1. IDLE SPEED CONTROL SERVO (STEPPER MOTOR) • Bentuk yang berbeza daripada yang menggunakan gear • Terdiri daripada Steeper Motor dan Pintle(Valve berbentuk segi dihujung) • Mengawal jumlah kemasukan udara (Bypass) kedalam throttle body 39
  40. 40. I04-2-03 ENGINE MANAGEMENT SYSTEM I• AIR INDUCTION SYSTEM• ISC SERVO (DC MOTOR/STEEPER MOTOR) • Memerlukan signal dari air intake (ISC) dan coolant temperature sensor 40 • Semua signal dari sensor diambil dan dikawal oleh ECU
  41. 41. I04-2-03 ENGINE MANAGEMENT SYSTEM I• AIR INDUCTION SYSTEM• ISC SERVO (DC MOTOR/STEEPER MOTOR) Jumlah kemasukan Udara semasa idling dan load berdasarkan : • Throttle Position Sensor • Idle Position Switch • Crank Angle Sensor • Coolant temp Sensor 41
  42. 42. I04-2-03 ENGINE MANAGEMENT SYSTEM I• AIR INDUCTION SYSTEM• ISC SERVO (DC MOTOR/STEEPER MOTOR) • Bergerak keluar dan kedalam • Berfungsi mengawal ketika idling dan operating load • Bertujuan mengawal jumlah kemasukan udara • Dikawal oleh ECU • Contoh load A/C on • Bergerak berdasarkan pulse signal dari ECU • Berpusing berdasarkan angle, setiap angle 15° (Setiap angle Step berubah) • Bukaan Step kira-kira 0 ~ 120 (Steeper Motor) • Untuk DC Motor kira-kira 96 step bukaan penuh 42
  43. 43. I04-2-03 ENGINE MANAGEMENT SYSTEM I• AIR INDUCTION SYSTEM• ISC SERVO (DC MOTOR/STEEPER MOTOR) Jumlah kemasukan Udara semasa idling dan load berdasarkan : c. ISC Servo d. Fast Idle Air Valve e. Adjusting Screw (SAS) f. Throttle Valve 43
  44. 44. I04-2-03 ENGINE MANAGEMENT SYSTEM I• AIR INDUCTION SYSTEM• ISC SERVO (DC MOTOR/STEEPER MOTOR) • Jumlah kemasukan udara dikawal oleh ECU • Bertujuan mengawal kelajuan engine speed 44
  45. 45. I04-2-03 ENGINE MANAGEMENT SYSTEM I• AIR INDUCTION SYSTEM• ISC SERVO (DC MOTOR/STEEPER MOTOR)Fast Idle Air Valve (FIAV) •Jumlah kemasukan udara dikawal oleh Thermo Wax •Signal diperolehi dari coolant temperature sensor •Bukaan therma wax berdasarkan suhu •Apabila suhu mencapai 50°c thermo wax akan tertutup penuh 45
  46. 46. I04-2-03 ENGINE MANAGEMENT SYSTEM I• AIR INDUCTION SYSTEM• ISC SERVO (DC MOTOR/STEEPER MOTOR)Adjusting Screw • Jumlah kemasukan udara juga dikawal melalui pelarasan SAS • Steeper motor harus berada pada kedudukan 9 Step 46
  47. 47. I04-2-03 ENGINE MANAGEMENT SYSTEM I• AIR INDUCTION SYSTEM2. AIR VALVE (Bimetal type)( TOYOTA ) • Berfungsi untuk by-pass udara semasa enjin dalam keadaan sejuk pada keadaan throttle tertutup. • Apabila throttle dalam keadaan idling (belum mencapai suhu kerja) udara akan melalui air valve,iaitu laluan yang tidak melalui throttle valve. 47
  48. 48. I04-2-03 ENGINE MANAGEMENT SYSTEM I• AIR INDUCTION SYSTEM• AIR VALVE (Bimetal type)( TOYOTA ) 48
  49. 49. I04-2-03 ENGINE MANAGEMENT SYSTEM I• AIR INDUCTION SYSTEM• AIR VALVE (Bimetal type)( TOYOTA ) • Rajah ini menunjukan operasi air valve dan laluan udara semasa throttle valve tertutup. • Selain daripada laluan di air valve udara juga melalui idle speed adjusting screw. 49
  50. 50. I04-2-03 ENGINE MANAGEMENT SYSTEM I• AIR INDUCTION SYSTEM• AIR VALVE ( Thermo Wax type )( TOYOTA/PROTON ) •Jumlah kemasukan udara dikawal oleh Thermo Wax •Signal diperolehi dari coolant temperature sensor •Bukaan therma wax berdasarkan suhu •Apabila suhu mencapai 50°c thermo wax akan tertutup penuh 50
  51. 51. I04-2-03 ENGINE MANAGEMENT SYSTEM I• AIR INDUCTION SYSTEM3. THROTTLE BODY 51
  52. 52. I04-2-03 ENGINE MANAGEMENT SYSTEM I• AIR INDUCTION SYSTEM• THROTTLE BODY 52
  53. 53. I04-2-03 ENGINE MANAGEMENT SYSTEM I• AIR INDUCTION SYSTEM4. AIR FILTER• Bertujuan untuk menapis kekotoran udara sebelum masuk melalui throttle body dan seterusnya untuk pembakaran.5. AIR INTAKE CHAMBER• Dilokasikan selepas throttle body.• Tempat pengumpulan udara sebelum digunakan untuk pembakaran. 53
  54. 54. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM1. ELECTRONIC CONTROL UNIT• Menerima signal dari sensor dan mentafsir seterusnya mengarahkan actuator untuk bertindak.2. EFI MAIN RELAY• Untuk mengelakan daripada berlakunya sustan voltan pada litar ECU.• Juga menyambungkan litar pada Circuit Opening Relay.3. CIRCUIT OPENING RELAY(COR)• Menyambungkan litar sistem bahan api. 54
  55. 55. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM4. INTAKE AIR TEMPERATURE SENSOR• Mengesan suhu luar(atmosfera) seperti waktu pagi dan tengah hari.• Menggunakan prinsip NTC (Negative Termister Coeficient).• Membaca keadaan suhu udara dan menghantar signal ke ECU.• ECU mengira, membetulkan jumlah pancitan bahanapi 55
  56. 56. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM5. BAROMETRIC PRESSURESENSOR•Menukarkan signal kepada electricalsignal (tinggi/rendah output).•Mengesan keadaan kedudukanketinggian kenderaan dari aras lautberdasarkan tekanan udara.•Untuk mendapatkan Air Fuel Ratiodan Ignition Timing yang betul. 56
  57. 57. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM6. WATER/COOLANTTEMPERATURE SENSOR•Mengesan suhu coolant/engine.•Menggunakan prinsip NTC (NegativeTermister Coeficient)•Menghantar signal ke ECU•ECU membetulkan jumlah pancitanbahanapi berdasarkan kepada signal. 57
  58. 58. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• WATER/COOLANT TEMPERATURE SENSOR 58
  59. 59. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• WATER/COOLANT TEMPERATURE SENSOR • Graf menunjukan perubahan resistance mengikut suhu. • Semakin tinggi suhu semakin kurang resistance. 59
  60. 60. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM7. VACUM SENSOR( Untuk EFI jenis D Jectronic )• Mengesan jumlah vacum yang terhasilpada Air Intake Chamber untukmengetahui kuantiti udara yang masuk.• Bila throttle dalam keadaan idling, jumlahvacum adalah tinggi, resistance jugaakan menjadi tinggi, jadi voltage signalyang akan dihantar ke ECU adalahrendah dan sebaliknya. 60
  61. 61. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• VACUM SENSOR• Nama lain bagi sensor ini ialahpressure sensor, boost sensordan manifold absolute pressuresensor.• Ianya mempunyai silicon chipyang bertindak balas dengan vacumuntuk mengubah rintangan. 61
  62. 62. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• VACUM SENSOR 62
  63. 63. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• VACUM SENSOR 63
  64. 64. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM8. AIR FLOW METER / SENSOR( Untuk EFI jenis L Jectronic )• Berfungsi untuk mengesan kuantiti udarayang masuk.Ia dapat mengesan secaraterus.• Mempunyai dua jenis iaitu Air FlowMeter atau Air Flow Sensor.• Yang menggunakan sensor ini untuksistem EFI jenis L Jectronic. 64
  65. 65. I04-2-03 ENGINE MANAGEMENT SYSTEM I • ELECTRONIC CONTROL SYSTEM a. AIR FLOW METER• Dilokasikan selepas air cleaner/filtersebelum throttle body.• Mempunyai slider dan potentiometeryang bergerak sekali dengan measuringplate & compensation plate pada satushaft yang sama.• Pada potentiometer mempunyaiperintang dan rintangan akan berubahmengikut pergerakan slider. 65
  66. 66. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• AIR FLOW METER• Udara yang masuk akan melaluimeasuring plate.• Compensation plate pulabertindak sebagai pengimbangataupun untuk menahan gegaran.• Semakin banyak udara yangmasuk, semakin luas bukaanmeasuring plate dan semakinkuranglah rintangan.Jadi voltagesignal adalah tinggi. 66
  67. 67. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• AIR FLOW METER• PENERANGAN LANJUTAKAN DIBERIKAN OLEHEN.HAFIZ SEBENTARLAGI……….. 67
  68. 68. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• AIR FLOW METER 68
  69. 69. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEMb. AIR FLOW SENSOR (KARMAN VORTEX) Rectifier Pressure sensor Vortex pressure inlet• Berfungsi seperti VaccumSensor, Pressure Sensor,Boost Sensor dll.• Berfungsi mengira jumlahkemasukkan udara melalui prinsipkarman Vortex.• ECU menggunakan signal iniuntuk mengira Basic InjectionDuration (ms). By pass passage Vortex generation column 69
  70. 70. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• AIR FLOW SENSOR (KARMAN VORTEX)• Rajah disebelah menunjukannama bahagian penting dalam Airflow sensor jenis Karman Vortexini.• Antara bahagian yang utama sptLED,Mirror,Phototransistor danvortex generator. 70
  71. 71. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• AIR FLOW SENSOR (KARMAN VORTEX) 71
  72. 72. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• AIR FLOW SENSOR (KARMAN VORTEX) 72
  73. 73. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• AIR FLOW SENSOR (HOT WIRE)• Ini adalah satu lagi jenis Air flow sensoryang menggunakan prinsip hot wire.• Udara yang melalui hotwire akanmemindahkan kepanasan danmenyejukan hotwire.• Semakin banyak udara yang masuksemakin banyak haba yang dipindahkan. 73
  74. 74. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• AIR FLOW SENSOR (HOT WIRE)• ECU akan cuba untuk mengekalkansuhu pada hotwire.Cthnya 30°c.• Bila udara yang masuk sedikit, ianyaakan hanya kurangkan sedikitkepanasan pada hotwire.Untukmengekalkan kepada 30°c,hanyasejumlah kecil voltage diperlukan.• Voltage signal yang sedikit inilahakan dihantar ke ECU menandakankuantiti udara yang masuk adalahdalam kuntiti yang sedikit. 74
  75. 75. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM9. DETONATION / KNOCKING SENSOR• Menggunakan konsep piezoelectrik yangmenghasilkan voltage• Merupakan sensor yang dapat mengesankeadaan gegaran didalam cylinder block• ECU menerima signal dan merubahkeadaan ignition timing 75
  76. 76. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• DETONATION / KNOCKING SENSOR 76
  77. 77. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• DETONATION / KNOCKING SENSOR 77
  78. 78. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM10. THROTTLE POSITION SENSOR / IDLE SWITCH(TPS)• Sensor ini berfungsi untukmengesan jumlah bebananberdasarkan sudut bukaanthrottle valve.• Menggunakan prinsip variableresistor.•ECU menerima signal ini untukmembetulkan jumlah pancitanbahan api. 78
  79. 79. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• THROTTLE POSITION SENSOR / IDLE SWITCH(TPS)• Ada berbagai jenis TPS yangdigunakan bergantung kepadapengeluar.• Ada sesetengah mempunyai 3 terminal,4 terminal dan juga 5 terminal. 79
  80. 80. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• THROTTLE POSITION SENSOR / IDLE SWITCH(TPS) 80
  81. 81. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• THROTTLE POSITION SENSOR / IDLE SWITCH(TPS) 81
  82. 82. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• THROTTLE POSITION SENSOR / IDLE SWITCH(TPS) 82
  83. 83. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM11. TDC / CAM ANGLE SENSOR• Mengesan kedudukan piston no 1dalam keadaan TDC / compressionstroke.• Juga dikenali sebagai G signal.• ECU menggunakan signal ini untukfuel injection mengikut firing order. 83
  84. 84. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• TDC / CAM ANGLE SENSOR No 1 cylinder TDC detection slit (Longer then other) TDC detection slit 84
  85. 85. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM12. CRANK ANGLE SENSOR • Mengesan kedudukan piston pada setiap cylinder dan untuk mengesan kelajuan enjin. • ECU menggunakan signal ini untuk on/off power transistor seterusnya menghasilkan spark mengikut firing order. 85
  86. 86. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• CRANK ANGLE SENSOR 86
  87. 87. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• CRANK ANGLE SENSOR 87
  88. 88. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM13. MIXTURE ADJUSTING SREW(VARIABLE RESISTOR) • Bertujuan mengawal jumlah pancitan bahanapi secara manual • Pusingan Variable Resistor akan mengakibatkan Output voltage ke ECU berubah-ubah • ECU mengunakan signal ini untuk mengubah dan mengawal jumlah 88 pancitan bahanapi
  89. 89. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• MIXTURE ADJUSTING SREW(VARIABLE RESISTOR) 89
  90. 90. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM14. VEHICLE SPEED SENSOR • Mengesan kelajuan kenderaan. • Speed sensor biasanya dilokasikan samada pada drive shaft, out put shaft transmission ataupun di belakang speedometer. • ECU menggunakan signal ini bagi proses Mengawal Idle Speed Control dan pencampuran udara-bahanapi semasa acceleration dan deceleration 90
  91. 91. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• VEHICLE SPEED SENSOR 91
  92. 92. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• VEHICLE SPEED SENSOR 92
  93. 93. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM15. POWER STEERING FLUID PRESSURE SENSOR •Bertujuan mengesan beban power steering pump •ECU menggunakan signal untuk mengawal kelajuan engine terutama semasa idling 93
  94. 94. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM• POWER STEERING FLUID PRESSURE SENSOR 94
  95. 95. I04-2-03 ENGINE MANAGEMENT SYSTEM I • ELECTRONIC CONTROL SYSTEM 16. SENSOR OXYGEN• Mengesan keadaan oksigen didalam pelepasan ekzos gas• Menghasilkan output voltage signal berdasarkan keadaan oksigen• ECU mengesan keadaan pencampuran udara/bahanapi berdasarkan signal• Mengubah dan mengawal keadaan pencampuran udara/bahanapi berdasarkanstoichiometric ratio 95• Menggunakan three-way catalitic converter untuk penapisan gas
  96. 96. I04-2-03 ENGINE MANAGEMENT SYSTEM I • ELECTRONIC CONTROL SYSTEM 17. VARIABLE INDUCTION CONTROL SYSTEM• Berfungsi mengubah cara dan bentuk kemasukan udara ke intake manifold• Berfungsi dalam dua peringkat a. Semasa kelajuan rendah b. Semasa kelajuan tinggi• Pada kelajuan tinggi ianya hanya berfungsi bila kelajuan enjin mencapai 4000 rpm 96
  97. 97. I04-2-03 ENGINE MANAGEMENT SYSTEM I• ELECTRONIC CONTROL SYSTEM18. EXHAUST GAS TEMPERATURE SENSOR • Berfungsi untuk mengesan suhu exhaust manifold • Tidak semua kenderaan menggunakannya • Memainkan peranan dalam Emission Control System 97
  98. 98. I04-2-03 ENGINE MANAGEMENT SYSTEM I 98
  99. 99. I04-2-03 ENGINE MANAGEMENT SYSTEM I• KUIZ I. Apakah yang anda faham tentang EFI system. ( 4 markah ) Nyatakan 3 jenis EFI system yang anda tahu. ( 3 markah ) Nyatakan 3 binaan asas dalam EFI system. ( 3 markah ) 99
  100. 100. I04-2-03 ENGINE MANAGEMENT SYSTEM I• KUIZ II. Berikan 4 komponen yang terlibat dalam fuel system. ( 3 markah ) Berikan 4 komponen yang terlibat dalam Air induction system. ( 3 markah )3. Nyatakan kelebihan sistem EFI. ( 4 markah ) 100
  101. 101. I04-2-03 ENGINE MANAGEMENT SYSTEM I SISTEM PANCITAN BAHANAPI ELECTRONIKBAGAIMANA MEMBACA ELECTRICAL CIRCUIT DIAGRAM 101
  102. 102. I04-2-03 ENGINE MANAGEMENT SYSTEM I SYSTEM ELECTRICAL FUEL INJECTION CONTROL Bagaimana Cara Membaca Circuit DiagramTerbahagi kepada tigac. WIRING HARNESS CONFIGURATION DIAGRAMS Menerangkan kedudukan tempat connector dan harness 102
  103. 103. I04-2-03 ENGINE MANAGEMENT SYSTEM I SYSTEM ELECTRICAL FUEL INJECTION CONTROL Bagaimana Cara Membaca Circuit DiagramA. WIRING HARNESS CONFIGURATION DIAGRAMS Corogated tube atau salur penebat tahan panas 103
  104. 104. I04-2-03 ENGINE MANAGEMENT SYSTEM I SYSTEM ELECTRICAL FUEL INJECTION CONTROL Bagaimana Cara Membaca Circuit DiagramB. WIRING HARNESS CONFIGURATION DIAGRAMS Kedudukan body earth pada configuration diagram 104
  105. 105. I04-2-03 ENGINE MANAGEMENT SYSTEM I SYSTEM ELECTRICAL FUEL INJECTION CONTROL Bagaimana Cara Membaca Circuit DiagramC. WIRING HARNESS CONFIGURATION DIAGRAMS Kedudukan lokasi,jumlah pin,colour connector 105
  106. 106. I04-2-03 ENGINE MANAGEMENT SYSTEM I SYSTEM ELECTRICAL FUEL INJECTION CONTROL Bagaimana Cara Membaca Circuit DiagramD. WIRING HARNESS CONFIGURATION DIAGRAMS Kedudukan harness standard mounting pada configuration diagram 106
  107. 107. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramA - Engine CompartmentB - Dash PanelC - Instrument PanelD - InteriorE - DoorF - Luggage CompartmentG - Under Rear Floor 107
  108. 108. I04-2-03 ENGINE MANAGEMENT SYSTEM I SYSTEM ELECTRICAL FUEL INJECTION CONTROL Bagaimana Cara Membaca Circuit DiagramA - ENGINE COMPARTMENT 108
  109. 109. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit Diagram B - DASH PANEL 109
  110. 110. I04-2-03 ENGINE MANAGEMENT SYSTEM I SYSTEM ELECTRICAL FUEL INJECTION CONTROL Bagaimana Cara Membaca Circuit DiagramSINGLE PARTS INSTALLATIONMenerangkan kedudukan sesuatu lokasi yang tidak nampak atau sukaruntuk digambarkan pada Configuration Diagram seperti a. Relays, b. Control Unit, c. Sensor, Diodes, d. Check Terminals, e. Fuseible Link, f. Fuses dll 110
  111. 111. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramContoh kedudukan Single Parts Installation RELAY 111
  112. 112. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramContoh kedudukan Single Parts Installation Control Unit 112
  113. 113. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramContoh kedudukan Single Parts Installation EARTH POINT 113
  114. 114. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramJunction Block 114
  115. 115. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramFuseible Link 115
  116. 116. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramDedicated Fuse 116
  117. 117. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramMultipurpose Fuse 117
  118. 118. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramMarking Connector Pada Circuit Diagram Male Female 118
  119. 119. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramCara membaca connector Male / Female 119
  120. 120. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramTanda Connector Pada Circuit Diagram 120
  121. 121. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramTanda-tanda Earth Pada Circuit Diagram 121
  122. 122. I04-2-03 ENGINE MANAGEMENT SYSTEM I SYSTEM ELECTRICAL FUEL INJECTION CONTROL Bagaimana Cara Membaca Circuit DiagramCIRCUIT DIAGRAMS Menerangkan kedudukan - Circuit power supply - Circuit setiap system - Operation component - Throuble Shouting - Junction Block dll 122
  123. 123. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramTanda-tanda lain di dalam circuit diagram Punca Kuasa 123
  124. 124. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramTanda-tanda lain di dalam circuit diagram Bonded Point 124
  125. 125. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramTanda-tanda lain di dalam circuit diagram Arah Tuju Wire (Code of Destination) 125
  126. 126. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramTanda-tanda lain di dalam circuit diagram Ruang petunjuk tidak mencukupi 126
  127. 127. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramTanda-tanda lain di dalam circuit diagram Connector Yang Menunjukkan Relay 127
  128. 128. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramTanda-tanda lain di dalam circuit diagramSingle Pole Connector 128
  129. 129. I04-2-03 ENGINE MANAGEMENT SYSTEM I SYSTEM ELECTRICAL FUEL INJECTION CONTROL Bagaimana Cara Membaca Circuit Diagram Tanda-tanda lain di dalam circuit diagram Circuit BersambungKe Mukasurat seterusnya 129
  130. 130. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramTanda-tanda lain di dalam circuit diagram Kedudukan pin Dan connector 130
  131. 131. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramTanda-tanda lain di dalam circuit diagram Punca kuasa dalam ECU 131
  132. 132. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramTanda-tanda lain di dalam circuit diagram Sheild Wire 132
  133. 133. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramTanda-tanda lain di dalam circuit diagram Circuit bersambung ke m/s sebelah 133
  134. 134. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramTanda-tanda lain di dalam circuit diagram Kedudukan pin, connector dan jenis connector 134
  135. 135. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramTanda-tanda lain di dalam circuit diagramKedudukan Pin yangberlainan dalam satuconnector yang sama 135
  136. 136. I04-2-03 ENGINE MANAGEMENT SYSTEM I SYSTEM ELECTRICAL FUEL INJECTION CONTROL Bagaimana Cara Membaca Circuit Diagram Tanda-tanda lain di dalam circuit diagramECU current in,out & in/output 136
  137. 137. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramTanda-tanda lain di dalam circuit diagram 137 Current turun dan naik
  138. 138. I04-2-03 ENGINE MANAGEMENT SYSTEM I SYSTEM ELECTRICAL FUEL INJECTION CONTROL Bagaimana Cara Membaca Circuit DiagramTanda-tanda lain di dalam circuit diagram 138Saiz atau colour wire bertukar
  139. 139. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramTanda-tanda lain di dalam circuit diagram Kedudukan body earth 139
  140. 140. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramTanda-tanda lain di dalam circuit diagram 140
  141. 141. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramTanda-tanda lain di dalam circuit diagram Saiz dan colour wire 141
  142. 142. I04-2-03 ENGINE MANAGEMENT SYSTEM I SYSTEM ELECTRICAL FUEL INJECTION CONTROL Bagaimana Cara Membaca Circuit Diagram Tanda-tanda lain di dalam circuit diagramCODE WIRE COLOUR CODE WIRE COLOUR B BLACK P PINK BR BROWN R RED G GREEN SB SKY BLUE VIOLET GR GRAY V WHITE L BLUE W LG LIGHT GREEN Y YELLOW O ORANGE 142
  143. 143. I04-2-03 ENGINE MANAGEMENT SYSTEM ISYSTEM ELECTRICAL FUEL INJECTION CONTROLBagaimana Cara Membaca Circuit DiagramTanda-tanda lain di dalam circuit diagram 143
  144. 144. I04-2-03 ENGINE MANAGEMENT SYSTEM ISISTEM PANCITAN ELECTRONIKPower Supply 144
  145. 145. I04-2-03 ENGINE MANAGEMENT SYSTEM ISISTEM PANCITAN ELECTRONIKPower Supply 145
  146. 146. I04-2-03 ENGINE MANAGEMENT SYSTEM ISISTEM PANCITAN ELECTRONIKPower Supply ECU 146
  147. 147. I04-2-03 ENGINE MANAGEMENT SYSTEM ISISTEM PANCITAN ELECTRONIKPower Supply Ground 147
  148. 148.  Produces a 5V pulse corresponding to each piston at TDC 2 pulses per revolution of the crankshaft. Used to determine engine RPM and as a reference for spark & injection timing. 148
  149. 149. Flux screening plate PHOTO DIODE Vane LEDCrank angle No. 1 cylinder TDCSensor sub unit Sensor sub-unit SLIT FOR CRANK ANGLE SENSOR 149
  150. 150. No 1 cylinderTDC detection slit(Longer then other) TDC detection slit • Senses TDC on compression stroke of no. 1 • ECU uses this signal as a reference for the commencement of sequential injection 150
  151. 151. 151
  152. 152. Reed switch type( 4G92 & 4G93 ) Magnetic resistive element type ( 4G63 ) 152
  153. 153. SEQUENTIAL INJECTION ENGINE AT IDLING No.1 TDC No.3 TDC No.4 TDC No.2 TDC TDC Sensor 85º 45º Crank Angle Sensor 75º 5º No.1 Comp Power Exhaust Intake Comp No.3 Intake Comp Power Exhaust Intake No.4 Exhaust Intake Comp Power Exhaust No.2 Power Exhaust Intake Comp Power• Inject on the exhaust stroke• TDC sensor signal reference for sequential injection.• Inject fuel into the no. 1,3,4,2• Basis of the 75 BTDC signal from crank angle sensor 153 Copy Right® Reserve Akademi Saga / Eon Berhad
  154. 154. SIMULTANEOUS INJECTION INJECTION UPON START CRANKING No. 4 TDC No. 2 TDC No.1 TDC Cranking Started 85 45 Crank angle sensor signal 75 5 75 5 75 5 75 5 Cylinder stroke No. 1 Exhaust Intake Compression Exhaust No. 2 Ignition Exhaust Intake Compression No. 3 Compression Ignition Exhaust Intake No. 4 Intake Compression Ignition Exhaust• Injected into all cylinder simultaneously response to the first 75 TDC• TDC sensor signal reference for sequential injection.• ECU detected no. 1 TDC fuel is injected sequentially 154 Copy Right® Reserve Akademi Saga / Eon Berhad
  155. 155. SIMULTANEOUS INJECTION INJECTION DURING COLD START No. 4 TDC No. 2 TDC No.1 TDC No. 3 TDC No. 1 cylinder TDC sensor signal 85 45 Crank angle sensor signal 75 5 75 5 75 5 75 5 Cylinder stroke No. 1 Exhaust Intake Compression Exhaust No. 2 Ignition Exhaust Intake Compression No. 3 Compression Ignition Exhaust Intake No. 4 Intake Compression Ignition Exhaust• A large amount of starting• Fuel is injected into all four cylinder• Injected into all the cylinder twice per engine rotation• Inject 75º BTDC signal from crank angle sensor 155 Copy Right® Reserve Akademi Saga / Eon Berhad
  156. 156. SIMULTANEOUS INJECTION INJECTION DURING ACCELERATION No. 2 TDCTDC sensor signal No.1 TDC No. 3 TDC No. 4 TDC No. 1 cylinder 85 55 Crank angle Sensor signal 75 5 75 5 75 5 75 5 Cylinder stroke No. 1 COMP IGNITION INTAKE COMP No. 3 INTAKE COMP EXHAUST INTAKE No. 4 EXHAUST INTAKE IGNITION EXHAUST No. 2 IGNITION EXHAUST COMP IGNITION• Opening of the throttle valve• Simultaneously at intervals of given time (10ms ) 156 Copy Right® Reserve Akademi Saga / Eon Berhad
  157. 157. 157

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