Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Engine Management System/ ECU

18,000 views

Published on

The ECU is the core/brain of an automobile...its control domain spans from the power-train to auxiliary functions such as parking assist & lighting.

Published in: Automotive, Business, Technology

Engine Management System/ ECU

  1. 1. ECU/EMS
  2. 2. OPERATION PARAMETERS Power/Mech. Efficiency Thermal Eff/Ht. Balance Exhaust Smoke A/F Ratio Specific Fuel Consumptn Effective Pr’ Volumetric Efficiency Specific O/P Torque
  3. 3. EMS SCHEMATIC Sensor I/P ECU Stage Actuator O/P
  4. 4. MAF Crankshaft position Oxygen VR Tacho Throttle Position Knock Sensor Engine RPM Intake Air TEMP Transmission fluid temp Brake force meter Tire Pressure TSS-Turbo Speed Engine Coolant Temp TERTIARY MAP SECONDARY PRIMARY SENSOR LIST Blind-Spot Parking Speed Door Closure Proximity Curb Sensor NEUTRAL START Stop Light A/C Compressor Relay Head Light
  5. 5. CONTROL SYSTEMS STAGE I STAGE II STAGE III • Mechanical Design Solution • Non-adaptive • Hardwired Chip • Application Specific • Non Programmable • Common base hardware • Programmable
  6. 6. Standard ECU Systems Airbag Control Module BCU/ABS/ESC TCU Body Control Module HMI DCU PSCU-Steering Power train Control Module(PCM)
  7. 7. Power-train Control Module [PCM]  SENSOR INPUTS:  MAF/MAP- Intake air density  VR TACHO- Engine RPM  CR POS- Crankshaft Angle  IDLE SET-Idle Speed  THROTTLE POS  KNOCK  TRANSMISSION ECU  CONTROL OUTPUT:  A/F Ratio- Inj. Timing/Pr  Ig. Timing  Idle Speed Set  VVT  Transient Fueling  Gear Control Ig. Cutoff  Rev Limit  Turbo Waste-gate limit
  8. 8. ADVANTAGES  Ease of Control  Adaptable to multiple scenarios  Very low cost compared to mechanical systems  Occupy lesser space-compact engine bay  Less complicated design  Zero wear
  9. 9. UNIQUE FEATURES  SERVICE SETTING:  List of service parameters  Range of acceptable values OR time limits (modifiable)  Service Indicator Light  Program reset  OBD On Board Diagnostics  Self detection of possible faults  Sensor scanning subsystems  Fault codes stored in ECU memory  All cars after 1996 OBD-II compliant
  10. 10. AUTO TUNING  Software on ECU known as a map  New maps can be loaded to ECU [ process known as re- mapping or flashing]  Complete access to parameters such as fuel injection quantity, boost pressure, ignition timing, idle speed setting  No costly equipment required, laptop, Tuner EMS s/w & ODB cable  Plug & play ECU’s with multiple maps available.

×