The heart of an automobile is its engine, and the heart requires a constant and ingenuous supply of blood, fuel in this case. There had been carburetors faithfully doing this holy work, but technology never seizes to move up. Therefore, the latest offering is the fuel injector for petrol engin es. Though it all started with a simple objective of supplying a controlled amount of fuel at proper intervals of time, it’s, as of now, not as simple as that. With emission norms getting stricter and changing trends in engine technology – high-speed engines, Variable displacement engines, Hybrid engines, etc – it became more and more of a necessity than a luxury to improve the fuel supply system.
Today’s fuel injection unit not only improves engine performance, but also helps in giving a cleaner exhaust that too with a increased fuel economy. The objectives can be attained using a microprocessor that directs the injector using a number of various input parameters. These parameters include manifold temperatures, throttle position, ignition timing, engine speed, load, and a lot more of other factors. The various strategically placed sensors measures these physical quantities and convey the same to the processor in electronic signals. The paper deals with the brief functionality and basic concept of operation of a modern fuel injector used in petrol engines.
The heart of an automobile is its engine, and the heart requires a constant and ingenuous supply of blood, fuel in this case. There had been carburetors faithfully doing this holy work, but technology never seizes to move up. Therefore, the latest offering is the fuel injector for petrol engin es. Though it all started with a simple objective of supplying a controlled amount of fuel at proper intervals of time, it’s, as of now, not as simple as that. With emission norms getting stricter and changing trends in engine technology – high-speed engines, Variable displacement engines, Hybrid engines, etc – it became more and more of a necessity than a luxury to improve the fuel supply system.
Today’s fuel injection unit not only improves engine performance, but also helps in giving a cleaner exhaust that too with a increased fuel economy. The objectives can be attained using a microprocessor that directs the injector using a number of various input parameters. These parameters include manifold temperatures, throttle position, ignition timing, engine speed, load, and a lot more of other factors. The various strategically placed sensors measures these physical quantities and convey the same to the processor in electronic signals. The paper deals with the brief functionality and basic concept of operation of a modern fuel injector used in petrol engines.
ECU ... Engine Control Unit .. Inputs & Outputs _ ExplainedKamel Elsayed
ECU ... Engine Control Unit .. Inputs & Outputs _ ExplainedEngine sensors and its functions and pictures.
In internal combustion engines, exhaust gas recirculation (EGR) is a nitrogen oxide (NOx) emissions reduction technique used in petrol/gasoline and diesel engines. EGR works by recirculating a portion of an engine's exhaust gas back to the engine cylinders. This dilutes the O2 in the incoming air stream and provides gases inert to combustion to act as absorbents of combustion heat to reduce peak in-cylinder temperatures. NOx is produced in a narrow band of high cylinder temperatures and pressures.
The common rail fuel injection system is finding increasing use engines as it has the potential to drastically cut emissions and fuel consumption. This system provides control of many important parameters linked to the injection system. It has a wide range of applications, From small to heavy-duty engines.
ECU ... Engine Control Unit .. Inputs & Outputs _ ExplainedKamel Elsayed
ECU ... Engine Control Unit .. Inputs & Outputs _ ExplainedEngine sensors and its functions and pictures.
In internal combustion engines, exhaust gas recirculation (EGR) is a nitrogen oxide (NOx) emissions reduction technique used in petrol/gasoline and diesel engines. EGR works by recirculating a portion of an engine's exhaust gas back to the engine cylinders. This dilutes the O2 in the incoming air stream and provides gases inert to combustion to act as absorbents of combustion heat to reduce peak in-cylinder temperatures. NOx is produced in a narrow band of high cylinder temperatures and pressures.
The common rail fuel injection system is finding increasing use engines as it has the potential to drastically cut emissions and fuel consumption. This system provides control of many important parameters linked to the injection system. It has a wide range of applications, From small to heavy-duty engines.
Core technology of Hyundai Motor Group's EV platform 'E-GMP'Hyundai Motor Group
What’s the force behind Hyundai Motor Group's EV performance and quality?
Maximized driving performance and quick charging time through high-density battery pack and fast charging technology and applicable to various vehicle types!
Discover more about Hyundai Motor Group’s EV platform ‘E-GMP’!
In this presentation, we have discussed a very important feature of BMW X5 cars… the Comfort Access. Things that can significantly limit its functionality. And things that you can try to restore the functionality of such a convenient feature of your vehicle.
What Does the PARKTRONIC Inoperative, See Owner's Manual Message Mean for You...Autohaus Service and Sales
Learn what "PARKTRONIC Inoperative, See Owner's Manual" means for your Mercedes-Benz. This message indicates a malfunction in the parking assistance system, potentially due to sensor issues or electrical faults. Prompt attention is crucial to ensure safety and functionality. Follow steps outlined for diagnosis and repair in the owner's manual.
𝘼𝙣𝙩𝙞𝙦𝙪𝙚 𝙋𝙡𝙖𝙨𝙩𝙞𝙘 𝙏𝙧𝙖𝙙𝙚𝙧𝙨 𝙞𝙨 𝙫𝙚𝙧𝙮 𝙛𝙖𝙢𝙤𝙪𝙨 𝙛𝙤𝙧 𝙢𝙖𝙣𝙪𝙛𝙖𝙘𝙩𝙪𝙧𝙞𝙣𝙜 𝙩𝙝𝙚𝙞𝙧 𝙥𝙧𝙤𝙙𝙪𝙘𝙩𝙨. 𝙒𝙚 𝙝𝙖𝙫𝙚 𝙖𝙡𝙡 𝙩𝙝𝙚 𝙥𝙡𝙖𝙨𝙩𝙞𝙘 𝙜𝙧𝙖𝙣𝙪𝙡𝙚𝙨 𝙪𝙨𝙚𝙙 𝙞𝙣 𝙖𝙪𝙩𝙤𝙢𝙤𝙩𝙞𝙫𝙚 𝙖𝙣𝙙 𝙖𝙪𝙩𝙤 𝙥𝙖𝙧𝙩𝙨 𝙖𝙣𝙙 𝙖𝙡𝙡 𝙩𝙝𝙚 𝙛𝙖𝙢𝙤𝙪𝙨 𝙘𝙤𝙢𝙥𝙖𝙣𝙞𝙚𝙨 𝙗𝙪𝙮 𝙩𝙝𝙚 𝙜𝙧𝙖𝙣𝙪𝙡𝙚𝙨 𝙛𝙧𝙤𝙢 𝙪𝙨.
Over the 10 years, we have gained a strong foothold in the market due to our range's high quality, competitive prices, and time-lined delivery schedules.
Things to remember while upgrading the brakes of your carjennifermiller8137
Upgrading the brakes of your car? Keep these things in mind before doing so. Additionally, start using an OBD 2 GPS tracker so that you never miss a vehicle maintenance appointment. On top of this, a car GPS tracker will also let you master good driving habits that will let you increase the operational life of your car’s brakes.
Symptoms like intermittent starting and key recognition errors signal potential problems with your Mercedes’ EIS. Use diagnostic steps like error code checks and spare key tests. Professional diagnosis and solutions like EIS replacement ensure safe driving. Consult a qualified technician for accurate diagnosis and repair.
What Exactly Is The Common Rail Direct Injection System & How Does It WorkMotor Cars International
Learn about Common Rail Direct Injection (CRDi) - the revolutionary technology that has made diesel engines more efficient. Explore its workings, advantages like enhanced fuel efficiency and increased power output, along with drawbacks such as complexity and higher initial cost. Compare CRDi with traditional diesel engines and discover why it's the preferred choice for modern engines.
Why Is Your BMW X3 Hood Not Responding To Release CommandsDart Auto
Experiencing difficulty opening your BMW X3's hood? This guide explores potential issues like mechanical obstruction, hood release mechanism failure, electrical problems, and emergency release malfunctions. Troubleshooting tips include basic checks, clearing obstructions, applying pressure, and using the emergency release.
"Trans Failsafe Prog" on your BMW X5 indicates potential transmission issues requiring immediate action. This safety feature activates in response to abnormalities like low fluid levels, leaks, faulty sensors, electrical or mechanical failures, and overheating.
5 Warning Signs Your BMW's Intelligent Battery Sensor Needs AttentionBertini's German Motors
IBS monitors and manages your BMW’s battery performance. If it malfunctions, you will have to deal with an array of electrical issues in your vehicle. Recognize warning signs like dimming headlights, frequent battery replacements, and electrical malfunctions to address potential IBS issues promptly.
Ever been troubled by the blinking sign and didn’t know what to do?
Here’s a handy guide to dashboard symbols so that you’ll never be confused again!
Save them for later and save the trouble!
2. 2
EDC Components overview
Crank Speed Sensor
Cam Speed Sensor
Coolant Temp Sensor
Rail Pressure Sensor
Boost Temp &
Pressure Sensor
Accelerator Pedal
Sensor
Vehicle Speed Sensor
Metering Unit
(Fuel quantity control)
Input Sensors / Switches Electronic Control Unit
EDC17 H-Bridge
Output Actuators / Lamp
Signal Inputs / Signal Evaluation
Signal Processing &
Quantity Calculation (Torque
Structure)
Injection Control (Fuel Quantity
/ start of Injection / Pilot
Injection & Timing)
Rail pressure Control
Engine
Vehicle
EGR Sensor
EGR DC Motor
(EGR position control)
Injector
(Fuel injection)
Oil pressure & temp
Sensor
3. 3
EDC Components overview
Input Sensors / Switches
Sense engine rpm through crankshaft speed
Sense cylinder TDC position using Cam trigger wheel
Sense engine coolant temperature
Sense fuel pressure inside common rail
Sense boost pressure of air sent inside engine
Sense EGR position
Sense accelerator pedal position
Sense accelerator pedal position
Crank Speed Sensor
Cam Speed Sensor
Coolant Temp Sensor
Rail Pressure Sensor
Boost Temp &
Pressure Sensor
Accelerator Pedal
Sensor
Vehicle Speed Sensor
Engine
Vehicle
EGR Sensor
Oil pressure & temp
Sensor
Sense engine oil pressure and temperature
4. 4
EDC Components overview
Metering Unit
(Fuel quantity control)
Output Actuators
EGR DC Motor
(EGR position control)
Injector
(Fuel injection)
Controls the amount of fuel being sent inside the High pressure pump
Injects the fuel inside the combustion chamber – actuated by a solenoid
Actuates the EGR valve to open according to the required lift
5. 5
➢ The load requirement is understood from the
ACC pedal position.
➢ Based on the engine running rpm and the acc
pedal position, rail pressure to be maintained is
arrived and correspondingly the metering unit
is actuated.
➢ Based on the rail pressure, the energizing time
for the injector solenoid is arrived.
➢ Based on the CAM sensor, the engine at TDC is
arrived and the injector of the corresponding
cylinder is actuated.
EDC Components overview
Engine Functioning
Metering Unit
(Fuel quantity control)
Input Sensors / Switches Electronic Control Unit
EDC17 H-Bridge
Output Actuators / Lamp
EGR DC Motor
(EGR position control)
Injector
(Fuel injection)
Crank Speed Sensor
Cam Speed Sensor
Coolant Temp Sensor
Rail Pressure Sensor
Boost Temp &
Pressure Sensor
Accelerator Pedal
Sensor
Vehicle Speed Sensor
Engine
Vehicle
EGR Sensor
Oil pressure & temp
Sensor
6. 6
➢ Boost pressure is monitored and the input is
provided to ECU to adjust the fuel quantity and
injection quantity accordingly.
➢ Coolant temperature and oil temperature is
sensed to cut down the power of engine under
high coolant temperature / low oil pressure
temperature condition
EDC Components overview
Engine Functioning
Metering Unit
(Fuel quantity control)
Input Sensors / Switches Electronic Control Unit
EDC17 H-Bridge
Output Actuators / Lamp
EGR DC Motor
(EGR position control)
Injector
(Fuel injection)
Crank Speed Sensor
Cam Speed Sensor
Coolant Temp Sensor
Rail Pressure Sensor
Boost Temp &
Pressure Sensor
Accelerator Pedal
Sensor
Vehicle Speed Sensor
Engine
Vehicle
EGR Sensor
Oil pressure & temp
Sensor
7. 7
➢ Based on the engine operating conditions, the
amount of EGR to be sent inside the engine is
decided.
➢ The existing position of EGR valve is sensed
and accordingly input is provided to DC motor
of EGR valve to lift EGR valve to desired
position.
EDC Components overview
Engine Functioning
Metering Unit
(Fuel quantity control)
Electronic Control Unit
EDC17 H-Bridge
Output Actuators / Lamp
Injector
(Fuel injection)
EGR DC Motor
(EGR position control)
Crank Speed Sensor
Cam Speed Sensor
Coolant Temp Sensor
Rail Pressure Sensor
Boost Temp &
Pressure Sensor
Accelerator Pedal
Sensor
Vehicle Speed Sensor
Engine
Vehicle
EGR Sensor
Oil pressure & temp
Sensor
Input Sensors / Switches
9. 9
Engine Protection Emission control (OBD)
➢ Engine function is controlled by the sensors and
actuators.
➢ Any failure of sensor / actuator may lead to a
severe damage to engine / vehicle and may even
lead to safety issues.
➢ Monitoring and control is required to save the
engine from failure.
➢ Any failure of sensor / actuator may
lead to increased emission from the
exhaust which will not be accepted
by the regulatory bodies.
➢ Monitoring and control is required to
limit the exhaust from engine.
Diagnostic management
Why do we need it ?
10. 10
➢ When monitoring parameter
exceeds the set limit.
➢ When the supply is not meeting
the demand requirement.
➢ When sensor fails.
➢ When actuator fails.
➢ When wiring harness fails.
➢ When ECU fails.
Diagnostic management
When do we need it ?
Metering Unit
(Fuel quantity control)
Electronic Control Unit
EDC17 H-Bridge
Output Actuators / Lamp
Injector
(Fuel injection)
EGR DC Motor
(EGR position control)
Crank Speed Sensor
Cam Speed Sensor
Coolant Temp Sensor
Rail Pressure Sensor
Boost Temp &
Pressure Sensor
Accelerator Pedal
Sensor
Vehicle Speed Sensor
Engine
Vehicle
EGR Sensor
Oil pressure & temp
Sensor
Input Sensors / Switches
11. 11
Diagnostic management?
How does it do?
Reactions on Engine
➢ Torque reduction
➢ Speed limitation
➢ Torque + speed limitation
➢ Limp home
➢ Engine shutoff
Engine torque will be reduced by 40% or 80%
Engine maximum rpm will be limited to 1250 /
1750 rpm
Both the above
Both the above
Engine will not start
12. 12
P0036
➢ Any failure will trigger an error code
➢ That error code will be stored in ECU memory
along with the conditions at that time .
➢ Based on the error code, the reaction is
triggered.
➢ The error code and the conditions can be read
from Diagnostic tester
Diagnostic management
What does it do?
Metering Unit
(Fuel quantity control)
Electronic Control Unit
EDC17 H-Bridge
Output Actuators / Lamp
Injector
(Fuel injection)
EGR DC Motor
(EGR position control)
Crank Speed Sensor
Cam Speed Sensor
Coolant Temp Sensor
Rail Pressure Sensor
Boost Temp &
Pressure Sensor
Accelerator Pedal
Sensor
Vehicle Speed Sensor
Engine
Vehicle
EGR Sensor
Oil pressure & temp
Sensor
Input Sensors / Switches
13. 13 Ashok Leyland Presentation
Level of troubleshooting
Component wise….
External
Component (sensor)
Wiring Harness
Component (Actuator)
ECU
➢ Mechanical failures
➢ LPC issues
➢ Failures of sensor base function
which can be verified by resistance
and voltage value
➢ Continuity issue
➢ Pin out repair (Requires
training & Tools)
➢ Failures of actuator base
function which can be
verified by actuator test
using diagnostic tool
➢ ECU malfunction
➢ ECU dataset
➢ ECU
