1. Electronic Diesel Control
RUFO Project
Fuel Injection Systems
Palestine Polytechnic University
An-Najah National University
Theoretical Part
Eng. Fu’ad Daoud

2. 4/19/2017
Introduction
This presentation is prepared for educational purposes as a part of the RUFO project “Fuel Injection Systems”.
The aim of this project is to give learners easy access to the knowledge of modern fuel injection systems using “Blended E-Learning”.
This is a joint project between Palestine Polytechnic University and Al-Najah National University.
Project team: Leader - Dr. Momen Sughayyer, SME - Eng. Fuad Daoud, Eng. Ashraf Zoghayyer, and Eng. Mosa Zallom, MME - Mr. Zaid Sharaf, and Mr. Sameh Barbarwi.

3. To explain the fundamentals of EDC.
4/19/2017
4/19/2017
Content
Objectives
To explain the fundamentals of EDC.
To show the fuel delivery system operation.
To describe the function of the system components.
To explain the function and operation of VE-EDC pump.

4. To explain the fundamentals of EDC.
4/19/2017
Objectives
To explain the fundamentals of EDC.
To show the fuel delivery system operation.
To describe the function of the system components.
To explain the function and operation of VE-EDC pump.

5. Electronic Diesel Control (EDC)
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4/19/2017
Electronic Diesel Control (EDC)
System Overview
The system composed from three main categories: Sensors, Electronic control unit, and Actuators, sensors supply the control unit with information regarding the vehicle's operating condition; the control unit evaluates these information, and send signals to actuators in order to control the fuel quantity.

6. 1. Accelerator position (APP) sensor 2. Battery
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Bosch VE with EDC
1. Accelerator position (APP) sensor
2. Battery
3. Crankshaft position (CKP) sensor
4. EDC control unit
5. Engine coolant temperature (ECT) sensor
6. Exhaust gas recirculation (EGR) solenoid
7. Fuel filter
8. Fuel injection pump
9. Fuel injector (with needle lift sensor)
10. Fuel tank
11. Glow plug relay
12. Glow plug
13. Glow plug warning lamp
14. Ignition switch
15. Malfunction indicator lamp (MIL)
16. Mass air flow (MAF) sensor
17. Vehicle speed sensor (VSS)

7. 1) Accelerator position (APP) sensor
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1) Accelerator position (APP) sensor
The APP sensor can comprise of a potentiometer, signals from the APP sensor are used by the ECM to determine the exact accelerator position.
1. Potentiometer and idle/full load switch
2. Spring
3. Shaft
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8. Source of energy to the system
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2) Battery
Source of energy to the system
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9. 3) Crankshaft position (CKP) sensor
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3) Crankshaft position (CKP) sensor
This sensor contains a permanent magnet partly enclosed in a soft iron core and partly in a field winding; the tip of the sensor is positioned close to the flywheel ring gear, as the teeth or pins of the trigger wheel pass the sensor the magnetic field changes, inducing a voltage signal which is sent to the engine control module (ECM).
1. Soft iron core
2. Field winding
3. Permanent magnet
4. Flywheel ring gear
5. TDC pin
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10. The EDC control unit assumes the following tasks:-
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4) EDC control unit
The EDC control unit assumes the following tasks:-
Regulate Injection quantity by sending control signals to the quantity adjuster.
The EDC control unit calculates the commencement of injection depending on the influencing factors such as, engine speed sensor, coolant temperature sensor, needle lift sensor …etc, and issues the corresponding output command to the commencement of injection valve in the injection pump.
Regulate charge pressure and exhaust gas recirculation.
Controlling the glow plug system and the auxiliary heater.
Controlling the cruise control system.
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11. 5) Engine coolant temperature (ECT) sensor
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5) Engine coolant temperature (ECT) sensor
The engine coolant (ECT) sensor probe is immersed in coolant and changes its resistance in proportion to engine coolant temperature changes. the sensor incorporates a negative temperature coefficient (NTC) resistor, which decreases in resistance as the temperature rises.
1. Electrical connections
2. Housing
3. NTC resistor
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12. 6) Exhaust gas recirculation (EGR) solenoid
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6) Exhaust gas recirculation (EGR) solenoid
To reduce the oxides of nitrogen emitted by the exhaust, a proportion of the exhaust gas can be returned to the inlet, manifold when operating conditions allow, this is done by EGR.
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13. It is used to eliminate water and dirty from diesel
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7) Fuel filter
It is used to eliminate water and dirty from diesel
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14. EDC pump, is used to pump the fuel throughout the system
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8) Fuel injection pump
EDC pump, is used to pump the fuel throughout the system
1. Potentiometer for
control-collar position
2. Quantity adjuster
3. Electric cut-off valve
4. Plunger
5. Solenoid valve
for start of injection
6. Control Collar
7. Timing device
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15. 9) Fuel injector (with needle lift sensor)
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9) Fuel injector (with needle lift sensor)
It has an integral inductive sensor, at the commencement of injection the magnetic setting pin moves upwards and induces an alternating current into the sensor windings, this information, together with signals from the crankshaft position sensor, is used by the engine control module (ECM) to measure the injection timing.
1. Setting pin
2. Sensor winding
3. Pressure pin
4. Electrical connector
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16. It is used to store Diesel in it.
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10. Fuel tank
It is used to store Diesel in it.
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17. It is used to supply the current to the glow plug
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11. Glow plug relay
It is used to supply the current to the glow plug
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18. 5. Heater and control coils 6. Glow tube 7. Powder
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12. Glow plug
Glow plugs are used to raise the temperature in the combustion chambers to enable the engine to be started in low temperatures. The glow plugs can also be used during cold running to reduce harmful exhaust emissions, blue smoke and knocking.
1. Terminal
2. Insulator
3. Casing
4. Element seal
5. Heater and control coils
6. Glow tube
7. Powder
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19. 4/19/2017
13. Glow plug warning lamp
This is just to tell you that the glow plugs are heating up in readiness for a cold start. You should wait for the light to extinguish before starting the engine.
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20. Connect electrical circuits in the vehicle
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14. Ignition switch
Connect electrical circuits in the vehicle
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21. 15.Malfunction indicator lamp (MIL)
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15.Malfunction indicator lamp (MIL)
The MIL has illuminated during driving this means there is a malfunction trouble code stored in the vehicles computer
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22. 16. Mass air flow (MAF) sensor
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16. Mass air flow (MAF) sensor
It is fitted between the air filter and intake manifold, the task of the air-mass flow meter is to measure the fresh air mass supplied to the engine, this fresh air mass is used to calculate the exhaust gas recirculation rate and the permissible injection quantity
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23. 17. Vehicle speed sensor (VSS)
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17. Vehicle speed sensor (VSS)
Measure the speed of the vehicle and send information to ECU.
Speedometer
Power train Control Module (PCM)
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