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

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.

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.

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.

Electronic Diesel Control (EDC) 4/19/2017 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.

1. Accelerator position (APP) sensor 2. Battery 4/19/2017 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)

1) Accelerator position (APP) sensor 4/19/2017 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 Previous page

Source of energy to the system 4/19/2017 2) Battery Source of energy to the system Previous page

3) Crankshaft position (CKP) sensor 4/19/2017 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 Previous page

The EDC control unit assumes the following tasks:- 4/19/2017 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. Previous page

5) Engine coolant temperature (ECT) sensor 4/19/2017 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 Previous page

6) Exhaust gas recirculation (EGR) solenoid 4/19/2017 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. Previous page

It is used to eliminate water and dirty from diesel 4/19/2017 7) Fuel filter It is used to eliminate water and dirty from diesel Previous page

EDC pump, is used to pump the fuel throughout the system 4/19/2017 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 Previous page

9) Fuel injector (with needle lift sensor) 4/19/2017 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 Previous page

It is used to store Diesel in it. 4/19/2017 10. Fuel tank It is used to store Diesel in it. Previous page

It is used to supply the current to the glow plug 4/19/2017 11. Glow plug relay It is used to supply the current to the glow plug Previous page

5. Heater and control coils 6. Glow tube 7. Powder 4/19/2017 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 Previous page

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. Previous page

Connect electrical circuits in the vehicle 4/19/2017 14. Ignition switch Connect electrical circuits in the vehicle Previous page

15.Malfunction indicator lamp (MIL) 4/19/2017 15.Malfunction indicator lamp (MIL) The MIL has illuminated during driving this means there is a malfunction trouble code stored in the vehicles computer Previous page

16. Mass air flow (MAF) sensor 4/19/2017 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 Previous page

17. Vehicle speed sensor (VSS) 4/19/2017 17. Vehicle speed sensor (VSS) Measure the speed of the vehicle and send information to ECU. Speedometer Power train Control Module (PCM) Previous page