When the fuel pressure of the commonrail becomes higher than the target injection pressure, the pressure discharge valve receives a signal from engine ECU, in order to open the valve and send fuel back Read more Operation of Pressure Discharge Valve/Pressure Regulator
Diesel Engine Control System
Generation of Fuel Pressure in the Supply Pump
The two sets of opposing plungers are driven by the inner cam via the rollers. The inner cam is driven by the engine via the timing belt. The inside of the inner cam, which is elliptic, comes in contact Read more Generation of Fuel Pressure in the Supply Pump
System Configuration of Supply Pump
1. Outline
The fuel that has been drawn up from the feed pump located inside the supply pump is pressurized to the required pressure. The plunger in the pump generates the required injection pressure. Read more System Configuration of Supply Pump
EFI-diesel Control System /Operation of Timer System Service Hint
Service Hint
Injection Pump Installation
Install the injection pump by aligning the matching mark on the injection pump with the reference position mark on the engine. Because the ECU recognizes the Read more EFI-diesel Control System /Operation of Timer System Service Hint
Other EFI-diesel Control System /Operation of Timer System
Injection Volume Adjustment
The injection volume is adjusted by operating the SPV in accordance with the signals from the ECU to vary the timing of the ending of the injection.
Injection Timing Construction Read more Other EFI-diesel Control System /Operation of Timer System
Types of SPV (Spill Control Valve) for Diesel Engine Control System
Injection Volume Outline of SPV
There are two types of SPV (Spill Control Valve) that control the injection volume.
Conventional type SPV
(used in axial plunger type pump)
Direct-acting type SPV
(used Read more Types of SPV (Spill Control Valve) for Diesel Engine Control System
Fuel System of Conventional EFI-diesel
In the conventional EFI-diesel, control of injection timing and volume is performed electronically. The device that generates the fuel pressure is the same pump used in an ordinary diesel engine.
Problem Symptoms Table (for Common-rail EFI-diesel)
When the malfunction code is not confirmed the DTC check and problem still can not be confirmed in the basic inspection,then proceed to this step and perform troubleshooting according to the numbered order Read more Problem Symptoms Table (for Common-rail EFI-diesel)
Problem Symptoms Table (for Conventional EFI-diesel)
When the malfunction code is not confirmed by the DTC check and the problem still can not be confirmed in the basic inspection, perform troubleshooting according to the numbered order given in the table Read more Problem Symptoms Table (for Conventional EFI-diesel)
System Configuration of Common-rail EFI-diesel
System configuration of common-rail EFI-diesel
1. Sensors
2. Actuator
3. ECU and other parts
Layout of components (1CD-FTV E/G)
1. Sensor
(1) Air flow meter
Detects the intake air volume.
(2) Read more System Configuration of Common-rail EFI-diesel