Thursday, December 30th, 2010
The intake shutter is mounted on the intake manifold. The intake shutter is fully open when the engine is operating. To stop the engine, the VSV operates in accordance with ...
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Wednesday, December 29th, 2010
The diesel throttle is mounted on the intake manifold. The throttle valve, which operates independently from the accelerator pedal, uses the diesel throttle control motor (step motor) to regulate the ...
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Tuesday, December 28th, 2010
Determining Common-rail Fuel Pressure
A fuel pressure that matches the operating conditions of the engine is calculated according to the actual injection volume that has been determined based on the signals ...
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Tuesday, December 28th, 2010
Conventional EFI-diesel
Common-rail EFI-diesel
4. Comparison of the target injection timing and the actual injection timing
As with the convention EFI-diesel, the basic injection timing of the common- rail EFI-diesel is determined through ...
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Monday, December 27th, 2010
1. Engine speed correction control
Symptom:
Increased injection volume due to a rise in the pressure in the pump.
Description of control:
Injection volume reduced according to the engine speed.
2. ECT control
Symptom:
Shocks occurs during ...
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Monday, December 27th, 2010
The ECU performs the following functions to determine the injection timing:
Conventional EFI-diesel
1. Determination of the target injection timing
2. Detection of the actual injection timing
3. Comparison of the target injection timing ...
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Sunday, December 26th, 2010
The ECU performs the following three functions to determine the injection volume:
1. Calculation of basic injection volume
2. Calculation of maximum injection volume
3. Comparison of basic injection volume and maximum injection ...
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Saturday, December 25th, 2010
Engine Speed Sensor
The engine speed sensor is fitted in the injection pump. It consist of a rotor that is pressed over a drive shaft, and a sensor. Electric signals are ...
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Friday, December 24th, 2010
The common-rail system consists of precision parts and uses highly pressurized fuel. Therefore, extreme care must be taken to ensure that foreign matter does not enter the system.
1. Thoroughly clean ...
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