The mass air flow sensor with integrated intake air temperature sensor measures the amount of intake air.
Using the injector needle lift sensor, which is installed on one of the injectors, the actual start of fuel injection is monitored and fuel injection is performed with advance or delay depending on the engine load at a particular moment.
With the help of a pulse encoder, the speed of rotation of the crankshaft and, accordingly, the number of engine revolutions are recorded.
Depending on the engine load, the exhaust gas recirculation valve directs a certain amount of exhaust gases to afterburning, mixing them with the intake air. This leads to a decrease in the combustion temperature of the air-fuel mixture. The lower the combustion temperature, the lower the content of toxic nitrogen oxides in the exhaust gases.
The brake pedal switch, together with the brake light switch, reduces the fuel cycle to bring the engine to idle when the accelerator pedal sensor is turned off and the driver brakes.
Due to the good cold start properties of direct injection diesel engines, they only need to be preheated at temperatures below about -10°C. The glow plugs are switched on by the microprocessor during preheating.
1.0a. Accelerator pedal:
1 - bolt. Tightening torque - 9 Nm
2 - accelerator pedal position sensor plug
3 - accelerator pedal position sensor
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