Category Archives for Denso-Common Rail System

Denso-Common Rail System – Fuel injectors

A Fuel injector nozzle B Hydraulic servo system C Solenoid valve 1 Combustion chamber seal 2 Electrical connection – solenoid valve 3 High pressure fuel line connection NOTE: The combustion chamber sealing rings must not be reused. The exact procedure … Continue reading

04. September 2018 by sam
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Denso-Common Rail System – Fuel rail (common rail)

1 Fuel pressure sensor 2 Pressure limiting valve 3 Fuel rail The fuel rail performs the following functions: • stores fuel under high pressure and • minimizes pressure fluctuations. Pressure fluctuations are induced in the high-pressure fuel system due to … Continue reading

04. September 2018 by sam
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Denso-Common Rail System – Principle of high pressure generation

A Pump plunger 1 B Pump plunger 2 C To fuel rail 1 Inlet valve 2 Outlet valve 3 Eccentric cam 4 Eccentric cam ring 5 Fuel metering valve 6 Drive shaft The rotary movement of the drive shaft is … Continue reading

04. September 2018 by sam
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Denso-Common Rail System – High pressure pump

The diagram shows the high pressure pump in the 2.4L Duratorq-TDCi A High pressure fuel to fuel rail B Fuel return C Fuel feed 1 High-pressure chamber outlet valve 2 High-pressure chamber inlet valve 3 Pump plunger 4 Fuel metering … Continue reading

04. September 2018 by sam
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Denso-Common Rail System – High-pressure system

The illustration shows the system in the 2.4L Duratorq-TDCi 1 High pressure line 2 Leak-off pipe 3 Fuel injection line 4 Fuel injector 5 Pressure limiting valve 6 Fuel rail 7 Fuel metering valve 8 Fuel pressure sensor 9 Fuel … Continue reading

04. September 2018 by sam
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Denso-Common Rail System – Fuel filter

1 Fuel return (to the fuel filter) 2 Fuel return (to the fuel tank) 3 Fuel feed (to the high-pressure pump) 4 Air cleaner element minder gauge 5 Water-in-fuel sensor (certain markets only) 6 Water drain screw 7 Water-in-fuel sensor … Continue reading

04. September 2018 by sam
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Denso-Common Rail System – Fuel system

A Fuel return from high-pressure pump B High pressure line C Fuel injection line D Leak-off pipe E Fuel return to fuel tank F Fuel feed 1 High pressure pump 2 Fuel rail 3 Fuel injector 4 Pressure limiting valve … Continue reading

04. September 2018 by sam
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Denso-Common Rail System – Fuel injector solenoid valve

1 PCM 2 Coil 3 Solenoid armature 4 Solenoid valve The fuel injectors are each fitted with one solenoid valve. Actuation for fuel metering is carried out by the PCM. Current is applied to the solenoid valves in two stages. … Continue reading

04. September 2018 by sam
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Denso-Common Rail System – Fuel metering valve

A Fuel metering valve opened to maximum B Fuel metering valve opened to minimum V Voltage a Low duty cycle b High duty cycle 1 Transfer pump 2 Fuel metering valve 3 Fuel flow to the high-pressure chambers Function NOTE: … Continue reading

04. September 2018 by sam
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Denso-Common Rail System – Electrical turbocharger guide vane adjustment actuator

1 Electrical turbocharger guide vane adjustment actuator 2 Variable geometry turbocharger In this system, a simplified electrical turbocharger guide vane adjustment actuator is used. The integral electronics in the actuator unit are no longer required. This means • that the … Continue reading

04. September 2018 by sam
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