Category Archives for Actuators

Siemens-Common Rail System – EGR valve (electrically controlled systems)

A Installation position on 1.4L Duratorq-TDCi (DV) diesel engine (Emission Standard IV) B Installation position on 2.0L Duratorq-TDCi (DW) diesel engine Depending on the engine version, an electrically controlled EGR valve is used in the Siemens Common Rail system. This … Continue reading

01. September 2018 by sam
Categories: Actuators | Leave a comment

Siemens-Common Rail System – EGR valve solenoid valve (vacuum-controlled systems)

Function The EGR valve solenoid valve is actuated via PWM signals from the PCM, in accordance with the required exhaust gas quantity to be recirculated. The duty cycle with which the EGR valve solenoid valve is actuated by the PCM … Continue reading

01. September 2018 by sam
Categories: Actuators | Leave a comment

Siemens-Common Rail System – Intake manifold flap servo motor (1.4L Duratorq-TDCi (DV) diesel engine, emission standard IV)

Some engine versions with emission standard IV (without diesel particulate filter) are equipped with an intake manifold flap servo motor. In these versions the intake manifold flap only serves to restrict the intake air for more efficient exhaust gas recirculation … Continue reading

01. September 2018 by sam
Categories: Actuators | Leave a comment

Siemens-Common Rail System – Intake manifold flap and intake manifold flap solenoid valve (vacuum-operated systems)

1 Air flow in intake manifold 2 Intake manifold flap 3 PCM 4 Intake manifold flap solenoid valve 5 Vacuum unit In some versions, a vacuum-operated intake manifold flap is used, which is actuated via an intake manifold flap solenoid … Continue reading

31. August 2018 by sam
Categories: Actuators | Leave a comment

Siemens-Common Rail System – Electrical turbocharger guide vane adjustment actuator

1 Electrical turbocharger guide vane adjustment actuator 2 Actuator lever At the time of going to press, installed in the 1.8L Duratorq-TDCi (Kent) diesel engine only. The purpose and internal functioning are similar to the installed actuator in the Delphi … Continue reading

31. August 2018 by sam
Categories: Actuators | Leave a comment

Siemens-Common Rail System – Boost pressure control valve (variable geometry turbocharger, vacuum-controlled)

Function The boost pressure control valve is provided with a vacuum by the vacuum pump. Pulse-width modulated signals from the PCM control this vacuum via the boost pressure control valve. The controlled vacuum acts on the vacuum unit in the … Continue reading

29. August 2018 by sam
Categories: Actuators | Leave a comment

Siemens-Common Rail System – Piezo-electric control of fuel injectors

A Fuel injector closed B Voltage pulse from the PCM: Start of charging phase, fuel injector begins to open C Injection D Voltage pulse from the PCM: Start of discharging phase, injection ends 1 PCM 2 Piezo actuator 3 Injector … Continue reading

29. August 2018 by sam
Categories: Actuators | Leave a comment

Siemens-Common Rail System – Fuel pressure control valve

1 Electromagnetically operated fuel pressure control valve 2 Valve seat 3 Valve ball 4 Coil 5 Armature 6 Compression spring 7 Pin NOTE: During repair, the high pressure control valve may not be removed from the high pressure pump. The … Continue reading

28. August 2018 by sam
Categories: Actuators | Leave a comment

Siemens-Common Rail System – Fuel metering valve

1 Electromagnetically operated fuel metering valve 2 Piston 3 Bush 4 Compression spring 5 Coil 6 Armature NOTE: During repair, the fuel metering valve must not be removed from the high pressure pump. The pump may only be replaced as … Continue reading

28. August 2018 by sam
Categories: Actuators | Leave a comment

You might also likeclose