Many providers only make the distributing pipe (rail) available to purchase as a complete unit along with all the attachments. However, Motorservice offers the pressure sensor as a separate spare part. This means that only the component that is actually defective needs to be replaced – a much more environmentally friendly and cost-effective option.
The sensors also boast outstanding product quality. Finally, as a sales organisation for Rheinmetall’s aftermarket activities, Motorservice acquires a large proportion of its range internally from within the group, including the subsidiary Pierburg. This means that the internationally active spare parts specialist has the know-how and high quality standards of a large international automotive supplier.
How it works
The fuel pressure sensor/fuel rail pressure sensor is installed on the distributing pipe, where it measures the fuel pressure and acts as a sensor for pressure control and metering purposes. The engine control unit provides the sensor with a supply voltage of 5 V. There are also ground and signal output connections.
Moving through a bore in the sensor, the fuel pressure reaches a diaphragm equipped with a sensor element. The diaphragm is distorted, an action that the sensor element converts into electrical voltage and is output to the control unit. The voltage signal experiences a linear increase as the pressure rises. If the control unit identifies a fault affecting the sensor, it outputs a substitute value and limits the injected fuel quantity and the fuel pressure.