DV11
Operation and Maintenance
123
Common Rail Fuel-injection System
Printed in Mar. 2005 PS-MMA0608-E1A
7) Common rail pressure sensor
The fuel flows to the rail pressure sensor through an opening in the common rail,
the end of which is sealed off by the sensor diaphragm. Pressurized fuel reaches
the sensor's diaphragm through a blind hole. The sensor element for converting
the pressure to an electric signal is mounted on this diaphragm. The signal
generated by the sensor is inputted to an evaluation circuit which amplifies the
measuring signal and sends it to the ECU.
Electric connections
Evaluation circuit
Diaphragm
High pressure
connection
Mounting thread
Pressure sensor of
the common rail
No. 1 cylinder injector
No. 2 cylinder injector
Pressure control valve
Fuel high pressure
connector
No. 3 cylinder injector
No. 6 cylinder injector
No. 4 cylinder injector
No. 5 cylinder injector
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