Perkins 1300 EDi Series, Руководство по ремонту, Страница: 162 / 264

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150 Workshop Manual, TPD 1353E, Issue 3
Peregrine EDi and 1300 Series EDi
General description (High-pressure system)
Lubricating oil from the main pressure rail passes into a channel in the timing case, then into the reservoir (A1)
for the high-pressure pump (A2).
The lubricating oil passes from the pump, under high-pressure, to a regulator valve (A8).
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Some oil is discharged into the timing case (A9), by the valve.
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Some oil is sent to the supply manifold (A4), then to the injector units (A3).
The high-pressure lubrication system provides the pressure to actuate the fuel injector units. The value of the
oil pressure can be altered by the engine management system, this pressure is known as “injection control
pressure”.
Three components work in a cycle to alter the injection control pressure:
1 A sensor (A5) in the supply manifold, sends a signal to the engine control module (A6).
2 The engine control module, uses the signal from the sensor to check the oil pressure. If the pressure needs
to be altered, the module sends a signal to the solenoid (A7) of the regulator valve (A8).
3 The regulator valve, changes the injection control pressure.
Any change of injection control pressure, will affect the sensor, and the cycle will start again.
Continued
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