Perkins 1300 EDi Series, Workshop Manual, Page: 163 / 264

10
Workshop Manual, TPD 1353E, Issue 3 151
Peregrine EDi and 1300 Series EDi
Sensor for injection control pressure
The sensor for injection control pressure is of the variable capacitance type, which uses pressure to vary a
voltage signal. This sensor sends its voltage signal to the engine control module, at a value between 0 volts
and 5 volts.
High-pressure pump
The high-pressure pump has a drive gear, which is driven by the upper idler gear. It is a rotary pump with seven
pump elements that have a constant stroke. The flow of oil from the pump will vary with engine speed.
A pressure relief valve in the body of the pump opens at 27,6 MPa (4000 lbf/in
2
), it discharges oil into the timing
case.
Regulator valve
The regulator valve is fitted to the high-pressure pump, and consists of a solenoid connected to a valve.
The solenoid receives a signal voltage from the engine control module, the value of the signal affects the
amount of valve movement.
The valve changes the injection control pressure to a value between 3,5/20,7 MPa (500/3000 lbf/in
2
). The
value is changed by the amount of oil the valve discharges into the timing case.
l
To decrease the injection control pressure, the valve discharges more oil into the timing case, this sends
less oil to the supply manifold.
l
To increase injection control pressure, the valve discharges less oil into the timing case, this sends more
oil to the supply manifold.
Supply manifold
The supply manifold supplies oil and fuel to the fuel injector units, through drillings. Engine oil is supplied at
injection control pressure, and fuel is supplied at 413 kPa (60 lbf/in
2
).
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