Perkins珀金斯1506A柴油发动机T400726喷油器

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.

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A pressure relief valve in the body of the pump opens at 27,6 MPa (4000 lbf/in  ), 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.

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The valve changes the injection control pressure to a value between 3,5/20,7 MPa (500/3000 lbf/in  ). 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

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injection control pressure, and fuel is supplied at 413 kPa (60 lbf/in  ).

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Peregrine EDi and 1300 Series EDi

Sensor for injection control pressure

To remove and to fit

Operation 10-20

To remove

1  Disconnect the electrical cable at the sensor for injection control pressure.

2  Remove the sensor for the supply manifold and discard its ‘O’ ring.

To fit

1  Fit a new ‘O’ ring to the sensor.

2  Apply Loctite 277 to the threads of the sensor.

3  Fit and tighten the sensor to 26 Nm (19 lbf ft) 2,6 kgf m.

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Peregrine EDi and 1300 Series EDi

High-pressure pump

To remove

Operation 10-21

To remove

1  Disconnect the electrical cable (A2) at the sensor (A1) for engine oil temperature.

2  Disconnect the electrical cable (A4) at the solenoid (A3) of the regulator valve for injection control pressure.

3  Remove the banjo bolts (B2 and B4) from the fuel pipes of the lift pump, remove and discard the copper

washers.

4  Disconnect the high-pressure oil pipe (B3).

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5  Remove the nut (B6) that retains the solenoid (B5).

6  Remove the sensor for engine oil temperature.

7  Use a suitable pump to drain the reservoir for the high-pressure system. Drain the reservoir through the hole

for the sensor (B1).

8  Hold the high-pressure pump, remove the two setscrews (C1) that retain the pump. Remove the pump and

discard the joint.

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Peregrine EDi and 1300 Series EDi

To fit

Operation 10-22

1  Fit a new joint to the pump.

2  Align the drive gear to mesh with the lower idler gear, push the pump into the rear of the timing case. Fit and

tighten the two setscrews (A1) to 27 Nm (20 lbf ft) 4,8 kgf m.

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3  Fit the sensor (C1) for engine oil temperature and connect its electrical cable (C2).

4  Fit the solenoid (B5) of the regulator valve. Fit and tighten its nut (B6) to 6 Nm (4.5 lbf ft) 0,6 kgf m. Connect

its electrical cable (C4).

5  Connect the fuel pipes to the fuel lift pump, fit new copper washers to the banjo bolts (B2 and B4). Tighten

the banjo bolts to 35 Nm (26 lbf ft) 3,6 kgf m.

6  Fit the high-pressure oil pipe (B3).

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Peregrine EDi and 1300 Series EDi

Regulator valve for injection control pressure

To remove and to fit

Operation 10-23

To remove

1  Disconnect the electrical cable (A2) at the sensor (A1) for engine oil temperature.

2  Disconnect the electrical cable (A4) at the solenoid (A3) of the regulator valve for injection control pressure.

3  Remove the sensor (A1).

4  Use a suitable pump to drain the reservoir for the high-pressure system. Drain the reservoir through the hole

for the sensor (B1).

5  Remove the nut (B3) that retains the solenoid (B2).

6  Remove the regulator valve (B4).

To fit

1  Fit and tighten the regulator valve (B4) to 47 Nm (35 lbf ft) 4,8 kgf m.

2  Fit the solenoid (B2) of the regulator valve. Fit and tighten its nut (B3) to 6 Nm (4.5 lbf ft) 0,6 kgf m. Connect

its electrical cable (A4).

3  Fit the sensor (A1) for engine oil temperature and connect its electrical cable (A2).

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Peregrine EDi and 1300 Series EDi

Supply manifold

To remove

Operation 10-24

1  Put a container of approximately 2 litres (4 pints) under the drain plug (B2) for the supply manifold.

2  Remove the banjo bolt of the fuel return pipe (A3), and disconnect the banjo union (A2). Discard the copper

washers.

3  Remove the valve (A1) for the fuel return pipe.

4  Remove the plug (B2) and drain the lubricating oil from the gallery in the supply manifold (B3). Remove and

discard the ‘O’ ring (B1).

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5  Remove the container and discard the fluids safely in accordance with local regulations.

6  Disconnect the high-pressure oil pipe (C1) at the supply manifold (C3).

7  Disconnect the fuel pipe (C2) at the supply manifold. Discard the copper washers.

8  Remove the 12 setscrews that retain the supply manifold, remove the manifold. Remove and discard the

joint.

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Peregrine EDi and 1300 Series EDi

To fit

Operation 10-25

1  Fit the supply manifold, together with a new joint. Fit and tighten the setscrews to 27 Nm (20 lbf ft) 2,8 kgf m.

Caution: Ensure that the word “FRONT” on the joint is toward the supply manifold.

2  Fit the fuel pipe (A2) at the supply manifold (A3), together with new copper washers.

3  Fit the high-pressure oil pipe (A1).

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4  Fit the drain plug (B2), together with a new ‘O’ ring (B1).

5  Fit the valve (C1) for the fuel return pipe.

6  Connect the banjo union (C2) of the fuel return pipe, together with new copper washers. Fit and tighten the

banjo bolt (C3) to 35 Nm (26 lbf ft) 3,5 kgf m.

7  Eliminate air from the fuel system, see Operation 11-9.

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Peregrine EDi and 1300 Series EDi

11

Fuel system

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General description

Fuel from the tank passes through a pre-filter and a pipe to the fuel strainer (A5). The fuel passes from the

strainer, through a passage in the filter head (A4), then through a pipe to the lift pump (A7). From the lift pump

fuel passes, under pressure, through a pipe and through the filter head to the filter canister (A6).

Clean fuel leaves the filter canister and returns to the filter head, then passes through a pipe to a gallery in the

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supply manifold (A2). A valve (A3) in the supply manifold operates at 414 kPa (60 lb/in  ) and allows fuel to

return to the fuel tank, through a pipe.

Fuel from the supply manifold passes through galleries in the cylinder head, to the fuel injector units (A1). The

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injector unit increases the pressure of the fuel to 24/124 MPa (3500/18000 lbf/in  ), and atomised fuel is injected

into the cylinders.

Cautions:

l   It is very important that dirt does not enter the fuel system. Before a connection is disconnected, clean

thoroughly the area around the connection. After the component has been disconnected, fit a suitable cover

to all open connections.

l   The fuel injection equipment must only be checked and adjusted by personnel who have had the correct

training.

l   The hydraulically actuated, electronically controlled unit injectors (HEUI). There is no repair for these

injector units, they can only be renewed.

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