3
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High pressure fuel supply lines
Fuel Injection Pump - Vehicles with EGR
The fuel injection pump is a Bosch distributor type fuel injection pump. The drive for this type of fuel injection pump is provided by the crankshaft via a chain. The fuel injection pump incorporates a fuel injection pump control unit located on the top of the pump. The fuel injection pump control unit receives data from the crankshaft position (CKP) sensor and the powertrain control module (PCM). The fuel injection pump control unit calculates the actuation signals for the high-pressure solenoid valve and the fuel injection timing solenoid valve. The fuel injection pump control unit then controls the fuel delivery through the high-pressure solenoid valve.
The fuel injection pump is matched to the PCM and will not allow the vehicle to start if the fuel injection pump control unit and the PCM do not recognize the encrypted codes sent. If a new fuel injection pump or PCM is to be installed they must be configured using WDS.
The fuel system incorporates a feature that prevents the fuel system running dry and consequently drawing air into the system. The PCM receives an input signal from the in-tank fuel level sensor. If the fuel level in the fuel tank drops below approximately 4 liters, rough running will occur. This is to signal to the driver that the vehicle requires refuelling in order to prevent the fuel system from running dry.
Vehicles without EGR
3
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High pressure fuel supply lines
Fuel Injection Pump - Vehicles without EGR
The fuel injection pump is a Bosch distributor type fuel injection pump. The drive for this type of fuel injection pump is provided by the crankshaft via a chain. The fuel injection pump incorporates a fuel shutoff solenoid valve located on the rear of the pump. The fuel injection pump is controlled mechanically and injection duration is determined by engine speed and turbocharger boost pressure.
The fuel system incorporates a feature that will close the fuel shutoff solenoid valve if the idle speed drops to 450 RPM or below.
Fuel Injectors - All Vehicles
The fuel injectors are of a slim five-hole type (pencil fuel injector) located centrally over the piston recess. The fuel injectors are retained in the cylinder head by locking sleeves. The positioning of the fuel injector nozzle holes are matched to the piston recess. The shape of the piston crown has been developed for optimum combustion.
