Fuel cut-off solenoid (Engine management system - EDC)

Fuel cut-off solenoid

The fuel cut-off solenoid is located in the high pressure section of the FIP. When the ignition is switched on the ECM sends a signal to the solenoid. The solenoid energises opening a valve allowing fuel to flow.

When the ignition is switched off, or in the event of a serious engine problem, the ECM will remove the supply to the solenoid, closing the valve and cutting off the fuel supply to the injectors.

EXHAUST GAS RECIRCULATION (EGR)

During certain running conditions the EGR system directs exhaust gases into the intake manifold to be used in the combustion process. The principal effect of this is to reduce combustion temperatures, which in turn reduces Oxides of Nitrogen (NO_x) emissions.

The ECM controls an EGR modulator valve mounted on the bulkhead. This valve, when modulated, opens the exhaust EGR valve and directs exhaust gases into the inlet manifold.

See EMISSION CONTROL, Description and operation.