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FUEL SYSTEM

3

INTRODUCTION :

The fuel system consists of fuel tank, intank fuel pump,

fuel filter, fuel lines and fuel rail. The fuel in the tank is

pumped up by the fuel pump, filtered by the fuel filter

and fedunder pressure to each injector.The fuel pressure

at the injector is always higher than the intake manifold

pressure. The fuel is injected into the intake port of the

cylinder head when the injector opens according to the

injection signal fromECU (Engine Control Unit).

The evaporative emission system for tank ventilation is

“closed”type.The systemprevents fuel vapours

formedwithin the tank and fuel systemfromentering the

atmosphere. It also prevents the release of their

loadof polluting light hydrocarbons (HC).