Fuel Injection Control

Injector drive time and injector timing is controlled so that always an optimum air/fuel mixture is supplied to the engine to correspond to the continually changing engine operation conditions.

A single injector is mounted at the intake port of each cylinder.

Fuel is sent under pressure from the fuel tank by the fuel pump with the pressure being regulated by the fuel pressure regulator. The fuel thus regulated is distributed to each of the injectors.

Fuel injection is normally carried out once for each cylinder for every two rotations of the crankshaft. The firing order is 1-2-3-4-5-6.

The ECM provides a good air/fuel mixture by carrying out "open-loop" control when the engine is cold or operating under high load conditions in order to maintain engine performance. In addition, when the engine is warm or carries out "Closed loop" control, the ECM provides an optimum performance by catalytic converter and controls the air/fuel mixture in order to obtain theoretical air/fuel mixture ratio.