Injection System

See Figure .

Fuel drawn from the fuel tank (8) by the pumps (9) and (10), is constantly supplied to the injectors (12) through a filter (11). A fuel pressure regulator (13), rated at 3 bars, is always under manifold pressure to maintain a constant pressure at the injectors based on a given manifold pressure. A pulsation damper (14) is located in line upstream of the injector distribution pipe (15). It reduces the noises caused by the pressure variations occurring as a result of the opening and closing of the injectors.

The ECU (1) controls all the injectors simultaneously and delivers its atomized fuel upstream of the intake valves. This system is also equipped with:

• An auxiliary air device (16) for cold start operation
• An auto diagnostic feature which alerts the driver of engine malfunctions through a flashing indicator (CHECK ENGINE) (17) and a system tap for interrogation by connector (18)
• A canister purge electrovalve (19) for fuel vapor recovery