Toyota Corolla

1992-1998 of release

Repair and operation of the car

Are a part of fuel system:

      – fuel tank;
      – the electric fuel pump (it is mounted in the fuel tank);
      – main relay of system of injection and relay of the fuel pump;
      – nozzles;
      – fuel pressure regulator;
      – air filter;
      – camera of a butterfly valve.

All cars considered in this manual are equipped with system of direct injection of fuel with electronic control (MPFI system).

System of direct injection of fuel (MPFI – system)

The system of direct injection of fuel provides consecutive supply of fuel in engine cylinders under the influence of the operating impulses synchronized with the moment of opening of inlet valves. Management of injection is provided by means of an electronic control unit (ESM block). The electronic control unit traces various parameters of the engine and provides an exact dosage of the fuel injected in the strict sequence into inlet channels of cylinders. The butterfly valve is intended only for regulation of amount of the air given to cylinders. As nozzles of cylinders are screwed in close proximity to inlet valves, more exact control of a ratio of gasoline and air in gas mixture is provided

Fuel pump and highway of supply of fuel

Fuel is selected from a tank, moves in system of injection and comes back in a tank via two metal pipelines mounted under the body bottom. The electric fuel pump is mounted together with the fuel level sensor in a tank. Vapors of gasoline and heated gasoline come back to a tank on the certain highway.

The fuel pump turns on at a stage of launch of the engine a starter or right after start of the engine. During start-up and operation of the engine on the control unit reperny impulses from the block of electronic ignition arrive (see subsection 3.3.8). The fuel pump is switched-off later 2–3 sec. after the termination of receipt of reperny impulses.

System of production of exhaust gases