Mitsubishi Galant

1990 — 2001 of release

Repair and car operation



Mitsubishi Galant
+ Identification numbers of the car
+ Governing bodies
+ Settings and routine maintenance
+ Engine
+ cooling and heating Systems
- Power supply system and release
   Specifications
   Sbrasyvaniye of pressure in a power supply system
   Removal and installation of the case of a throttle
   Removal and installation of the fuel highway and injection injectors
   Check of a condition and replacement of fuel lines and their shtutserny connections
   Check of serviceability of functioning of injectors
   Removal and installation of a regulator of pressure of fuel
   Removal and installation of a safety valve of a fuel tank
   Removal and installation of a fuel tank
   Cleaning and repair of a fuel tank - general information
   Check of serviceability of functioning of the fuel pump, measurement of pressure of fuel
   Removal and installation of the fuel pump/sensor of fuel consumption
   Removal and installation of assembly of an air purifier
   Release system
+ engine Electric equipment
+ Control systems of the engine
+ Manual transmission
+ Coupling and transmission line
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment


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Power supply system and release

General information and precautionary measures

The power supply system consists of the fuel tank placed in it of the electric fuel pump, the main EFI relay, injectors of injection, a regulator of pressure of fuel, assembly of an air purifier and the throttle case. All models are equipped with electronic system of the distributed injection of fuel (MPI).

System of the distributed injection of fuel (MPI)

In considered system for management of fuel injection through injectors directly to the inlet port of each of chambers of combustion of the engine electric impulses of accurately limited duration are used. The moment and duration of time of opening of each of injectors supervises the electronic module of management (ESM) of system. ESM continuously traces working parameters of the engine and on the basis of the analysis of arriving information defines the demanded volume injected in each of inlet ports of fuel. Parallel to ESM exercises also administration of installations of turns of idling and a corner of an advancing of ignition. The case of a throttle serves only for management of giving in an air power supply system. In view of that each of cylinders is equipped own, located in close proximity to the inlet valve, an injector, this scheme provides possibility of very exact management with structure of an air and fuel mix.

Fuel arrives to injectors under the constant pressure which size exceeds pressure in the inlet pipeline. The regulator of pressure of fuel supports continuous difference of pressure between entrance and target section of each of injection injectors. The regulator is equipped with the locking valve, a sensitive element of membrane type and the loaded spring. Management of pressure difference is carried out by a fuel drosselirovaniye in a gap between the locking valve and its saddle. Excess of fuel on the returnable line is taken away back in a fuel tank.

As fuel moves on each of injectors with a constant pressure, the amount of fuel injected into the engine is defined only by duration of opening of the injector which management carries out ECM. The same module watches compliance of phases of a gazoraspredeleniye and ignition.

The damper of pulsations of pressure of fuel (if that is provided) serves for elimination of the wave formation arising in gasoline pipe lines during the moments of opening and closing of injectors of injection. The damper is equipped with the air and fuel chambers divided by a membrane which actually and makes clearing of elastic fluctuations in a fuel stream.

The amount of air submitted to the engine is defined by the provision of a butterfly valve and frequency of rotation of a cranked shaft. The sensor of measurement of a stream of air established in an inlet path delivers to the management module information, on the basis of which ESM defines demanded duration of opening of injectors.

If the return is not stipulated by character of a carried-out task before starting service of components of a power supply system without fail disconnect a negative wire from the battery. Always keep in readiness the class B fire extinguisher.

Before removal of components (injectors, the fuel highway, a pressure regulator) / a detachment of lines of a fuel path do not forget to dump pressure in a power supply system. Try not to allow fuel hits on open sites of a body. It is necessary to wind the shtutserny socket subject to a rassoyedineniye with rags in order to avoid a razbryzgivaniye of fuel staying under residual pressure. At once collect the spilled fuel the paper towels which sufficient stock always should be near at hand.

Fuel pump and gasoline pipe lines

Supply of fuel from a fuel tank in system of injection and return of its surplus back in a fuel tank is carried out on two metal lines laid under the bottom of the car. The electric fuel pump of rotor type is located by Pogruzhna in a fuel tank and united in uniform assembly with the block of the sensor of fuel consumption. On an exit of a gasoline pump the fuel filter providing a filtration of particles in the size to 20 ÷ 30 microns is provided.

The system of return of fuel evaporations carries out branch паров fuel back in a fuel tank on the separate returnable line.
The fuel pump continues to function during all operating time of the engine, i.e. while ESM receives basic impulses from electronic system of ignition (see. Head engine Electric equipment). 2 ÷ 3 second later after interruption of supply of basic impulses the pump stops.

At an otpuskaniye of shtutserny sockets use two wrenches what to allow to avoid undesirable and dangerous deformations of fuel lines. Strictly watch observance of standard requirements to efforts of a tightening of sockets. Remember that sealing rings of shtutserny connections when joining the last are subject to replacement without fail.

System of production of the fulfilled gases

The system of production of the fulfilled gases consists of the final collector equipped with the oxygen sensor (ов), a reception pipe, the catalytic converter, and the exhaust silencer.

The catalytic converter is the main component of system of decrease in toxicity of the fulfilled gases. The monoblock converter can be applied in a combination with three-functional reduktsionny (Control systems for more details see in Head of the engine).