Honda Accord

1998-1999 of release

Repair and operation of the car

Honda Chord
+ Cars of the Honda Accord brand
+ Settings and routine maintenance
+ Engine
+ Cooling systems, heating
- Power supply system and release
   Dropping pressure in a power supply system
   Check of serviceability of functioning of the fuel pump, measurement of pressure of fuel
   Check of a state and replacement of fuel lines
   Removal and installation of the fuel pump
   Check of a state and replacement of the sensor
   Removal and installation of a fuel tank
   Cleaning and repair of a fuel tank - general information
   Removal and installation of assembly of the air cleaner
   Removal, installation and adjustment of a cable of an accelerator
   System of electronic injection of fuel (EFI) - the general information
   Check of serviceability of functioning of system of injection
   Removal and installation of the case of a throttle
   Removal and installation of the regulator of pressure of fuel
   Removal and installation of the fuel highway and injectors of fuel
   System of release - the general information
+ Electric equipment of the engine
+ Engine management
+ gear shifting Box
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Schemes of electric equipment

System of electronic injection of fuel (EFI) - the general information

All cars considered in the present manual are equipped with system of programmable injection of fuel (PGM-FI) which can be functionally broken into three main subsystems: system of air supply, electronic control system and fuel supply system. Control of functioning of system is exercised by RSM, developing necessary teams on the basis of the data arriving from information sensors (temperature of cooling liquid, the provision of a butterfly valve [TPS], absolute pressure in the pipeline [MAR], etc.). On the basis of the analysis of information of RSM arriving from sensors defines composition of air and fuel mix optimum at the moment.

Functioning of system of injection is close crossed with work of system of decrease in toxicity of the fulfilled gases more detailed information on which can be obtained from the Head's materials Engine management.

System of air supply

The system consists of the air cleaner, air sleeves, the case of a throttle, the device of stabilization of turns of idling and the inlet pipeline. The inlet pipeline of both 4-cylinder engines, and V6 engines consists of two sections: lower (actually pipeline) and top (delivery chamber). Procedures of removal and installation of both sections are described in the Head Dvigatel.

Cases of a throttle has a single-chamber cross and line design. The lower part of the case of a throttle is warmed up by cooling liquid of the engine in order to avoid frosting in frosty weather. The screw of adjustment of turns of idling is located from above on the throttle case. The sensor of provision of a butterfly valve (TPS) is connected to an axis of the last and traces extent of its opening.

On single turns of the engine the composition of air and fuel mix is controlled by system of stabilization of turns of idling (IAC) which part RSM are, the electronic sensor of temperature of cooling liquid (eats), the IAC valve and a set of information sensors (the sensor of temperature of the soaked-up air [IAT], the sensor of provision of a butterfly valve [TPS], the sensor of absolute pressure in the pipeline [MAR], etc.), - see also Head Engine management. Control of functioning of the IAC valve is exercised by RSM, proceeding from information on the current load of the engine (functioning To/in, the power steering, temperature of cooling liquid, etc.) . The valve makes adjustment of an expense of the air throttle coming to the inlet pipeline via the case. Developing commands for operation of the IAC PCM valve is guided by the data arriving from various information sensors and allowing to determine the current speed of the movement of the car, temperature of cooling liquid, a state To/in it (is included/is switched off), use of the power steering, etc. In order to avoid violation of stability of turns of idling at start of the engine the IAC valve opens in the course of a provorachivaniye of a cranked shaft at once after implementation of start for the purpose of ensuring giving of additional mass of air in the inlet pipeline.

Electronic control system

The structure and the principle of functioning of an electronic control system and RSM are in detail considered in the Head Engine management.

Fuel supply system

Are among components of a fuel supply system: electric fuel pump, fuel pressure regulator, injection injectors, damper of pulsations of fuel, injection injectors, fuel highway and main relay of a power supply system.

The electric fuel pump is located in a gasoline tank. The pump sucks in fuel from a tank through the filtering element, then pumps over it via the additional fuel filter and gives to injection injectors. Also safety valve preventing excessive increase of pressure of fuel in case of violation of passability of a path is provided.

The regulator of pressure of fuel provides a constant pressure of supply of fuel to injectors. Excess fuel on the returnable line goes back to a gasoline tank.

Injectors represent electromagnetic valves of the constant course. The main components of an injector are: the operating electromagnet, a plunger and the needle valve. All listed details are placed in the general case. When passing electric current on the solenoid coil the needle valve is slightly opened, fuel under a pressure fills a cavity of the case of an injector and vypryskivatsya through its nozzle in the combustion chamber of the corresponding cylinder. The amount of injectable fuel is defined by duration of time of opening of the valve, i.e., duration of giving of tension on the electromagnet coil. For the purpose of the restriction of current missed through injectors the electrical wiring of chains of the last turns on resistors.

Lasting inclusions of injectors RSM operates. In memory of the module basic values of time of opening of valves for various combinations of the entering parameters (turns of the engine and amount of the soaked-up air) are put. Necessary information arrives on the module in the form of signals from various sensors of the engine.

The main relay of system of injection is installed at the left or on the right before a windshield under the panel of a fairing and the second consists of two working elements one of which represents the RSM relay and injectors of fuel, and - the relay of the fuel pump.