since 1993 of release
Repair and car operation
+ Operation manual
+ Routine maintenance
+ engine Repair
+ Systems of cooling, heating
- Power supply system and release
- Power supply system - petrol models
Removal and installation of assembly of an air purifier
Removal, installation and adjustment of a cable of gas
Removal and installation of a pedal of gas
Unleaded fuel - the general information and use rules
Systems of injection of fuel - the general information
Sbrasyvaniye of pressure in a power supply system
Removal and installation of the fuel pump
Removal and installation of the sensor of fuel consumption
Removal and installation of a fuel tank
Check of a condition and adjustment of system of injection of fuel
Removal and installation of the case of a throttle
Removal and installation of components of Bosch Motronic 5.1 system
Removal and installation of components of Magneti-Marelli 8Р system
Removal and installation of the inlet pipeline
Removal and installation of a final collector
+ the Power supply system - diesel models
+ Systems of decrease in toxicity and production of the fulfilled gases
+ engine Electric equipment
+ Power shafts
+ Uniform hydraulic system
+ Brake system
+ Running gear and steering
+ Body and salon furnish
+ Onboard electric equipment
+ electric equipment Schemes
Systems of injection of fuel - the general information
Bosch Motronic MP5.1 system (models of 1.8 l with RKPP)
The control system of the Bosch Motronic MP5.1 engine (see an illustration the Function chart of system of the distributed injection of Bosch Motronic MP5.1) is used at a complete set of models of 1.8 l with RKPP. The system which structure includes the catalytic converter of the closed contour and system of catching of fuel evaporations, answers the most last standards of protection of environment. Detailed information on functioning of responsible installation of ignition of a part of system is provided in Head engine Electric equipment. The principle of supply of fuel in the engine is described below.
The fuel pump shipped in a fuel tank carries out supply of fuel to the fuel highway of system of injection. The linear fuel filter preventing a contamination of injectors is switched on in the highway of supply of fuel. The pressure of supply of fuel is supervised by the regulator of pressure established in the fuel highway. If pressure in a power supply system rises above a preset value, the regulator provides return of excess of fuel back in a fuel tank. All four injectors open at the same time at each turn of a cranked shaft and provide fuel injection in the inlet pipeline.
The electric control system consists of ECU and a set of information sensors:
ECU, on the basis of the analysis of the signals arriving from information sensors, defines optimum structure of an air and fuel mix at the moment time and corrects it by adjustment of duration of opening of injectors of injection. Thus, the structure of a mix is constantly supervised ECU and all the time answers the current operating conditions of the engine (warming up, single turns, movement with cruiser speed, acceleration, braking by the engine, etc., etc.).
ECU carries out also complete control over idling turns via the valve of additional air in case of need providing possibility of a perepuskaniye of soaked-up air bypassing a throttle. At the closed butterfly valve of ECU operates valve opening, regulating thereby supply of air in the inlet pipeline and supporting at demanded level engine turns.
Besides the listed functions, ECU exercises administration of functioning of systems of release and catching of fuel evaporations (see. Systems of decrease in toxicity and production of the fulfilled gases).
The case of a throttle is equipped with an electric heating element power supply giving on which also supervises ECU, carrying out heating of the throttle chamber at cold starts and preventing a butterfly valve icing.
Air moves in cylinders via four inlet channels with various cross-section section (consistently increasing). Supply of air is regulated by a butterfly valve. The air filter is built in a head of cylinders and its cover at the same time serves as a head cover (see an illustration the Scheme of supply of air in the engine). Besides an air filtration the air purifier serves also as an oil separator for removal of karterny gases.
In case of violation of serviceability of functioning of any of information sensors, ECU automatically passes to a mode of the closed contour. False data thus arriving from the faulty sensor are ignored and instead of them some is used put in memory of the control unit average value of under control parameter. Efficiency of functioning thus, remaining quite adequate, can decrease a little. Transition of system to a mode of the closed contour is accompanied by inclusion of the control lamp built in in an instrument guard. In the block of memory of ECU the corresponding code of malfunction registers.
At operation of a control lamp the car at the first possibility should be driven away on car repair shop where complete diagnostics of a control system by the engine with use of the special electronic input reader will be made. The diagnostic socket for connection of the input reader is located near the assembly block of safety locks on the car dashboard.
Magneti-Marelli 8Р system (models of 1.6 l, 1.8 l [with AT] and 2.0 l [except RFY])
The control system of the Magneti-Marelli 8Р engine (see an illustration the Function chart of system of the distributed injection of Magneti-Marelli 8Р ) is used on models of 1.6 l, 1.8 l from AT and 2.0 l with 8-клапанными engines. Information on functioning of responsible installation of ignition of a part of system is provided in Head engine Electric equipment.
The system by a principle of functioning is very close to described above Bosch MP5.1. The unique difference is made by a control system of idling turns.
In Magneti-Marelli ECU system exercises administration of idling turns by means of the special step-by-step motor established on the case of a throttle. The motor is equipped with a pusher supervising extent of opening of the bypass channel, on which air перепускается in the inlet pipeline bypassing the throttle chamber. At the closed butterfly valve of ECU exercises administration of supply of air in the inlet pipeline by means of the step-by-step motor, providing control over idling turns. The channel is used by Perepuskna also as a source of additional air at cold starts of the engine.
Bosch Motronic MP3.2 system (model of 2.0 l of RFY)
This system (see an illustration the Function chart of system of the distributed injection of Bosch Motronic MP3.2 ) is used on models of 2.0 l with 16-klapanny engines (RFY) and in the real Management to detailed consideration is not subject. Let's notice only that many components carry out the same functions that the same components of Magneti-Marelli system, taking into account listed below differences.
Injection injectors in the distributive pipeline have individual management. Fuel is injected into cylinders in turn through each two turns of a cranked shaft.
The regulator of pressure of fuel provides a constant pressure in the 3rd bar at any modes of operation of the engine.
The system of an admission of air of 16-klapanny RFY engines has a special design. Let's not go deep in particular functioning of the inlet pipeline, we will specify only that the pipeline consists of two channels of various length and various cross-section section. This system allows to achieve increase in a torque of the engine on low turns.
ECU provides fuel interruption of supply at movement nakaty on turns lower 1280 in a minute and renews a food at excess of this value.
For protection of the engine against overloads injection of fuel interrupts at excess by frequency of rotation of the engine of value in 6840 rpm. The sensor of turns is established on a head of cylinders.