since 1994 of release
Repair and car operation
+ Maintenance instruction
+ 3. Engine (two top camshafts)
+ cooling System
- Fuel and exhaust systems
5.2. System of injection of fuel
5.3. Modes of functioning of system
+ 5.4. Main knots of system
+ Electric chain
+ 7. Ignition system
+ 8. Electronic control unit and sensors
+ 10. Five-speed transmission and main RPO MM5 broadcast
+ 11. Automatic Transmission
+ Running gear
+ 14. Forward suspension bracket
+ 15. Drive of forward wheels
+ 16. Back suspension bracket
+ Brake system
+ Heating, ventilation
+ Electric equipment
EBU carries out dispensing of the fuel arriving in the Engine, on the basis of processing of signals of several sensors. EBU supports some operating modes of MSVT which are described below.
Mode of start-up of the engine
At inclusion of ignition of EBU starts for two seconds the fuel pump which lifts pressure in fuel system. At the same time EBU processes signals of sensors of temperature of cooling liquid (DTZh) and the provision of a butterfly valve (DDZ) and counts demanded for engine start-up structure of a toplivovozdushny mix. The structure of a toplivovozdushny mix depends on temperature of cooling liquid and oт 1:1,5 can change at–36 ° C дo 1:14,7 at 94 ° C. EBU regulates amount of the fuel arriving in the inlet pipeline, at the expense of change of duration of phases of opening and closing of valves of nozzles. For management of electromagnetic valves of nozzles the electric signal of an alternating voltage is used.
Mode of a purge of cylinders
At strong enrichment of a toplivovozdushny mix and difficulty of start of the EBU engine provides possibility of a purge of cylinders for removal of superfluous fuel and drying of spark plugs. At complete opening throttle the zaslonka and frequency of rotation of a cranked shaft of the engine approximately to 400 rpm of EBU stops supply of fuel. If a little to cover a butterfly valve (extent of opening of a zaslonka should not exceed about 80 %), EBU will return MSVT in a mode of start-up of the engine.
The operating mode has two versions. EBU can operate MSVT in a mode with the closed or opened feedback (OS).
THE OPENED FEEDBACK
At engine start-up when frequency of a cranked shaft exceeds 400 rpm system starts to work in a mode from opened OS. In this EBU mode carries out fuel dispensing only on the basis of processing of signals of DTZh and DAD. The signal of DKK is not considered. EBU supports an operating mode from opened OS until the following conditions will be satisfied.
1) Tension of a signal of DKK starts to change that testifies about пригреве the sensor to working temperature.
2) The signal of DTZh corresponds to threshold value of temperature.
3) Passed the set period after engine start-up.
– increases in duration of opening of fuel nozzles;