VW Sharan repair. Diesel engines: 1,9 l of TDI.
+ 1. Introduction
+ 2. VR6 engine
+ 3. Two-liter engine (ADY)
+ 4. System of greasing of the engine
+ 5. Cooling system
- 6. System of injection of fuel of the VR6 engine
6.1. Precautionary measures at work on repair of system of injection
6.2. A principle of work of ESUD under various conditions
+ 6.3. Injection system
+ 6.4. Malfunctions of system of injection
+ 6.5. Work on repair and service of system of injection
6.6. Cable of a drive of a butterfly valve
+ 6.7. Electric fuel pump
6.8. Fuel filter
6.9. The fuel level sensor in a tank
6.10. Air filter
+ 7. Simos system of injection of fuel of the 2,0-liter engine
+ 8. Ignition system
+ 9. Coupling
+ 10. Mechanical 5-step transmission
+ 11. Shaft of a drive of wheels
+ 12. Hydraulic booster of a steering
+ 13. Forward suspension bracket
+ 14. Back suspension bracket
+ 15. Brake system
+ 16. Electric equipment
+ 17. Diesel engine
+ 18. System of greasing of the diesel engine
+ 19. System of cooling of the diesel engine
+ 20. Power supply system of the diesel engine and turbokompressor
+ maintenance Card
+ Specifications and characteristics
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Repair Sharan/Sharan Volkswagen>> System of injection of fuel of the VR6 engine>> Principle of work of ESUD under various conditions
At inclusion of ignition of EBU includes an electrogasoline pump which creates pressure of fuel in the distributive highway. During the same time of EBU processes a signal from the sensor of temperature of cooling liquid for determination of duration of impulses of injection necessary for start-up. When the cranked shaft of the engine at start-up starts to be turned, EBU forms an impulse of inclusion of the nozzles which duration depends on temperature of cooling liquid.
At start-up of the cold engine the impulse of injection increases, nozzles open on a bigger period and inject bigger amount of fuel (more saturated working mix turns out).
At start-up of the EBU heated-up engine having received information on temperature of cooling liquid, gives command for closing of the established valve of stabilization of idling, as a result duration of an impulse of injection decreases, and time of opening of nozzles is reduced to the nominal.
Idling information on EBU arrives from the potentiometer of a butterfly valve being in the case of a butterfly valve, and the sensor of a mass consumption of air. At decrease in frequency of rotation there is a change of the moment of ignition and duration of an impulse of injection owing to what the amount of injected fuel increases increases.
At normal operation of the engine the provision of a butterfly valve and passing through the sensor of a mass consumption of air amount of let-in air define duration of opening of nozzles and by that power setting.