System of ventilation of a case (PCV). BMW the 5th E28/E34 series (from 1981 to 1993 of release)
Repair of BMW E28 and series E34 from 1981 to 1993
1. Cars of the BMW brand of 5-series
2. Engine
3. Cooling system
4. Power supply system
5. Ignition system
6. Control systems of the engine and decrease in toxicity of the fulfilled gases
6.1. General information
6.2. General information about self-diagnostics of a control system by the Motronic engine
6.3. Removal and installation of the electronic control unit (ECU)
6.4. Information sensors
6.5. System of ventilation of a case (PCV)
6.6. Catching system паров gasoline (EVAP)
7. System of production of the fulfilled gases
8. Coupling
9. Manual box of gear shifting (RKPP) and automatic transmission (AT)
10. Transmission line
11. Steering and suspension bracket
12. Brake system
13. Body
14. Control body sizes
15. Heater and air conditioner
16. System of onboard electric equipment
17. Routine maintenance of the car
18. Size table and adjusting data
19. Schematic electric circuits
20. Governing bodies and operation receptions
21. System of onboard diagnostics - a principle of functioning and codes of malfunctions


6.5. System of ventilation of a case (PCV)

The system of ventilation of a case (PCV) reduces contents of carbohydrates in the fulfilled gases at the expense of removal karterny паров. It is carried out by means of circulation of the gases which have broken in a case and their direction through an air purifier in the inlet pipeline.

Such system PCV is isolated. The gases which have broken in a case arrive in an air purifier or an air inlet at the expense of pressure in a case. On the majority of models mixing of gases with fresh air or passing of gases through a dozhigayushchy trap as it becomes in usual systems is not applied. On these models it is not established ordinary PCV valves - simply hoses. Disconnect from a cover of a head of cylinders PCV hose.

The main components of PCV system are hoses which connect a cover of a head of cylinders and the case of a throttle or an air purifier. If there are abnormal working conditions (such as problems with piston rings), the system is calculated on sending superfluous amount of the broken gases on the pipeline of ventilation of a case in admission system that gases were used in normal process of combustion. It is expedient to check surplus of products of burning from the karterny gases circulating on hoses and unions - they can periodically cork system and cause increase in the block of cylinders of pressure

As in these models the filtering element is not used, it is expedient to check PCV system channels on a blockage shlamy and combustion products.

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6.4. Information sensors
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6.6. Catching system паров gasoline (EVAP)