BMW 3 series E46
Since 1998 of release
Repair and car operation
The BMW of 3 series Е46
+ Cars BMW 3 (Е46)
+ Current leaving and service
- The engine
+ Procedures of repair of the engine
- System of greasing of the engine
Contour of circulation of oil
Removal and pallet installation crankcase
Check of pressure of oil
+ Systems of cooling, heating
+ Power supply systems, injection and release
+ Engine electric equipment
+ Manual transmission and transmission a line
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Onboard electric equipment
+ Electric equipment schemes
Contour of circulation of oilEngines are supplied by so-called system of greasing under pressure. The oil pump soaks up through a grid impellent oil from the pallet crankcase and submits it under pressure through the oil filter. On the party of pressure of the oil pump is редукционный the valve. Through the central pipeline of the oil filter the filtered oil arrives in the main oil channel. At a contamination of the oil filter перепускной the valve directs oil without its filtration directly to the main oil channel.
Behind the oil filter it is located редукционный the valve. At excess of pressure the valve opens, and the oil part merges back in the pallet crankcase.
From the main oil channel channels of greasing of bearings of a cranked shaft branch off. Through inclined channels in cranked to a shaft oil arrives to шатунным to bearings. Cooling of the bottom of the piston is carried out through the atomizers submitting oil from below on the piston.
Simultaneously impellent oil arrives through vertical pipelines in a head of cylinders, supplying with oil camshaft bearings, jacks клапанных backlashes and directing valves. Resistance on plum provide the guaranteed giving of oil for greasing of the specified elements in a head of cylinders. At 6-tsilndrovogo the petrol engine oil through the valve moves also depending on requirement for the mechanism of adjustment of a camshaft.
Besides, oil moves to chains of drive ГРМ, and at the 6-cylinder engine the chain of a drive of the oil pump is greased.
The oil expense
At an internal combustion engine the oil expense is understood as quantity of oil which is consumed owing to combustion process. At all it is not necessary to understand as it the expense of oil connected with its leaks owing to негерметичности through the pallet crankcase, a cover of a head of cylinders etc.
The normal expense of oil develops of combustion of a small amount of oil in cylinders, together with tap of the fulfilled gases, and deterioration. Besides, oil is lost as a result of influence of a heat and a high pressure arising in the engine. Oil loss is affected also by service conditions as, for example, style of driving, and also admissions of manufacturing of elements of the engine. The oil expense should not be more 1.0л/1000 km.