Audi A4, S4

Since 2000 of release

Repair and car operation



Audi A4, S4
+ Introduction
+ Controls and receptions of safe operation
+ Current leaving and service
- The engine
   Specifications
   Removal and installation of the top cover of the engine / the bottom protection of an impellent compartment/stretcher
   Compression check in engine cylinders, revealing of leaks
   Check of the engine by means of the vacuum gauge
   + 4-cylinder petrol engines
   + 6 and 8-cylinder petrol engines
   + 4-cylinder diesel engines
   + 6-cylinder diesel engines
   - System of greasing of the engine
      The general data
      Applied impellent oils. The oil expense
      The oil pump and the pallet картера
      Check of pressure of oil and the pressure gauge
+ Systems of cooling, heating and the air conditioner
+ Power supply systems, release and decrease in toxicity of the fulfilled gases
+ Systems of an electric equipment of the engine
+ Manual box of a gear change
+ Automatic transmission
+ Coupling, power shafts and differential
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment



System of greasing of the engine

The general data

Engines are equipped by circulating system of greasing under pressure.

The oil pump sucks in oil through a grid from the pallet картера and submits it under pressure to system through the oil filter. On an exit from the oil pump is редукционный the valve. At increase of pressure above the established value the valve opens also an oil part merges back in the pallet картера.

Through the central aperture of the oil filter oil arrives directly in the main channel. At a contamination of the oil filter перепускной the valve directs oil to system not filtered.

From the main oil highway channels for greasing of bearings of a cranked shaft branch off. Through inclined apertures in a cranked shaft oil moves to шатунным to bearings. For cooling of pistons oil is injected on them from below through atomizers.

Simultaneously oil through vertical galleries reaches heads of cylinders and arrives for greasing of bearings of camshafts and elements клапанных system mechanisms timing.

Depending on capacity of the engine oil can be cooled in additional маслоохладителе, located sideways, at the case of the oil filter and included in a contour of system of cooling of the engine.