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
      The general data
      Removal and installation of a gear belt, engines of 1.9 l (AVB, AWX, AVF)
      Натяжитель a belt with демпфированием a friction
      Removal and installation of a head of cylinders, diesel engines of 1.9 l (AVB, AWX, AVF)
      Removal and installation of a belt of a drive of auxiliary units
    6-cylinder diesel engines
    System of greasing of the engine
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




4-cylinder diesel engines

The general data

The diesel 4-cylinder engine of 1.9 l TDI

1 — the Camshaft
2 — the Block the pump-atomizer
3 — the Gear belt
4 — the Candle накаливания
5 — Klinovoj a belt
6 — the Cranked shaft

7 — the Oil pump
8 — the Index of level of oil
9 — the Oil filter
10 — the Flywheel
11 — an oil Refrigerator
12 — the Refrigerator of air of pressurisation (интеркулер)

Engines of 1.9 l – line, with one верхнерасположенным a cam-shaft (OHC). The Camshaft located in a head of cylinders, is set in motion through a gear belt from a cranked shaft. Fuel injection is carried out by pumps-atomizers in which are united the fuel pump of a high pressure (ТНВД), the valve of management and an atomizer. Pumps-atomizers are set in motion from a camshaft through additional cams. The engine is equipped турбокомпрессором with changeable geometry turbines (VTG-supercharger).