Repair and service Audi A8 in body D2 with 1994 for 1999 of release.
1. Car operation
2. Maintenance service
3. Petrol engines of 2,8 l
4. Petrol engines of 3,7 and 4,2 l
5. Diesel engines of 2,5 l
6. Diesel engines of 3,3 l
7. Systems of ignition and injection of fuel of petrol engines
8. System of release of the fulfilled gases of cars with petrol engines
9. The power supply system of diesel engines
10. System of prestarting heating of diesel engines
11. System of release of the fulfilled gases of cars with diesel engines
11.1. The general data
11.2. Турбокомпрессор
11.3. System of release of the fulfilled gases
12. Greasing system
13. Cooling system
14. Coupling
15. A transmission
16. Shaft of a drive of forward wheels
17. Features of a design of transmission of all-wheel drive cars
18. A suspension bracket
19. Wheels and tyres
20. A steering
21. Brake system
22. A body
23. Heating and air-conditioning system
24. An electric equipment
25. Electric schemes


11.1. The general data

The system of release of the fulfilled gases consists of a final collector, турбокомпрессора, a reception exhaust pipe, the central and back mufflers, catalytic neutralizer of the fulfilled gases.
Elements of system of release are connected by carving connections or collars.
On cars with diesel engines to decrease in toxicity of the fulfilled gases it is applied noncontrollable каталистический oxidising neutralizer.

Fig. 5.3–1. Elements of a control system of increase of pressure of air arriving in the engine: 1 – to сапуну on the case of the air filter; 2 – a vacuum hose to the vacuum tank or the vacuum pump; 3 – a vacuum hose from the electromagnetic valve of an elevated pressure; 4 – the vacuum amplifier of brakes; 5 – the vacuum tank; 6 – the unilateral valve; 7 – the vacuum pump; 8 – to the switch of the valve of inlet collector N239; 9 – a vacuum hose from valve N18 to the mechanical valve of system рециркуляции the fulfilled gases; 10 – the electromagnetic valve of management of increase of pressure N75; 11 – valve EGR N18

Maintenance reduction оксидов nitrogen in the fulfilled gases of the diesel engine is reached at the expense of installation on the system car рециркуляции the fulfilled gases (EGR). Valve EGR (fig. 5.3–1) systems рециркуляции is established in a knee of system of release and copes a vacuum regulator. Through valve EGR on the heated-up engine the part of the fulfilled gases goes to chambers of combustion of the engine therefore the temperature decreases and the maintenance оксидов nitrogen in the fulfilled gases decreases.

The inhaling moments, Н*м
Турбокомпрессор to an intermediate element
Маслопровод to an inlet collector
Knee of a final collector to турбокомпрессору
Reception exhaust pipe to турбокомпрессору
Reception exhaust pipe with neutralizer to an intermediate element
Thermofilter to турбокомпрессору

11. System of release of the fulfilled gases of cars with diesel engines

11.2. Турбокомпрессор