Audi 100

1982-1990 of release

Repair and operation of the car

Audi 100
+ 1.1. Governing bodies and devices
+ 2. Technical characteristics
- 3. Engines
   + 3.1. Four-cylinder engines
   + 3.2. Five-cylinder engines
   - 3.3. Diesel engine
      3.3.1. Check of a tension of a belt of the drive of the fuel pump of a high pressure
      3.3.2. Adjustment of a tension of a belt of the TNVD drive
      3.3.3. Check of candles of an incandescence
+ 4. Cooling system
+ 5. Exhaust system
+ 6. Power supply system
+ 7. Transmission
+ 8. Running gear
+ 9. Steering
+ 10. Brake system
+ 11. Body
+ 12. Electric equipment

3.3. Diesel engine

GENERAL INFORMATION

Diesel engine

1 – oil case;
2 – laying of a case;
3 – receiver of the oil pump;
4 – oil pump;
5 – sealing ring of the water pump;
6 – water pump;
7 – cogwheel of a cranked shaft;
8 – camshaft drive belt;
9 – bolt of fastening of an intermediate pulley;
10 – camshaft drive cover the lower;
11 – vibroquencher;
12 – a bolt of fastening of a vibroquencher to a cogwheel of a cranked shaft;
13 – bolt of fastening of a cogwheel of a cranked shaft;
14 – generator drive belt;
15 – camshaft drive cover the top;
16 – bolt of fastening of a cogwheel of a camshaft;
17 – washer;
18 – camshaft cogwheel;
19 – camshaft drive cover the back;
20 – rack of fastening of the top cover;
21 – intermediate pulley;
22 – cogwheel of the water pump;

23 – oil filter;
24 – head of the block of cylinders;
25 – bolt of fastening of a head of the block;
26 – laying of a cover of a head;
27 – block head cover;
28 – stopper of a maslozalivny mouth;
29 – cogwheel of the drive of the fuel pump;
30 – belt of the drive of the fuel pump;
31 – washer;
32 – bolt of fastening of a cogwheel of the drive of the fuel pump;
33 – cover of a belt of the drive of the fuel pump;
34 – laying of a head of the block;
35 – block of cylinders;
36 – cogwheel of the fuel pump;
37 – bolt of fastening of a cogwheel of the fuel pump;
38 – fuel pump of a high pressure;
39 – nut of fastening of the fuel pump;
40 – pipelines of a high pressure

The diesel engines installed on Audi 100 cars five-cylinder, have much in common with five-cylinder petrol Audi engines. As the diesel engine has no system of ignition, for start of the engine in the combustion chamber of each cylinder there is a glow plug which heats air in the cylinder. The timer of heating provides giving of current on glow plugs both in time, and after start of the engine. Engines of models CM and OE are equipped, besides, with the device of start of the cold engine which is built in the fuel pump 38 of a high pressure (TNVD).

NC and 3D engines have in TNVD the electric heating device for simplification of start of the cold engine.

The pump creates a high pressure (13–17 MPas), and fuel moves in cylinders. The TNVD regulator provides supply of fuel depending on the provision of a pedal of an accelerator.

The combustion chamber has such form that at compression air in the cylinder swirls: it allows to mix better the injected fuel with air. Before TNVD the fuel filter which detains pollution and water is installed.

In use TNVD does not demand leaving. The pump is put in action by a gear belt 30 from a camshaft.

The diesel engine is equipped with the electromagnetic valve which stops supply of fuel at ignition switching off. During start of the diesel at turn of a key in the ignition lock on this valve tension via the switch of candles of an incandescence moves, and the valve opens a fuel-supply line.