Audi A4, S4

since 2000 release

Repair and operation of the car



Audi A4, S4
+ Introduction
+ Governing bodies and methods of safe operation
+ Current leaving and service
+ Engine
+ Cooling systems, heating and air conditioner
- Power supply systems, release and decrease in toxicity of the fulfilled gases
   + Power supply systems of petrol and diesel engines
   + System of injection of fuel of the petrol engine
   + System of injection of fuel of the diesel engine
   + Systems of release and decrease in toxicity of the fulfilled gases. Turbocompressor
+ Systems of electric equipment of the engine
+ Manual box of gear shifting
+ Automatic transmission
+ Coupling, power shafts and differential
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment




Смотрите здесь focus room.


Power supply systems, release and decrease in toxicity of the fulfilled gases

Specifications

Separate characteristics are provided also in the text of the Head and in case of obligation of their performance are highlighted in bold type

Fuel

Characteristic

Value

Fuel tank, l

Capacity

70 (66 on models with the full drive)

Petrol models

Unleaded gasoline is not worse than AI-95/A-85, perhaps temporary use of unleaded gasoline is not worse than AI-91/A-82.5. Thus engine capacity will decrease a little, at increase in fuel consumption

Do not apply additive to fuel. They can result in the increased wear or damage of the engine.

Diesel models

Summer and winter diesel fuel No. 2 or No. 1 on ASTM D975

Do not apply ship (Marine Diesel Fuel), diesel fuel boiler, etc.

When using diesel fuel with the content of sulfur over 0.5%, make replacement of motive oil each 7500 km.

Winter fuel, provides normal working capacity to -20 °C.

Thanks to preliminary heating of fuel at the included system of heating of the car, the car on winter diesel fuel can be operated, as a rule, without refusals at a temperature of external air up to -25 °C.

Do not add gasoline to diesel fuel.

In case of use of summer diesel fuel, and also at a temperature of external air below -15 °C it is necessary to add certain, depending on temperature of external air quantity of means for improvement of fluidity or kerosene to fuel.

Means for improvement of fluidity can be used also in combination with kerosene.

You can receive the certificate of funds for HUNDRED.

The additive share taking into account temperature of external air has to be minimum.

The kerosene share in mix has to make no more than 50%.

Add additive to diesel fuel before loss of property of fluidity of diesel fuel owing to release of paraffin. Faults owing to release of paraffin can be rectified only heating of all power supply system.

Carry out mixing of diesel fuel with kerosene only in a fuel tank. For this purpose in a tank at first fill in kerosene, and then add diesel fuel.

After that the engine has to work some time in order that mix was distributed on all power supply system.

Fire-dangerous! Additives of kerosene lead to decrease in a point of ignition of diesel fuel. Thereof danger at the treatment of fuel mix increases. Follow the corresponding safety regulations!

System of injection of the petrol engine

Electronic microprocessor system of the distributed injection (direct injection on the AWA engine) with the thermometric measuring instrument of mass of the soaked-up air, an electronic accelerator. On the ALT engine - the inlet pipeline with changeable geometry

Engines 1.6, 2.0 of l (ALT) 14 - 17

Characteristic

Value

Type

Engine of 1.6 l Simos
Engine of 1.8 l ME 7.5
Engine of 2.0 l (AWA) MED 7.1.1
Engine of 2.0 l (ALT) ME 7.5
L engines 2.4, 3.0 ME 7.1.1

Idling turns, in the min.

Engine of 1.6 l 700 - 840
Engine of 1.8 l 740 – 860 (760 – 860 on models with the full drive)
Engine of 2.0 l (AWA) 640 - 800
Engine of 2.0 l (ALT) 700 - 960
L engines 2.4, 3.0 670 - 770

The maximum turns, in the min.

Engine of 1.6 l

6500 - 6800

L engines 1.8, 2.4, 3.0

6800

Engine of 2.0 l

6500

Pressure of fuel, atm

On turns h.kh.

L engines 1.6, 2.0 about 3.5
Engine of 1.8 l about 4.0
L engines 2.4, 3.0 3.2 – 3.8

At shutdown of vacuum

Engines 1.6, 2.0l about 4.0
L engines 2.4, 3.0 3.8 – 4.2

Residual, in 10 min. after switching off of the engine

On the heated-up engine

Engines 1.6, 1.8, 2.0l not less than 2.5
L engines 2.4, 3.0 about 2.2

On the cold engine

L engines 2.4, 3.0 about 3.0

From the preliminary fuel pump (the engine of 2.0 l of AWA)

about 6

From the pump of a high pressure (the engine of 2.0 l of AWA)

On single turns

about 39

Maximum value

about 110

The volume of injection, ml for 30 sec.

Engines 1.6, 2.0 of l (ALT)

95±10

Engine of 1.8 l

135±10

L engines 2.4, 3.0

90 - 125

Resistance of windings of injectors, Ohm at +20 °C (on the heated-up engine increases by 4 – 6 Ohms)

Engine of 1.8 l

12 – 13

L engines 2.4, 3.0

13.5 – 15.5

Sequence of ignition

4-cylinder engines

1-3-4-2

6-cylinder engines

1-4-3-6-2-5

System of injection of the turbodiesel engine

Electronic, microprocessor, EDC15+ on engines of 1.9 l, with direct injection, rotor TNVD on engines of 2.5 l a turbocompressor and cooling of the blown air

Glow plugs

Characteristic

Value

Engine of 2.5 l

Bosch

0250202102

Champion

CH215

Lucas/CAV

HDS342

Pressure of opening of nozzles (engine of 2.5 l), atm

The new

180-190

The used

160

Idling turns, in the min.

Characteristic

Value

Adjustment of number of turns of idling within maintenance is not required.

AVB engine

865±75

AVF engine

875±75

AYM, AKE engines

790±50

The maximum turns without loading

5000±200

Operating procedure of cylinders

4-cylinder engines

1-3-4-2

6-cylinder engines

1-4-3-6-2-5

Pressure of pressurization of a turbocompressor, atm, at rpm

Characteristic

Value

AVB engine

1.9-2.1/3090

AVF engine

2.1-2.6/3000

AYM, AKE engines

1.9-2.1/3000

The content in the fulfilled gases

Value lambda 0.97 – 1.03

Characteristic

Value

Idling

Petrol CO 2 engines, %

14.5 – 16.0

Diesel CO 2 engines, %

9.8 – 10.8

Smoke of the diesel, no more

2.0 (58%)

O 2, %

0.1 – 0.5

WITH in an exhaust pipe, %

max. 0.5

NANOSECOND, ppm

100

The contents WITH on 2500 – 2800 rpm

WITH, %

0.3
Value lambda 0.97 – 1.03

Efforts of a tightening of threaded connections, Nanometer

The moments of a tightening of fixture are given also in the text of the Head and on some illyustratsiyakh*.

* The moments of a tightening highlighted in the text in bold type are subject to exact observance; the efforts which are not highlighted in bold type are given only approximately.

Characteristic

Value

The inlet pipeline to a head of cylinders

L engines 1.6, 2.0

20

L engines 1.8, 2.4, 3.0, 4.2

10

Diesel engines of 1.9 l

25

Diesel engines of 2.5 l

10

Final collector to a head of cylinders

Petrol engines

25

Diesel engines of 1.9 l

25

Diesel engines of 2.5 l

22

Reception pipe to a collector

L engines 1.6, 1.8, 2.0

40

L engines 2.4, 3.0

25

Diesel engines

21

The fuel distributive highway to the inlet pipeline

10

Nozzle clip

Diesel engines of 1.9 l

12nm+270 °

Diesel engines of 2.5 l

30

Cap nut of the pipeline of a nozzle

30

TNVD gear wheel

Diesel engines of 2.5 l

22

Sensor of provision of a cam-shaft

Engine of 1.6 l

13
Lambda probe

L engines 1.6, 1.8, 2.0, 3.0

50

Engines of 2.4 l

55

Detonation sensor

Petrol engines

20











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