Audi 80/90/Coupe

since 1986-1991 of release

Repair and car operation

Audi 80/90/Coupe
+ 1.2. Car identification
- 2. Engines, carburetors
   2.1.2. Removal and engine installation (5-cylinder models)
   2.1.3. Dismantling and assembly of engines
   2.1.4. Head of the block of cylinders, gazoraspredeleniye mechanism
   + 2.2. Engine electric equipment
   - 2.3. Carburetors
      + Check and carburetor adjustment
      - 2.3.2. Keihin carburetors Adjusting data of Keihin carburetors
3. Greasing system
+ 4. Cooling system
+ 5. Fuel system
+ 6. Exhaust system
+ 7. Ignition system
+ 8. Transmission
+ 9. Suspension brackets, wheels
+ 10. Brake system
+ 11. Steering
+ 12. Body, salon
+ 13. Central air
+ 14. Electric equipment


2.3.2. Keihin carburetors General description


Keihin carburetor

1. Cover
2. Needle valve
3. Zaslonka lever
4. Screw of a mode of idling
5. Persistent screw
6. Zaslonka axis
7. Diafragmennoye starting arrangement
8. Float
9. Pump lever
10. Main air jets
11. Emulsion tubes
12. Jet of the accelerating pump
13. Jet of a holsty course
14. Main fuel jets
15. Electromagnetic valve of an ekonomayzer of compulsory idling
16. Screw of enrichment of a mix
17. Accelerating pump
18. Case
19. Pneumodrive of a butterfly valve, secondary chamber

Keihin carburetors – for the models equipped with engines 1.6 and 1.8 of liter.

The carburetor with two mixing chambers with a falling stream of Keihin 26-30DC includes: the air hand-operated zaslonka, two chambers with a pneumodrive, with the special device on the second chamber (automatic locking of the second chamber on the cold engine), the accelerating membrane pump actuated by a core, operating on the first chamber, an obogatitel of full air-controlled loading on the first chamber, the electrovalve of an otsechka of a chain of turns of idling. The preliminary heating in an inlet branch pipe is provided with an electric heater (0.25±0.50 Ohm) with a food via the relay operated by thermocontact on the engine (short circuit is lower 55 ° With and disconnection is higher 65 ° C). Besides, the carburetor is supplied with the pneumatic device operated by the electrovalve and intended for a delay of return of a butterfly valve in the provision of turns of idling, at delay to 1800 rpm. Function is provided with the electronic block which considers an engine mode.