Audi 80/90/Coupe

since 1986-1991 release

Repair and operation of the car



Audi 80/90/Coupe
+ 1.2. Identification of the car
- 2. Engines, carburetors
   2.1.2. Removal and installation of the engine (5-cylinder models)
   2.1.3. Dismantling and assembly of engines
   2.1.4. Head of the block of cylinders, gas distribution mechanism
   + 2.2. Engine electric equipment
   - 2.3. Carburetors
      + 2.3.1.2. Check and adjustment of the carburetor
      - 2.3.2. Keihin carburetors
         2.3.2.2. Adjusting data of Keihin carburetors
3. Lubrication system
+ 4. Cooling system
+ 5. Fuel system
+ 6. Exhaust system
+ 7. System of ignition
+ 8. Transmission
+ 9. Suspension brackets, wheels
+ 10. Brake system
+ 11. Steering
+ 12. Body, salon
+ 13. Air conditioning system
+ 14. Electric equipment






2.3.2. Keihin carburetors

2.3.2.1. General description

GENERAL INFORMATION

Keihin carburetor

1. Cover
2. Needle valve
3. Gate lever
4. Idling mode screw
5. Persistent screw
6. Gate axis
7. Diaphragm starting arrangement
8. Float
9. Pump lever
10. Main air jets
11. Emulsion tubes
12. Jet of the accelerating pump
13. Jet of the holsty course
14. Main fuel jets
15. Electromagnetic valve of the economizer of compulsory idling
16. Mix enrichment screw
17. Accelerating pump
18. Case
19. Pneumatic actuator of a butterfly valve, secondary camera

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

The carburetor with two mixing cameras with the falling stream of Keihin 26-30DC includes: the hand-operated air gate, two cameras with a pneumatic actuator, with the special device on the second camera (automatic locking of the second camera on the cold engine), the accelerating membrane pump set in motion by the core operating on the first camera, the dresser of air-controlled full loading on the first camera, the electrovalve of a cut-off of a chain of turns of idling. Preliminary heating in an inlet branch pipe is provided with an electric heater (0.25±0.50 Ohms) with food via the relay operated by a thermal contact on the engine (short circuit is below 55 °C and disconnection is above 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 to the provision of turns of idling at delay to 1800 rpm. Function is provided with the electronic block which considers the engine mode.