1987-1997 of release
Repair and operation of the car
+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engines
- 4. Fuel system
+ 4.1. Fuel system with the carburetor
+ 4.2. Single-point systems of injection of fuel
- 4.3. Multipoint systems of injection of fuel
4.3.1. Air filter
4.3.2. Accelerator cable
4.3.3. Systems of injection of fuel
4.3.4. Check and adjustment of systems of injection of fuel
4.3.5. Case of a butterfly valve
4.3.6. Elements of system of injection Bosch L3. 1-Jetronic
4.3.7. Elements of system of injection Bosch LU2 Jetronic
4.3.8. Elements of system of injection Bosch Motronic
4.3.9. Elements of system of injection Magnetti Marelli
4.3.10. Inlet collector
4.3.11. System of air supply of ACAV (model with 16 valves)
+ 5. Lubrication systems, coolings
+ 6. System of release
+ 7. Coupling
+ 8. Transmissions
+ 9. Power shafts
+ 10. Steering
+ 11. Suspension brackets
+ 12. Brake system
+ 13. Body
+ 14. Electric equipment
To guarantee optimum efficiency at high frequencies of rotation of the engine and a power maximum at lower frequencies of rotation of the engine, models with 16 valves have an inlet collector with the variable section of a path. The system is called ACAV ("variable acoustic characteristic induction").
The inlet collector is divided to two highways of various length and diameter: a long path (for low power) 650 mm long and with a diameter of 36 mm and a short path (for high power) 370 mm long and with a diameter of 45 mm.
On each end of a casing assembly with a vacuum diaphragm is established. Each diaphragm is connected with an axis of the throttle valve through a pusher. Vacuum diaphragms are connected with electrically the operated electromagnetic valve which is in turn connected with the vacuum pump of the brake system. The pump is installed at an end face of a head of the block of cylinders.
With frequencies of rotation of the engine 1800 revolutions per minute and more than 5080 revolutions per minute of ECU are lower closes the electromagnetic valve, disconnecting vacuum from diaphragms, and throttle valves zakryvytsya. With valves short paths of air supply are closed and the stream of air arrives through a long path.
BLOCK OF ACAV VALVES
The block with a vacuum diaphragm of ACAV
The electromagnetic adjusting valve is installed at the left end face of a head of the block of cylinders.
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