1982-1993 of release
Repair and operation of the car
+ 1.2. Identification of the car
+ 2. Maintenance
- 3. General data
- 3.1. Cars with petrol engines
3.1.1. Masses and transfer numbers
3.1.2. Operational liquids
+ 3.1.3. Changes in a car design from 1984 to 1986.
- 3.1.4. Changes in a car design from 1987 to 1989.
18.104.22.168. OHC engine
+ 22.214.171.124. Dm3 CVH 1,8 engine
+ 126.96.36.199. DOHC engine
+ 188.8.131.52. Service and repair
+ 184.108.40.206. Coupling
220.127.116.11. Mechanical five-speed transmission of N type
+ 18.104.22.168. Mechanical MT 75 five-speed transmission
22.214.171.124. Automatic transmission
126.96.36.199. Forward suspension bracket
- 188.8.131.52. Brake system
184.108.40.206.1. Technical characteristics
220.127.116.11.2. Service and repair
18.104.22.168.3. Adjustment of the emergency brake
22.214.171.124.4. Removal of air from the brake system
126.96.36.199.5. Anti-blocking system
188.8.131.52.6. ABS functioning check
184.108.40.206.7. Hydraulic knot of management
220.127.116.11.8. Sensor of speed of rotation of wheels
+ 18.104.22.168. Electric equipment
22.214.171.124. General data
+ 3.1.5. Changes in a car design from 1990 to February, 1993.
+ 3.2. Cars with diesel engines
+ 4. Engines
+ 5. Coupling
+ 6. Transmissions
+ 7. Driveshaft and back bridge
+ 8. Steering
+ 9. Suspension brackets
+ 10. Brake system
+ 11. Body
+ 12. Electric equipment
Principle of action
Sliding minimum (0%) when the wheel slides freely, and maximum (100%) when the wheel is blocked. Maximum efficiency of braking is reached when sliding makes 15%. This size also allows to keep stability and controllability of the car.
The role of anti-blocking system consists in restriction of pressure created in hydraulic system of brakes so that the size of sliding kept about the optimum size (15%). Action of this system has to be immediate and separate for each wheel. The system has to answer immediately each change of a surface (coupling coefficient) and load of the car.
Four sensors (at each wheel of the car) transmit the signals informing on the speed of rotation of each wheel of the car to the electronic actuation device.
The electronic actuation device located on the right side under the forward panel on the basis of the obtained information on the unequal speed of rotation of separate wheels (or about their zablokirovaniye) transfers in hydraulic knot of control team of reduction of force of braking (pressure given to a brake support) of a wheel which began to experience excessive sliding. The electronic actuation device performs also autodiagnostic function, warning the driver fire of a control bulb about registration of malfunction of electric chains or elements of anti-blocking system. At the faulty ABS system of a brake nevertheless are serviceable and function as if this system is not in the car. Only the control bulb warns the driver that the ABS system does not correct his errors.
The hydraulic knot of management contains the main brake tandem cylinder which operates forward brakes, and the hydraulic auxiliary device which operates back brakes. The hydraulic auxiliary device contains six electromagnetic valves operated by the electronic actuation device, regulating pressure in brakes of separate wheels and consequently also by braking force. Three inlet electromagnetic valves during normal braking are left open (without sliding), and three final valves – closed. They are located in contours of the right forward brake, the left forward brake and back brakes.
Such cycle of braking and free rotation of a wheel occurs very quickly (several times in a second) and proceeds to a stop cars or to a brake pedal otpuskaniye.
The anti-blocking system (ABS) works at a speed of movement more than 7 km/h.