Hyundai Elantra

since 2000-2004 of release

Repair and car operation



Elantr's Hyundai
+ Petrol engines 1,6, 1,8 and 2,0 of l
+ Diesel engine of 2,0 l
+ greasing System
+ cooling System
+ Fuel system
+ Monitoring systems and decrease in toxicity of the fulfilled gases
+ ignition System
+ System of preliminary heating of the diesel engine
+ Coupling
+ Mechanical transmission
+ Automatic transmission
+ Power shafts, forward and back axes
+ Suspension bracket
+ Steering
- Brake system
   Specifications
   Check of the vacuum amplifier of brakes
   Check of the unilateral vacuum valve
   Pumping of hydraulic system of a drive of brakes
   Adjustment of a course of the parking brake
   Brake pedal
   Vacuum amplifier of brakes
   Main brake cylinder
   Replacement of forward brake shoes
   Support of a forward brake
   Back disk brakes
   Back drum-type brakes
   Replacement of the working brake cylinder
   Pressure regulator
   Brake tubes and hoses
   Parking brake
   Anti-blocking system of brakes (ABS)
   Hydraulic HECU block
   Sensor of frequency of rotation of a wheel
   Pumping of hydraulic system of a drive of brakes with scanner use
   Search and elimination of malfunctions
+ Body
+ air Central air
+ Electric equipment
Electric circuits



Anti-blocking system of brakes (ABS)

Anti-blocking system of brakes

1–forward brake
2–back brake
3–forward brake disk
4–back brake disk
5–vacuum amplifier of brakes and main brake cylinder
6–brake tube
7–forward brake tube
8–back brake tube

9–brake pedal
10-lever of the parking brake
11-cable of the parking brake
12-ABS (HECU) control unit
13-forward sensor of frequency of rotation of a wheel
14-back sensor of frequency of rotation of a wheel

The anti-blocking system of brakes (ABS) operates pressure in a hydraulic drive of brakes of each wheel separately and reduces pressure of liquid in that wheel brake mechanism which wheel starts to be blocked.

ABS carries out the following functions:

  • Improvement of stability of driving at a detour of obstacles even in the course of braking.
  • Reduction of a brake way at intensive braking at preservation of stability and controllability of the car even when passing turns.

The anti-blocking system of brakes works at information basis from four sensors, transferred to the ABS block. The system operates each wheel separately and reduces pressure of liquid in that wheel brake mechanism which wheel starts to be blocked.

Under normal conditions the standard brake system carries out braking till blocking of the wheel found by the ABS control unit. When the ABS control unit finds wheel blocking, it operates each valve for increase or pressure reduction.

The ABS control unit defines frequency of rotation and norm of delay of each wheel on the basis of information from sensors of frequency of rotation of a wheel. When braking frequency of rotation of a wheel decreases and the ABS block defines a difference between speed of the car and frequency of rotation of a wheel. If delay of some wheels exceeds expected value, the ABS block defines the beginning of blocking and opens the corresponding electromagnetic valves to reduce pressure of brake liquid. Thus frequency of rotation of a wheel increases and the electromagnetic valve of dumping of pressure is closed and there is an increase in pressure of brake liquid in the working brake cylinder of the corresponding wheel.

EBD (Electronic distribution of brake effort)

EBD is in addition applied instead of a pressure regulator ideally to distribute pressure to lobbies and back brakes, for prevention of blocking of back wheels at intensive braking.