Contents: ABS with trajectory stabilization…🠛 The principle of operation of ABS…🠛 Peculiarities of the trajectory…🠛 Hydraulic unit 🠛
The car is equipped with ABS BOSCH 8.0.
Depending on the vehicle's equipment level, the BOSCH 8.0 system includes only ABS brakes or ABS combined with the electronic stability control (ESC).
Note: After performing any work on the electronic stability control system, it is essential to verify the repair results by road testing and checking with a diagnostic tool ("CLIP").
ABS with trajectory stabilization system
The ABS system - trajectory stabilization consists of:
- vacuum brake booster assembly with master brake cylinder;
- electric pump unit, including a hydraulic pump and a pressure control unit (12 electromagnetic valves);
- ABS ECU;
- pressure sensor;
- steering wheel angle sensor integrated into the electric power steering;
- combined angular and lateral acceleration sensor;
- four wheel speed sensors;
- trajectory stabilization system switch.
The principle of operation of ABS with the trajectory stabilization system
Optimal parameters are calculated continuously based on measurements of wheel speed and steering angle. Optimal parameters reflect the optimal behavior of the car on the road.
The optimal parameters are compared with the actual vehicle motion parameters based on measurements of angular and lateral acceleration.
When a deviation of the actual trajectory from the optimal one is detected, the corresponding wheel is braked. In some cases, when control is insufficient, the system brakes both wheels simultaneously. The torque created in this way returns the car to the optimal trajectory.
In some cases the system (when the anti-skid function is operating) changes the engine torque.
Peculiarities of the trajectory stabilization system
The SST function can be switched off using the switch located on the instrument panel.
The system cannot be switched off if the speed exceeds the threshold of 50 km/h.
(You can find the original at this link RenaultBook.ru)
The system is automatically reactivated when the ignition is turned on or if the speed exceeds 50 km/h.
Hydraulic unit
The ABS electric pump unit is equipped with an ECU with a 26-pin connector.
The electric pump unit of the trajectory stabilization system and ABS is equipped with an ECU with a 46-pin connector.
Note: The ECU is built into the electric pump unit.