Bosch's Latest ESP System To Debut In The New Renault Mégane
Published: 14th December 2002
Bosch engineers have enhanced the system’s computing performance, allowing for a number of new functions, such as ‘Understeering Control Logic’ (UCL), developed jointly with Renault, which provides additional driving stability in the case of understeer.
ESP helps counteract skidding or ‘breaking away’ (oversteer) by selectively working the ABS braking and Traction Control and also through direct intervention in the engine management system to reduce power. If the vehicle pushes out over the front wheels upon entering a bend at too high a speed, the ESP's integrated anti-traction control will reduce the engine output should the driver keep stepping on the accelerator. If this should not be sufficient, the ESP will brake down the rear wheel on the inside of the bend, allowing the vehicle to turn better into the cornering move.
Similarly, Understeering Control Logic (UCL) in the new Mégane
helps in understeer situations. The new ESP8 with UCL function
can safely decelerate the vehicle whether it is under partial
braking, acceleration or cruising. Depending on the degree
of understeer, this is achieved by reducing engine power and
braking all four wheels.






