Electronic Stability Programme

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  • Topic: Anti-lock braking system, Electronic stability control, Traction control system
  • Pages : 62 (11647 words )
  • Download(s) : 99
  • Published : December 20, 2010
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Service.

ESP
Electronic Stability Programme Design and function

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ESP is the abbreviation for “Electronic stability programme”. The system's task is to assist the driver in demanding driving situations, e.g. if a wild animal suddenly runs across path of vehicle, and also to compensate for overreaction on the part of the driver and to prevent loss of vehicle stability. However, ESP is not intended for speed manics to try and defy the laws of physics.

A responsible driving style adapted to the prevailing road and traffic conditions is therefore still essential. In the course of this booklet, we will explain how ESP is based on the proven anti-lock braking system (ABS) and its related systems - TCS, EDL, EBD and EBC - and we will describe the various versions of ESP which we use in our vehicles.

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Important Note

The Self-Study Programme is not a Workshop Manual.

Please always refer to the relevant Service Literature for all inspection, adjustment and repair instructions.

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Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Basic physical principles. . . . . . . . . . . . . . . . . . . . . . . . 7

Driving dynamic control . . . . . . . . . . . . . . . . . . . . . . . 9

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

BOSCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 System overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Design and function of ESP . . . . . . . . . . . . . . . . . . . . . 16 Functional diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Self-diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

ITT Automotive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 System overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Design and function of ESP . . . . . . . . . . . . . . . . . . . . . 38 Functional diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Self-diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

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Introduction
Retrospective
Ongoing technical advances in the motor vehicle industry have seen vehicles with increasing performance and power output come onto the market. Even in the early days, designers were confronted with the question of how to keep this technology manageable for the average driver. In other words: What systems would be required to ensure maximum braking safety and assist the driver? Purely mechanical precursors to the modern-day anti-lock braking system were first conceived as long ago as the 1920s and 1940s. However, these systems were not suited to the task in hand because they were too slow. The electronics revolution in the 1960s made antilock braking systems feasible. Such systems have become more and more efficient with the further development of digital technology. Today, we regard not only ABS, but also systems such as EDL, EBD, TCS and EBC, as everyday technology. Today’s state of the art is reflected in ESP, which is now ready for production. However, our engineers are already thinking one step further.

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What does ESP do?
The electronic stability programme is one of the vehicle's active safety features. It is also known as a "driving dynamic control system". Expressed in simple terms, ESP is an anti-skid programme. It recognises when the vehicle is in danger of skidding and compensates when the vehicle breaks out.

Plus-points: - ESP is not an independent system. In fact it is based on other traction control systems. That is why it also includes the performance features of these systems. - It relieves the burden on the driver. - The vehicle remains manageable. - It reduces the accident risk if the driver...
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