- "DWT-B" function improves vehicle dynamics when cornering
- Dynamic control of torque at the rear axle by braking individual wheel
- Future developments will enable comprehensive control of vehicle motion
The automotive industry is working intensively to network existing electronics
systems in vehicles, as a basis for the development of new functions. One of
these systems – Dynamic Wheel Torque Control by Brake (DWT-B) – is set to go
into series production in the BMW X5. It was developed jointly by engineers at
BMW and Bosch. DWT-B improves a vehicle's agility by increasing engine torque
and lightly braking the wheel on the inside of the bend at the back axle when the
vehicle moves into a bend at speed. This increases the engine's motive force on
the wheel on the outside of the bend. As a result, the vehicle is more agile and
can corner more quickly with less steering effort – while maintaining the same
high level of safety. The function is achieved by combining the engine
management system with the high-performance Bosch brake control system
ESP®premium, which is also featured in the X5. All 5-series BMWs with fourwheel
drive have been equipped with DWT-B since spring 2007.
"ESP® is the most significant addition to road safety since the introduction of the
seatbelt," says Dr. Werner Struth, executive vice president of the Chassis
Systems Control division. “More and more frequently, however, the system is also
serving as the starting point for new functions that further improve the driving
dynamics and agility of the vehicle. This gives the driver even better control over
the vehicle.” DWT-B is the latest example of the kind of function that can be
developed by combining ESP® with other vehicle systems that influence driving
behavior. Bosch uses the term Vehicle Dynamics Management (VDM) to describe
all these functions. ESP®premium, the most advanced version of the Bosch
ESP® product family, offers ideal conditions for these functions. It works nearly
noiselessly, and thus very comfortably, and is also extremely fast.
Staying more safely on course – interplay between braking and steering
Two other VDM functions – created by networking braking and steering features –
contribute to improved driving safety. For example, in conjunction with the active
steering made by the Bosch subsidiary ZF Lenksysteme, "Dynamic Steering
Angle Control" (DSA) can stabilize the vehicle at a very early stage by correcting
the steering angle independently as soon as the ESP® detects the onset of a
skidding movement. "Dynamic Steering Torque Control" (DST) makes use of
electrical power steering to vary the steering support provided by the system. In
critical driving situations, this function guides the driver to intuitively choose the
optimum steering movement by reinforcing or diminishing the steering support.
Complete networking is the key
The next goal of Bosch developers is to create a network including all systems
and components relevant to vehicle motion. In the future, "Vehicle Motion
Management (VMM)" will allow common central access to all available sensors
and actuators. The resulting functions will be able to inform, alert, and support the
driver as the situation requires, or even to intervene independently in
emergencies. This will further optimize driving safety, comfort, and agility.
About the Bosch Group
The Bosch Group is a leading global manufacturer of automotive and industrial technology, consumer goods, and building technology. In fiscal 2006, some 260,000 associates generated sales of 43.7 billion euros. Set up in Stuttgart in 1886 by Robert Bosch (1861-1942) as “Workshop for Precision Mechanics and Electrical Engineering,” the Bosch Group today comprises a manufacturing, sales, and after-sales service network of some 300 subsidiaries and more than 13,000 Bosch service centers in over 140 countries.
The special ownership structure of the Bosch Group guarantees its financial independence and entrepreneurial freedom. It makes it possible for the company to undertake significant up-front investments in the safeguarding of its future, as well as to do justice to its social responsibility in a manner reflective of the spirit and will of its founder. A total of 92 % of the share capital of Robert Bosch GmbH is held by the charitable foundation Robert Bosch Stiftung. The entrepreneurial ownership functions are carried out by Robert Bosch Industrietreuhand KG.
About Bosch in China
Bosch founded its first trading office in China as early as 1909. In 1926, the first car service workshop opened in Shanghai. Today, all of the Bosch business sectors are present in China: Automotive and Industrial Technology, Consumer Goods and Building Technology. The company operates via a holding company in Shanghai, 14 subsidiaries, seven joint ventures, and six trading companies. 200 6 consolidated sales in China reached 1 .3 billion euros. Up to 2005, Bosch had invested around 620 million euros in China and between 2006 and 2008 it will invest a further 620 million euros. Bosch employees are committed to bringing to the Chinese customers the latest technology as well as the most reliable services to help improve their quality of life.
About Bosch Chassis Systems Control China
As one of the key divisions of Bosch's automotive technology business, Bosch Chassis Systems Control China started its engineering and sales in China in 2002. This development was followed by the establishment of its new ABS (Anti-lock Braking System) production line in Suzhou and the localized production of ABS in 2003 as well as the localized production of ABS8.0 and ESP®8.0 in Suzhou in 2005. In April 2005 Bosch established its Suzhou Engineering Center to enhance its development and production capabilities in China, speed up its response to market requirements and thus better serve Chinese customers. The Engineering Center has a total area of 200,000 square meters and a total investment of US$ 60 million. In 2006, Bosch established its vehicle verification road (VVR). The VVR is mainly used for road testing and verification of vehicle braking systems. It covers a total area of 36,480 square meters and represents a total investment of Euro 1.8 million. The road is designed and built according to international professional standards. The establishment of VVR distinguishes Bosch as the only automotive supplier to own a professional braking systems verification road in China.
Additional information can be accessed at
http://www.bosch-esperience.com.cn.
For more information on Bosch China, please visit http://www.bosch.com.cn
For further details please contact:
News sourc: Bosch China
Publish date: Oct. 2007
|
简体中文
Web Assistant
Contact
Dealer
My Bosch
Start Bosch.com.cn 
Top of page