News Releases

TRW Showcases Integrated Steering and Braking Systems to Deliver Improved Vehicle Dynamic Control and Braking Performance

Jun 15, 2006

PARIS, June 15 /PRNewswire-FirstCall/ -- TRW Automotive Holdings Corp. (NYSE: TRW) today highlighted further systems integration success, demonstrating the integration of TRW's Electrically Powered Steering (EPS) and Electronic Stability Control (ESC) systems to enable an enhanced level of vehicle control and assist drivers across a range of driving conditions.

(Logo: )

The integration of the braking and steering system can deliver braking performance improvements on split coefficient (mu) surfaces -- such as two wheels braking on pavement and two wheels braking on ice -- as well as driver support and comfort through the steering control.

Dr. Alois Seewald, global engineering director of TRW Automotive's systems integration team, explained: "The integration of two active safety systems offers significant benefits not only in terms of vehicle stability and driving safety, but also in ride comfort and total systems costs for the vehicle manufacturer."

A prime example is the Steering Torque Control (STC) function that can help to correct situations such as oversteer in hard cornering or rapid lane change maneuvers. STC functionality is delivered through the integration of TRW's column drive EPS and ESC systems and the creation of integration algorithms to enable the application of steering torque in oversteer and in split mu braking conditions. This is achieved without requiring additional sensors.

STC also offers oversteer control assist. In an oversteer situation, such as a rapid lane change maneuver or hard cornering, the EPS system generates a steering torque, helping to "coach" the driver to the direction of the required steering angle correction.

The generated torque is limited to a level which enables the driver to override the intervention. The driver will feel opposing torque and can choose to bypass the intervention or allow the vehicle to take the corrective measure. These corrections help to stabilize the vehicle and minimize yaw and skidding.

Another feature of STC is enhanced split mu assist. During the split mu braking situation, the braking and steering systems work together to maximize the vehicle stability and driver confidence while the vehicle stops. The EPS system generates steering torque to encourage the driver to counter-steer and respond to vehicle yaw in a controlled fashion. As a result, higher braking pressures can be initiated on the high mu side, providing the potential to reduce stopping distance.

Seewald added: "We have developed this integrated active safety system to deliver tangible comfort and safety benefits. In addition to enhanced comfort and support to the driver through controlled steering intervention, the system improves vehicle stability with fewer ESC interventions. Moreover, the system achieves an improvement of around eight percent in split mu braking performance at 80 kilometers per hour. This is the equivalent of the average length of a vehicle, which could make a difference in real traffic situations."

Steering Torque Control can offer additional features such as side wind compensation, trailer stability control and pull drift compensation to offset road camber. The function can be achieved through software enhancements on TRW's electrically powered steering system or with the addition of a module for hydraulic steering systems.


To see the full complement of TRW active and passive and integrated safety technologies, please visit our website at .

About TRW

With 2005 sales of $12.6 billion, TRW Automotive ranks among the world's leading automotive suppliers. Headquartered in Livonia, Michigan, USA, the Company, through its subsidiaries, employs approximately 63,000 people in 25 countries. TRW Automotive products include integrated vehicle control and driver assist systems, braking systems, steering systems, suspension systems, occupant safety systems (seat belts and airbags), electronics, engine components, fastening systems and aftermarket replacement parts and services.

All references to "TRW Automotive," "TRW" or the "Company" in this press release refer to TRW Automotive Holdings Corp. and its subsidiaries, unless otherwise indicated. TRW Automotive news is available on the Internet at .

Forward Looking Statements

This release contains statements that are not statements of historical fact, but instead are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All forward-looking statements involve risks and uncertainties. Our actual results could differ materially from those contained in forward-looking statements made in this release. Such risks, uncertainties and other important factors which could cause our actual results to differ materially from those contained in our forward-looking statements are set forth in our Report on Form 10-K for the fiscal year ended December 31, 2005 (the "10-K") and the Form 10-Q for the quarter ended March 31, 2006, and include: the possibility that our competitors may develop competing or superior technologies; work stoppages or other labor issues at the facilities of our customers or suppliers; possible production cuts or restructuring by our customers; loss of market share by domestic vehicle manufacturers; efforts by our customers to consolidate their supply base; severe inflationary pressures impacting commodity markets; non- performance by, or insolvency of, our suppliers and customers, which may be exacerbated by recent bankruptcies; escalating pricing pressures from our customers; our dependence on our largest customers; our substantial leverage; interest rate risk arising from our variable rate indebtedness; product liability and warranty and recall claims; limitations on flexibility in operating our business contained in our debt agreements; the possibility that our owners' interests will conflict with ours; and other risks and uncertainties set forth under "Risk Factors" in the 10-K and in our other SEC filings. We do not intend or assume any obligation to update any of these forward-looking statements.

Photo: NewsCom:
AP Archive:
PRN Photo Desk,

SOURCE: TRW Automotive Holdings Corp.

CONTACT: Manley Ford of TRW Automotive, +1-734-855-2616, John Wilkerson
of TRW Automotive/North America, +1-734-855-3864, or Lynette Jackson of TRW
Automotive/Europe, + 44.121.506.5315

Web site:

Email Page Print RSS
email print rss