Dana E-Steering Technology Brings Fuel Economy Benefits To Existing Vehicle Designs
Oct 21, 2002
TOLEDO, Ohio, Oct. 21 /PRNewswire/ -- Convergence 2002, Booth # 520 -- Today at the Convergence 2002 transportation electronics conference in Detroit, Dana Corporation (NYSE: DCN) introduced its Electric-Hydrostatic Steering Assist Module (EHSAM), which offers the unique dual benefit of significant fuel economy savings and adaptability to existing vehicle design. (Photo: http://www.newscom.com/cgi-bin/prnh/19990903/DANA ) EHSAM technology, along with the company's Electric Hydraulic Power Steering (EHPS) and Electric Power Steering (EPS) technologies, support e- steering applications and offer greater fuel savings, noise reduction and smaller packaging with less weight. EHSAM: Fuel Economy Benefits Right Now EHSAM combines on-demand electrically powered steering with hydraulic steering gears. The result is better fuel economy than a traditional hydraulic system, since the hydraulic steering pump and its associated parasitic losses are eliminated. On a passenger car, this technology creates a fuel economy improvement of up to 2 percent or more. EHSAM can be remotely mounted, utilizing the existing rack, steering, and suspension geometry, making it ideal for existing vehicle platforms. "EHSAM technology brings fuel economy benefits that our customers can use right now," said Mike Laisure, president of Dana's Engine and Fluid Management Group. "Traditional hydraulic steering features a pump that is always operating, constantly eating up about five horsepower. Other versions of electric power steering also provide on-demand power assist and fuel efficiency, but they require significant changes in the configuration of the steering, suspension or instrument panel geometries, so are better suited to vehicles that are designed for around this technology from the beginning. ESHAM technology, by contrast, can easily be applied to an existing platform design, so more fuel efficiency can be gained on existing vehicles." EHSAM technology provides many of the same benefits as EPS. An EHSAM system includes a steering column torque sensor which measures the amount of force applied to the steering wheel. That information is combined with vehicle speed data to calculate the amount of pressure needed to assist the driver in turning. Information also is shared with other vehicle systems, such as those that control suspension, stability, traction, braking, engine controls, and adaptive cruise control. EHSAM can operate with both 12-volt and 42-volt applications, and is steer-by-wire capable. EHPS: Efficiency, Fuel Economy Savings, Less Space Another of Dana's current e-steer technologies is Electric Hydraulic Power Steering (EHPS), which will be produced by the company's newly announced joint venture with Emerson Electric Co. EHPS technology offers customers many advantages over conventional hydraulic power steering systems, including improved fuel savings and greater efficiency. Its highly integrated package takes up less space, and reduces weight and cost. The EHPS package has been selected by a major OEM for a future light truck model. The EHPS system consists of a hydraulic pump driven by a high-performance brushless DC electric motor, controlled by an integrated electronic control unit. The pump is driven at low speed when minimal steering assistance is required, significantly reducing parasitic energy loss. The electronic control software improves handling and steering characteristics based on a mapping of the optimum degree of assist, enhancing the driveability of the vehicle. EHPS technology can be designed for either 12-volt or 42-volt applications, and, like the EHSAM systems, can be remotely mounted, making it ideal for existing vehicle designs. EPS Motor: Driving EPS Systems Dana's other electric steering development is an Electric Power Steering (EPS) motor, also to be produced by Dana's joint venture with Emerson. Dana's version of EPS uses a permanent magnet brushless DC motor, which allows the smallest package size, the least weight, and the lowest rotor inertia for more responsiveness. The motor is quieter, more reliable and more powerful than other electric motors. With EPS, the hydraulic pump, along with the hoses and hydraulic fluid, are entirely eliminated. Dana's EPS motor is the key component in EPS steering systems that eliminate continuous parasitic losses, reduce emissions and increase fuel economy savings by up to five percent. Dana's range of e-steering technologies means that the customer will be able to choose the best solution for each application. Founded in 1904, Dana Corporation is a global leader in the design, engineering, and manufacture of value-added products and systems for automotive, commercial, and off-highway vehicle manufacturers and their related aftermarkets. The company employs approximately 70,000 people worldwide, all dedicated to achieving innovation through close collaboration with customers. Based in Toledo, Ohio, Dana operates hundreds of technology, manufacturing, and customer service facilities in 34 countries. The company reported sales of $10.3 billion in 2001. Make Your Opinion Count - Click Here http://tbutton.prnewswire.com/prn/11690X43797786 SOURCE Dana Corporation Web site: http: //www.dana.com Photo: http: //www.newscom.com/cgi-bin/prnh/19990903/DANA AP Archive: http://photoarchive.ap.org PRN Photo Desk, 888-776-6555 or 212-782-2840 CONTACT: Jeff Cole of Dana Corporation, +1-419-787-6262, or jeff.cole@dana.com Company News On-Call: http: //www.prnewswire.com/gh/cnoc/comp/226839.html CAPTION: DANA DANA CORPORATION LOGO Dana Corporation logo. (PRNewsFoto)[TC] TOLEDO, OH USA 10/30/2001