BMW AG Selects DADS for Engine Valve Train Design.

Coraville, Iowa--(BUSINESS WIRE)--Oct. 30, 1998--CADSI(R) (Computer Aided Design Software, Inc.) today announced that BMW AG in Munich, Germany has implemented DADS, the state-of-the-art design simulation software from CADSI, for analysis of complex dynamic behavior of engine valve trains. A detailed understanding of engine operations, including the dynamic lift of the valves, is required to meet increased demands for efficiency and lower emission levels of internal combustion engines. BMW AG selected DADS because of its support of flexible components, link with controls, and hydraulics.

Joint development efforts between CADSI's mechanical simulation experts and experienced BMW AG engine designers have resulted in a new helical spring element in DADS. This new spring element conveniently combines numerical efficiency and accurate modeling of coil clash and mass effects at high engine speeds. With the assistance of DADS, BMW AG continues to develop innovative engine solutions with shorter development time and reduced costs.

"DADS provides a detailed simulation of valve spring behavior, which helps meet our goal of building the best engines possible," says Dr. Rolf Schlachter, Senior Engineer at BMW AG. "Ongoing technology transfer between CADSI and BMW AG is resulting in the development of intelligent selection of flexible modes to collect the spring parametric data. This user-friendly interface makes it a practical tool for simulation engineers at BMW AG."

"We are very excited that BMW AG has chosen DADS to improve the engine valve train design process," says David Bird, V. P. of Marketing and Business Development. "Joint development projects have resulted in the expanded use of dynamic simulation throughout the complete engine development cycle."

DADS enables engineers at BMW AG to quickly assemble and analyze real-world behavior of dynamic mechanical systems on their desktops. Simulation results are easily viewed as graphs and animation to verify fit, performance, and reliability of product designs before building a single physical prototype.

About CADSI

CADSI develops and markets software tools for Simulation Driven Design. Our software is used worldwide by mechanical engineers to simulate the behavior of mechanical systems, validate and improve designs, reduce costly physical prototyping, and shorten time to market. CADSI provides technical training, hot-line support, and engineering consulting services. For more information visit our web site at www.cadsi.com.

CADSI and DADS are registered trademarks; PolyFEM, CATDADS, CATDADS/Vehicle and Simulation Driven Design are trademarks of Computer Aided Design Software, Inc. All other trademarks and registered trademarks are the property of their respective owners.