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General Motors Develops Two-Mode Hybrid Powertrain using Model-Based Design

General Motors have used The MathWorks Model-Based Design tools to develop its Two-Mode Hybrid powertrain control system. Part of GM’s hybrid program, the new powertrain has been designed to meet driving patterns and needs, and to optimise fuel efficiency in both city and highway driving.
  • 04 November, 2009 15:29

<p>General Motors Develops Two-Mode Hybrid Powertrain using Model-Based Design -
Reduces development time by 24 months</p>
<p>SYDNEY, Australia. – November 4, 2009 - The MathWorks today announced that General Motors Company (GM) has developed its Two-Mode Hybrid power¬train control system using The MathWorks tools for Model-Based Design. Using math and simulation-based software tools, including MATLAB and Simulink, GM designed the powertrain prototype within 9 months, shaving 24 months off the expected development time. The complex control system is currently in production in the GMC Sierra Hybrid, GMC Yukon Hybrid, Chevy Tahoe Hybrid, Chevy Silverado Hybrid, and Cadillac Escalade Hybrid vehicles.</p>
<p>The Two-Mode Hybrid powertrain is part of GM’s diverse hybrid program, with multiple hybrid and electric vehicle technologies designed to meet diverse driving patterns and needs. Created to optimise fuel efficiency in both city and highway driving, the Two-Mode Hybrid powertrain combines a conventional engine with two 60-kW electric motors integrated into an automatic trans¬mission, and it integrates with new components such as battery and power electronics.</p>
<p>GM adopted Model-Based Design using math and simulation-based tools to allow engineers, with diverse engineering backgrounds, to collaborate better. By using MATLAB and Simulink, GM engineers could now work in a single environment to mathematically model the behavior of the Two-Mode Hybrid powertrain, design the software and verify its behavior, and simulate the entire system model to accurately predict and optimise performance. This helped the global development team communicate requirements and design changes and address errors earlier in the design process, saving valuable time and resources.</p>
<p>“Our corporate philosophy is to move to improve fuel economy and reduce emissions as a way to developing sustainable transportation,” said Larry Nitz, GM executive director of hybrid and electric powertrains. “Model-Based Design allowed us to visualise the powertrain, which helped us design smarter and integrate the powertrain, a critical part of our hybrid roadmap, into our vehicles faster.” GM is an industry leader in the integration of control systems and has hundreds of employees dedicated to in-house powertrain controls development.</p>
<p>“GM has been at the forefront of entering the hybrid vehicles market to offer consumers the latest and most fuel efficient vehicle options and to ensure its vehicles and manufacturing facilities have a positive impact on the environment,” said Andrew Clay, Managing Director at The MathWorks Australia. “It’s exciting to see how GM is applying Model-Based Design to create next generation hybrid technologies, helping meet its commitment to continually improve the fuel economy of its vehicles.”</p>
<p>About General Motors
General Motors, one of the world’s largest automakers, traces its roots back to 1908. With its global headquarters in Detroit, GM employs 219,000 people in every major region of the world and does business in some 140 countries. GM and its strategic partners produce cars and trucks in 34 countries, and sell and service these vehicles through the following brands: Buick, Cadillac, Chevrolet, GMC, GM Daewoo, Holden, Opel, Vauxhall and Wuling. GM’s largest national market is the United States, followed by China, Brazil, the United Kingdom, Canada, Russia and Germany. GM’s OnStar subsidiary is the industry leader in vehicle safety, security and information services. General Motors Company acquired operations from General Motors Corporation on July 10, 2009, and references to prior periods in this and other press materials refer to operations of the old General Motors Corporation. More information on the new General Motors Company can be found at</p>
<p>About The MathWorks
The MathWorks is the leading developer of mathematical computing software. MATLAB, the language of technical computing, is a programming environment for algorithm development, data analysis, visualisation, and numeric computation. Simulink is a graphical environment for simulation and Model-Based Design of multidomain dynamic and embedded systems. Engineers and scientists worldwide rely on these product families to accelerate the pace of discovery, innovation, and development in automotive, aerospace, electronics, financial services, biotech-pharmaceutical, and other industries. MathWorks products are also fundamental teaching and research tools in the world’s universities and learning institutions.</p>
<p>Founded in 1984, The MathWorks employs more than 2,100 people in 15 countries, with headquarters in Natick, Massachusetts, USA. For additional information, visit</p>
<p>MATLAB and Simulink are registered trademarks of The MathWorks, Inc. See for a list of additional trademarks. Other product or brand names may be trademarks or registered trademarks of their respective holders.</p>

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