General Motors Co. is investing $246 million in electric motor and electric drive manufacturing for hybrid/electric vehicles. The plan includes constructing an electric drive production facility at GM’s Baltimore Transmission plant, which the company says will make it the first major OEM in the U.S. to produce electric motors.
By controlling design, materials selection and production processes, GM says it can lower costs and improve performance, quality, reliability and manufacturability of the electric motors. However, the company says it will continue to buy some motors from existing external suppliers.
The new internally produced motors will be used in GM’s next-generation rear-drive, two-mode hybrid vehicles, starting with full-sized trucks due in 2013. Applications for rear-drive cars also are expected.
GM says the new system is about 25% smaller but 20% more powerful than the motor used in the current-generation two-mode hybrid.
GM currently offers its two-mode hybrid system, which it co-developed with BMW and the former DaimlerChrysler, in the Chevrolet Tahoe SUV and Silverado pickup. Those vehicles have a U.S. Environmental Protection Agency fuel economy rating of 21 mpg in the city and 22 mpg on the highway.
As the name implies, a two-mode hybrid features two small electric motors instead of one in traditional hybrid-electric architectures. The design optimizes both city and highway mileage, whereas most hybrids focus solely on city driving.
GM says it has been developing electric motor technology for seven years. The new laminated steel system will include copper wire, insulation systems, cooling technology, magnets, precision bearings and mounting.
Of the $246 million being invested, some $105 million comes from a grant last August from the U.S. Department of Energy. In addition to Michigan, GM is expanding electric motor research and development, design and validation capabilities at facilities in Indiana and California.
