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GM and U Mich receive patent on plug-in series hybrid/extended range electric vehicle powertrain using multiple free piston linear alternator engines

Green Car Congress

The GM/U Mich patent envisages using multiple free-piston engines (240A through 240D in the patent drawing). Click to enlarge. The powertrain system—the patent application for which was filed in 2009—includes an electrical energy storage system—such as a Li-ion battery pack—and an electric traction motor.

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Chevy Volt Delivers Novel Two-Motor, Four-Mode Extended Range Electric Drive System; Seamless Driver Experience Plus Efficiency

Green Car Congress

During the serial media launch events for the Chevrolet Volt, GM provided more detail (subsequent to the completion of related patent work) on the novel drive architecture applied in their first extended range electric vehicle to enhance the efficiency of both the battery electric and extended-range driving modes.

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GM and Nissan lead in US plug-in sales in December; GM and Toyota for the year

Green Car Congress

2012 US sales of plug-in vehicles by major OEMs. GM was the US sales leader among the major OEMs for plug-in vehicles in December, and for 2012. GM sold 2,633 units of the Volt extended range electric vehicle in December, up 72.2% For the year, GM posted sales of 23,461 Volts, up 205.8%

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GM will focus its electrification strategy on light electrification, extended range, and battery-electric vehicle technologies; major focus on the plug; preview of the Spark EV

Green Car Congress

GM will focus its vehicle electrification strategy on eAssist-type systems and the plug. Source: Larry Nitz, GM. That’s not how GM is doing business today, ” she said. “ From January through October, Barra said, GM had sold more than 26,000 vehicles equipped with eAssist. Click to enlarge. —Mary Barra.

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GM and Toyota plug-in hybrids again lead plug-in sales from major OEMs in September

Green Car Congress

In September, GM’s plug-in hybrid Chevrolet Volt (2,851 units sold) and Toyota’s plug-in hybrid Prius PHV (1,652 units sold) continued to lead sales in the US of plug-in vehicles from major OEMs. The Volt extended range electric vehicle has sold 16,348 units Jan-Sep 2012, up 319.7% in September year-on-year.

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GM Unveils Chevrolet Volt MPV5 Electric Crossover Concept at Auto China 2010; Showing Cadillac Converj, XTS Platinum Plug-in Hybrid

Green Car Congress

GM’s Chevrolet unveiled the Volt MPV5 extended range electric vehicle concept at Auto China 2010. The five-passenger multi-purpose crossover concept demonstrates the potential of the Voltec propulsion system by utilizing the same extended range electric drive foundation as the Volt. Electrification in China.

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GMs views on challenges for battery development for extended range electric vehicles

Green Car Congress

Source: Roland Matthé, GM. Roland Matthé, GM technical manager for the Voltec battery system, provided an overview of GM’s views on the requirements and challenges for batteries specifically for extended range electric vehicles—i.e., Key metrics of electrified propulsion systems (GM).