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

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The Volt drive unit combines two motors and three clutches to deliver four distinct operating modes to maximize efficiency and provide a seamless driving experience. Put another way, the GM team wanted to extend the range of the vehicle as efficiently as possible, while maintaining quality driving dynamics and experience.

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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). 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. Click to enlarge.

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Cadillac extended range electric vehicle ELR to be built at Detroit-Hamtramck

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GM will build the Cadillac ELR, a luxury coupe featuring extended-range electric technology, at the Detroit-Hamtramck Assembly, General Motors North America President Mark Reuss said Tuesday. Detroit-Hamtramck is home to the Chevrolet Volt, Opel Ampera, and Holden Volt extended-range electric vehicles.

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GM Defense to develop battery pack prototype for Department of Defense

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GM Defense, a subsidiary of General Motors, was selected by the Department of Defense’s (DoD) Defense Innovation Unit (DIU) to develop a battery pack prototype for testing and analysis on Department of Defense platforms. GM’s HUMMER EV Ultium battery pack. —Steve duMont, president of GM Defense.

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GM To Manufacture Electric Motors; First GM Motors Will Go Into Next-Gen Two-Mode Hybrid in 2013

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An electric traction motor (right) and stator (left) at the GM Powertrain Engineering Development Center Friday, 15 January 2010 in Pontiac, Michigan. Martin for General Motors) Click to enlarge. In the future, electric motors might become as important to GM as engines are now. Photo by John F. —Tom Stephens.

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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

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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. “ GM is tracking to sell more than 50,000 vehicles this year with some form of electrification, Barra said—the majority of which will be eAssist systems.

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GM recalling 656 Cadillac ELR extended range electric vehicles over calibration of Electronic Brake Control Module

Green Car Congress

GM is recalling 656 model year 2014 Cadillac ELR vehicles not equipped with adaptive cruise control and manufactured 26 September 2013 through 14 February 2014, and equipped without Adaptive Cruise Control. NHTSA Campaign Number: 14V-144; GM’s number for this recall is 14087.). The recall is expected to begin on April 17, 2014.