Buick Reveals New Fuel-Saving Technology
Estimated fuel economy is 26mpg city and 37mpg on the highway (pending EPA certification). Regal with eAssist joins the 2012 LaCrosse as the second Buick to feature the efficiency-enhancing technology.
The system uses a lithium-ion battery system, electric induction motor-generator and regenerative braking capability to improve fuel economy. Its fuel economy tops competitors such as the Acura TSX, rated at 22mpg city and 31mpg highway.
Regalâ€™s estimated 37mpg on the highway is 20 percent greater and the TSX doesnâ€™t offer a six-speed automatic transmission, which is standard on the Buick.
Regal with eAssist goes on sale 2011 fall. It joins an expanding lineup that also includes 2.4L and 2.0L Turbo (with manual transmission) models, as well as the upcoming Regal GS.
Mated to Regalâ€™s 2.4L Ecotec direct injection four-cylinder engine and six-speed automatic transmission, the eAssist system uses power stored in the battery to provide needed electrical boost in various driving scenarios, optimizing engine and transmission operation.
Regal with eAssist technology also features improved underbody aerodynamics and tires optimized for performance and fuel economy. It also features a hill-assist system that captures brake pressure to help the driver more comfortably accelerate from a stop on a moderate or steep grade. It does this by greatly reducing the tendency of the vehicle to roll backward with the engine in shut-down mode.
The eAssist systemâ€™s 115V air-cooled lithium-ion battery bolsters the 2.4L Ecotec four-cylinder engine with approximately 11Kw (15hp) of electric power assist during heavy acceleration and 15Kw of regenerative braking power.
The eAssist systemâ€™s electric induction motor-generator is mounted to the engine in place of the alternator to provide both motor assist and electric-generating functions through an engine belt-drive system. The induction motor-generator is a high-performance, compact induction motor that is liquid-cooled for increased performance and efficiency.
Will the new technology improve overall fuel economy?
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