System and method for adjusting engine speed and/or engine load to improve fuel economy without causing vehicle vibration that is perceivable by a vehicle occupant
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United States of America Patent
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Mar 15, 2016
Grant Date -
Jul 2, 2015
app pub date -
Dec 30, 2013
filing date -
Dec 30, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A system according to the principles of the present disclosure includes a vibration level module and an engine operation control module. The vibration level module estimates a first level of vibration in a vehicle due to contact between tires of the vehicle and a road surface as the vehicle travels over the road surface. The vibration level module estimates a second level of vibration in the vehicle due to an engine in the vehicle. The engine operation control module selectively adjusts at least one of a speed of the engine and a load on the engine when the second vibration level is less than the first vibration level.
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