Method and apparatus for improving vehicle fuel economy

Details Method and apparatus for improving vehicle fuel economy Method and apparatus for improving vehicle fuel economy

2006-06-27

2011-10-25

Ciric, Ljiljana (Department: 3785)

Heat exchange

With timer, programmer, time delay, or condition responsive...

Having heating and cooling capability

C165S042000, C165S051000, C165S300000

Reexamination Certificate

active

08042609

ABSTRACT:
The present invention provides an apparatus for improving the fuel economy of a vehicle. The apparatus includes a transmission having a transmission sump that contains transmission fluid, and a heat exchanger disposed within said sump and at least partially submerged in the transmission fluid. The apparatus also includes an engine having a plurality of engine coolant channels. An engine pump is operatively connected to the engine. The engine pump is configured to transfer engine coolant through the plurality of engine coolant channels and then through the heat exchanger. Heat from the engine coolant is transferred to the transmission fluid when the engine coolant passes through the heat exchanger. The heat transferred to the transmission fluid decreases transmission fluid viscosity such that transmission spin losses are reduced and fuel economy is improved. A corresponding method for improving the fuel economy of a vehicle is also provided.

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