Heat exchange – With timer – programmer – time delay – or condition responsive... – Temperature responsive or control
Reexamination Certificate
2005-03-29
2005-03-29
Walberg, Teresa J. (Department: 3742)
Heat exchange
With timer, programmer, time delay, or condition responsive...
Temperature responsive or control
C165S103000
Reexamination Certificate
active
06871703
ABSTRACT:
In a method for controlling the operating temperature of a hydraulic operating medium for a drive unit of a vehicle in a selected range, the operating temperature is controlled by controlling the volume flow of the operating medium for a heat exchange between the operating medium and a secondary heat transfer medium flow medium to a predetermined desired value as a function of the actual value of the operating temperature and as a function of at least one other vehicle parameter, by which a certain temperature influencing effect on the operating medium can be provided. The selected range of the operating temperature includes both the temperature values occurring in the warm-up phase of the drive unit and temperature values, which are substantially higher than the desired value.
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Kemmerer Benjamin
Schaefer Albrecht
Wieland Dittmar
Bach Klaus J.
Daimler-Chrysler AG
Walberg Teresa J.
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