Lubrication – Systems – With lubricant treatment means
Patent
1998-11-19
2000-07-25
Fenstermacher, David M.
Lubrication
Systems
With lubricant treatment means
1841041, 74606A, F01M 906
Patent
active
060926287
ABSTRACT:
An apparatus for controlling temperature of fluid in a differential assembly. The apparatus includes a differential housing having a number of sidewalls which collectively define an internal component chamber, wherein (i) the internal component chamber has a differential sump located therein, and (ii) the differential sump has a sump input port defined therein. The apparatus also includes a first operational pressure source which advances fluid from the internal component chamber of the differential housing. The apparatus further includes a diverter valve which receives fluid advanced by the first operational pressure source from the internal component chamber. The diverter valve has a cold fluid output port and a hot fluid output port. A heating fluid return line is interposed between the cold fluid output port of the diverter valve and the sump input port of the differential sump. A cooling fluid return line is interposed between the hot fluid output port of the diverter valve and the housing input port of the differential housing. The diverter valve is selectively operable between (i) a heating position in which fluid advanced by the first operational fluid source is diverted to the differential sump of the differential housing via the heating fluid return line and (ii) a cooling position in which fluid advanced by the first operational fluid source is diverted to contact the number of sidewalls of the differential housing via the cooling fluid return line. A method of controlling temperature of fluid in a differential housing is also presented.
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Bell Douglas W.
Goloff Charles N.
Hinton David
Caterpillar Inc.
Fenstermacher David M.
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