Air/oil level control for transmission lubrication

Details Air/oil level control for transmission lubrication Air/oil level control for transmission lubrication

1989-07-03

1990-04-10

Dority, Carroll B.

Lubrication

Systems

Gearing

74467, F01M 910

Patent

active

049151932

ABSTRACT:
The oil level is controlled between the main gear shift chamber of a transmission and the final reduction gearing/differential chamber by pumping air from the differential chamber into the main gear chamber. The increased air pressure then forces oil back into the differential chamber. The air pump preferably is a simple piston pump driven by a cam on one of the drive shafts on the main transmission chamber. An oil film is provided in the passage connecting the main transmission chamber to allow flow of oil between those chambers, while preventing the flow of air.

REFERENCES:
patent: 4529061 (1985-07-01), Glasrud et al.

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