Transmission

Details Transmission Transmission

2007-04-26

2009-12-29

Estremsky, Sherry (Department: 3655)

Planetary gear transmission systems or components

With lubricaton

C184S006100

Reexamination Certificate

active

07637834

ABSTRACT:
To provide a transmission capable of: reducing horsepower loss by reducing the amount of lubricating oil for a power transmission system including speed gears when the present speed gear is a specified gear of the speed gears; and securing the lubricating oil amount for the transmission system during a shift performed when the present gear is the specified speed gear. The transmission includes: the power transmission system; a lubricating oil amount reducing mechanism for reducing the lubricating oil amount supplied to the power transmission system when the present gear is the specified speed gear; and controller for determining a shift point vehicle speed pertaining to the specified speed gear based on a preset shift map, and activating the oil amount reducing mechanism, when a difference between the shift point vehicle speed and actual vehicle speed exceeds a first predetermined value and while the specified speed gear is the present gear.

REFERENCES:
patent: 5086877 (1992-02-01), Synatschke et al.
patent: 5478292 (1995-12-01), Sato et al.
patent: 6068569 (2000-05-01), Redinger et al.
patent: 6350215 (2002-02-01), Gierling
patent: 2005/0263352 (2005-12-01), Fideler et al.
patent: 10-141480 (1998-05-01), None

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