Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Fluid controlled mechanical clutch or brake
Patent
1997-03-13
1998-10-13
Ta, Khoi Q.
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Fluid controlled mechanical clutch or brake
475120, 477156, F16H 1550, F16H 6126
Patent
active
058205071
ABSTRACT:
The present invention is directed to methods and systems for improving the operation of a transmission for an automotive vehicle, and in particular the transmission as installed by the original automobile manufacturer. The methods and systems of the present invention modify the original hydraulic fluid circuits of the automotive transmission provided by the automobile manufacturer to enable the transmission to manually select any available ratio at any time, to select first gear at any time, and to enable the transmission to produce quick applies during upshifts and fast releases during downshifts for improved performance and heavy duty use with only minimum ratio sharing or overlap during gear changes. The modification of the original automotive transmission to achieve these goals includes adjustment of the hydraulic fluid circuits by providing a new 1-2 shift valve, by providing a new manual valve, by providing a new 3-4 shift valve, by providing new hydraulic flow circuits, by discontinuing use of existing hydraulic circuits, by enlarging the size of pre-existing orifices and by plugging other orifices, and by adjusting pre-existing spring and pressure values; all of which adjust the fluid flow and operation of the original factory installed automotive transmission in accordance with the basic objectives of the present invention.
REFERENCES:
patent: 5253549 (1993-10-01), Younger
patent: 5540628 (1996-07-01), Younger
patent: 5624342 (1997-04-01), Younger
patent: 5730685 (1998-03-01), Younger
Stone Mark P.
Ta Khoi Q.
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