초록 ▼

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 fl

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 select first gear at any time, and to enable the transmission to produce quick applies during upshifts and fast releases during downshifts for high performance operation with only minimum ratio sharing or overlap during gear changes. The modification of the original automotive transmission to achieve these goals includes modification of the hydraulic fluid circuits of the factory installed transmission; by enlarging the size of pre-existing orifices and by plugging other orifices; and by adjusting pre-existing spring and pressure values for adjusting the fluid flow and operation of the original factory installed automotive transmission.

대표청구항 ▼

[ I claim:] [1.] A method for modifying hydraulic circuitry of an automotive transmission including a manual valve operatively associated with a "1-2" shift valve; said manual valve being coupled to a gear selector for permitting an operator to select a gear position of said automotive transmission;

[ I claim:] [1.] A method for modifying hydraulic circuitry of an automotive transmission including a manual valve operatively associated with a "1-2" shift valve; said manual valve being coupled to a gear selector for permitting an operator to select a gear position of said automotive transmission; said method comprising the steps of:providing a fluid flow path from said manual valve to a predetermined end of said shift valve for applying a fluid pressure to said predetermined end of said "1-2" shift valve sufficient to maintain said "1-2" shift valve in a downshifted position whenever said gear selector is in a first gear position without regard to the actual speed of a vehicle in which said transmission is installed; andproviding means operatively associated with said fluid flow path between said manual valve and said predetermined end of said "1-2" shift valve for preventing fluid from said "1-2" shift valve from exhausting through said fluid flow path when said gear selector is not in said first gear position.