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US 2003/0114262 A1Published application
Method and systems for improving the operation of transmissions for motor vehicles
OwnerGilbert W. Youngerinventor
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OwnerGilbert W. Youngerinventor
Estimating the term…
Methods and systems for improving the operation of transmissions for automotive vehicles increase the main line fluid pressure of a “factory installed” transmission to permit shifting of gears at proper time intervals without undesireable side effects including late or delayed shifts. The hydraulic circuitry of a “factory installed” automotive transmission is also modified to increase the accumulator range to improve the quality of a “1-2” shift, and to extend the useful operating life of the transmission. A seal assembly is provided for reducing, leakage of transmission fluid, and additional modifications to the hydraulic circuitry of the automotive transmission provide a smooth, quick and positive forward clutch apply circuit, and increase the servo-apply pressure to the intermediate and overdrive servos to increase the holding capacity of the second and fourth bands and to adjust the field of the shift.
A method for modifying the hydraulic circuitry of a factory installed TFOD-DSL automotive transmission including a regulator valve, a regulator spring acting on said regulator valve, a throttle valve, a kickdown valve, and a throttle valve spring disposed between said throttle valve and said kickdown valve, the steps of said method including:
A method of modifying the hydraulic circuitry of a factory installed RE4R01A automotive transmission including a 1-2 accumulator, the steps of said method including:
A method of modifying the sealing assembly of a factory installed automotive transmission including a rotatable shaft, a rubber seal element disposed around at least a portion of an outer surface of said shaft, and a pistion adapted to accommodate said seal element, the steps of said method including:
A method of modifying the hydraulic circuitry of a factory installed 4R44E/4R55E automotive transmission including a forward modulator valve disposed between an electronic pressure control (EPC) solenoid and a forward engagement control valve, and a forward clutch in fluid communication with said forward engagement control valve, the steps of said method including:
Dependencies are inferred from the claim text.