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US 5,730,685 AGranted
Methods 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 a transmission for an automotive vehicle, and in particular the transmission as installed by the original automobile manufacturer, modify the original hydraulic fluid circuits of the automotive transmission installed by the automobile manufacturer to enable the "factory installed" transmission to hold first gear in the first gear selector position through any rotational speed of the engine. Further modifications to the hydraulic circuitry enable the operator of the vehicle to select fourth gear manually at relatively high vehicle speeds at wide open throttle conditions. Additional modifications to the hydraulic circuitry increase the third clutch capacity at high throttle during a "2-3" shift, and result in firm and more correctly timed shifts. The modifications to the hydraulic circuitry of the "factory installed" transmission provide new valves, block existing hydraulic lines, provide additional connecting hydraulic lines to the existing hydraulic circuitry, increase minimum and maximum main line pressure by changing regulator springs, and enlarge or reduce orifice sizes in the hydraulic circuitry of the "factory installed" transmission to increase or decrease fluid flow.
A method of modifying hydraulic circuitry of an original Automatic Overdrive (AOD) automotive transmission of the type including a manual valve coupled in fluid flow relationship with a release side of an overdrive servo, said method including the step of:
A method of modifying hydraulic circuitry of an original Automatic Overdrive (AOD) transmission of the type including a manual valve, a 1-2 capacity modulator valve, and inner and outer pressure regulator springs;
A method of modifying hydraulic circuitry of an original Automatic Overdrive (AOD) automotive transmission of the type including a 3-4 shift valve coupled in fluid flow relationship to a governor, said method including the step of:
A method of modifying hydraulic circuitry of an original Automatic Overdrive (AOD) automotive transmission of the type including a manual valve, an oil pressure booster valve, and a 2-3 shift valve coupled in fluid flow relationship to said oil pressure booster valve;
Dependencies are inferred from the claim text.