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AssigneeFord Global Technologies, LLC
InventorsKenneth Paul Wozniak, Richard Leon Lavigne
Estimating the term…
A shift control and shift strategy for an automatic transmission in an automotive vehicle driveline wherein the automatic ratio shift schedule can be disabled selectively to accommodate a manual ratio shift control. A driver-operated mode selection switch permits the operator to select normal automatic ratio control or a launch-assist mode during operation in the normal ratio shift mode. Ratio changes occur in response to driveline operating variables in a vehicle launch-assist mode. The transmission control system is commanded to effect a high speed ratio when the vehicle is stationary with the brakes applied. The operating mode defaults to a normal ratio shift mode as the operator releases the wheel brakes. In an alternative embodiment of the invention, the control includes multiple enable switches for achieving manual selection of the ratios when a manual upshift sequence is desired.
A method and control strategy for controlling upshifts in the gearing of a multiple-ratio automatic transmission for an automotive vehicle including an electronic controller and clutch and brake means for establishing torque delivery paths from an engine to a torque output shaft, the electronic controller including a manual upshift sequence operating mode having automatic upshift controls responsive to engine and transmission operating variables, the vehicle having traction wheels drivably connected to the torque output shaft, and driver-operated wheel brakes;
A method and control strategy for controlling upshifts in the gearing of a multiple-ratio automatic transmission for an automotive vehicle including an electronic controller and clutch and brake means for establishing torque delivery paths from an engine to a torque output shaft, the electronic controller including automatic upshift controls responsive to engine and transmission operating variables, the vehicle having traction wheels drivably connected to the torque output shaft, and driver-operated wheel brakes;
A method and control strategy for controlling upshifts in the gearing of a multiple-ratio automatic transmission for an automotive vehicle including an electronic controller and clutch and brake means for establishing torque delivery paths from an engine to a torque output shaft, the electronic controller including automatic upshift controls responsive to engine and transmission operating variables, the vehicle having traction wheels drivably connected to the torque output shaft, and driver-operated wheel brakes;
Dependencies are inferred from the claim text.