1
Michael W Dunkley, John E Stainton: Semi-automatic mechanical transmission control. Eaton Corporation, D A Rowe, H D Gordon, March 10, 1987: US04648290 (139 worldwide citation)

A semi-automatic mechanical transmission system (10) and method for controlling same is provided. The transmission system includes a shaft selector lever (1) which may be moved forward or rearward from the centered position thereof to select upshifts and downshifts, respectively, and a central proce ...


2
Bruce D Lockhart, Dean E McCulloch: Closed loop shift quality control system. General Motors Corporation, Mark A Navarre, February 16, 1988: US04724723 (102 worldwide citation)

The output power of an automotive powertrain including a throttled engine and a stepped ratio transmission is maintained substantially constant during upshifting of the transmission. The powertrain output torque is actively measured during shifting, and the output power of the powertrain is controll ...


3
Yasuhisa Takeuchi, Yoshiro Morimoto, Tadashi Suzuki: Control apparatus and method for engine-continuously variable transmission. Nissan Motor Company, Schwartz Jeffery Schwaab Mack Blumenthal & Koch, May 7, 1985: US04515040 (90 worldwide citation)

A function generator circuit is provided which generates a target engine revolution speed electric signal indicative of a target engine revolution speed which is a first predetermined function of an accelerator pedal stroke electric signal indicative of a depression degree of an accelerator pedal. T ...


4
William J Vukovich, Michael R Grimes: Throttle control system for an automatic shift countershaft transmission. General Motors Corporation, Mark A Navarre, January 15, 1985: US04493228 (89 worldwide citation)

A vehicular control system for automatically shifting a countershaft transmission wherein the power control means is controlled in accordance with a manually operated accelerator pedal and shift requirements. During non-shift modes of operation, the power control means is adjusted in accordance with ...


5
Julian R A Beale: Vehicle power transmission arrangements and electronic power controls. U S Philips Corporation, Frank R Trifari, David R Treacy, August 15, 1978: US04107776 (85 worldwide citation)

An electronically controlled transmission arrangement for an internal combustion engine driven vehicle such as a private automobile, permitting operation under normal conditions close to regions of minimum specific fuel consumption while also permitting bringing an engine in poor operating condition ...


6
Dean L Heino: Automatic electronic control for a power shift transmission. Deere & Company, November 15, 1983: US04414863 (84 worldwide citation)

A controller including a microprocessor for automatically shifting a transmission and selectively locking and unlocking a torque converter connecting the engine with the transmission. The controller has both manual and automatic modes of operation. In the automatic mode, one of three different shift ...


7
Kevin L Brekkestran, John C Thomas: Electronic control system for powershift transmission. J I Case Company, Dykema Gossett, August 8, 1989: US04855913 (74 worldwide citation)

A microprocessor-based electronic control system for a powershift transmission having at least one proportional actuator, such as a solenoid-operated proportional valve, is disclosed. The controller operates a plurality of on-off solenoid valves and the solenoid-operated proportional valve to provid ...


8
Chun Keung Leung: Warm up control for closed loop engine roughness fuel control. The Bendix Corporation, Gaylord P Haas Jr, Russel C Wells, April 15, 1980: US04197767 (73 worldwide citation)

A warm-up control for a closed loop engine roughness control responsive to engine load and engine temperature is disclosed herein. The warm-up control provides a first correction signal to the closed loop engine roughness control operative to increase the effective value of the roughness signal in r ...


9
Kenneth A Dornfeld, Jerry R Marlow, Robert K Sanders: Hydrostatic transmission control. General Motors Corporation, Warren D Hill, April 4, 1978: US04082013 (62 worldwide citation)

An electronic control for a hydrostatic or hydromechanical transmission governs the transmission ratio as a primary function of a manual ratio request and as a secondary function of throttle setting, engine speed, pressure in the hydrostatic transmission and manual range selection. A ratio control s ...


10
Koichi Hayasaki, Kazuhiko Sugano: Downshift timing and engine brake control for automatic transmission. Nissan Motor, Schwartz Jeffery Schwaab Mack Blumenthal & Evans, July 21, 1987: US04680992 (61 worldwide citation)

An electro-hydraulic control for an automatic transmission for an automotive vehicle, comprises a 3-2 timing valve, an overrun clutch control valve, an electromagnetic valve under the control of a computer, and a shuttle valve. The shuttle valve has a spool movable responsive to a line pressure vari ...