Patent Number: 6,254,509

Title: Engine throttle control for improved shifting

Abstract: A vehicle includes a powershift transmission driven by an electronically controlled engine. A control system momentarily modifies a magnitude of an engine throttle command signal during a shift of the power shift transmission in order to make the shift smoother and less sensitive to achieving optimum clutch engagement pressure. It also prevents an engine governor from over-reacting and causing rough shifts.

Inventors: Meyer; Duane Fredrick (Waterloo, IA)

Assignee: Deere & Company

International Classification: F16H 61/04 (20060101); F16H 59/68 (20060101); F16H 61/06 (20060101); F16H 63/50 (20060101); F16H 61/688 (20060101); F16H 61/68 (20060101); F16H 63/00 (20060101); B60K 041/02 ()

Expiration Date: 07/03/2018