Patent ID: 9303760
Filing Date: 2016-04-05
CPC Classification: F16H

Claim Text:
1. A method of shifting a transmission of a vehicle; the method comprising the steps of: initiating a shift from a first gear to a second gear in the transmission; disengaging a first clutch associated with said first gear; engaging a second clutch associated with said second gear; and actively modifying at least one of a pump displacement and a motor displacement while at least one of said disengaging step and said engaging step are being carried out, said motor being drivingly coupled to the transmission; and calculating pump commands and motor commands dependent upon a feedback signal of at least one of a speed of the vehicle, an acceleration of the vehicle and an engine speed, said pump commands and said motor commands being used to respectively change said pump displacement and said motor displacement; wherein said calculating commands step compensates for an increase in vehicle velocity during an up-shift and a decrease in vehicle velocity during a down-shift by altering said pump commands and/or said motor commands.