Patent ID: 9651144
Date: 2017-05-16
CPC Classifications: F16H,Y10T

Claim:
1. A method of controlling a vehicle, comprising; providing a drive unit and a drive unit controller for controlling the drive unit; providing a transmission, a transmission casing, a transmission controller for controlling the transmission, a hydraulic control system of the transmission, a main pump of the hydraulic control system, and an auxiliary hydraulic pressurization system; externally mounting the auxiliary hydraulic pressurization system to the transmission casing; fluidly coupling the auxiliary hydraulic pressurization system to the hydraulic control system; receiving a stop condition signal indicative of the vehicle being in a stop condition or in a process of stopping condition, wherein the stop condition signal indicates that a velocity of the vehicle is less than one of a stopping velocity and a stopped velocity, and is not greater than either one of the stopping velocity or the stopped velocity; activating the auxiliary hydraulic pressurization system in response to the signal; regulating a hydraulic pressure in the hydraulic control system of the transmission with the activated auxiliary hydraulic pressurization system; disabling the drive unit in response to the regulated hydraulic pressure, where the disabling of the drive unit induces a main pump of the hydraulic control system to stop providing hydraulic pressure to the hydraulic control system; requesting a clutch to be filled with hydraulic pressure from the hydraulic control system; applying at least partially the clutch with hydraulic pressure to substantially lock an output of the transmission; and maintaining the hydraulic pressure in the hydraulic control system at a hold pressure with the auxiliary hydraulic pressurization system; wherein, the auxiliary hydraulic pressurization system is activated only in response to the stop condition signal when the vehicle is in a stop condition or in the process of stopping and is not activated during conditions of the vehicle other than the stop condition or the process of stopping condition.