A Method Of Reducing Output Torque Deficits During Launch Of A Continuously Variable Transmission
AssigneePerkins Engines Company Limited
InventorsMichael Beyer, Steven Spencer
Life of this patent
Estimating the term…
Abstract
According to the present invention, there is provided a method of reducing output torque deficits during the launch of a vehicle having a continuously variable transmission, wherein the variator has an input connected to a prime mover and an output. The method comprises the steps of determining a rate of change of ratio in the transmission, and predicting a required motor speed ratio rate of change value of the variator on the basis of: (i) the determined rate of change of ratio in the transmission, and (ii) the configuration of the transmission. The speed of the variator output is adjusted so as to achieve the required motor speed ratio rate of change value.
Claims6
A method of reducing output torque deficits during the launch of a vehicle having a continuously variable transmission, wherein the variator has an input connected to a prime mover and an output, the method comprising the steps of:
- determining a rate of change of ratio in the transmission;
- predicting a required motor speed ratio rate of change value of the variator on the basis of:
- (i) the determined rate of change of ratio in the transmission, and
- (ii) the configuration of the transmission;
- and
- adjusting the speed of the variator output so as to achieve the required motor speed ratio rate of change value.
Dependencies are inferred from the claim text.