Patent ID: 11953069
Assignee: HYUNDAI MOTOR COMPANY
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B | IPC B  F  G

Claim 7:
8. A method of evaluating performance of a vehicle device having a friction component, the method comprising:
determining a rotation speed of the friction component;
determining a hydraulic pressure acting on the friction component;
determining a temperature of the friction component;
predicting and outputting, by a controller, a friction coefficient matching the determined rotation speed, the determined hydraulic pressure, and the determined temperature of the friction component; and
determining an operating torque of the friction component using the output friction coefficient,
wherein the method further includes constructing and outputting a map of friction coefficients determined on a basis of input values including a variation in the rotation speed of the friction component, a variation in the hydraulic pressure acting on the friction component, and a variation in the temperature of the friction component.