Method of estimating torque of transmission clutch
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorJin Sung Kim
Life of this patent
Estimating the term…
Abstract
A method of estimating a torque of a transmission clutch may include adjusting an error, deducing an estimated engine angular speed and deducing an estimated clutch torque. The error may be adjusted by deducing an engine transient torque based on an engine angular speed measured using a sensor, an engine static torque deduced using a data map and a load torque depending on a driving load. The estimated engine angular speed may be deduced based on the engine static torque and the engine transient torque. The estimated clutch torque may be deduced by summing an integration value and an error compensation value. The integration value and the error compensation value may be deduced based on a difference between the estimated engine angular speed and the measured engine angular speed.
Claims8
A method of estimating a torque of a transmission clutch, comprising:
- deducing, by a controller, an engine transient torque based on an engine angular speed measured using a sensor, an engine static torque deduced using a data map and a load torque depending on a driving load;
- deducing, by the controller, an estimated engine angular speed based on the engine static torque and the engine transient torque;
- deducing, by the controller, an estimated clutch torque resulted from slipping of the transmission clutch by summing an integration value and an error compensation value, wherein the integration value and the error compensation value are deduced based on a difference between the estimated engine angular speed and the measured engine angular speed;
- and
- controlling, by the controller, the transmission clutch by using the estimated clutch torque.
A method of estimating a torque of a transmission clutch, comprising:
- deducing, by a controller, an engine transient torque corresponding to an engine output torque in a transient state;
- deducing, by the controller, an estimated engine angular speed based on an engine static torque and the engine transient torque;
- deducing, by the controller, an estimated clutch torque resulted from slipping of the transmission clutch by summing an integration value and an error compensation value, wherein the integration value and the error compensation value are deduced based on a difference between the estimated engine angular speed and an engine angular speed measured by a sensor;
- and
- controlling, by the controller, the transmission clutch by using the estimated clutch torque.
Dependencies are inferred from the claim text.