Torque estimation method for transmission clutch
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorsJin Sung Kim, Seung Sam Baek
Life of this patent
Estimating the term…
Abstract
A method of estimating a torque of a transmission clutch may include correcting an error by deducing an engine transient torque based on an engine angular velocity measured using a sensor, an engine static torque deduced using a data map, and a load torque depending on a driving load, deducing an engine angular velocity estimation value based on the engine static torque and the engine transient torque, and deducing a clutch torque estimation value depending on a slip in the transmission clutch from a difference between the engine angular velocity estimation value and the measured engine angular velocity.
Claims7
A method of estimating a torque of a transmission clutch, comprising:
- correcting, by a controller, an error of the torque by deducing an engine transient torque based on an engine angular velocity 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 engine angular velocity estimation value based on the engine static torque and the engine transient torque;
- deducing, by the controller, a clutch torque estimation value depending on a slip in the transmission clutch from a difference between the engine angular velocity estimation value and the measured engine angular velocity;
- and
- controlling, by the controller, the transmission clutch, using the clutch torque estimation value.
A method of estimating a torque of a transmission clutch, comprising:
- correcting, by a controller, an error of the torque by deducing an engine transient torque corresponding to an engine power torque in a transient state;
- deducing, by the controller, an engine angular velocity estimation value based on an engine static torque and the engine transient torque;
- deducing, by the controller, a clutch torque estimation value depending on a slip in the transmission clutch from a difference between the engine angular velocity estimation value and an engine angular velocity;
- and
- controlling, by the controller, the transmission clutch, using the clutch torque estimation value.
Dependencies are inferred from the claim text.