Method of predicting transfer torque of dry clutch in vehicle
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorYoung Min Yoon
Life of this patent
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Abstract
A method predicts transfer torque of a dry clutch in a vehicle, in which a characteristic of transfer torque of the dry clutch caused by a stroke of a clutch actuator is accurately detected in a process of detecting a characteristic of a transmission when the vehicle is finished in an assembly line, and is applied to the control of the dry clutch using the clutch actuator, thereby previously preventing a phenomenon in which an excessive slip and an impact occur at the dry clutch and thus improving shift performance, for instance, securing durability of the dry clutch, or obtaining smooth shift feeling.
Claims4
A method of predicting transfer torque of a dry clutch in a vehicle, comprising:
- a first preparing process (S10) of operating a brake by a worker after an engine is started;
- a first driving process (S20) of driving an actuator by a controller to engage a clutch that has been disengaged;
- and
- a first predicting process (S30) of measuring, by the controller, a stroke of the actuator and a resulting engine torque during performing of the first driving process (S20) and storing, by the controller, a measured torque as clutch transfer torque based on the stroke of the actuator,
- wherein the first driving process (S20) and the first predicting process (S30) are performed when the engine is in an idle state, and
- wherein the first driving process (S20) includes a maintenance period in which the stroke of the actuator is maintained with no change while the actuator is driven to engage the clutch and then to disengage the clutch.
Dependencies are inferred from the claim text.