DCT control method in case of failure of wheel speed sensor
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorYoung Min Yoon
Life of this patent
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Abstract
A dual clutch transmission (DCT) control method for a vehicle mounted with a DCT, which is not provided with an output shaft speed sensor, when a wheel speed sensor has failed, or the information cannot be controlled in a situation where shift gears are not coupled, properly couples the shift gears while preventing a clutch burst, and thus a controller can control DCT by calculating an output shaft speed of DCT.
Claims5
A dual clutch transmission (DCT) control method in case of failure of a wheel speed sensor, comprising:
- a sensor checking step (S10) of checking, by a controller, states of a wheel speed sensor and two input shaft sensors;
- a gear coupling confirming step (S20) of confirming, by the controller, whether shift gears are coupled when the wheel speed sensor has failed and the two input shaft speed sensors are normal as a result of performing the sensor checking step (S10);
- and
- a top stage coupling step (S30) of coupling, by the controller, a top stage shift gear of the DCT using a gear actuator when all shift gears of the DCT are not coupled as result of performing the gear coupling confirming step (S20).
A dual clutch transmission (DCT) control method in case of failure of a wheel speed sensor, comprising:
- when all shift gears of the DCT are not coupled in a situation where output speed of the DCT is not known:
- coupling, by a controller, a top stage shift gear of the corresponding DCT;
- calculating, by the controller, an output speed of the DCT through the top stage shift gear, using a speed of an input shaft to be connected to an output shaft of the DCT;
- and
- controlling, by the controller, a subsequent DCT on a basis of the calculated output speed.
Dependencies are inferred from the claim text.