Abstract: An electric hydraulic pump for a transmission includes: a motor including a motor cover, a motor case coupled with the motor cover, and a stator and a rotor disposed within the motor cover and the motor case; and a pump including a pump case forming a pump chamber, and a gear rotor which is disposed within the pump chamber, connected with the rotor through a motor shaft and receives rotational power of the motor. In particular, a plurality of oil circulation holes are formed in the motor cover and a connecting hole is formed in the motor cover corresponding to the pump case, and an oil flow channel is formed within the pump case for connecting the connecting hole and an oil inlet of the pump chamber.

Abstract: A clutch hydraulic control method and the double clutch transmission system may include performing a clutch pack flow rate control, which pre-fills a flow rate for clutch engage in a clutch pack of a clutch before shifting, when a shifting attempt is detected in a clutch controller.

Abstract: An electric hydraulic pump for a transmission includes: a motor including a motor cover, a motor case coupled with the motor cover, and a stator and a rotor disposed within the motor cover and the motor case; and a pump including a pump case forming a pump chamber, and a gear rotor which is disposed within the pump chamber, connected with the rotor through a motor shaft and receives rotational power of the motor. In particular, a plurality of oil circulation holes are formed in the motor cover and a connecting hole is formed in the motor cover corresponding to the pump case, and an oil flow channel is formed within the pump case for connecting the connecting hole and an oil inlet of the pump chamber.

Abstract: A clutch hydraulic control method and the double clutch transmission system may include performing a clutch pack flow rate control, which pre-fills a flow rate for clutch engage in a clutch pack of a clutch before shifting, when a shifting attempt is detected in a clutch controller.

Abstract: The present disclosure provides a touch point learning apparatus for a clutch including: a clutch plate connected to an input shaft; a clutch disc connected to an output shaft; a hydraulic pressure chamber to which a working hydraulic pressure is applied, wherein the working hydraulic pressure is capable of engaging or disengaging the clutch plate and the clutch disc; and a controller configured to determine the engaging or disengaging of the clutch plate and the clutch disc based on a change in the working hydraulic pressure.

Abstract: A clutch torque control method for a dual clutch transmission (DCT) vehicle may include a shift initiation determining step of determining whether power-on downshift in which a driver steps on an accelerator pedal to change a current shift stage to a lower shift stage is initiated, and a torque correcting step of correcting basic control torque according to torque-stroke (TS) curve characteristics for controlling a disengagement-side clutch within a real shift range in which a number of rotations of an engine is changed with observer torque calculated by a torque observer when the power-on downshift is initiated, and determining the corrected basic control torque into control torque of the disengagement-side clutch.

Abstract: The present disclosure provides a touch point learning apparatus for a clutch including: a clutch plate connected to an input shaft; a clutch disc connected to an output shaft; a hydraulic pressure chamber to which a working hydraulic pressure is applied, wherein the working hydraulic pressure is capable of engaging or disengaging the clutch plate and the clutch disc; and a controller configured to determine the engaging or disengaging of the clutch plate and the clutch disc based on a change in the working hydraulic pressure.

Abstract: A cluster control system of a vehicle may include a cluster controller for controlling a cluster, an engine controller for controlling an engine and supplying an engine revolutions per minute (RPM) to the cluster controller, and a transmission controller for controlling a transmission and supplying a virtual engine RPM according to a shifting type to the cluster controller when a shifting event occurs.

Abstract: The present disclosure relates to a control method of a dual clutch transmission for a vehicle and a control system for the dual clutch.

Abstract: A clutch torque control method for a dual clutch transmission (DCT) vehicle may include a shift initiation determining step of determining whether power-on downshift in which a driver steps on an accelerator pedal to change a current shift stage to a lower shift stage is initiated, and a torque correcting step of correcting basic control torque according to torque-stroke (TS) curve characteristics for controlling a disengagement-side clutch within a real shift range in which a number of rotations of an engine is changed with observer torque calculated by a torque observer when the power-on downshift is initiated, and determining the corrected basic control torque into control torque of the disengagement-side clutch.

Abstract: A method for controlling start of an ISG (idle stop and go) vehicle may include an operation of limiting, when an ISG mode of the vehicle is turned off, an engine torque to less than a preset value for a predetermined time from a point of time at which the IGS mode is turned off.

Abstract: A method of correcting a clutch characteristic of a DCT may include a torque situation determining step that determines whether a torque is applied to any one or both of a first clutch and a second clutch, a slip determining step that determines whether an amount of slip of a clutch receiving the torque is equal to or more than a predetermined reference value, and a correcting step that corrects a T-S curve of the clutch in accordance with situations determined in the torque situation determining step, if the amount of slip of the clutch is equal to or more than the predetermined reference value.

Abstract: A method of correcting clutch characteristics of a vehicle may include determining whether or not a difference in temperature between a surface and a core of a driving clutch exceeds a reference value, and correcting a torque-stroke (T-S) curve if it is determined that the difference in temperature exceeds the reference value. The correcting of the T-S curve may include moving the T-S curve from a currently selected position in a direction in response to a rise in temperature.

Abstract: A cluster control system of a vehicle may include a cluster controller for controlling a cluster, an engine controller for controlling an engine and supplying an engine revolutions per minute (RPM) to the cluster controller, and a transmission controller for controlling a transmission and supplying a virtual engine RPM according to a shifting type to the cluster controller when a shifting event occurs.

Abstract: A clutch torque control method for a dual clutch transmission (DCT) vehicle may include a shift initiation determining step of determining whether power-on downshift in which a driver steps on an accelerator pedal to change a current shift stage to a lower shift stage is initiated, and a torque correcting step of correcting basic control torque according to torque-stroke (TS) curve characteristics for controlling a disengagement-side clutch within a real shift range in which a number of rotations of an engine is changed with observer torque calculated by a torque observer when the power-on downshift is initiated, and determining the corrected basic control torque into control torque of the disengagement-side clutch.

Abstract: A method and system for controlling anti-jerk of a hybrid vehicle reduce shift vibration and shock by reverse phase controlling a drive motor during gear-shifting of a hybrid vehicle without a torque converter. The method includes determining whether a gear-shifting command is outputted from a transmission control unit of the hybrid vehicle; when it is determined that the gear-shifting command is outputted, confirming a gear-shifting range divided into at least three phases in accordance with the gear-shifting command; determining whether the corresponding divided gear-shifting range is an anti-jerk allowed gear-shifting range; and when it is determined that the corresponding gear-shifting range is the anti-jerk allowed gear-shifting range, reverse phase controlling a drive motor of the hybrid vehicle by a predetermined value in order to reduce or attenuate vibration and shock generated in the corresponding gear-shifting range.

Abstract: A method of correcting a clutch characteristic of a DCT may include a torque situation determining step that determines whether a torque is applied to any one or both of a first clutch and a second clutch, a slip determining step that determines whether an amount of slip of a clutch receiving the torque is equal to or more than a predetermined reference value, and a correcting step that corrects a T-S curve of the clutch in accordance with situations determined in the torque situation determining step, if the amount of slip of the clutch is equal to or more than the predetermined reference value.

Abstract: A method of correcting clutch characteristics of a vehicle may include determining whether or not a difference in temperature between a surface and a core of a driving clutch exceeds a reference value, and correcting a torque-stroke (T-S) curve if it is determined that the difference in temperature exceeds the reference value. The correcting of the T-S curve may include moving the T-S curve from a currently selected position in a direction in response to a rise in temperature.

Abstract: Slipping of a clutch can be minimized with a method of controlling the clutch different, depending on the current traveling status of the vehicle, when reaccelerating the vehicle with both clutches open before stopping the vehicle with a dual clutch transmission (DCT). The method can improve the sense of shifting by optimizing the inclination of an engine speed.

Abstract: A method of searching for the touch point of a clutch includes a gear release determination step of determining whether the gear of a non-drive shaft has been released after a change of speed, a clutch operation step of, if the gear has been released, engaging a clutch connected to the non-drive shaft up to a current touch point, and a learning step of determining and learning the propriety of the current touch point depending on changes in the speed of the non-drive shaft after the clutch operation step.