Hyundai Motor Company

Kia Motors Corporation

Other

Joung Chul Kim

Young Min Yoon

Ho Young Lee

Sung Hyun Cho

Seung Sam Baek

Byeong Wook Jeon

So Young Lee

Jong Sool Park

Jin Hee Lee

Dong Hoon Jeong

Ju Hyun Nam

June Ho Lee

Hyun Chul Kim

Chang Yeon Cho

Jin Seung Lim

Sung Wook Jang

Joo Hang Lee

Sunghyun Cho

JungWook Lee

Tai Jin Jung

Hyeonjin Kim

Hyun Duk Chang

Woo Jung Kim

Hee Yong Lee

Chi Hun Cho

Kihyup Kim

Gyu Chull Doh

Taegeun Kim

Jaeyeol Yun

Chulwan Park

Kyoo Ho Lee

Yongho Jung

Yun Seok Sung

Seungwan Noh

Won Jun An

Youngho Moon

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.

Electric oil pump for hydraulic control and oil supplying system provided with the same

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.

Touch point learning apparatus and method for clutch

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.

Clutch torque control method for DCT vehicle

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.

Cluster control system of vehicle and method thereof

The present disclosure relates to a control method of a dual clutch transmission for a vehicle and a control system for the dual clutch. The control method includes: a pre-engagement-instructing step in which a synchronizing unit and a sub-gear stage starts to be synchro-meshed; a turn-off intention-determining step that determines whether a driver intends to turn off the neutralizing mode; a gear stage-comparing/determining step that determines whether the sub-gear stage and the main gear stage have been determined to be a same gear stage; a pre-engagement completion-determining step that determines whether the sub-gear stage and the synchronizing unit have been synchro-meshed; a sub-torque-applying step that applies torque to a clutch of a first input shaft on which the sub-gear stage is positioned; and a main torque-applying step in which when the synchronizing unit and the main gear stage are synchro-meshed, torque is applied to a clutch of a second input shaft on which the main gear-stage is positioned and the torque applied to the clutch of the first input shaft is removed.

Control method of dual clutch transmission for vehicle and control system for the same

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.

Clutch characteristic adjusting method for DCT

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.

Method of correcting clutch characteristics of vehicle

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.

Method and system for controlling anti-jerk of hybrid electric vehicle

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.

Control method for vehicle with DCT

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.

Method of searching for touch point of clutch

A method of estimating transmission torque of a dry clutch, may include a) slowly releasing a dry clutch until a slip of the dry clutch occurs, b) acquiring and storing stroke of an actuator and torque of an engine at a starting time point at which the slip of the dry clutch occurs at step a), and c) determining the stroke of the actuator and the transmission torque of the dry clutch at the starting time point at which the slip of the dry clutch occurs, by using the stroke of the actuator and the torque of the engine stored at step b).

Method of estimating transmission torque of dry clutch of vehicle

A method of estimating transmission torque of a vehicle dry clutch may suitably estimate a variation in the characteristics of transmission torque relative to the actuator stroke of a dry clutch even during the driving of a vehicle, so that the dry clutch is more suitably controlled. In the method of estimating transmission torque of a dry clutch, a clutch is released so that a slip of the clutch occurs. If the slip of the clutch has occurred, the slip of the clutch is uniformly maintained. If the slip of the clutch is uniformly maintained, a relationship between a stroke of an actuator of the clutch and transmission torque of the clutch is determined from a relationship between the stroke of the actuator and torque of an engine in the uniformly maintained slip state.

A method of controlling a DCT (double clutch transmission) of a vehicle to conduct a series of downshifting operations from a preceding gear to a subsequent gear via a current gear in response to deceleration of the vehicle may include slip-controlling, continuously, a clutch which has been in an engaged state in the preceding gear, at least until a shift gear of the subsequent gear is engaged, wherein the slip-controlling includes maintaining the engaged state of the clutch with the current gear.

Method of controlling double clutch transmission of vehicle

A method of controlling a double clutch transmission of a vehicle to conduct a series of downshifting operations from a preceding gear to a subsequent gear via a current gear in response to deceleration of the vehicle, may include maintaining a clutch which has been in an engaged state at the preceding gear, in the engaged state until after an order to shift to the subsequent gear may be generated, when shifting from the preceding gear to the current gear, releasing the clutch after the order to shift to the subsequent gear may be generated, and engaging a shift gear of the subsequent gear after the releasing of the clutch.

A method controls a clutch for vehicles. In a vehicle provided with a transmission such as a DCT or AMT which uses a dry clutch as a launch clutch, the clutch is controlled such that clutch control torque can smoothly vary when a driver manipulates an accelerator pedal during creep driving under a control logic so that the controlling of the clutch is converted into launch control, thus preventing the vehicle from jerking and improving the ride comfort of the vehicle, thereby enhancing the merchantability of the vehicle.

Growing community of inventors

Suwon-si, South Korea

Joung Chul Kim