Patent application number | Description | Published |
20140074365 | Shift Control Method for a Vehicle with DCT - A shift control method includes: a step for confirming whether a high rank shift order is made during a take up control; a step for determining whether a difference between rotation number of an input shaft and the rotation number of the engine is within a predetermined reference rotation number when a high rank shift order has been made as a result of the shift order confirming step; and a step for ending the take up control and converting it into a shift control when the difference between rotation numbers of the input shaft and the engine has been within a predetermined reference rotation number as a result of the slip determining step. Even when a high rank shift order is made, the reduction of the shift replying property and shift feeling can be minimized to improve riding feeling and durability of the first and second clutches. | 03-13-2014 |
20140087918 | METHOD OF CONTROLLING CLUTCH OF VEHICLE - 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. | 03-27-2014 |
20140088841 | METHOD OF CONTROLLING TRANSMISSION OF VEHICLE - A method of controlling a transmission of a vehicle with a DCT or AMT in which a reference center point of an actuator for gear shifting with respect to a shift direction can always be maintained at a correct position. Therefore, despite different kinds of electrical disturbances or mechanical vibration or deformation which may be caused when the vehicle is running, reliable gear shifting manipulation ability can always be secured, thus enhancing the merchantability of the vehicle. | 03-27-2014 |
20140102236 | REFERENCE POSITION SETTING METHOD FOR AUTOMATED MANUAL TRANSMISSION - A reference position setting method for an automated manual transmission is allowed to initialize an accurate reference position while minimizing relative movement of a finger, and to reduce noise generated when the finger moves to an end of a shifting direction to secure quieter and faster operation capability. | 04-17-2014 |
20140107899 | REFERENCE POSITION SETTING METHOD FOR AUTOMATED MANUAL TRANSMISSION - A reference position setting method for an automated manual transmission on which actuators driven by motors are mounted without a position sensor for detecting a position of each finger is capable of initializing a reference position of the finger as rapidly and accurately as possible. | 04-17-2014 |
20140107901 | METHOD FOR CONTROLLING SYNCHRONIZATION OF AUTOMATED MANUAL TRANSMISSION - A method for controlling synchronization of an automated manual transmission includes: a step of dividing synchronization section that divides the entire synchronization section where synchronization is performed into a plurality of synchronization sections in accordance with the speed of the synchronization; a step of setting the rate of change of a target number of revolutions that sets the rate of change of a target number of revolutions of an input shaft in accordance with the speed of the synchronization; and a step of synchronization that performs feedback control such that the rate of change of the number of revolutions of the input shaft is synchronized while following the rate of change of a target number of revolutions. | 04-17-2014 |
20140114541 | DCT CONTROL METHOD FOR VEHICLE - The noise caused by the coupling and decoupling of the gear generated when ignition on and off of a dual-clutch mounted vehicle in the P range are switched to each other, and the merchantability of the vehicle can be increased by improving the noise performance of the vehicle by preventing the noise generated by the coupling of the gear as possible from being remarkable in other shift ranges. | 04-24-2014 |
20140121924 | 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. | 05-01-2014 |
20140121925 | CONTROL METHOD FOR VEHICLE WITH DCT - 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. | 05-01-2014 |
20140121926 | METHOD OF ESTIMATING TRANSMISSION TORQUE OF DRY CLUTCH OF VEHICLE - 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). | 05-01-2014 |
20140136064 | TOUCH POINT SEARCHING METHOD FOR CLUTCH - A touch point searching method contributes to improving shift feel and durability of a clutch by making it possible to search and set more accurately a touch point in consideration of drag torque of an input shaft connected with the clutch such that the clutch can be more appropriately controlled. | 05-15-2014 |
20140136065 | METHOD OF SEARCHING FOR TOUCH POINT OF CLUTCH - 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. | 05-15-2014 |
20140136066 | METHOD OF SEARCHING FOR TOUCH POINT OF CLUTCH - A method of searching for a touch point of a clutch may include a reference measurement step of measuring angular acceleration of an input shaft while a gear of a non-drive shaft may be being engaged and disengaged, a clutch operation step of engaging the gear disengaged at the reference measurement step and manipulating a clutch of the input shaft to a currently stored touch point, a target measurement step of measuring angular acceleration of the input shaft while disengaging an engaged gear in a state of maintaining the clutch operated at the clutch operation step, and a learning step of learning and updating the touch point by comparing the angular acceleration of the input shaft measured at the target measurement step with the angular acceleration measured at the reference measurement step. | 05-15-2014 |
20140157933 | METHOD OF SETTING REFERENCE POSITION OF ACTUATOR IN AUTOMATED MANUAL TRANSMISSION - A method of setting a reference position of an actuator in an automated manual transmission, may include acquiring a full stroke by checking both ends in a shifting direction, determining whether or not the full stroke is within a normal range, moving a finger to a position that is half of a previous full stroke when the full stroke acquired at the procedure of acquiring the full stroke exceeds the normal range as a result of determining whether or not the full stroke is within the normal range, and determining whether or not a selection operation is carried out at the position that is half of the full stroke after moving the finger to the position that is half of the previous full stroke. | 06-12-2014 |
20140157934 | Shifting apparatus for vehicle with DCT and control method thereof - An shifting apparatus includes a shift gate pattern allowing manual shifting as well as a shift gate pattern allowing automatic shifting and to implement a manual shift gate pattern substantially at the same level as a vehicle with an MT in the vehicle with a DCT such that a driver can enjoy more dynamic and interesting shifting with maintaining the advantages of convenient automatic shifting, thereby improving the commercial value of the vehicle, and a method thereof. | 06-12-2014 |
20140162846 | CONTROL METHOD FOR VEHICLE WITH DCT - A clutch in a vehicle with DCT having an ISG function is controlled for an engine speed to be decreased rapidly when the engine enters into the ISG so that a ring gear of an engine and a gear of a starter motor are meshed more rapidly when a vehicle restarts, to thereby prevent a response delay when restarting the vehicle. | 06-12-2014 |
20140163828 | METHOD OF SEARCHNG FOR SYNC START IN AUTOMATED MANUAL TRANSMISSION - A method of searching for a sync start in an automated manual transmission includes manual transmission mechanism operated using an actuator. This method can accurately search for a sync start that acts as an important reference for the control in a shift operation so that the sync start can be used for the control of the actuator, which improves shifting response and reduces the chance of a shifting impact occurring, thereby obtaining a high quality of shifting in a reliable fashion. | 06-12-2014 |
20140163829 | METHOD OF SEARCHING FOR SYNC START IN AUTOMATED MANUAL TRANSMISSION - A method of searching for a sync start in an automated manual transmission, may include a slip preparing step of operating, in a parked position, a sleeve and a clutch restrained so as not to rotate into a slip state, an actuator operating step of moving the sleeve toward a clutch gear from a neutral position, a clutch speed determination step of determining whether or not a speed of rotation of the clutch has decreased by the actuator operating step, a stop determination step of determining whether or not a movement of the sleeve that was driven by the actuator operating step has stopped, and a first position determination step of determining a point where the clutch speed determination step determines that the speed of the rotation of the clutch has decreased and the stop determination step determines that the movement of the sleeve has stopped as the sync start. | 06-12-2014 |
20140163830 | SHIFT CONTROL METHOD FOR VEHICLE HAVING DCT - A shift control method for a vehicle having a double clutch transmission may include determining whether or not a speed change may be between transmission gears which may be allocated to a same input shaft, determining whether or not a gear of the input shaft may be released, when the gear of the input shaft may be released, engaging working parts of a clutch of the input shaft with each other in a range before synchronization of a final target transmission gear starts. | 06-12-2014 |
20140188357 | METHOD OF PREDICTING TRANSFER TORQUE OF DRY CLUTCH IN VEHICLE - 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. | 07-03-2014 |
20150025686 | METHOD OF CORRECTING POSITION ERROR OF AMT ACTUATOR - A method of correcting a position error of an AMT (automated manual transmission) actuator may include a stuck determination operation of determining whether a stuck phenomenon occurs, the stuck phenomenon being a phenomenon in which a finger that may be being moved by operation of a shifting actuator in a direction in which gears engage with each other stops without reaching an end position, a section determination operation of, when the stuck phenomenon has occurred, determining whether a position at which the finger stops may be within a resetting determination section based on the end position, and a position resetting operation of, when the stuck phenomenon occurs within the resetting determination section, resetting a position at which the stuck phenomenon occurs as a new end position. | 01-22-2015 |