Patent application number | Description | Published |
20090111650 | METHOD FOR COMPENSATING HYDRAULIC PRESSURE OF AUTOMATIC TRANSMISSION - Faster shifting operation and reduced shift shock in response to a braking operation during a lift-Foot-up shifting may be achieved when an automatic transmission is controlled by a method for compensating a hydraulic pressure that includes: determining whether a lift-foot-up shifting of the automatic transmission is under control; calculating a vehicle speed of a vehicle; calculating a deceleration rate of the vehicle; calculating a compensation hydraulic pressure to be applied to a friction member of the transmission, based on the deceleration rate; calculating a on-coming pressure based on the calculated compensation hydraulic pressure, and applying the calculated on-coming pressure to the friction member. | 04-30-2009 |
20090131220 | SHIFT CONTROL METHOD OF AUTOMATIC TRANSMISSION - A shift control method of an automatic transmission according to this invention controls a shift from an N speed achieved by engagement of first and second frictional elements to an N-3 speed achieved by engagement of third and fourth frictional elements, wherein release of the second frictional element begins after release of the first frictional element begins and engagement of the fourth frictional element begins after engagement of the third frictional element begins, and wherein the engagement of the third frictional element is completed substantially at the same time that the release of the second frictional element is completed. | 05-21-2009 |
20090131221 | SHIFT CONTROL METHOD OF AUTOMATIC TRANSMISSION - A shift control method of an automatic transmission according to an exemplary embodiment of the present invention may control a shift from an N speed achieved by engagement of first and second frictional elements to an N−3 speed achieved by engagement of third and fourth frictional elements, wherein release of the second frictional element is completed after release of the first frictional element begins, and engagement of the fourth frictional element begins after engagement of the third frictional element begins, wherein the engagement of the third frictional element is completed after the release of the second frictional element is completed. | 05-21-2009 |
20090156357 | METHOD AND SYSTEM FOR RELEASING HYDRAULIC PRESSURE OF AUTOMATIC TRANSMISSION - The present invention relates to a method and a system for releasing hydraulic pressure of an automatic transmission that improve shift responsiveness and stability of hydraulic pressure control as a consequence of quickly supplying to a pressure control valve as feedback pressure a part of operating pressure that is supplied from the pressure control valve to an off-going element in a case of releasing the off-going element. The method for releasing hydraulic pressure of an automatic transmission according to an exemplary embodiment of the present invention may include: determining whether a shift signal is detected; calculating a delay time T | 06-18-2009 |
20100137101 | Shift Control Method and System of Automatic Transmission - A shift control method of an automatic transmission controls a skip shift from a first shift-speed achieved by engagements of first and second frictional elements to a second shift-speed achieved by engagements of third and fourth frictional elements, wherein the engagements of the third and fourth frictional elements is controlled after completion of releases of the first and second frictional elements. | 06-03-2010 |
20120312109 | 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. | 12-13-2012 |
20120312110 | METHOD OF CONTROLLING DOUBLE CLUTCH TRANSMISSION OF VEHICLE - 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. | 12-13-2012 |
20120318626 | SHIFT CONTROL METHOD OF AUTOMATIC TRANSMISSION - A shift control method of an automatic transmission may include detecting an end point of an inertia section during upshifting, momentarily reducing a hydraulic pressure applied to engagement side frictional elements at the detected end point of the inertia section, increasing the reduced hydraulic pressure with a predetermined gradient until reaching a synchronization point, and momentarily increasing the hydraulic pressure when the synchronization point may be reached. | 12-20-2012 |
20120323831 | METHOD FOR STORING DATA IN MEMORY - A method for storing data in a memory may include when the data may be obtained under a variable condition, determining a cell corresponding to an area of the variable condition from an entire memory area, storing the data in the cell and dividing the cell storing the data into a plurality of cells, and whenever a new data may be obtained under a new variable condition, determining a new cell corresponding to an area of the new variable condition under which the new data may be obtained, from the plurality of cells of the entire memory area and repeating storing of the new data and dividing of the new cell. | 12-20-2012 |
20140081540 | METHOD OF CONTROLLING TRANSMISSION AND TRANSMISSION SYSTEM FOR PERFORMING THE SAME - A method of controlling a transmission includes sensing an operation signal generated from an accelerator pedal sensor, performing a predetermined transmission in a predetermined transmission section from a current gear to a target gear, determining a change in the speed of the operation signal, controlling a constant value at which a release hydraulic pressure signal is maintained constant during the transmission in response to the change, controlling an increase slope of an engagement hydraulic pressure signal before the transmission is completed in response to the change, and controlling a decrease slope of the release hydraulic pressure signal before the transmission is completed in response to the change. A transmission system for performing a method of controlling a transmission is also provided. | 03-20-2014 |
20140088789 | EVALUATION METHOD FOR A SHIFT FEELING OF A VEHICLE - An evaluation method for a shift feeling of a vehicle, through which the shift feeling during a kick down operation of a driver is deduced as objectively quantitative value, it may be applied to a proper shift control corresponding to an expectancy of a driver based on the quantitative value. | 03-27-2014 |
20140123806 | DOUBLE CLUTCH POWERTRAIN FOR VEHICLE - A double clutch powertrain for a vehicle makes smooth starting of the vehicle and smooth gear shifting possible despite using a dry type double clutch and makes regenerative braking and power generation possible when the vehicle decelerates, thus improving the driving characteristics of the vehicle, and enhancing the fuel efficiency of the vehicle. | 05-08-2014 |
20140277972 | SYSTEM AND METHOD OF DETERMINING LONG TERM DRIVING TENDENCY OF DRIVER - A system and a method of determining a long term driving tendency of a driver may include a data detector detecting data for determining the long term driving tendency and a short term driving tendency of the driver; and a controller determining the short term driving tendency and the long term driving tendency of the driver based on the data received from the data detector, and controlling an engine or a transmission according to the short term driving tendency of the driver or the long term driving tendency of the driver, wherein the controller continuously determines the short term driving tendency of the driver for a predetermined time and determines the long term driving tendency of the driver from a predetermined number (n) of short term driving tendencies of the driver. | 09-18-2014 |
20140297140 | SYSTEM AND METHOD OF CONTROLLING SHIFTING FOR VEHICLE - A system and a method of controlling shifting for a vehicle includes a data detector detecting data for a shift control, a road condition determiner determining a road condition based on the data, a short term driving tendency determiner determining a short term driving tendency of a driver based on the data, and a long term driving tendency determiner determining a long term driving tendency of the driver based on the short term driving tendency of the driver. An optimal driving mode determiner determines an optimal driving mode based on the road condition, the short term driving tendency of the driver, and the long term driving tendency of the driver, wherein the system controls shifting according to the optimal driving mode determined by the optimal driving mode determiner. | 10-02-2014 |
20140358323 | APPARATUS AND METHOD FOR DETERMINING SHORT-TERM DRIVING TENDENCY OF DRIVER - An apparatus for determining a short-term driving tendency of a driver according to the present invention includes a data detector configured to detect a vehicle speed and an inter-vehicle distance, and a controller configured to determine the short-term driving tendency of the driver on the basis of the vehicle speed and the inter-vehicle distance. The controller extracts fuzzy result values with respect to the vehicle speed and the inter-vehicle distance by setting a membership function that corresponds to each of the vehicle speed and the inter-vehicle distance, and determines the short-term driving tendency using the fuzzy result values. | 12-04-2014 |
20140358384 | SYSTEM AND METHOD OF CONTROLLING SHIFT FOR VEHICLE - A system may include: a data detector detecting data for a shift control; and a controller determining a short term driving tendency index and a long term driving tendency index of a driver based on the data, and controlling an engine or a transmission according to the short term driving tendency index or the long term driving tendency index of the driver, wherein the controller determines a difference between the short term driving tendency index and the long term driving tendency index, and controls the shift according a corrected driving tendency index that is corrected from the long term driving tendency index when an absolute value of the difference between the short term driving tendency index and the long term driving tendency index is greater than or equal to an absolute value of a reference index difference. | 12-04-2014 |
20140365086 | APPARATUS AND METHOD FOR DETERMINING SHORT-TERM DRIVING TENDENCY - An apparatus and a method determines a short-term driving tendency. The apparatus may include a driving information collecting unit configured to collect driving information for determining the short-term driving tendency, a short-term driving tendency calculating module configured to receive input variables for determining the short-term driving tendency and calculate a short-term driving tendency index using a fuzzy control theory, and a calculation prohibition control module configured to check an accelerator position sensor (APS) signal of the vehicle and prohibit calculation of the short-term driving tendency index when an APS opening degree is equal to or less than a predetermined reference value. | 12-11-2014 |
20140365087 | DEVICE AND METHOD FOR CONTROLLING SHIFT IN VEHICLE - A device for controlling shift in a vehicle may include a data detector configured to detect data for a shift control and a controller configured to determine a short-term driving tendency of a driver using the data, determine a long-term driving tendency of the driver using the short-term driving tendency of the driver, and control shift in the vehicle in consideration of a running mode of the vehicle and the long-term driving tendency which are determined from the data. | 12-11-2014 |
20140365088 | VARIABLE CONTROL APPARATUS AND METHOD FOR DETERMINING SHORT-TERM DRIVING TENDENCY - A variable control apparatus and method determines a short-term driving tendency. The apparatus may include a driving information collecting unit configured to collect driving information for determining a driving tendency, a first short-term driving tendency calculating module configured to calculate a first short-term driving tendency index using a fuzzy control theory based on an inputted opening degree of an accelerator pedal position sensor (APS), a second short-term driving tendency calculating module configured to calculate a second short-term driving tendency index using the fuzzy control theory based on an inputted forward vehicle relative speed, and a control module configured to calculate a final short-term driving tendency index by differentially applying weight values of the first short-term driving tendency index and the second short-term driving tendency index for each vehicle speed. | 12-11-2014 |
20140365089 | APPARATUS AND METHOD FOR DETERMINING SHORT-TERM DRIVING TENDENCY - An apparatus and a method determines a short-term driving tendency. The apparatus may include a driving information collecting unit configured to collect driving information including a vehicle speed, and an inter-vehicle distance between the vehicle of the driver and a forward vehicle, a short-term driving tendency calculating module configured to receive a plurality of input variables for determining the short-term driving tendency and calculate a short-term driving tendency index using a fuzzy control theory, and a calculation prohibition control module configured to check the inter-vehicle distance between the vehicle of the driver and the forward vehicle and prohibit calculation of the short-term driving tendency index when the inter-vehicle distance is equal to or less than a predetermined reference value. | 12-11-2014 |
20140371949 | APPARATUS AND METHOD FOR DETERMINING SHORT-TERM DRIVING TENDENCY OF DRIVER - An apparatus and a method for determining a short-term driving tendency of a driver may include a data detector configured to detect an acceleration of a vehicle, a vehicle speed, and an inter-vehicle distance, and a controller configured to calculate a relative speed with respect to a forward vehicle from the vehicle speed and the inter-vehicle distance, extract fuzzy result values for the vehicle speed and the inter-vehicle distance, respectively, by setting a membership function that corresponds to each of the acceleration of the vehicle and the relative speed with respect to the forward vehicle, and determine the short-term driving tendency of the driver using the fuzzy result values. | 12-18-2014 |
20150019088 | APPARATUS AND METHOD OF PROCESSING ROAD DATA - An apparatus for processing road information includes: a global positioning system (GPS) sensor configured to detect a location of a vehicle; a navigation device configured to output short-range road information and long-range road information according to a location of the vehicle; and a vehicle controller configured to restore forward road information by using the short-range road information and the long-range road information and control an engine or a transmission according to the forward road information. | 01-15-2015 |
20150019093 | SYSTEM AND METHOD OF CONTROLLING TRANSMISSION FOR VEHICLE - A system and a method of controlling a transmission for a vehicle can protect the transmission by controlling an oil temperature in the transmission when driving on a long uphill road. The system may include: an engine generating driving torque; a transmission converting and outputting the driving torque generated at the engine; a lock-up clutch disposed between the engine and the transmission, and directly coupling the engine to the transmission selectively; a data detector detecting data for controlling the transmission; and a controller determining whether a long uphill road condition is satisfied based on the data, determining whether a protective logic operating condition is satisfied if the long uphill road condition is satisfied, and operating a protective logic if the protective logic operating condition is satisfied. | 01-15-2015 |
20150019102 | SYSTEM AND METHOD OF CONTROLLING STARTING OF VEHICLE - A system and a method of controlling vehicle starting may include a wheel speed sensor detecting a speed of at least one wheel among wheels of the vehicle, a vehicle speed detector detecting a vehicle speed, an acceleration detector detecting a vehicle acceleration, a vertical acceleration sensor detecting a vertical acceleration of the vehicle, a wheel torque detector calculating a wheel torque, an ambient temperature sensor detecting an ambient temperature, and a controller. The controller may calculate a wheel slip amount based on the speed of at least one wheel, the vehicle speed and the vehicle acceleration, determine whether a wheel slip occurs by comparing the wheel slip amount with a first predetermined wheel slip amount, determine a road state based on the ambient temperature and the vertical acceleration of the vehicle if the wheel slip occurs, and perform a starting control according to the road state. | 01-15-2015 |
20150019113 | SYSTEM AND METHOD OF CONTROLLING STARTING OF VEHICLE - A system of controlling starting of a vehicle may include a vehicle speed sensor detecting vehicle speed, an accelerator pedal position sensor detecting position of an accelerator pedal, a brake pedal position sensor detecting when a brake pedal may be operated or not, a distance sensor detecting a distance from a previous vehicle, a timer detecting time lapse from particular time, and a controller electrically connected to the vehicle speed sensor, the accelerator pedal position sensor, the brake pedal position sensor, the distance sensor and the timer, and adapted to change starting pattern according to the distance from the previous vehicle and to perform starting control according to the changed starting pattern when the vehicle may be started in a stopped state. | 01-15-2015 |
20150066319 | METHOD FOR CONTROLLING SHIFT OF AUTOMATIC TRANSMISSION IN VEHICLE - A method for controlling a shift of an automatic transmission in a vehicle may include calculating a first long-term driving style index by using running information in the running mode, calculating a second long-term driving style index by using running information in the sports mode, when the vehicle is switched from the running mode to the sports mode, temporarily storing the first long-term driving style index at the switching point, and when the sports mode is switched to the running mode, if the second long-term driving style index is greater than the temporarily stored first long-term driving style index, updating the second long-term driving style index as a final long-term driving style index, and determining a driving style. | 03-05-2015 |
20150088802 | METHOD OF DETERMINING SHORT TERM DRIVING TENDENCY AND SYSTEM OF CONTROLLING SHIFT USING THE SAME - A method of determining a short term driving tendency and a system of controlling shift using the same that reflects precisely a will of a driver on the shift by determining a short term driving tendency is disclosed. The method may include detecting input variables, determining whether determination condition of the short term driving tendency is satisfied, calculating tendencies and output membership function values according to a plurality of fuzzy rules based on the input variables if the determination condition of the short term driving tendency is satisfied, and determining a short term driving tendency index based on the tendencies and the output membership function values according to the plurality of fuzzy rules. | 03-26-2015 |