| Entries |
| Document | Title | Date |
|---|
| 20080215219 | Hydraulic Actuating Device for an Automotive Friction Clutch - A hydraulic actuating device ( | 09-04-2008 |
| 20080215220 | Method and Device for Control of an Automated Friction Clutch Between an Engine and a Gearbox - A method for controlling and reducing the load on an automated clutch. Based on a variety of parameters, a conclusion based on the load status of the clutch or the friction elements regarding thermal load or wear is obtained. A clutch control module compares the load values, determined in this way, to the associated threshold values. If these threshold values are exceeded, the clutch control module initiates measures for reducing the load on the clutch. The measures do not require action by an operator and are based on action of the clutch controller, the drive motor, and/or the transmission such that the thermal load and/or the wear on the clutch are reduced. A plurality of load values and measures are considered for starting or stopping the vehicle on a gradient via the accelerator and for gear change operations during driving. | 09-04-2008 |
| 20080215221 | Clutch reference position - A process and device for the currentless referencing of a clutch position in non self-locking clutch actuating systems which are switched without current for a first predetermined, passive period of time or until an actuator standstill occurs, in order to verify a clutch reference position, then the clutch position achieved is determined by first measurement and current is supplied to the clutch actuating system for a predetermined, active period of time, the clutch actuating system being then switched again without current for another predetermined, passive period of time or until an actuator standstill occurs, the clutch position being determined by another measurement; finally the measured clutch position is checked to determine whether it can be verified as a new clutch reference position. | 09-04-2008 |
| 20080275614 | METHOD FOR DETERMINING THE CLUTCH APPLICATION POINT - A method is proposed for determining a clutch application point in a transmission of a vehicle having a spring-actuated clutch system in which the clutch application point is adapted according to at least one adequate regulated quantity of the clutch system. | 11-06-2008 |
| 20080281495 | Method and apparatus for the generation of a setting signal for an actuator of a clutch unit of a motor vehicle - A method and control apparatus for the generation of a setting signal for an actuator of a clutch unit of a motor vehicle with which the torque to be transmitted by the clutch unit can be set. A desired value for the torque to be transmitted is determined by a main control unit in dependence on predetermined first parameters. A setting signal for the actuator corresponding to the desired value is generated by an additional control unit on the basis of the determined desired value. A desired value tolerance range for the determined desired value of the torque is determined by the main control unit in dependence on predetermined second parameters. The desired value tolerance range is transmitted to the additional control unit, with the additional control unit determining an actual value of the torque transmitted or transmissible by the clutch unit and generating a new setting signal for the actuator when the actual value is outside the desired value tolerance range. | 11-13-2008 |
| 20080312800 | LOCK-UP CONTROL FOR TORQUE CONVERTER - A lock-up control system including a lock-up differential pressure generator and a controller that is programmed to: when increasing a lock-up differential pressure command value with time to establish the lock-up state of the torque converter, switch a gradient of the lock-up differential pressure command value from a first gradient to a predetermined gradient larger than the first gradient when an actual slip rotation speed is decreased to a predetermined slip rotation speed value or less; and switch the gradient of the lock-up differential pressure command value from the predetermined gradient to a second gradient smaller than the predetermined gradient when the actual slip rotation speed exceeds the predetermined slip rotation speed value again after being decreased to the predetermined slip rotation speed value or less. | 12-18-2008 |
| 20090062997 | CONTROL DEVICE OF AUTOMATIC TRANSMISSION, AND CONTROL METHOD OF AUTOMATIC TRANSMISSION - ECU executes in-neutral control in a case where a first clutch is brought into a half-engagement state on the basis of execution of neutral control. During the in-neutral control, ECU detects engine speed and input-shaft rotating speed, and detects differential rotation before an oil pressure change. Subsequently, in a case where the differential rotation before an oil pressure change detected by ECU has exceeded a first differential rotation threshold value, the operating oil pressure for a hydraulic servo is reduced by the first oil pressure. | 03-05-2009 |
| 20090076695 | Method for controlling a friction clutch - A method is proposed in which the distance sensor of a friction clutch operated automatically by a clutch actuator is calibrated in the disengaged state, wherein if the calibration is lost the friction clutch is slowly engaged until the friction clutch is in an engaged state, and when the friction clutch is completely engaged the distance sensor is recalibrated. | 03-19-2009 |
| 20090082934 | Power Transfer Assembly With Torque Sensors And Torque Control System - A transfer case for a motor vehicle having an input shaft, a first output shaft, a second output shaft, a clutch, a transfer mechanism, a sensor portion and a magnetoelastic torque sensor. The clutch has a clutch pack and a thrust mechanism that is configured to exert an engagement force on the clutch pack. The clutch pack has a first portion, which is rotatably driven by either or both of the input shaft and the first output shaft, and a second portion that is supported for rotation relative to the first portion. The transfer mechanism couples the second portion of the clutch pack to the second output shaft. The sensor portion is coupled to the first or second output shaft and is at least partially formed of a magnetoelastic material. The magnetoelastic torque sensor is disposed about and radially in-line with the sensor portion. | 03-26-2009 |
| 20090112429 | METHOD AND APPARATUS TO CONTROL CLUTCH PRESSURES IN AN ELECTRO-MECHANICAL TRANSMISSION - A method for reducing occurrence of clutch slip in electromechanical transmission adapted to selectively transmit mechanical power to an output member through selective application of a hydraulically actuated clutch includes monitoring operation of said clutch, identifying an indication of clutch wear based upon said monitoring said operation, and increasing a minimum clamping force applied to said clutch based upon said indication of clutch wear. | 04-30-2009 |
| 20090125202 | Torque converter with turbine mass absorber - A torque converter having a first damper stage, a second damper stage, a floating flange torsionally connecting the first and second damper stages, an inertia element, and a tuned torsion damper. The torsion damper connects the inertia element and the flange. In a preferred embodiment, the inertia element is a turbine. In one embodiment, the first damper stage is a radially outer damper stage and the second damper stage is a radially inner damper stage. In another embodiment, the torsion damper generates a friction torque when rotated. | 05-14-2009 |
| 20090143950 | CONTROL APPARATUS OF A HYBRID VEHICLE AND METHOD FOR CONTROLLING THE SAME - A control apparatus for a hybrid vehicle that is capable of suppressing overheating of the second clutch is taught herein. Control is switched between engine-used slip drive control and motor drive control on a basis of a vehicle load such as weight or a road incline gradient. Control methods for hybrid vehicles are also disclosed. | 06-04-2009 |
| 20090248266 | ENGAGING-FORCE CONTROL APPARATUS AND METHOD - An engaging-force control apparatus for a friction-engagement element controls a slip rotational speed between an input-side rotational speed and an output-side rotational speed of the friction-engagement element by increasing or decreasing an engaging force of the friction-engagement element. The engaging-force control apparatus includes an engaging-force feedback control section configured to control the engaging force of the friction-engagement element to bring the slip rotational speed of the friction-engagement element closer to 0 by way of feedback control; and an engaging-force restricting section configured to restrict the engaging force of the friction-engagement element to prevent the engaging force from exceeding a minimum engaging-force value necessary to maintain the slip rotational speed at 0. | 10-01-2009 |
| 20090254258 | CONTROL SYSTEM OF TRANSMISSION - A clutch control unit includes a clutch motor controller that controls a clutch motor. The clutch motor controller has a target clutch motor current computing unit that computes a target clutch motor current for adjusting torque of the clutch motor to be torque corresponding to an operating state of the vehicle, and a motor driving and braking selection unit that selects a motor driving mode in which the clutch motor is driven by applying feedback control on an output of the clutch motor or a motor braking mode in which the clutch motor is braked by short-circuiting the clutch motor according to a difference between the target clutch motor current and an actually detected clutch motor current. It thus becomes possible to provide a control system of a transmission that engages a clutch by a motor braking force in a manner that suits the running state of the vehicle. | 10-08-2009 |
| 20090271082 | CONTROL DEVICE AND CONTROL METHOD FOR TRANSMISSION MECHANISM, AND CONTROL METHOD FOR VEHICLE WITH ENGINE - A control device for a transmission including a clutch driven by an actuator mechanism, such as a motor, is provided. The control device controls the actuator so that the rider does not perceive generation of a braking force when the clutch is shifted from a disengaged state to an engaged state while traveling, thereby enhancing riding comfort. In performing the control to actuate a clutch from a disengaged state to an engaged state, the control device makes a determination about whether or not to restrict engagement of the clutch based on information about a rotational speed on an upstream side of the clutch and information about a rotational speed on a downstream side of the clutch. If it is determined that engagement of the clutch is to be restricted, the control device delays engagement of the clutch until the engine speed is increased to an acceptable level. | 10-29-2009 |
| 20090276129 | Method and System for Protecting a Starting Clutch - The present invention relates to a method of protecting a starting clutch that generates an estimated equivalent temperature of the starting clutch and performs an operation for protecting the starting clutch if the estimated temperature exceeds critical temperature, in order to prevent the burnout of the starting clutch caused by excessive slip under severe conditions. | 11-05-2009 |
| 20090276130 | AIR CONDITIONING TORQUE COMPENSATION ENERGY MATCHING INERTIA TRANSFER - An engine control system comprises a torque control module, an air conditioning (A/C) load comparison module, and an A/C load compensation module. The torque control module controls an engine to produce a first torque request based on a first torque maintains a current speed of the engine. The A/C load comparison module compares a transient load to a difference between a torque available to the engine and the first torque request. The A/C load compensation module selectively increases the first torque request prior to a clutch engagement based on the comparison. | 11-05-2009 |
| 20090281700 | METHOD FOR CONTROLLING AN AUTOMATED FRICTION CLUTCH - A method of controlling an automated friction clutch in a drivetrain of a motor vehicle between a drive motor and a manual transmission. During clutch actuation, at least one operating parameter of the friction clutch is detected by a sensor and from variation of the operating parameter at least one adaptation parameter is derived for correcting a control parameter of the associated clutch control element. To obtain information about variation of the clutch release force and to improve the control of an associated clutch control element, the friction clutch is fully disengaged with constant control or actuation of the clutch control element. During the disengagement process, the release travel path is determined as a function of release time, and from the time variation of the release travel path, a characteristic value is determined which is used to determine an adaptation parameter for correcting the control parameter of the clutch control element. | 11-12-2009 |
| 20090287387 | CLUTCH CONTROL SYSTEM - When a predetermined time has passed without detection of engine stall and without detection of the neutral state and without detection of a vehicle starting operation, in a first control state in which a clutch is in a disengaged state, a clutch control system effects transition to a second control state in which transition to a third control state is permitted. When a vehicle starting operation is detected in the second control state B in which the clutch is in the disengaged state, a liquid pressure modulator is driven to effect transition to the third control state in which the clutch is put in the engaged state or a partially engaged state. When an engine stall or the neutral state is detected in the second control state, transition to the first control state A is effected. | 11-19-2009 |
| 20090292432 | CLUTCH CONNECTION CONTROL APPARATUS AND VEHICLE INCLUDING THE SAME - A pressure sensor detects the change in pressure within a cylinder in a clutch master cylinder in a case where a clutch shifts from a connected state to a disconnected state. The pressure within the cylinder is detected at a time point where a rate of the pressure increase is changed. The position of a rod in this case or the rotation angle of a motor in an actuator is detected as a touch point preparation position. The touch point preparation position is a stage preceding power generated by an engine being transmitted to the clutch. The actuator moves the rod at high speed until the position of the rod reaches the position corresponding to the touch point preparation position. | 11-26-2009 |
| 20090299590 | CLUTCH CONTROL DEVICE - A clutch control device is provided for a clutch to connect and disconnect the transmission of a rotational drive force from a power source to a drive wheel in a vehicle. A clutch control unit is configured to control a control amount for said clutch. A drive wheel rotation start detector is configured to detect a start of rotation of said drive wheel. A control correction amount calculator is configured to calculate a control correction amount of said clutch based on a difference between the clutch control amount detected at the start of rotation of said drive wheel and a predetermined reference value. The clutch control unit is further configured to apply said control correction amount to the control amount for said clutch to control said clutch. | 12-03-2009 |
| 20100004837 | AUTOMATIC CALIBRATION OF THE TORQUE TRANSFER TOUCH POINT IN AN ELECTRICALLY ACTUATED CLUTCH IN A HYBRID VEHICLE - A method of determining a torque transfer touch point of a clutch within a drive train includes applying a predetermined amount of current to an electric motor such that the electric motor will apply a torque to at least a portion of a clutch. The predetermined amount of current will not rotate a shaft of the motor when the clutch is at least partially engaged. The method also includes initiating disengagement of the clutch, detecting movement of at least a portion of the motor, and recording a clutch parameter that is generally coincident with the detecting movement of a least a portion of the motor. | 01-07-2010 |
| 20100010718 | Method of Controlling the Closing Phase of a Clutch of an Automated Automobile Transmission System - A method of controlling an automobile clutch in an automated transmission system with a CMPC control is disclosed with an application of vehicle clutch control in an AMT system. The driver's request is translated in terms of sliding velocity ω | 01-14-2010 |
| 20100036573 | HALF-CLUTCH STATE DECISION DEVICE - The half-clutch state decision device of the present invention extracts a high-frequency component and a low-frequency component of an engine rotation speed through filtering when the engine rotation speed has dropped while a vehicle is stopped, and calculates a locus length of the high-frequency component and a locus length of the low-frequency component through accumulation thereof. Furthermore, it is decided whether a half-clutch state exists from a relationship between the calculated locus lengths of the high-frequency and low-frequency components. Specifically, it uses a two-dimensional map (FIG. | 02-11-2010 |
| 20100036574 | Controlling a Throttle for Fuel Cut Acquisition - A system and method for determining a required throttle position and operating a throttle in the required throttle position to attain a required engine speed for fuel cut acquisition is disclosed. A lock-up clutch may be engaged without a shock if a required engine speed is achieved that corresponds to a current transmission speed. Fuel economy may be increased by cutting fuel to the engine when a lock-up clutch is engaged. | 02-11-2010 |
| 20100057317 | HALF-ENGAGE CLUTCH POINT LEARNING DEVICE FOR WET MULTIPLE DISK CLUTCH - A power transmission device for a vehicle equipped with a wet multiple disk clutch for disconnecting the power at the time of gearshift by using a clutch controller, wherein the amount of engagement where the clutch is half-engaged is learned maintaining precision. In the present invention, the clutch controller of the wet multiple disk clutch moves a clutch piston over the whole stroke thereof by using the working fluid for varying the amount of engagement at the start of learning the amount of engagement at a point where the clutch starts half-engaging and, immediately thereafter, the amount the clutch is half-engaged is detected. Upon moving the clutch piston, the working fluid present among the friction disks of the wet multiple disk clutch is drained and is replaced by the new working fluid avoiding detection error caused by the fluctuation in the temperature of the working fluid and eliminating unstable operation of the clutch piston caused by static friction of a large resistance. The amount of engagement at the point where the clutch starts half-engaging is determined by gradually increasing the amount of engagement after the clutch is disengaged and detecting a change in the rotational speed of the clutch input shaft. | 03-04-2010 |
| 20100057318 | Clutch control device and clutch control correction amount calculating method - Oil pressure detecting means | 03-04-2010 |
| 20100082211 | Clutch controlling apparatus for vehicle - A start permission decision section issues a start permission when an engine speed and a throttle valve opening become higher than predetermined values. A clutch-torque capacity storage section stores a clutch-torque capacity reference map in which a clutch-torque capacity is set as a function of at least the engine speed or as a function of the engine speed and the throttle valve opening. A clutch-torque capacity correction section corrects the clutch-torque capacity reference map so that the clutch-torque capacity is proportionally reduced in response to the difference between the engine speed and a start permission speed when a start permission is issued. An oil pressure controlling section connects the clutch with the clutch-torque capacity obtained in accordance with the corrected clutch-torque capacity map to start the vehicle. | 04-01-2010 |
| 20100094517 | FLOW CONTROL VALVE FOR CLUTCH CONTROL DEVICE - A clutch control device for vehicle is equipped with a clutch actuator driven by a working fluid, and works to correctly control the rate of connection of the clutch by a simple means compensating secular change of a flow rate control valve that controls the working fluid. The clutch control device has a single flow rate control valve | 04-15-2010 |
| 20100094518 | METHOD AND DEVICE FOR CONTROLLING THE SLIP OF A VEHICLE CLUTCH - A method for controlling the slip of a vehicle clutch, wherein in the method the difference between a speed signal of the drive-end input shaft of the clutch and a filtered speed signal of a transmission-end clutch output shaft are maintained at a desired value. | 04-15-2010 |
| 20100100294 | CONTROLLER FOR MULTIPLE DISK CLUTCH CONTROLLER, AND TRANSFER CASE | 04-22-2010 |
| 20100106384 | DRIVING POWER DISTRIBUTION APPARATUS AND METHOD FOR CONTROLLING TORQUE COUPLING | 04-29-2010 |
| 20100114442 | METHOD OF ADJUSTING CHARACTERISTICS OF A CLUTCH IN A HYBRID ELECTRIC VEHICLE - A method of adjusting the characteristics of a clutch in a hybrid electric vehicle, more particularly to a method of adjusting characteristic of a clutch for a hybrid electric vehicle, which is capable of maintaining the characteristic of the clutch at an appropriate level while suppressing the frequency of the adjustment as possible, thereby a driver or passengers of the vehicle hardly feel annoyance caused by frequent adjustment of characteristic of a clutch. | 05-06-2010 |
| 20100114443 | CLUTCH CHARACTERISTIC ADAPTION METHOD FOR AUTOMATIC DUAL CLUTCH TRANSMISSION - A method for clutch characteristic curve adaptation of an automatic dual-clutch transmission which comprises two sub-gearboxes each with an input shaft connected, via a friction clutch, to the drive shaft of a motor and several gears that are shifted via a friction-synchronized gear clutch. A value of the current touch point of the friction clutch can be determined with the motor running and the gears disengaged in a load-free sub-gearbox. The method includes the steps of starting synchronization of a gear clutch with a defined force of a regulator. Waiting until the gear clutch is synchronized. Engaging the friction clutch of the until the gear clutch is synchronizes. Determination the current touch point from the current synchronous torque of the gear clutch and the current regulating parameter of the associated clutch regulator. Then, adapting the clutch characteristic curve of the friction clutch in view of the current touch point. | 05-06-2010 |
| 20100138121 | METHOD OF CONTROLLING A FRICTION CLUTCH IN A MOTOR-VEHICLE TRANSMISSION - The method comprises the steps of:
| 06-03-2010 |
| 20100145584 | LOCK-UP CLUTCH CONTROL DEVICE - When deceleration lock-up differential pressure learning control is entered and a difference between this deceleration lock-up differential pressure instruction value and a disengagement initial pressure of lock-up smooth off control becomes smaller than prior to deceleration lock-up differential pressure learning control, the disengagement initial pressure PS of lock-up smooth off control is corrected to a low side in accordance with a difference between that deceleration lock-up differential pressure instruction value and the disengagement initial pressure. Furthermore, by changing the sweep gradient of lock-up smooth off control to a small side, and in addition, correcting the disengagement initial pressure PS of lock-up smooth off control to a low side in consideration of disengagement delay of the lock-up clutch pursuant to that sweep gradient change, the actual disengagement time during lock-up smooth off control can be matched with a target disengagement time. | 06-10-2010 |
| 20100145585 | METHOD FOR CONTROLLING THE SLIP OF A DIRECT DRIVE CLUTCH OF A TORQUE CONVERTER - A method for controlling slip of a direct-drive clutch of a torque converter during a gear change in an automated transmission, that includes sending, as a set point, values of a cyclic opening ratio to an electro-valve for adjusting hydraulic pressure of the direct-drive clutch, wherein the initial value is determined from parameters resulting from a mapping. The value of the initial cyclic opening ratio sent as a set point is the value of the nominal initial cyclic opening ratio determined by a mapping, that is corrected by a predetermined correction coefficient memorized at the end of a previous similar gear change, from a comparison between a value of a slip representative of the slip values measured during the previous change and that of a theoretical reference slip corresponding to a nominal engine speed and turbine speed. | 06-10-2010 |
| 20100145586 | METHOD FOR CONTROLLING THE TORQUE CONVERTER CLUTCH (TCC) PRESSURE DURING COAST DOWNSHIFT EVENTS - A method is provided for controlling the torque converter clutch (TCC) pressure during coast downshift events. In order to provide a method for controlling the TCC pressure during coast downshift events, it is proposed that coast pressure compensation is computed at the beginning of the shift and that the coast pressure compensation is applied on the TCC pressure during the coast downshift. With such pressure compensation it is possible to stay in regulation mode which improves both shift quality and fuel consumption. | 06-10-2010 |
| 20100152985 | METHOD AND DEVICE FOR CONTROLLING THE DEGREE OF ENGAGEMENT OF AN AUTOMATIC OR AUTOMATED MOTOR VEHICLE CLUTCH - A method and a device for controlling an automatic or automated clutch ( | 06-17-2010 |
| 20100152986 | METHOD FOR CONTROLLING A DUAL CLUTCH TRANSMISSION - A method for controlling dual clutch transmission with at least two partial drive trains, each arranged to be coupled with an engine by means of a clutch, in that, a first clutch of an actively operated partial drive train currently transmitting torque is opened, whereas a second clutch of the partial drive train not actively operated is closed in the already engaged gear and determining a reduction of a maximum possible lateral guiding force of at least one drive wheel and determining torque transmitted by the clutches, wherein, in the case of reduction of the maximally possible lateral guiding force below a default value and in the case that torque is transmitted by both clutches, the torque of one of the clutches is reduced. | 06-17-2010 |
| 20100161189 | METHOD FOR CONTROLLING A COUPLING DEVICE BETWEEN AN INPUT SHAFT AND AN OUTPUT SHAFT - The invention relates to a method for controlling a coupling device between an input shaft driven by a motor and an output shaft that can transmit a maximum torque according to the position of an actuator of the coupling device | 06-24-2010 |
| 20100179738 | METHOD FOR PROCESSING DATA IN A DEVICE FOR POWER ASSISTANCE OF UPHILL MANEUVERS OF A MOTOR VEHICLE - A method for processing data recorded during a data acquisition, the data defining a correspondence between values representing torque transmitted by a clutch and values representing a position of a clutch control member. The processing method includes modifying the recorded data to define a modified correspondence between the values representing the torque transmitted by the clutch and the values representing the position of the clutch control member, the modified correspondence to be used in a hill start assist device of a motor vehicle including a power train connected to drive wheels by a transmission system including the clutch and a braking system, whereby the release of the braking system is automatically controlled by the assist device. | 07-15-2010 |
| 20100179739 | POWER-ASSISTANCE DEVICE FOR A VEHICLE - An assist device for a vehicle including a power train connected to drive wheels by a clutch, a bus, and a power-assist parking brake. The device includes sensors that transmit signals to the bus and a mechanism for learning-based estimation of a clutch curve on the basis of the signals, the curve connecting the position of the clutch pedal and a maximum torque range that can be transmitted by the corresponding clutch and a mechanism phasing the delivered signals to reduce an influence of noise on the sensors associated with the signals. | 07-15-2010 |
| 20100185374 | VEHICLE ASSIST METHOD - A control assist method for a vehicle including a power train connected to drive wheels by a clutch. The method updates a clutch curve which connects a position of a clutch pedal and a maximum torque that can be transmitted by the corresponding clutch, as a function of reliability thereof, the reliability being lower when the vehicle is first used and increasing with use of the vehicle. | 07-22-2010 |
| 20100191431 | METHOD FOR OPERATING A DRIVETRAIN - A method for operating a drivetrain comprising an automatic transmission ( | 07-29-2010 |
| 20100217493 | IDLE STOP SYSTEM FOR VEHICLES - In an idle stop system for an engine mounted in a vehicle, when it is determined predetermined stop conditions are met, the engine is automatically stopped. During the engine stop, when it is determined that predetermined restart conditions are met, the engine is automatically restarted. Further, it is determined whether or not a predetermined period of time has elapsed since the restart of the engine. When it is determined that the predetermined period of time has elapsed, the clutch mechanism is controlled into the connection thereof at and after a time instant when it is determined that the predetermined period of time has elapsed. Hence, the connected state of the clutch mechanism is realized after a controlled delay. | 08-26-2010 |
| 20100228456 | CONTROL METHOD FOR CLOSING A CLUTCH IN AN AUTOMATIC MANUAL TRANSMISSION - A control method for closing a clutch in an automatic manual transmission during a gear shifting to pass from a current gear to a successive gear; the automatic manual transmission has a gearbox provided with at least one primary shaft and at least one secondary shaft connected to driving wheels, and at least one clutch interposed between the primary shaft of the gearbox and a drive shaft of an engine; the control method includes, during the closing of the clutch, when the rotation speed of an engine side of the clutch is close to the rotation speed of a gearbox side of the clutch, the steps of: determining a speed difference between the rotation speed of the engine side of the clutch and the rotation speed of the gearbox side of the clutch; determining an acceleration target according to the speed difference; and determining a target torque that has to be transmitted through the clutch according to the acceleration target. | 09-09-2010 |
| 20100235062 | LOCK-UP CLUTCH CONTROLLER - A controller has a command section, a control section, a time measurement section, and a command fixing section. The command section generates a command regarding the actuation state of a lock-up clutch in accordance with a condition value that is determined by the accelerator operating amount and the vehicle speed. The time measurement section starts to measure time when the accelerator operating amount drops to 0 with the current condition value maintained in a hysteresis range and the command section generates the acceleration slip executing command. When the accelerator operating amount is increased from 0, the time measurement section stops the measurement of time and resets the measured time to 0. The command fixing section fixes the command of the command section as an acceleration slip executing command in the period from when the time measurement by the time measurement section has started to when the measured time reaches a determination value. When the accelerator operating amount is increased from 0 or the time measured by the time measurement section reaches the determination value, the command fixing section cancels the fixation of the acceleration slip executing command. | 09-16-2010 |
| 20100241328 | METHOD FOR HILL START ASSISTANCE FOR MOTOR VEHICLE - A method for hill start assistance for a motor vehicle and to an associated device that includes a clutch and a transmission between the clutch and driving wheels of the vehicle. The method determines the torque of the clutch for maintaining the vehicle in an immobile position based on a known engine torque, wherein the torque of the clutch is determined by taking into account a portion of the engine torque dedicated to operation of constituent mechanisms of the vehicle other than the clutch. | 09-23-2010 |
| 20100250079 | CLUTCH CONTROL DEVICE AND CLUTCH CONTROL METHOD - A clutch control device that controls a clutch by driving a piston using a working fluid, having: stroke start determining means (S | 09-30-2010 |
| 20100250080 | CONTROL APPARATUS FOR AUTOMATED MANUAL TRANSMISSION - A control apparatus for an automated manual transmission having a plurality of power transmitting units respectively including clutches for connecting and disconnecting a power transmission path between a power source and the automated manual transmission and transmission mechanisms connected to the corresponding clutches so as to transmit a power of the power source, includes a clutch temperature calculating means for calculating a temperature of each of the clutches, and a vehicle moving start controlling means for controlling a moving start of the vehicle so that when the temperature of one of the clutches, calculated by means of the clutch temperature calculating means, is equal to or higher than a predetermined usage restriction threshold value, the other one of the clutches is used so as to transmit the power of the power source to the other one of the power transmission units, having the other one of the clutches. | 09-30-2010 |
| 20100262346 | CONTROL DEVICE AND CONTROL METHOD FOR LOCKUP CLUTCH AND ENGINE TORQUE IN A VEHICLE - If the a rotational speed difference (Ne−Nt) between an engine speed (Ne) and a turbine speed (Nt) when it is determined that a lock-up ON condition (OFF→ON) is satisfied is large, the lock-up clutch is not engaged but torque reduction control is executed to reduce the engine speed (Ne), thus reducing the rotational speed difference (Ne−Nt) (steps ST | 10-14-2010 |
| 20100324794 | TORQUE CONVERTER CONTROL FOR VARIABLE VALVE LIFT POWERTRAIN SYSTEMS - A control system for a powertrain of a vehicle includes a torque module and a damping control module. The torque module determines a first output torque and a second output torque of the engine. The second output torque is determined after the first output torque. The torque module also determines a torque difference based on the first output torque and the second output torque. The damping control module generates a damping torque in a transmission based on the torque difference. | 12-23-2010 |
| 20110015843 | METHOD FOR CLASSIFYING A CLUTCH UNIT - A method is described for classifying a clutch unit for a drivetrain of a motor vehicle, wherein the clutch unit has at least one friction clutch for the controllable transmission of a torque from an input element to an output element and has an actuator for actuating the friction clutch. Here, the clutch unit is controlled on the basis of a predefined characteristic curve which describes a predefined dependency of the clutch torque to be transmitted on an actuator control variable. | 01-20-2011 |
| 20110022279 | Electronic Locking Differential - A method for controlling a clutch of an electronic locking differential for a vehicle includes determining either that a speed of the vehicle is less than a reference speed or that a desired state of the clutch is a disengaged state, determining that an angular displacement of a steering wheel from a centered position is less than a first reference angle, and disengaging the clutch. | 01-27-2011 |
| 20110022280 | SYSTEM FOR CONTROLLING PEAK TORQUE IN MANUAL TRANSMISSIONS - A system for controlling a flow of hydraulic fluid between a hydraulic actuator and a torque transmitting device includes a position sensor in communication with the hydraulic actuator and operable to detect a position of the hydraulic actuator, a temperature sensor in communication with the hydraulic fluid and operable to detect a temperature of the hydraulic fluid, and a flow control device. The flow control devices includes a housing defining a first passage and a second passage, the first passage in communication with the hydraulic actuator and the second passage in communication with the torque transmitting device. An electronic actuator is located between the first passage and the second passage and is operable to selectively control a flow of the hydraulic fluid between the first passage and the second passage. A controller is in communication with the position sensor, the temperature sensor, and the electronic actuator of the flow control device. | 01-27-2011 |
| 20110046862 | DEVICE AND METHOD FOR DETERMINING A MAPPING OF THE TORQUE TRANSMITTED BY A CLUTCH IN AN AUTOMOBILE AND HILL-START ASSISTANCE SYSTEM FOR AN AUTOMOBILE EQUIPPED WITH SUCH DEVICE - A device for determining, when driving a vehicle, a mapping of torque transmitted by a clutch of the automobile based on a position of a clutch control member. The device includes a mechanism updating the mapping based on position thresholds of the clutch control member. The updating modifies values of the thresholds based on minimum and maximum values of the positions of the control member stored in the mapping and on current values of the thresholds. | 02-24-2011 |
| 20110054753 | TORQUE LIMITING CLUTCH WITH ENGINE TORQUE MANAGEMENT FOR THERMAL PROTECTION - A method for controlling slip across a torque limiting clutch includes determining a driveline slip threshold. A cut-off temperature is determined based on at least one of a clutch temperature, a steering wheel input and a vehicle speed. A driveline slip is determined. At least of a spark retardation and a throttle cut-off is initiated when the clutch temperature is greater than the cut-off temperature and the driveline slip is greater than the driveline slip threshold. | 03-03-2011 |
| 20110054754 | CLUTCH ACTUATOR AND METHOD FOR THE CONTROL THEREOF - A clutch actuator and to a method for the control thereof. The actuator actuates a multi-disk clutch, and to do so has actuator modules. The number of which corresponds to the number of the friction clutches. The modules have separate control units and electric motors, which are controlled by the control units and act on the friction clutches by a disengaging mechanism. In order to counter block the partial drive trains disposed downstream of the friction clutches, particularly automatically closed friction clutches during a malfunction of an actuator module, the actuator modules are connected among each other to a data line, which allows monitoring of the actuator modules and counter-measures. | 03-03-2011 |
| 20110054755 | CONTROL DEVICE AND CONTROL METHOD FOR AUTOMATIC TRANSMISSION - A control device for an automatic transmission includes a determining unit determines that a friction element is to be set in an engaged condition in case a vehicle speed is equal to or higher than a determination reference and determining that the friction element is to be set in a disengaged condition in case the vehicle speed is lower than the determination reference, and a engagement control unit that performs control to engage or disengage the friction element on the basis of a determination result of the determining unit, wherein the engagement control unit comprises a prohibiting unit that prohibits setting of the friction element in the engaged condition until a predetermined condition is established, regardless of the determination result, after the friction element has been modified from the engaged condition to the disengaged condition. | 03-03-2011 |
| 20110071742 | AUTOMATIC TRANSMISSION AND LEARNING METHOD THEREOF - When an inertia phase of an upshift of the transmission is started during a lockup clutch engagement operation, a following command oil pressure to be used during a following lockup clutch engagement operation is learned on the basis of a slip rotation speed, which is a rotation speed difference between an input side rotation speed of the torque converter and an output side rotation speed of the torque converter, at or after a start point of the inertia phase. | 03-24-2011 |
| 20110077830 | METHOD AND APPARATUS FOR NEUTRAL IDLE CLUTCH CONTROL IN A VEHICLE HAVING AN ENGINE START-STOP POWERTRAIN - A method and apparatus provide control of a neutral idle (NI) clutch to allow a vehicle with automatic engine start-stop functionality to utilize the NI state as a transitional shift state, either upon or just prior to engine shutdown, to minimize driveline disturbances. By controlling the NI state, the vehicle driveline is decoupled and torque multiplication is prevented upon engine restart. Execution of an algorithm unloads the engine upon shutdown, and unloads or partially loads the engine as a designated NI clutch reapplies during an engine restart event. The NI clutch may be a component of a multi-speed automatic transmission, e.g., a 6-speed or an 8-speed transmission, having a plurality of torque transfer mechanisms or clutches. One of these clutches is designated as the NI clutch, and this designated NI clutch may be selectively actuated to enter the NI state in conjunction with engine shut down/restart. | 03-31-2011 |
| 20110093175 | METHOD AND DEVICE FOR ENGAGING A CLUTCH - In a method for engaging a clutch having at least one previously known touch point position, the clutch is engaged according to a speed profile, the course of which depends on at least one of the previously known touch point positions. | 04-21-2011 |
| 20110093176 | METHOD FOR ACTUATING A HYDRAULIC OPERATED CLUTCH AND CONTROLLER - A method is provided for actuating a hydraulic operated clutch of an automotive gear box for shifting gears, that includes, but is not limited to the steps of collecting data from a CAN-bus system, which includes, but is not limited to data about torque and speed of the gear box particularly of an input shaft and/or of an output shaft, and adjusting the engagement time for engaging the input shaft with the output shaft based on the collected data by adjusting the maximum hydraulic diameter for a working fluid for operating the clutch. By using the information provided by the CAN-bus the exact situation of the transmission system during the shifting of the gears can be estimated. Based on the information provided by the CAN-bus it is possible to allow at mainly every situation a maximum fast coupling without significant impairments with respect to the provided comfort. | 04-21-2011 |
| 20110112738 | PROCESS FOR DETECTING TUNING MEASURES - The invention relates to a process for detecting tuning measures through which the actual output power of an internal combustion engine of a motor vehicle is increased relative to design output power value, whereby, to detect the tuning measures, deviations of actual output power value from a nominal output power value are evaluated, the latter being provided by a control device. | 05-12-2011 |
| 20110125378 | METHOD FOR ADAPTING THE KISS POINT - A method for setting the engagement point of a friction clutch of a multi-step transmission for a motor vehicle. The friction clutch can be activated, controlled, by means of a clutch actuator. A set point value of the clutch actuator is set for the engagement point of the friction clutch as a function of a time profile of a physical variable which occurs starting from a transition state after activation of the friction clutch to a transition value. An electric machine is connected to the multi-step transmission. Influencing of the multi-step transmission by the electric machine is taken into account in the setting of the engagement point of the friction clutch. | 05-26-2011 |
| 20110166760 | METHOD FOR CONTROLLING A CLUTCH UNIT - A clutch unit comprises a wet friction clutch for controllable transmission of a torque from an input element to an output element, oil for cooling the friction clutch, and an actuator for actuating the friction clutch. In order to control the clutch unit, a temperature is ascertained in the friction clutch. A characteristic curve of the friction clutch that describes the dependence of a clutch torque on an actuator control variable is adapted as a function of the ascertained temperature. The clutch unit is controlled in accordance with the characteristic curve by means of the actuator. | 07-07-2011 |
| 20110184616 | METHOD FOR CONTROLLING THE TORQUE CONVERTER CLUTCH (TCC) PRESSURE DURING POWER DOWNSHIFT EVENTS - A method is provided for controlling the torque converter clutch (TCC) pressure during power downshift events. In order to provide a method for controlling the torque converter clutch (TCC) pressure during power downshift events, the present invention proposes that an inertia torque is computed at the beginning of the shift and that a pressure compensation is applied on the TCC during the downshift using the inertia torque. With such a pressure compensation it is possible to stay in regulation mode which improves both shift quality and fuel consumption. | 07-28-2011 |
| 20110190997 | METHOD FOR ACTUATING A CLUTCH OF A HYDRODYNAMIC TORQUE CONVERTER - A method of actuating a clutch of a hydrodynamic torque converter in a self-propelling working machine such that when the clutch is engaged and thereby connects a drive input of the hydrodynamic torque converter to a drive output of the hydrodynamic torque converter, and when a service brake is actuated, the clutch is disengaged thereby separating a drive input of the hydrodynamic torque converter from a drive output of the hydrodynamic torque converter. The method comprises the steps of, when the service brake is actuated, actuating the clutch in the engaging direction, and maintaining engagement of the clutch if a device for recognizing a driving status of the working machine detects that the working machine is driving downhill. | 08-04-2011 |
| 20110196589 | METHOD FOR COMPENSATING FOR VOLUME CHANGES OF AN HYDRAULIC FLUID IN AN HYDRAULIC ACTUATING DEVICE FOR ACTUATING A CLUTCH, AND HYDRAULIC ACTUATING DEVICE - In a method for compensating for volume changes of a hydraulic fluid in an actuating device used for actuating a clutch, which actuating device includes a master cylinder, an actuator connected to a piston of the master cylinder, and a slave cylinder hydraulically connected to the master cylinder for disengaging the clutch. The position of the piston of the master cylinder is corrected as a function of temperature and that the actuating device include an element for the temperature-dependent correction of the position of the piston of the master cylinder. | 08-11-2011 |
| 20110196590 | START CONTROL DEVICE OF POWER TRANSMISSION SYSTEM FOR VEHICLE AND START CONTROL METHOD - A start control device and a start control method of a vehicular power transmission system including a lock-up clutch and a start clutch are provided in which start-time lock-up slip control is performed, and neutral control is performed. When the start-time lock-up slip control is additionally executed during cancellation of the neutral control, the gradient of an output rotational speed of the hydraulic power transmission which is changed, through engagement of the start clutch, toward an input rotational speed of the automatic transmission at the time of completion of engagement of the start clutch is controlled, using at least one of a start clutch pressure that is increased so as to engage the start clutch, and a lock-up clutch pressure that is increased so as to bring the lock-up clutch into slip engagement. | 08-11-2011 |
| 20110208397 | STARTING-CLUTCH CONTROL APPARATUS - A starting-clutch control apparatus is configured to control connection between a driving side and a driven side of a vehicle using a starting clutch disposed therebetween. A driving-shaft rotation speed detector is configured to detect a rotation speed of a driving shaft of the starting clutch. A driven-shaft rotation speed detector is configured to detect a rotation speed of a driven shaft of the starting clutch. A cumulative work amount calculator is configured to calculate a cumulative work amount of the starting clutch based on pressure applied to the starting clutch, the rotation speed of the driving shaft, and the rotation speed of the driven shaft. A torque output restricting device is configured to restrict an output torque of a driving source of the vehicle when the starting clutch is in a transient engagement state and the cumulative work amount exceeds a first specific value. | 08-25-2011 |
| 20110238276 | POWER TRANSMISSION CONTROL APPARATUS FOR VEHICLE - First and second clutches correspond to systems which include “first gear” and “second gear,” respectively. When the temperature of the first clutch at the time of start of the vehicle is lower than a first temperature, only the first clutch is used as a start clutch for driving the vehicle. When the temperature of the first clutch is not lower than the first temperature but is lower than a second temperature, both the first and second clutches are used as the start clutch. When the temperature of the first clutch is equal to or higher than the second temperature, only the second clutch is used as the start clutch. Thus, the higher the temperature of the first clutch, the smaller the load acting on the first clutch. When the temperature of the second clutch is high, engine torque is reduced, and a warning is issued. | 09-29-2011 |
| 20110246037 | HYDRAULIC CONTROL APPARATUS FOR LOCKUP CLUTCH - A hydraulic pressure control apparatus for a lockup clutch of a fluid transmission device. In a spool of the lockup relay valve, switching to a position on an engaging side (right half position) for engaging a lockup clutch is achieved by a signal pressure being input from a linear solenoid valve to a hydraulic oil chamber, and switching to a position on a releasing side (left half position) for releasing the lockup clutch is achieved by an urging member such as a spring force of a spring. Since the response is low with the switching by the spring force, the state of a vehicle is sensed by a sensor and, if quick release of the lockup clutch is necessary, a signal pressure from a solenoid valve is input to a hydraulic oil chamber to apply the spring force, and assists with a hydraulic pressure, thereby switching the spool to the releasing side. Accordingly, the response when the lockup relay valve is switched from the engaging side to the releasing side is enhanced. | 10-06-2011 |
| 20110246038 | CORRECTION METHOD FOR A CLUTCH ACTUATOR CHARACTERISTIC - A method for correcting an actuator characteristic of a clutch actuator for a friction clutch of a vehicle transmission after the commissioning thereof. The actuator characteristic relates a first desired variable, such as a desired clutch pressure, to a second desired variable, such as an desired actuator current. The method comprises the steps: approaching a quasi-steady-state operating point of the friction clutch; detecting a deviation between the first desired variable and an actual variable of the friction clutch; and setting up a correction function for the actuator characteristic according to the deviation. | 10-06-2011 |
| 20110257857 | CONTROL SYSTEM AND METHOD FOR SYNCHRONIZATION CONTROL IN DUAL CLUTCH TRANSMISSIONS - A control system includes a pressure control solenoid and a flow control solenoid having an input in fluid communication with the pressure control solenoid. A piston adjusts a position of a shift fork and includes a first area in fluid communication with the pressure control solenoid and a second area in fluid communication with the flow control solenoid. A fork sensor senses a position of a shift fork. A slip sensing module estimates slip acceleration between an input shaft and a gear. A flow determining module generates a flow command for the flow control solenoid. A sync control module determines a slip acceleration profile including an estimated slip acceleration, adjusts the estimated slip acceleration based on the measured slip acceleration, and generates a pressure command for the pressure control solenoid based on the adjusted slip acceleration. | 10-20-2011 |
| 20110264344 | LOCKUP CLUTCH CONTROL APPARATUS AND LOCKUP CLUTCH CONTROL METHOD - A lockup clutch control apparatus controls slippage of a lockup clutch to a desired slippage by manipulating clutch engagement force of the lockup clutch, wherein an engine is provided with a supercharger, and a torque converter is disposed between the engine and an automatic transmission, and provided with the lockup clutch. The lockup clutch control apparatus includes a controller configured to: set the clutch engagement force based on a measured value of torque inputted to the lockup clutch; determine whether the engine is operating in a predetermined supercharger lag region in which the measured value deviates from an actual value of the torque; and perform a first operation of correcting the clutch engagement force by reducing the clutch engagement force in response to determination that the engine is operating in the supercharger lag region. | 10-27-2011 |
| 20110282557 | DRIVE STATE CONTROL APPARATUS FOR VEHICLE - An on-demand-type drive state control apparatus for a vehicle is provided. In the case where acceleration slippage occurs at drive wheels (rear wheels) of a vehicle when a drive system is in a two-wheel drive state, the drive system is switched from the two-wheel drive state to a four-wheel drive state. That is, the maximum transmittable torque of a multi-disc clutch mechanism increases from “0” to a predetermined value. In the four-wheel drive state, the maximum transmittable torque decreases stepwise from the present value by a predetermined value every time the vehicle travels over a predetermined distance in a state in which none of the wheels cause acceleration slippages. That is the clutch drive current supplied to the multi-disc clutch mechanism decreases gradually (stepwise or in a plurality of steps), and the drive torque distributed to the front wheels (rear wheels) decreases (increases) gradually. | 11-17-2011 |
| 20110288735 | Producing Vehicle Creep Through a Transmission Without a Torque Converter - A method for controlling creep in a vehicle having no transmission torque converter, includes operating an input clutch of the transmission at a desired clutch torque capacity, using a feed-forward engine torque to minimize the impact on the engine speed when additional load on the engine occurs from increasing the clutch torque capacity, producing a desired clutch slip by controlling engine idle speed, and achieving a desired vehicle speed by controlling the input clutch torque capacity. | 11-24-2011 |
| 20120010795 | Clutch Release System and Method for Operating a Clutch Release System - A method operates a clutch release system of a vehicle having an electrically actuable clutch release unit including a sensor for detecting a position of a release piston, a control unit for controlling the release piston as a function of a detected position of a clutch actuating device, and a sensor for detecting the position of the clutch actuating device. A characteristic curve function describes a relationship between the position of the clutch actuating device and the position of the release piston. The function is taken into consideration during actuation of the clutch release system to obtain a consistent clutch release at a defined position of the clutch actuating device despite progressive wear of the clutch release system. | 01-12-2012 |
| 20120016561 | METHOD FOR CONTROLLING A TORQUE TRANSMITTING DEVICE WITH LEARNING FUNCTION - Apparatus (control device) and a method for controlling a torque transmitting device such as a brake, wet clutch, dry clutch ( | 01-19-2012 |
| 20120041658 | SYSTEM AND METHOD FOR DETERMINING A STEERING ANGLE FOR A VEHICLE AND SYSTEM AND METHOD FOR CONTROLLING A VEHICLE BASED ON SAME - A system for determining an angular position of a steerable wheel of a vehicle can include a plurality of sensors and a controller in electrical communication with each of these sensors. The controller can be configured to compare a first data set and a second data set to respective straight path conditions, wherein the first data set includes data from a first set of the sensors and the second data includes data from a second set of the sensors. The controller can be configured to determine a substantially straight path of travel condition when the comparison of at least one of the first data set and the second data set satisfies the respective straight path conditions, and can then associate that data acquired from the steering angle sensor(s) with a neutral position. | 02-16-2012 |
| 20120109477 | Dual Clutch Driveline Twist Control - A method for controlling a driveline having a transmission clutch includes locking the clutch before a driveline lash crossing occurs; maintaining a locked clutch during the lash crossing; after the lash crossing occurs, increasing a clutch capacity at a slower rate than a driveline twist torque rate; and after the lash crossing occurs, producing clutch slip by controlling engine torque and clutch capacity such that engine torque exceeds clutch capacity. | 05-03-2012 |
| 20120109478 | HYDRAULIC CONTROL APPARATUS FOR VEHICLE - The hydraulic control apparatus calculates a target engagement hydraulic pressure of a frictional engagement element, controls the frictional engagement element so that a revolution speed at a driving source side of the frictional engagement element is higher than a revolution speed at a driving wheel side of the frictional engagement element, outputs a command current to a solenoid valve on the basis of a map having a relationship between the target engagement hydraulic pressure and the command current, and decreases the engagement hydraulic pressure when a vehicle speed is equal to or less than a predetermined vehicle speed at which the vehicle is judged to be vehicle stop during execution of the slip control. Further, the hydraulic control apparatus corrects the map so that a variation of the command current with respect to a variation of the target engagement hydraulic pressure is small when decreasing the engagement hydraulic pressure. | 05-03-2012 |
| 20120143453 | LOCK-UP DEVICE AND CONTROL METHOD FOR LOCK-UP DEVICE - A lock-up device supplies hydraulic pressure to a lock-up clutch when lock-up capacity becomes insufficient with increasing accelerator operation amount during slip control. The lock-up device (1) sets a hydraulic unit pressure command value corresponding to drive source torque so rotational speed difference becomes target slip speed when a variation in accelerator operation amount is in a predefined range, and deriving an estimated drive source output torque corresponding to the accelerator operation amount to set the pressure command value corresponding to the estimated drive source torque so the rotational speed difference becomes target slip speed when accelerator operation amount variation exceeds the range's upper limit, and (2) controls the hydraulic unit to supply hydraulic pressure corresponding to hydraulic pressure command value to the lock-up clutch. | 06-07-2012 |
| 20120158265 | METHOD AND SYSTEM FOR OPENING OF A CLUTCH - A method for opening of an automatically controlled clutch ( | 06-21-2012 |
| 20120191310 | CLUTCH CAPACITY DETECTION SYSTEMS AND METHODS - A system for a vehicle includes a desired pressure module, a valve actuation module, a filter module, and a capacity detection module. The desired pressure module selectively generates an increase in a desired pressure of hydraulic fluid for a clutch of an automatic transmission. The valve actuation module actuates a solenoid valve based on the desired pressure. The solenoid valve supplies hydraulic fluid to a regulator valve, and the regulator valve supplies hydraulic fluid to the clutch. The filter module filters an acceleration of a shaft of the automatic transmission to generate a filtered acceleration. The capacity detection module indicates whether the clutch reached torque carrying capacity based on the filtered acceleration. | 07-26-2012 |
| 20120259522 | START CLUTCH CONTROL DEVICE - A first torque determining unit determines a value of a torque input to a transmission on the basis of a load acting on a start clutch ( | 10-11-2012 |
| 20120316742 | METHOD FOR CONTROLLING A FRICTION CLUTCH - The invention relates to a method for controlling a friction clutch, or two friction clutches provided in a double clutch transmission, for transmitting torque provided by an internal combustion engine to a transmission in a motor vehicle. A clutch actuator friction locks friction linings of the friction clutch in an operating mode by specifying an actuation path to transmit the torque provided by the internal combustion engine and to compensate for an extended additional path in the friction clutch from the wear of the friction linings in that the clutch actuator specifies the extended shift travel in comparison to the actuation path, wherein an adjusting process is triggered with compensation for the additional path when wear of the friction clutch exists. To regularly execute in the adjusting process, it is proposed to initiate the shifting path depending on a distance traveled by the motor vehicle since a previous adjusting process. | 12-13-2012 |
| 20130006489 | METHOD AND SYSTEM OF CONTROLLING A POWERTRAIN FOR HYBRID VEHICLE - A method and a system of controlling a powertrain for a hybrid vehicle which is configured to start an engine and use power from the engine even though a starting motor has failed. More specifically, a controller is configured to determine whether the starting motor has failed or not and if the starting motor has failed, a first clutch is engaged to lock a first planetary gear set to start the engine with power from the drive motor. Furthermore, while operating the vehicle, power may be supplied from just the drive motor, just the engine or both even when the starting motor has failed. | 01-03-2013 |
| 20130066530 | METHOD FOR ADAPTING A CONTACT POINT OF A CLUTCH IN A DRIVETRAIN OF A MOTOR VEHICLE - A method for adapting a contact point of a clutch in a drivetrain of a motor vehicle, wherein the clutch is moved by an actuator and the influence of the movement of the clutch on a rotating electric motor is evaluated. A method that is simple and quick to carry out, a clutch torque and/or an actuator path close to the contact point is obtained from a characteristic curve of the clutch representing the relationship of an actuator path to a clutch torque and is set at the clutch. Subsequently the associated actuator path and/or the clutch torque is measured from the clutch influenced by the actively operated electric motor, where the clutch torque read from the characteristic curve and the actuator path measured at the clutch and/or the actuator path obtained from the characteristic curve and the measured clutch torque form the current contact point position of the clutch. | 03-14-2013 |
| 20130096793 | PRIMARY CLUTCH ELECTRONIC CVT - A continuously variable transmission (CVT) is provided for use on a recreational or utility vehicle. The CVT is electronically controlled by at least one control unit of the vehicle. The CVT includes a primary clutch having a first sheave and a second sheave moveable relative to the first sheave. An actuator controls movement of the second sheave. | 04-18-2013 |
| 20130103275 | COASTING CONTROL DEVICE - A coasting control device for reducing uneasiness experienced by a driver when pressing a clutch pedal during coasting control. The device includes a clutch control unit that, when the clutch pedal is pressed during coasting control, controls an actuator to cause an amount of hydraulic oil that depends on the amount of depression of the clutch pedal to be ejected from a clutch-free operating cylinder. | 04-25-2013 |
| 20130116903 | Method for Operating a Vehicle Powertrain - A method of operating a vehicle powertrain, includes: sensing a vehicle speed; selecting a plurality of control strategies; activating one of the plurality of control strategies, the control strategy including: (i) operating the vehicle in a stationary start-stop mode when the vehicle speed is below a first threshold; and (ii) operating the vehicle in a rolling stationary start-stop mode when the vehicle speed is above the first threshold but below a second threshold. | 05-09-2013 |
| 20130151100 | ACTUATOR COMPENSATION SYSTEM FOR CLUTCH AND METHOD THEREOF - A compensation method of an actuator system for a clutch may compensate initial operating position of an actuator that may be changed due to abrasion so that may maintain stroke distance of a clutch stable. The compensation method includes determining a target pressure if operating requirement of a clutch is detected and operating an actuator according to the target pressure, determining whether operating movement of the actuator is strayed from a predetermined value if operating pressure of the actuator reaches the target pressure, determining error of initial operating position of the actuator if the operating movement of the actuator is strayed from the predetermined value and determining compensating ratio according to the detected position deviation of the error and compensates the initial operating position of the actuator by controlling a lead screw of the actuator according to the determined compensating ratio. | 06-13-2013 |
| 20130158824 | LIMITING BRANCH PRESSURE TO A SOLENOID VALVE IN A FLUID CIRCUIT - A vehicle includes a clutch, pump, pressure control variable force solenoid (PVFS) valve in a branch supplying oil from the pump to the clutch through a flow control VFS (QVFS), and a controller. The controller calculates an area of a variable orifice of the QVFS valve at the start of a clutch shift, records the area as a maximum area, and calculates a maximum branch pressure as a function of the area. The controller limits pressure in the branch during the shift event to the calculated maximum branch pressure. The transmission may be a dual-clutch transmission (DCT) with the clutch being a DCT input clutch. A control system includes a host machine, temperature and pressure sensors, a computer-readable medium with instructions for limiting branch pressure as a function of the maximum area noted above and using sensor values from the sensors. A method of limiting branch pressure is also disclosed. | 06-20-2013 |
| 20130158825 | METHOD AND DEVICE FOR DETERMINATION A TOUCH POINT OF A FRICTION CLUTCH - A method of determining a touch-point of a friction clutch of a motor vehicle that is relevant for control purposes such that a current, actual touch-point of the friction clutch is determined adaptively, and such that the current touch-point is modified, with a correction value that depends on the elasticity of the friction clutch, in order to determine the control-relevant touch-point. The control device comprises elements for carrying out the method. | 06-20-2013 |
| 20130190997 | SPEED CONTROL APPARATUS AND PROGRAM FOR SPEED CONTROL APPARATUS; AND AUTOMATIC VEHICLE DRIVING APPARATUS, ENGINE DYNAMO CONTROL APPARATUS, AND CONTROL PROGRAMS USED FOR RESPECTIVE APPARATUSES - In order to further improve followability of an actual vehicle speed with respect to a commanded vehicle speed at a starting time point, the present invention is provided with a vehicle speed control part that, a predetermined time before the starting time point that is a time when the commanded vehicle speed rises from zero, sets a clutch position of a vehicle to an initial intermediate position where power is partially transmitted, and at and during a certain period of time after the starting time point, performs clutch feedback control that changes the clutch position depending on a deviation between the actual vehicle speed and the commanded vehicle speed so as to make the actual vehicle speed follow the commanded vehicle speed, wherein the vehicle speed control part sets the initial intermediate position depending on rising commanded acceleration that is a time rate of change at the time when a value of the commanded vehicle speed rises from zero. | 07-25-2013 |
| 20130190998 | ENTERING AND LEAVING A MOTOR VEHICLE FREEWHEEL RUNNING CONDITION WITH INTERNAL COMBUSTION ENGINE OFF - An automotive electronic control system for a motor vehicle is provided. The automotive electronic control system is designed to cause the motor vehicle to enter a freewheel running condition with internal combustion engine off if the automotive electronic control system determines, based on received quantities indicative of operative conditions of the motor vehicle, occurrence of a driver-performable action indicative of the will of the driver to enter a freewheel running condition with internal combustion engine off and occurrence at or within a given time from the occurrence of the driver-performable action and the maintaining for a given time of specific predetermined entry conditions. The automotive electronic control system is further designed to cause the motor vehicle to leave a freewheel running condition with internal combustion engine off if the automotive electronic control system determines, based on the received quantities, occurrence of at least one of specific predetermined exit conditions. | 07-25-2013 |
| 20130197769 | METHOD FOR CONTROLLING SHIFTS IN A VEHICLE TRANSMISSION - A method of controlling shifts in a vehicle transmission, for example a utility vehicle, having a transmission or partial transmission designed as a dual-clutch transmission that shifts as a without traction force interruption. The transmission comprises a dual clutch having a first clutch and a second clutch that are functionally connected to a drive engine, and a transmission or partial transmission comprises a main transmission that shifts with traction force interruption and is connected to a drive-train downstream from the dual-clutch transmission. During shifts in the main transmission that is connected downstream from the dual-clutch transmission, the dual clutch is operated, by pre-loading the two clutches, as a transmission brake and/or an engine brake for adapting the speed of components to be shifted so as to enable short shifting times and ensure comfortable and reliable driving operation. | 08-01-2013 |
| 20130231834 | TRANSMISSIOIN CLUTCH RETURN SPRING PRESSURE LEARN USING PID CONTROL - A method for determining the return spring pressure of a clutch in a vehicle transmission includes using proportion-integral-derivative (PID) control logic of a controller to introduce a calibrated error into a pressure command of a holding clutch during a coast-down maneuver of the vehicle. The calibrated error causes a slip level to occur across the holding clutch. The method includes maintaining the slip level using the PID control logic and separately commanding engine torque at different threshold low values during the coast-down maneuver. The pressure/input torque relationship for the holding clutch is recorded for both threshold low levels as the controller continues to maintain the slip. The return spring pressure is calculated using the recorded pressure/input torque relationship. The holding clutch may be controlled a subsequent shift maneuver using the learned return spring pressure. A vehicle is also disclosed having a controller configured to execute steps of the method. | 09-05-2013 |
| 20130231835 | DETERMINATION OF TRANSMISSION CLUTCH CONTROL VALUES USING PID CONTROL LOGIC DURING POWER-ON UPSHIFT - Clutch control values are determined via a method in a vehicle during a power-on upshift. Pressure to an offgoing clutch is decreased to a calibrated holding pressure after onset of the upshift. Proportional-integral-derivative (PID) logic of a controller is used to introduce a calibrated error into a pressure command to the offgoing clutch during fill of the oncoming clutch. This causes a calibrated slip to occur across the offgoing clutch, and a resultant threshold amount of flare to occur in turbine speed. The slip and flare are held using the PID logic. The pressure/torque relationship of the offgoing clutch is recorded. A fill level of the oncoming clutch is determined using a trajectory of an integrator term of the PID logic. A control value of the oncoming or the offgoing clutch is adjusted using at least one of the fill level, the recorded clutch pressure, and the recorded clutch torque. | 09-05-2013 |
| 20130231836 | Apparatus, Method and Computer Program for Actuating a Disconnect Clutch - An apparatus, method and computer for actuating a disconnect clutch which is arranged between a first drive unit and a second drive unit of a hybrid drive and which can be actuated by means of a hydraulic actuating element in order to couple or decouple the first drive unit to or from the rest of a powertrain. This is accomplished by adapting a transmission hydraulic pressure level to a disconnect clutch hydraulic pressure level required for actuating the disconnect clutch by a pressure converter arranged between the actuating element and a hydraulic medium supply for a transmission. | 09-05-2013 |
| 20130238204 | METHOD FOR OPERATING A VEHICLE POWERTRAIN - Methods and systems for controlling a vehicle powertrain that may be automatically stopped and started are presented. In one example, a method adjusts a position of a transmission clutch in response to battery current during engine cranking. The method may reduce clutch wear and improve vehicle launch from a stop. | 09-12-2013 |
| 20130275017 | VEHICLE CLUTCH CONTROL METHOD - A vehicle has an engine having a crankshaft, a hydraulically controlled multi-plate clutch operatively connected to the crankshaft, and an output shaft operatively connected to the clutch. The clutch selectively transmits power from the crankshaft to the output shaft. A propulsion element is operatively connected to the output shaft. A hydraulic fluid supply system is fluidly connected to the clutch for supplying pressurized hydraulic fluid to the clutch. A controller is connected to the hydraulic fluid supply system. The controller receives a torque signal indicative of engine torque and controls the hydraulic fluid supply system based at least in part on the torque signal. A clutch control method and system are also disclosed. | 10-17-2013 |
| 20130304339 | Device and Method for Controlling Transmission Torque to Provide Hill Ascent and/or Descent Assistance - A device, system, and method for controlling transmission torque to provide hill ascent and/or descent assistance to a vehicle includes applying a clutch hold pressure to one or more clutches of a transmission to lock an output shaft of the transmission to resist roll-back of the vehicle. The clutch hold pressure is applied based on one or more of a transmission output speed signal, an engine throttle signal, and a vehicle brake signal. | 11-14-2013 |
| 20130304340 | Device, System, and Method for Controlling Transmission Torque to Provide Hill Ascent and/or Descent Assistance Using Road Grade - A device, system, and method for controlling transmission torque to provide hill ascent and/or descent assistance to a vehicle includes applying a clutch hold pressure to one or more clutches of a transmission to lock an output shaft of the transmission to resist roll-back of the vehicle. The clutch hold pressure is determined as a function of the tractive effort of the vehicle and is applied based on one or more of a transmission output speed signal, an engine throttle signal, and a vehicle brake signal. | 11-14-2013 |
| 20130317717 | ELECTRO-HYDRAULIC CLUTCH SYSTEM - An electro-hydraulic clutch system for a motor vehicle includes a clutch mechanism that selectively engages an engine of the motor vehicle with a gear box, an actuator that pumps and retrieves hydraulic fluid to and from the clutch mechanism to activate the clutch mechanism, and a solenoid with a valve and/or a check ball that is disposed in the path of the hydraulic fluid between the actuator and the clutch mechanism. The solenoid has a normally closed position to prevent flow of the hydraulic fluid back to the actuator in the event of a system failure. The solenoid can also be used to reduce energy consumption in steady state conditions. | 11-28-2013 |
| 20130338893 | MULTI-PLEXING CLUTCH LOGIC CONTROL OF A MULTI-MODE TRANSMISSION - A transmission includes an electro-hydraulic controller that includes redundancy in the hydraulic circuit that permits single fault failures to be compensated for by changing the flow path of hydraulic fluid to bypass the single fault failure. The redundancy results in the ability of the transmission to maintain full operation in all modes. | 12-19-2013 |
| 20130345943 | Control for Torque Converter Having Multiple Selectively Engageable Converter Couplers - An apparatus and method of controlling a torque transmitting apparatus having multiple selectively engageable couplers is provided. The multiple couplers may be selectively engaged and disengaged to provide a mechanical, friction or fluid coupling between portions of the torque transmitting apparatus and other components of a vehicle powertrain during various operational stages. The control apparatus includes a fluid pressure control device and a fluid flow control device. | 12-26-2013 |
| 20140012473 | CLUTCH ARRANGEMENT FOR A GEARBOX AND METHOD TO CONTROL A SEPARATING CLUTCH - A clutch arrangement for a transmission which comprises a wet separating clutch having a clutch housing, in which a clutch piston separates an interior space from a pressure chamber. The separating clutch is engaged by pressurizing the pressure chamber with an actuating pressure so that the clutch piston moves into an actuation position and, as a result, two clutch halves, located in the interior space and surrounded by fluid, frictionally engage one another. So as to reliably engage the separating clutch without impairing the surrounding components with the fluid, the actuating pressure includes at least one compensation pressure portion that corresponds to the counter pressure depending on the fluid located in the interior space opposing the clutch piston during transfer into the actuation position. A method of controlling a separating clutch, and a computer program product and a data medium incorporating the computer program product are also disclosed. | 01-09-2014 |
| 20140012474 | METHOD FOR CONTROLLING AN ELECTROMECHANICAL CLUTCH SYSTEM IN A MOTOR VEHICLE - A method is provided for controlling an electromechanical clutch system in a motor vehicle. The motor vehicle includes, but is not limited to a clutch and a clutch pedal uncoupled mechanically from the clutch. The system is configured to determine a gear input rotation speed (nG), determine a pedal travel (w) covered by the clutch pedal, compare a maximum rotation speed (nmax) of the engine with the gear input rotation speed (nG), actuate the clutch independently of the pedal travel (w), when the gear input rotation speed (nG) is greater than the maximum rotation speed (nmax) of the engine, and the pedal travel (w) is so small that an actuation of the clutch ( | 01-09-2014 |
| 20140046563 | VEHICLE - A vehicle includes a cruise control section arranged and programmed to perform control to maintain the vehicle speed at a prescribed vehicle speed while a clutch is engaged. A clutch actuator control section performs control to disengage the clutch when the value of a parameter becomes equal to or lower than a first threshold value, in the case where the cruise control section is determined to not be performing the control to maintain the vehicle speed at a prescribed vehicle speed; and performs the control to disengage the clutch when the value of the parameter becomes equal to or lower than a second threshold value, which is lower than the first threshold value, in the case where the cruise control section is determined to be performing the control to maintain the vehicle speed at a prescribed vehicle speed. | 02-13-2014 |
| 20140095039 | TWIN CLUTCH CONTROLLING APPARATUS - A twin clutch controlling apparatus including a shift motor for carrying out a smooth changeover of a shift stage of a multi-speed transmission having a plurality of gear trains between a main shaft and a countershaft, a twin clutch configured from an odd number stage side clutch and an even number stage side clutch, a clutch actuator for controlling the twin clutch, and a manual operation clutch capacity arithmetic operation section for arithmetically operating, based on an operational amount of a clutch lever, a manual operation clutch capacity arithmetic operation value (tqc1tmt) corresponding to the manual operation. The twin clutch controlling apparatus further includes a manual operation clutch decision section for determining with a clutch capacity of which one of the odd number stage side clutch or the even number stage side clutch the manual operation clutch capacity arithmetic operation value (tqc1tmt) is to be interlocked. | 04-03-2014 |
| 20140095040 | TWIN CLUTCH CONTROLLING APPARATUS - A twin clutch controlling apparatus wherein a clutch lever is operated during a deceleration operation in which an auto mode (Auto) is selected, then a shift down action from a gear position “N-2” at which a driving force can be transmitted only by one of an odd number stage side clutch CL | 04-03-2014 |
| 20140095041 | TWIN CLUTCH CONTROLLING APPARATUS - A twin clutch controlling apparatus wherein an interposition of a manual operation into an automatic control clutch can be executed smoothly. The twin clutch controlling apparatus includes an AMT controlling unit for controlling a shift actuator and a clutch actuator, and a shift pedal P for carrying out a shifting request to the AMT controlling unit. If, after driving of the shift actuator is started in response to the shifting request by the shift pedal, a clutch lever is operated in a connection direction before a next stage gear is placed into an in-gear state, then the controlling section drives one of an odd number stage side clutch and an even number stage side clutch which corresponds to the gear before the shifting in a corresponding relationship to a manual operation clutch capacity arithmetic operation value. | 04-03-2014 |
| 20140100748 | System and Method for Controlling Hydraulic Pressure of Damper Clutch - A method for controlling hydraulic pressure of a damper clutch may include determining a hydraulic pressure control mode of the damper clutch in accordance with vehicle driving conditions and a state of the damper clutch, determining a hydraulic pressure control value according to the hydraulic pressure control mode, determining target waveforms of engine rotation speed and turbine rotation speed according to the hydraulic pressure control mode, detecting a waveform of the engine rotation speed and a waveform of the turbine rotation speed, judging whether detected waveforms of the engine rotation speed and the turbine rotation speed correspond with the target waveforms thereof respectively, and, regulating the hydraulic pressure control value so as to make the detected waveforms of the engine rotation speed and the turbine rotation speed correspond with the target waveforms of the engine rotation speed and the turbine rotation speed respectively. | 04-10-2014 |
| 20140100749 | SYSTEM FOR CONTROLLING TORQUE CONVERTER TEMPERATURE DURING TORQUE CONVERTER STALL CONDITIONS - A method and system are provided for controlling the operating temperature of a torque converter during torque converter stall conditions. The torque converter has a pump rotatably driven by an internal combustion engine and a rotatable turbine fluidly coupled to the pump. The system first determines whether the torque converter is currently in a torque converter stall condition, and, if so, determines a slip speed as a difference in rotational speeds between the pump and the turbine, determines an engine output torque limit as a function of the slip speed and a desired slip speed, and controls the operating temperature of the torque converter by limiting output torque produced by the engine based on the engine output torque limit. | 04-10-2014 |
| 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 |
| 20140129104 | METHOD AND SYSTEM FOR LEARNING OPERATION OF ENGINE CLUTCH OF HYBRID VEHICLE - A method and a system of learning an operation of an engine clutch using a hydraulic pressure sensor and a motor of a vehicle. The method includes determining, by a controller, whether power transmission of a transmission that transmits output from the engine and the motor has been interrupted and increasing, by the controller, pressure of the engine clutch to a target pressure with a predetermined ratio when the power transmission has been interrupted. In addition, measuring, by the controller, actual pressure of the engine clutch using a hydraulic pressure sensor when pressure of the engine is increased with the predetermined ratio to the target pressure and calculating, by the controller, a difference value between the measured actual pressure and target pressure. Furthermore, adjusting, by the controller, pressure of the engine clutch to correlate the actual pressure of the engine clutch to the target pressure based on the difference value. | 05-08-2014 |
| 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 |
| 20140136067 | METHOD FOR CONTROLLING AN AUTOMATED FRICTION CLUTCH - A method of controlling an automated friction clutch arranged as a starting and shifting clutch in a vehicle between an engine driveshaft and an input shaft of a transmission. The clutch can be engaged passively by a contact pressure spring and disengaged and engaged by a pneumatic control cylinder. The air inlet and outlet valves are opened in a sustained-pulse operating mode, over a duration Δt | 05-15-2014 |
| 20140142824 | APPARATUS AND METHOD FOR CONTROLLING DAMPER CLUTCH OF AUTOMATIC TRANSMISSION VEHICLE - A method of controlling a damper clutch of a turbocharger mounted automatic transmission vehicle secures stable boost pressure to provide accelerating feeling is disclosed. The method may include detecting driving information from a turbocharger mounted vehicle to determine whether lock up conditions of a damper clutch are satisfied, determining an engine load by a gear shift stage and an engine speed when the lock up conditions of the damper clutch are satisfied, detecting supplied boost pressure to determine whether conditions of the engine load are satisfied, and canceling the lock up of the damper clutch for accelerating feeling when the boost pressure does not satisfy the conditions of the engine load. | 05-22-2014 |
| 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 |
| 20140163831 | DRIVING FORCE TRANSMISSION CONTROL APPARATUS - A driving force transmission control apparatus includes a multiple disc clutch including a plurality of outer clutch plates, and a plurality of inner clutch plates; a pressing mechanism that presses the multiple disc clutch; and a control portion that controls the pressing mechanism. The outer clutch plates and inner clutch plates are engaged with an intermediate shaft and an inner shaft respectively. The control portion makes a determination as to whether the multiple disc clutch is in a first operating condition in which the multiple disc clutch is pressed with a relative rotation speed between the intermediate and the inner shafts being equal to or higher than a predetermined value, or in a second operating condition in which the multiple disc clutch is pressed with the relative rotation speed being lower than the predetermined value, and the control portion controls the pressing mechanism based on a result of the determination. | 06-12-2014 |
| 20140172257 | VEHICLE CONTROL DEVICE - A vehicle control device includes an engine and a clutch configured to connect and disconnect a power transmission path between the engine and a drive wheel according to a supplied hydraulic pressure. The vehicle control device is configured to carry out neutral control that controls the hydraulic pressure supplied to the clutch to an N control study value for placing the clutch in a semi-engaged state while a vehicle stops and inertia control (free-run control, deceleration eco-run control, and N inertia control) that carries out an inertia travelling by releasing the clutch while the vehicle travels. At the time that the inertia control is executed, the vehicle control device controls the hydraulic pressure supplied to the clutch to the same value as the N control study value. | 06-19-2014 |
| 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 |
| 20140188358 | CLUTCH ASSEMBLY FOR ELECTRIC 4-WHEEL DRIVE SYSTEM AND METHOD OF CONTROLLING THE SAME - A clutch assembly is provided for an electric 4-wheel drive system. The clutch assembly selectively blocks power delivered from a drive element of a motor to a driven element of a rear wheel and includes a one-way clutch movably installed between the drive element and the driven element, a fork member movably installed in a clutch housing and brought into sliding contact with the external circumference of the one-way clutch, and an actuator installed in the clutch housing and configured to provide forward working force and backward working force to the fork member. | 07-03-2014 |
| 20140200780 | ATTITUDE CONTROLLER AND SADDLE RIDING TYPE VEHICLE HAVING THE SAME - An attitude controller eliminates a skid motion of a banked vehicle when travelling through a curve. The attitude controller includes a lateral acceleration sensor that obtains lateral acceleration, as rightward or leftward accelerations, acting on a vehicle of a motorcycle, a bank angle detector that detects a bank angle of the vehicle, and a longitudinal force controller that decreases, independently of each of the wheels, an absolute value of a longitudinal force as the sum of forward and backward forces acting on front and rear wheels based on the obtained lateral acceleration and the detected bank angle. | 07-17-2014 |
| 20140200781 | VEHICLE CONTROL SYSTEM - A vehicle control system includes an internal combustion engine capable of switching an operating state and a non-operating state while a vehicle travels, an engaging device capable of switching an engaged state in which the internal combustion engine is engaged with a driving wheel so that a power can be transmitted therebetween and a release state in which the engagement is released, and a controller configured to control the internal combustion engine and the engaging device based on a vehicle speed parameter as to a traveling speed of the vehicle and a determination parameter different from the vehicle speed parameter, place the engaging device in a release state at the time stop permission conditions of the internal combustion engine as to the determination parameter have been established while the vehicle travels at deceleration. | 07-17-2014 |
| 20140207350 | Method Of Calibration Of A Hydraulically Operated Clutch Of A Continuously Variable Transmission Using Pressure Between A Hydrostatic Pump And Motor - A method of calibrating a hydraulically operated clutch in a continuously variable transmission of a vehicle, includes steps of filling the clutch as if for a shift, using a control signal value for achieving a test pressure, and determining a resulting change in a pressure condition in a hydrostatic power unit of the transmission. If the change indicates initial engagement, then a value representative of the signal value used is recorded. If greater than initial engagement is indicated, or the vehicle moved, then the clutch is emptied and tested using a lower test pressure. If initial engagement is not indicated, the clutch is emptied and refilled to a greater test pressure. An exemplary pressure condition is a difference in pressure in lines between a pump and motor of the power unit. During the calibration, the vehicle can be held stationary with a parking brake or the like. | 07-24-2014 |
| 20140222305 | DEVICE AND METHOD FOR REGULATING A DUAL-CLUTCH TRANSMISSION FOR ACHIEVING A SAFE STATE - A device and method for regulating a hydraulically or electromechanically actuated dual-clutch transmission in a motor vehicle. A main computer selects a separate hardware unit in the emergency mode. A monitoring unit monitors the main computer and also selects the separate hardware unit in the emergency mode. At least one clutch is closed by spring force when in a depressurised state. A control unit controls a clutch actuator for actuating the clutch or for controlling a transmission actuator for providing different speeds of the dual-clutch transmission. In case of error, the safe state of an open drivetrain can be achieved by the separate hardware unit by the first control unit selecting the clutch actuator and the clutch actuator opening the at least one normally closed clutch, or by the second control unit selecting the hydraulic transmission actuator and the hydraulic transmission actuator placing the dual-clutch transmission in the neutral position. | 08-07-2014 |
| 20140236442 | DEVICE AND METHOD FOR CONTROL OF A MOTOR VEHICLE'S PROPULSION - A method, a device and a computer program for control of a motor vehicle's propulsion. When a clutch torque (Req T) is demanded by a driver activating of an accelerator pedal, the degree of closure (G) of the vehicle's clutch actuator is controlled by feedback on the basis of a monitored engine torque. There is at least one further consumer ( | 08-21-2014 |
| 20140249728 | MONOTONIC COUPLING ASSEMBLY ENGAGEMENT - A system, computer-implemented method, and computer program product are provided for a monotonic coupling assembly engagement. A coupling assembly actuation force output is increased to a coupling assembly associated with a rotary power source and a piece of driven equipment. A determination is made whether a power source process variable associated with the rotary power source drops below a pause threshold. A current coupling assembly actuation force output is maintained to the coupling assembly in response to a determination that the power source process variable drops below the pause threshold. A determination is made whether the power source process variable rises above a resume threshold. The coupling assembly actuation force output is increased to the coupling assembly in response to a determination that the power source process variable rises above the resume threshold. | 09-04-2014 |
| 20140257657 | METHOD AND SYSTEM FOR CONTROLLING A POWER TRAIN DEPENDING ON THE TEMPERATURE OF A HYDRAULIC TORQUE CONVERTER - A system for controlling a power train of a motor vehicle, the power train configured to deliver an engine torque to a hydraulic torque converter. The control system includes a mechanism determining a temperature gradient of oil of the hydraulic torque converter, a mechanism estimating a curve of force of resistance to forward travel of the motor vehicle depending on a practical mass of the motor vehicle based on the temperature gradient, and a controller controlling the engine torque depending on the estimation. | 09-11-2014 |
| 20140277977 | SYSTEM AND METHOD OF EXECUTING A DOUBLE TRANSITION SHIFT IN A TRANSMISSION WITH TRANSITIONING CLUTCH HAVING OPPOSITE CLUTCH SLIP AND TORQUE CARRYING DIRECTIONS - A method of executing a double transition shift in a transmission includes determining via a controller that one of four clutches involved in the shift has a clutch slip direction relative to input member rotation direction in one of the current gear and the commanded gear and an opposite clutch torque direction relative to input member torque direction in the other of the current gear and the commanded gear. The controller then calculates clutch torques for at least some of the offgoing clutches and at least some of the oncoming clutches, and controls torque at the offgoing clutches and the oncoming clutches during the shift according to the calculated clutch torques to ensure that the clutch with the opposite slip and torque directions does not provide reaction torque during the shift unless clutch slip across said one of the four clutches is zero or in the clutch torque direction. | 09-18-2014 |
| 20140277978 | APPARATUS AND METHOD FOR LEARNING FILLING PARAMETERS FOR A CLUTCH - A method and a device for calibrating a wet clutch is provided. The clutch comprises a pump, a piston, a proportional valve, a controller, and a pressure sensor. The method comprises the steps of closing the clutch by sending a pressure profile with fill parameters from the controller to the proportional valve, recording a pressure signal of the hydraulic fluid, comparing the pressure profile with the pressure signal, determining whether at least one defined feature is in the pressure signal that is indicative of errors in the fill parameters, and if said feature is determined in the pressure signal, modification of the pressure profile by changing at least one of the fill parameters. | 09-18-2014 |
| 20140297144 | ELECTRICAL LOAD CONTROL DEVICE, ABNORMALITY DETERMINATION METHOD, AND ABNORMALITY DETERMINATION PROGRAM - A microcomputer of a driving force distribution control device detects a maximum current value among values of an upper current acquired during a predetermined period, and determines that an overcurrent abnormality has occurred in the driving force distribution control device when the maximum current value is equal to or larger than an abnormal current threshold value and a time, for which the maximum current value is equal to or larger than the abnormal current threshold value, is equal to or larger than an abnormality detection time. Then, the microcomputer performs off control to turn off a relay, and notifies a driver of occurrence of the overcurrent abnormality using a notification unit. | 10-02-2014 |
| 20140309899 | CLUTCH SLIP IDENTIFICATION SYSTEMS AND METHODS - A control system for a transmission of a vehicle includes a first angular rotation module, a second angular rotation module, and a slip module. The first angular rotation module determines a first angular rotation of a first component of the transmission during a predetermined period based on a first signal generated by a first sensor. The second angular rotation module determines a second angular rotation of a second component of the vehicle during the predetermined period based on a second signal generated by a second sensor. The slip module selectively indicates that a clutch of the transmission is slipping based on the first angular rotation and the second angular rotation. | 10-16-2014 |
| 20140324308 | CONTROL OF A TRANSMISSION FRICTION ELEMENT USING AN ADAPTIVE TRANSFER FUNCTION - A transmission clutch control method includes defining a transfer function relating clutch torque to a control signal under transmission operating conditions; determining a target clutch torque for current operating conditions; determining the target control signal from the transfer function to produce target torque at the clutch; correcting clutch torque on the basis of a difference between the target clutch torque and the actual torque at the clutch by adjusting the control signal; calculating actual clutch torque with reference to transmission input torque and transmission output torque; computing a clutch torque error as a difference between calculated clutch torque and the target clutch torque; and repetitively adjusting the transfer function on the basis of the clutch torque error. | 10-30-2014 |
| 20140324309 | METHOD AND SYSTEM FOR CALIBRATING AN ESTIMATED CLUTCH CHARACTERISTIC CURVE - A method and a system for calibrating an estimated clutch characteristic curve of a dual-clutch vehicle transmission are provided. The method includes
| 10-30-2014 |
| 20140330495 | MOTOR VEHICLE DRIVE TRAIN COMPRISING A HYDRODYNAMIC RETARDER THAT CAN BE DISENGAGED, AND CONTROL METHOD THEREFOR - The invention relates to a motor vehicle drive train including a hydrodynamic retarder that comprises a revolving bladed impeller and a stationary or counter-rotating bladed turbine which jointly form a working chamber that can be filled with a working medium to switch on the retarder. The hydrodynamic retarder can be mechanically disengaged from the drive train by a disconnect clutch. The invention is characterized in that a fill level monitoring device detects the current fill level of the working medium in the working chamber, while a disconnect clutch-blocking device is effectively connected in a communicating or mechanical manner to the fill level monitoring device and prevents the disconnect clutch from engaging in accordance with the detected fill level. | 11-06-2014 |
| 20140336891 | DRIVE SYSTEM FOR A HIGH LIFT SYSTEM OF AN AIRCRAFT AND METHOD FOR DETECTING A MISALIGNMENT BETWEEN A TRANSMISSION SHAFT AND AN OPENING IN A DRIVE SYSTEM FOR A HIGH LIFT SYSTEM OF AN AIRCRAFT - An arresting apparatus for arresting a rotational motion of two components relative to each other is provided. The arresting apparatus includes a first arresting means having a longitudinal axis and at least one first engaging element, and a second arresting means having an opening and at least one second engaging element. In a first mode of operation, the first arresting means extends through a first section of the opening of the second arresting means such that it is freely rotatable and the first engaging element and the second engaging element are distanced from each other. In a second mode of operation, the first arresting means is misaligned and extends through a second section of the opening of the second arresting means such that the first engaging element and the second engaging element engage and arrest the first arresting means relative to the second arresting means. | 11-13-2014 |
| 20140350811 | VEHICLE DRIVING DEVICE - A vehicle driving device includes: a clutch that is provided between a driving shaft of an engine and an input shaft of a manual transmission and that connects the driving shaft and the input shaft to each other or disconnects the driving shaft and the input shaft from each other; a detection unit that detects an obstacle that is an obstacle to traveling of a host vehicle; a collision possibility determination unit that determines a possibility of collision between the obstacle and the host vehicle based on obstacle detection information detected by the detection unit; and a collision avoidance unit that, when the collision possibility determination unit determines that there is a possibility of collision with the obstacle, performs a fuel cut of the engine even if a rotation speed of the engine is less than an idling rotation speed. | 11-27-2014 |
| 20140365094 | METHOD FOR INCREASING VACUUM PRODUCTION FOR A VEHICLE - Methods and systems for providing vacuum to a vehicle are described. In one example, a method adjusts an application force of a transmission clutch in response to a request for additional vacuum. | 12-11-2014 |
| 20150025763 | DRIVING FORCE TRANSMISSION CONTROL SYSTEM - A driving force transmission control system includes: an electric motor; a multi-disc clutch; a cam mechanism that converts rotation output from the electric motor into cam thrust force that is axial force in the axial direction of the multi-disc clutch; a pressure-conversion mechanism that converts reaction force against the cam thrust force into pressure of a fluid; a pressure sensor that detects the pressure; and a control unit that computes a command value of a current supplied to the electric motor. The control unit stores the pressure of the fluid during disengagement of the multi-disc clutch, and computes the current command value based on the pressure of the fluid to which the reaction force against the cam thrust force has been applied, and the stored pressure of the fluid. | 01-22-2015 |
| 20150032349 | DEVICE FOR CONTROLLING LOCK-UP CAPACITY OF TORQUE CONVERTER - A controller is provided with a lock-up capacity control means for controlling a lock-up capacity to a predetermined target capacity when a transition to a coast running state occurs, a timing means for measuring a time during which a slippage, which is a difference between a revolution speed (engine speed) of an input element and a revolution speed (turbine speed) of an output element, is within a predetermined range when the lock-up capacity is controlled to the predetermined target capacity, and a capacity learning means for making a learning-correction to the predetermined target capacity such that the time measured by the timing means is brought to a predetermined target time. By virtue of the learning-correction, it is possible to accurately control the lock-up capacity when the transition to the coast running state has occurred. | 01-29-2015 |
| 20150032350 | SYSTEM AND METHOD FOR REDUCING WEAR DURING BUILD-UP OF ENGINE TORQUE - A method for wear-limiting torque build-up in a vehicle ( | 01-29-2015 |
| 20150039197 | METHOD FOR DETERMINING A FILLING QUANTITY - The invention relates to a method for determining the filling quantity in the actuating system of a clutch arrangement ( | 02-05-2015 |
| 20150051803 | METHOD OF LEARNING A CLUTCH KISS POINT FOR A CLUTCH OF A DUAL CLUTCH TRANSMISSION - A method of learning a kiss point of a first clutch of a dual clutch transmission includes controlling a rotational speed of the input shaft to be within a pre-determined range. When both the first clutch and the second clutch are determined to be disengaged from the input shaft, and the rotational speed of the input shaft is within the pre-determined range, then the first clutch is moved from a disengaged position into an engaged position. An increase in a rotational speed of a first transmission shaft, which is coupled to the first clutch, is detected. When the increase in the rotational speed of the first transmission shaft is detected, a position of the first clutch is identified. The identified position of the first clutch is saved in a memory of a transmission control module as a learned first clutch kiss point. | 02-19-2015 |
| 20150073673 | VEHICLE CONTROL SYSTEM - A vehicle control system to prevent deterioration in controllability of the engagement device resulting from temporal deterioration of the engagement device. The vehicle control system is configured to switch a driving mode selectively between a first driving mode in which the engagement device is disengaged, and a second driving mode in which the engagement device is engaged. The vehicle control system comprises: an estimation means that estimates deterioration in an engagement property of the engagement device; and an engagement means that engages the engagement device after achieving synchronization between an input speed and an output speed, in case the estimation means estimates that the engagement property of the engagement device is deteriorated, and the driving mode is shifted from the first driving mode to the second driving mode. | 03-12-2015 |
| 20150094922 | SYSTEM AND METHOD FOR AUTOMATICALLY CALIBRATING THE CLUTCHES WITHIN A TRANSMISSION OF A WORK VEHICLE - In one aspect, a computer-implemented method for automatically calibrating clutches within a transmission of a work vehicle may include determining, with a computing device, whether a plurality of predetermined conditions are satisfied for performing a clutch calibration on a clutch of the transmission. The predetermined conditions may require that the work vehicle be in park and that a predetermined time period has elapsed since a previous clutch calibration was performed on the clutch. In addition, the method may include automatically initiating the clutch calibration without requiring operator input when the predetermined conditions are satisfied and performing the clutch calibration in order to calibrate the clutch. | 04-02-2015 |
| 20150094923 | METHOD TO CONTROL THE TORQUE TRANSFER RATE OF A CLUTCH, CLUTCH CONTROL UNIT FOR A CLUTCH AND TRANSMISSION WITH SUCH A CONTROL UNIT - The disclosure relates to a procedure for controlling torque transmission rate of a clutch. The clutch is in connection with a transmission and an electric machine, configured to receive torque from the electric machine by a couple half of the clutch, and configured to produce a torque guiding connection between a combustion engine and the transmission. According to the procedure, when the clutch is in a slipping condition, a shifting demand to the transmission to shift from a neutral position to a gear is detected. After detecting such a shifting demand, either a counter is started so that when the counter reaches a first count, the torque transmission rate of the clutch is being increased, or an event detection is actuated to detect an event that directly precedes the shifting process, so that when this event is detected, the torque transmission rate of the clutch is increased. | 04-02-2015 |
| 20150100212 | SYSTEM AND METHOD OF CONTROLLING FAIL SAFE FOR HYBRID VEHICLE - A system and method of controlling a fail-safe for a vehicle is provided. The method includes determining, by a controller, that remaining hydraulic pressure exists in the clutch when the clutch is not opened and a target value of oil pressure for opening the clutch is maintained for a predetermined time period. In addition, whether a vehicle is stopped is confirmed in response to determining that remaining hydraulic pressure exists in the engine clutch. The controller is further configured to transmit a signal to shift to the vehicle to a neutral (N) stage to a transmission controller and shift to the vehicle to the N-stage in response to determining that the vehicle is stopped. Then, the engine is driven by the controller in response to determining that the vehicle is shifted to the N-stage. | 04-09-2015 |
| 20150112562 | METHOD FOR CONTROLLING A CLUTCH START AFTER AN ENGINE STOP COASTING PHASE OF A MOTOR VEHICLE - A method for controlling a clutch start after an engine stop coasting phase of a motor vehicle whose service brake is applied and whose braking system may be influenced by a clutch control with regard to the braking torque. In this connection, the braking torque is reduced by the value caused by the clutch start as an effective wheel torque by engaging the clutch. This has the advantage that the exact amount of braking effect is achieved, which was intended by the original application of the brake without a clutch start. Consequently, no additional braking effect results from the clutch start, which would reduce the comfort of the passengers. The passengers namely perceive a clutch start as the application of the brake. | 04-23-2015 |
| 20150291166 | METHOD FOR FREEING A MOTOR VEHICLE BY ROCKING - A method for rocking a motor vehicle free. The vehicle has a drive-train with an automatic drive torque adjusting element, which transmits torque to a wheel, and a rotational speed and direction sensor system for detecting movement of the vehicle such that when the accelerator pedal is biased to a position different from its non-actuated position a desired drive torque can be produced. The torque adjusting element can be controlled based on the accelerator pedal position in relation to the drive torque that can be produced by the driver, and, in a rocking-free process, alternating deflection and release of the accelerator pedal causes the drive torque to fluctuate. With the rotational speed and direction sensor system, the drive torque adjusting element is controlled to suppress drive torque transmission if the travel direction of a current unpowered vehicle movement is not the same as a forthcoming power-driven vehicle movement. | 10-15-2015 |
| 20150308521 | Trimmed Lock-Up Clutch - In order to reduce torsional vibrations in a drive including a torque converter with a turbine and impeller, clutch slip speed of the drive is adjusted by manipulation of clutch pressure. This may be done in either closed loop mode or open loop mode by setting the clutch pressure to a predetermined value or continuously adjusting clutch pressure. Pressure is adjusted to produce a positively sloped function of sensed total torque of the clutch and turbine over the clutch slip speed. This produces extended service life of the drive train components, greater efficiency of the torque converter, and smoother operation of the drive. | 10-29-2015 |
| 20150308522 | CLUTCH TORQUE CONTROL METHOD FOR DCT VEHICLE - 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. | 10-29-2015 |
| 20150308523 | METHOD OF CONTROLLING A TRANSMISSION CLUTCH - A hydraulically actuated clutch is controlled based on a mathematical model that predicts the position of the clutch piston based on the profile of the commanded pressure over time. During a clutch engagement, a set of delays associated with the preparatory phase of engagement are measured and compared to predicted values. Model parameters are then adaptively adjusted based on the differences between the measured and predicted delays and on an estimate of the sensitivities between model parameters and the delays. Subsequent engagements are controlled based on the updated mathematical model to reduce the delays. Changes in the measured delays following adaptation of the model parameters are utilized to update the estimate of the sensitivities. | 10-29-2015 |
| 20150330505 | LOCK-UP CLUTCH CONTROL DEVICE AND CONTROL METHOD - A lock-up clutch control device that sets a hydraulic pressure command value for a lock-up clutch as a starting device together with a pump impeller coupled to a motor of a vehicle and a turbine runner coupled to an input shaft of a transmission such that an actual rotational speed difference between the motor and the input shaft coincides with a target slip speed that matches a state of the vehicle, and that controls the lock-up clutch based on the hydraulic pressure command value. | 11-19-2015 |
| 20160003313 | DRY CLUTCH CONTROL METHOD FOR VEHICLE - A dry clutch control apparatus may include a vibration component extractor configured to generate a virtual target input shaft speed from a wheel speed and detect a vibration component based on a difference between an actually measured input shaft speed and the virtual target input shaft speed; and a feedback controller configured to feedback-apply as an anti judder control input a clutch control torque corresponding to only an amplitude in any one direction from a center of an amplitude of the vibration component recognized in the vibration component extractor. | 01-07-2016 |
| 20160003349 | SHIFT POSITION SWITCHING DEVICE - A shift position switching device for shifting gears in association with a shift position. The device includes a shift mechanism switching between shift positions using a drive power of a motor, an encoder outputting pulse signals in sync with a rotation of the motor, and a controller rotating the motor to a target rotation position corresponding to an intended gear. The controller rotates the motor toward a dead-end on a first shift position side of the shift mechanism while observing a motor rotation speed or an acceleration of rotation of the motor based on the outputted pulse signals of the encoder. Also, the controller learns, as a reference position on the first shift position side, a first rotation position of the motor. | 01-07-2016 |
| 20160009285 | SYSTEM FOR PREVENTING DAMAGING OF A GEAR BOX OF A VEHICLE PROVIDED WITH A CLUTCH-SERVO AND A SERVO-SHIFT ACTUATED GEAR BOX SYSTEM | 01-14-2016 |
| 20160010703 | SYSTEM FOR CONTROLLING TORQUE CONVERTER TEMPERATURE DURING TORQUE CONVERTER STALL CONDITIONS | 01-14-2016 |
| 20160010707 | Vehicle Clutch Control Systems | 01-14-2016 |
| 20160017933 | METHOD OF CONTROLLING A TRANSMISSION HAVING AN IMPELLER CLUTCH - Impeller speed, which is difficult to measure when a torque converter includes an impeller clutch, is estimated based on a known relationship among impeller speed, turbine speed, and turbine torque. Turbine torque may be directly measured by a turbine torque sensor or estimated based on other measurements such as output shaft torque or vehicle acceleration. The relationship is stored in a controller in terms of the coefficients of a second order polynomial relating turbine torque to impeller speed and turbine speed. A slip speed is calculated based on a measured input shaft speed and the estimated impeller speed. Closed loop control is used to adjust the impeller clutch torque capacity to maintain a target slip. | 01-21-2016 |
| 20160025207 | Oil Supply Device - The present invention relates to an oil supply device for use in an automatic transmission mounted on a vehicle, and is applied to a vehicle in which an idle reduction control or the like is performed. The oil supply device includes an oil pump which is driven by a driving motor of a vehicle and a motor separate from the driving motor, and an engagement and disengagement element which transmits a driving force of the driving motor to the oil pump, and the oil pump is driven by the motor without using a drive system of the driving motor. | 01-28-2016 |
| 20160040732 | SYSTEM AND METHOD FOR THE UPDATE OF FILL PARAMETERS IN WET CLUTCHES THROUGH CROSS LEARNING - A system and method for updating a set of filling parameters for a wet clutch system is provided. The clutch comprises a piston, a proportional valve, a controller, and a sensor. The method comprises the steps of providing the wet clutch system, providing the set of filling parameters, actuating the wet clutch system based on at least one of the set of filling parameters, sensing a response of the wet clutch system during actuation of the wet clutch system, comparing an observed filling parameter to at least one of the set of filling parameters, calculating a fill error between the observed filling parameter and the at least one of the set of filling parameters, and adjusting a plurality of the set of filling parameters based on the fill error. | 02-11-2016 |
| 20160076605 | METHOD AND APPARATUS FOR DETECTING TOUCH POINT OF CLUTCH - Disclosed are a method and an apparatus for detecting a touch point of a clutch and the method includes: maintaining a touch point of the clutch; correcting a setting value for determining a lowest value by calculating drag torque using a speed and an acceleration of a input shaft to change a detection range of the touch point; setting the lowest value of the speed of the input shaft within the changed detection range of the touch point to a reference value of the input shaft after actuating the clutch; releasing the clutch when the speed of the input shaft is more than a value acquired by adding the reference value of the input shaft and the corrected setting value for determining the lowest value; and updating the touch point as a clutch position matched to the reference value. | 03-17-2016 |
| 20160076606 | VEHICLE CONTROL DEVICE - A vehicle control device includes a rotating machine, a clutch transmitting torque to the rotating machine when engaged, and a detection unit detecting a change in cogging torque of the rotating machine, and learns an engagement position of the clutch based on a change in the cogging torque during a change in a clutch stroke of the clutch in a case where the rotating machine is stationary. | 03-17-2016 |
| 20160084125 | CONTROL METHOD FOR OIL PUMP - A system and method of controlling an automotive electric oil pump are provided. The method of controlling an oil pump can minimize power consumption of a vehicle and improve the fuel efficiency accordingly by learning the performance of the electric oil pump and operating the electric oil pump based on performance. | 03-24-2016 |
| 20160121871 | SYSTEM AND METHOD FOR CONTROLLING VACUUM PUMP IN GASOLINE VEHICLE WITH CLUTCH - A system for controlling a vacuum pump in a gasoline vehicle with a clutch includes a clutch installed between a driving source supplying power of an engine and a vacuum pump to selectively interrupt the power supplied from the driving source to the vacuum pump. A pressure sensor is configured to sense a pressure of a vacuum line installed between the vacuum pump and a brake booster. A controller is configured to compare the pressure measured by the pressure sensor with a target pressure value to selectively interrupt the clutch. | 05-05-2016 |
| 20160121872 | METHOD FOR SELECTING A GEAR - A method is provided for balancing clutch wear in a dual clutch transmission, the transmission comprising a first transmission mechanism arranged to transmit mechanical driving force from an output shaft of the internal combustion engine to a first input shaft and to put any one of a first set of gears in an engaged state to connect the first input shaft to the ground engaging members; a second transmission mechanism arranged to transmit mechanical driving force from the output shaft of the internal combustion engine to a second input shaft and to put any one of a second set of gears in an engaged state to connect the second input shaft to the ground engaging members; a controllable first clutch unit arranged to bring the output shaft of the internal combustion engine and the first input shaft into engagement with each other; a controllable second clutch unit arranged to bring the output shaft of the internal combustion engine and the second input shaft into engagement with each other, and an electronic control unit arranged to control gear selection and clutch unit actuation. The method involves performing the steps of determining which clutch unit is subjected to the most accumulated wear and selecting a gear actuated by the other clutch unit during launch of the vehicle. | 05-05-2016 |
| 20160160943 | AUTOMATIC CLUTCH CALIBRATION - A method for automatic detection of need for clutch calibration includes registering and storing in a data memory, before or in connection with engine shut down, a value of a clutch operating parameter, registering a corresponding value of the clutch operating parameter in connection with subsequent engine start up, and determining need for clutch calibration if the difference between the stored value of the clutch operating parameter and the corresponding value of the clutch operating parameter exceeds a predetermined threshold value. | 06-09-2016 |
| 20160169304 | System and Method for Preventing Centrifugal Clutch Lock-Ups Within a Transmission of a Work Vehicle | 06-16-2016 |
| 20180023639 | VEHICLE CONTROLLING DEVICE | 01-25-2018 |
| 20190143985 | TRACTION CONTROL SYSTEM UTILIZING TRANSMISSION BRAKING | 05-16-2019 |
