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| Number | Title | Issue Date |
| 8090512 | System and method for controlling a clutch fill event A method optimizes a fill event of an apply chamber of a fluid-actuated clutch, and includes determining input values describing the fill event, and then estimating a fill time using the input values. The method includes filling the apply chamber using the estimated... | 01/03/2012 |
| 8090513 | 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 th... | 01/03/2012 |
| 8065065 | 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 ... | 11/22/2011 |
| 8050835 | Method and apparatus for clutch pressure control A method, apparatus and system for controlling transmission clutch system output pressures is provided. A transmission control unit and a pressure control device including an electro-hydraulic valve and a pressure switch cooperate to provide self-calibrating clutch ... | 11/01/2011 |
| 8046144 | Systems and methods for non-linear proportional and derivative control during vehicle garage shifts The present disclosure utilizes Non-linear Proportional and Derivative (NLPD) control on a duty cycle of an applying clutch for stationary and rolling vehicle garage shifts. The applying clutch can be engaged by as electrically activated solenoid valve, and the pres... | 10/25/2011 |
| 8000869 | Method for determining a torque characteristic of an automated friction clutch A method for determining a torque characteristic of a friction clutch located in a drive train of a motor vehicle in the force flow between a drive engine and a transmission and which is closed in its rest position. At least two marker points of a regulating-path-de... | 08/16/2011 |
| 7979187 | Method for engaging a clutch A method for coupling a load to a power source by means of a clutch, the method having the steps of initially increasing the pressure of the actuator to bring the pressure plates of the clutch into contact with the clutch plates | 07/12/2011 |
| 7974758 | Method and apparatus for the setting of the torque transmitted by a friction clutch A method and apparatus for setting the torque transmitted by a friction clutch via an actuator chain having an electric motor, a reduction gear and a mechanism for converting the rotary movement of the electric motor. In the method, a desired angle of rotation of th... | 07/05/2011 |
| 7966116 | Method for controlling a dual clutch transmission during shift 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, wh... | 06/21/2011 |
| 7908070 | 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 5 complying with a law of behav... | 03/15/2011 |
| 7835844 | Method and system for control of an automatic friction clutch arranged between an engine and a gearbox on a motor vehicle An automatic friction clutch in a drive train of a motor vehicle is controlled to transfer a clutch torque that includes an engine torque-dependent component and a clutch slip-dependent component. ... | 11/16/2010 |
| 7813858 | 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.... | 10/12/2010 |
| 7813857 | 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 exe... | 10/12/2010 |
| 7769518 | Control of lock-up clutch A control device of a lock-up clutch of a torque converter interposed between a transmission and engine used with a vehicle, is disclosed. The control device has a sensor which detects an input rotation speed to the torque converter, a sensor which detects an output... | 08/03/2010 |
| 7769517 | Lock-up clutch control A lock-up clutch control apparatus for controlling a lock-up clutch (6) provided in a torque converter (5) installed between an engine (3) and a transmission (4), is disclosed. The lock-up clutch control apparatus has a differential press... | 08/03/2010 |
| 7630812 | Method and system for controlling a transfer case clutch to protect against excessive heat In a motor vehicle driveline including a transfer case whose output is continually connected to a first output, a clutch, operating partially engaged, responds to a control signal to change the degree of clutch engagement, whereby a second output is connected drivea... | 12/08/2009 |
| 7603219 | Method for estimating clutch engagement parameters in a strategy for clutch management in a vehicle powertrain A method is disclosed for computing clutch engagement characteristics of a friction clutch system in a vehicle powertrain. A dynamic model of the system is used under conditions that cause clutch slipping. Algebraic equations defining a functional relationship betwe... | 10/13/2009 |
| 7407046 | Adaptive control of externally controlled fan drive An externally controlled fan drive includes a fluid clutch that alters torque delivered to a fan housing to rotate the fan housing at a target fan speed. An adaptive controller measures the actual fan speed and adaptively updates the control logic to compensate for ... | 08/05/2008 |
| 7373235 | Method and system for control of an automatic friction clutch arranged between an engine and a gearbox on a motor vehicle An automatic friction clutch, contained in the drive train of a motor vehicle is controlled such that a preset clutch torque can be transmitted. The preset clutch torque is composed of a pilot clutch torque M and a clutch torque Msr, which is dependent on slip. ... | 05/13/2008 |
| 7373234 | Method for determining solenoid control current using hysteresis interpolation for transmission clutch control A transmission control arrangement controls the generation of a required solenoid control current that is provided to an electro-hydraulic pressure control module to ultimately control clutch pressure. The module includes a linear solenoid, which has an up direction... | 05/13/2008 |
| 7369930 | Method and apparatus to control hydraulic pressure in an electrically variable transmission A method and apparatus to control an electrically variable transmission, by dynamically controlling system main hydraulic clutch pressures, based upon required clutch capacity, as determined by output load of the transmission. Included is a method to regulate hydrau... | 05/06/2008 |
| 7346442 | Lockup control of torque converter A controller (5) controls the engaging force between a pump impeller (1a) connected to an engine (2) and a turbine runner (1b) connected to an automatic transmission (23). The controller (5) first performs feed... | 03/18/2008 |
| 7328094 | Vehicle take-off control apparatus and method A take-off control apparatus and method is provided for a vehicle equipped with an automatic transmission having an apply element that is applied when the vehicle takes off from a standstill, which executes a neutral control that releases the apply element when the ... | 02/05/2008 |
| 7328095 | Lock-up control for torque converter A lock-up clutch control device controls a lock-up clutch provided in a torque converter in a vehicle. The lock-up clutch control device includes a sensor for detecting a rise of a vehicle speed; a differential pressure generator which generates a differential press... | 02/05/2008 |
| 7315776 | Control device for an at least part-time four-wheel-drive motor vehicle In the case of a control device for an at least part-time four-wheel-driven motor vehicle, having a control unit which can variably distribute the driving torque of a drive unit to primary driving wheels, which are permanently connected with the drive unit, and to s... | 01/01/2008 |
| 7306545 | Transfer case clutch calibration method A method of improving performance of secondary driveline clutches in motor vehicle transfer cases includes the steps of testing each manufactured transfer case to determine the clutch drive current versus torque transfer function, fitting such determined function to... | 12/11/2007 |
| 7302330 | Torque converter clutch dynamic control A method of dynamically controlling pressure to a torque converter clutch (TCC) of a torque converter coupled to a transmission is provided. The method includes: monitoring throttle position; monitoring engine speed; controlling pressure to the torque converter clut... | 11/27/2007 |
| 7270624 | Driving unit for motor vehicle and method for determining the characteristic of a coupling of the driving unit A drive unit for a motor vehicle, comprising a drive engine, a transmission having an intermediate shaft with intermediate shaft brake, and a friction clutch which is engaged between the engine and the transmission and which, via an electronic control unit, is opera... | 09/18/2007 |
| 7258648 | Model-based control for torque biasing system A power transmission device equipped with a torque biasing system and control system for controlling the torque biasing system is operable to determine a torque command and calculate a torque error based on the torque command and a model-based torque. A control sign... | 08/21/2007 |
| 7257522 | Simulator for automatic vehicle transmission controllers A simulator comprising computer-aided design programs for simulating a shift control algorithm stored in an ECU of an automatic transmission having hydraulic clutches. In the simulator, a simplified hydraulic model describes the entire system so as to design a third... | 08/14/2007 |
| 7234367 | Power take-off control system A control system and method for detecting variable load types and controlling the operation of a PTO clutch to effect engagement of the clutch with variable loads, and especially to more optimally effect the engagement of a clutch with a heavy load is disclosed. The... | 06/26/2007 |
| 7234366 | Power take-off control system A control system and method for detecting variable load types and controlling the operation of a PTO clutch to effect engagement of the clutch with variable loads, and especially to more optimally effect the engagement of a clutch with a very light load or an associ... | 06/26/2007 |
| 7228216 | Automatic shift control apparatus and method for manual transmission In automatic shift control apparatus and method for a manual transmission, at least one clutch is interposed between an engine and the manual transmission and a controller performs a feedback control for an engagement force of the clutch after a gear shift for the m... | 06/05/2007 |
| 7222005 | Abnormal oil pressure reduction determination device for vehicle transmission An abnormal oil pressure reduction determining device has an oil pressure sensor which detects a real oil pressure, a sensor which detects a vehicle running state, and a controller which sets an oil pressure command value for an oil pressure control mechanism. The c... | 05/22/2007 |
| 7219000 | Speed control for an electrically variable transmission A multi-mode hybrid transmission has speed control provided via an open loop model derived as a function of preselected transmission accelerations and controlled and uncontrolled transmission torques. Motor torques are selected as the controlled torques and other pr... | 05/15/2007 |
| 7203589 | Method for a torque-based control of an internal combustion engine In a method for a torque-based control of an internal combustion engine wherein from an input value representing a desired engine power output a desired torque value is calculated, then the desired torque value is converted using a performance graph while taking ano... | 04/10/2007 |
| 7194348 | High acceleration time shift control apparatus and control method for vehicle A high acceleration time shift control apparatus and method for a vehicle is provided. The high acceleration time shift control apparatus includes a transmission which achieves plural shift speeds whose gear ratios are different from each other; and a high accelerat... | 03/20/2007 |
| 7189187 | Control apparatus and method for vehicular automatic transmission A control apparatus for a vehicular automatic transmission includes a control portion that executes a neutral control in which the control portion places the automatic transmission in a neutral state by reducing an application load on a frictional apply device insid... | 03/13/2007 |
| 7188018 | Control device for an at least partially four-wheel-driven motor vehicle In the case of a control device for an at least partially four-wheel-driven motor vehicle, having a control unit which can variably distribute the driving torque of a drive unit to primary driving wheels, which are permanently connected with the drive unit, and to s... | 03/06/2007 |
| 7188017 | Method and apparatus for controlling a transfer case clutch to improve vehicle handling In a motor vehicle driveline having an automatic transmission driveably connected to a transfer case whose output is continually connected to a first output, a clutch, selectively engaged in response to a control signal, driveably connects a second output to the fir... | 03/06/2007 |
