| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 701065000 | Responsive to road, external, or ambient condition | 45 |
| 20080201047 | Method For Influencing an Automatic Gearbox, Taking Into Consideration the Tractional Resistance - The invention relates to a method for influencing an automated transmission taking into consideration the tractional resistance with which the magnitude of an external tractional resistance can be determined easily and without need of data exchange with devices outside the vehicle, the same as independently of a digitalized road map of the area in which the vehicle drives and with low construction complexity. | 08-21-2008 |
| 20080234905 | Method for Identifying a Road Condition During Driving of a Vehicle - A method for identifying a road condition during driving of a vehicle. The vehicle includes an engine with an engine output shaft connected to an automated mechanical transmission via a clutch. A transmission output shaft is connected to at least one driven wheel of the vehicle, and the system further includes a vehicle suspension system with sensors for measuring the vertical movement of wheels of the vehicle relative vehicle bodywork, at least one control unit adapted to receive a variety of input signals and process those signals in accordance with programmed logic rules to issue command output signals to the engine, for torque request, to the transmission for gear shifting and to the clutch. The control unit, when sensing driving conditions, sends signals indicative of a first road condition and is programmed to change gear shifting strategy for the transmission to a gear shifting strategy optimized for the first road condition if present gear shifting strategy is a second gear shifting strategy for a second road condition. One of the road conditions can be off-road. | 09-25-2008 |
| 20090018738 | Gear shift system for vehicle, control method and control device for automatic transmission - A parameter α(OUT) having an accelerator pedal position, a vehicle speed and a drive force as components is set according to information representing a driver's operation and information representing running environment of a vehicle. A gear is set according to the parameter α(OUT) and a map determining the gear based on the accelerator pedal position, the vehicle speed and the drive force. A gear shift line is defined such that a rate of increase of the drive force with respect to the vehicle speed is zero or more. A down-shift line is defined such that the drive force decreases with increase in accelerator pedal position. Down-shift after up-shift as well as the up-shift after the down-shift are inhibited when both a condition that an amount of change of the accelerator pedal position after last gear shift is larger than a threshold and a condition that an amount of change of the drive force after the last gear shift is larger than the threshold are satisfied. | 01-15-2009 |
| 20090198424 | METHOD AND APPARATUS FOR CONTROLLING PICKUP ON UPHILL FOR A MOTOR-VEHICLE PROVIDED WITH AN AUTOMATIC OR ROBOTIZED GEARBOX - A method and apparatus to control the pickup on an uphill slope of an automotive vehicle provided with an automatic or robotised gearbox provide the definition of a control strategy of the gear box operation, also according to the gradient of the uphill slope, which is preferably calculated based on a longitudinal acceleration value of the automotive vehicle, and based on the altitude at which the automotive vehicle can be found, which is preferably calculated based on a detected atmospheric pressure value. In this way, it is also possible to consider the reduction in the engine torque due to the reduction in the air density with altitude. | 08-06-2009 |
| 20090254257 | ALTITUDE MEASUREMENT USING TRANSMISSION PRESSURE SENSOR - A control system of a vehicle includes a pressure sensor that generates a pressure signal based on a pressure in a transmission of the vehicle. A control module determines atmospheric pressure based on the pressure signal. The control module controls operation of at least one of the transmission and an engine of the vehicle by generating a control signal based on the atmospheric pressure. | 10-08-2009 |
| 20090287384 | SYSTEM AND METHOD FOR CONTROLLING THRUST FORCE OF BELT OF CONTINUOUSLY VARIABLE TRANSMISSION - The present invention relates to a system and a method for controlling the thrust force of a belt of a CVT. The method includes: determining whether a rough road condition is satisfied; continuously calculating, in a case that the condition is satisfied, a thrust force for a first predetermined time by gradually increasing a safety factor to a safety factor of the rough road condition; increasing the thrust force of the belt to the calculated thrust force; and maintaining the thrust force according to the safety factor of the rough road condition for a second predetermined time. With that method, belt slip can be prevented and fuel efficiency can be improved. | 11-19-2009 |
| 20100017082 | METHOD FOR CONTROL AND/OR REGULATION OF A MOTOR VEHICLE AUTOMATIC TRANSMISSION ACCORDING TO DRIVING ROUTE SLOPE - A method for controlling and/or regulating an automatic transmission of a vehicle, depending on the driving route slope in which a winding mountain pass road detection is carried out, depending upon a topography of the driving route, in such a way that a time for either setting or resetting winding mountain pass road detection is determined. | 01-21-2010 |
| 20100030437 | METHOD FOR ADAPTING SHIFT SCHEDULE OF AN AUTOMATIC TRANSMISSION BASED ON GPS/MAP INFORMATION - A powertrain control includes monitoring map preview information, determining a road gradient factor based upon the map preview information, and adapting a transmission shift schedule based upon the road gradient factor. | 02-04-2010 |
| 20100049413 | VEHICLE DRIVE ASSIST APPARATUS AND METHOD - A vehicle drive assist apparatus for assisting in driving a vehicle by varying drive torque of wheels that includes: a torque-up mechanism increasing the drive torque; a step detecting mechanism detecting a step that may exist on a road surface in a traveling direction of the vehicle; and a switching mechanism switching a status of control between a first status in which the torque-up mechanism is permitted to operate and a second status in which the torque-up mechanism is restricted to operate, wherein the switching mechanism forms the first status if the step is detected by the step detecting mechanism. | 02-25-2010 |
| 20100100293 | GEAR SHIFT CONTROLLING APPARATUS - A gear shift controlling apparatus for changing a gear ratio based on information of a corner, in which the gear ratio is changed by setting a maximum value of a first target gear ratio set based on required deceleration when passing through the corner and a second target gear ratio set based on required driving force obtained from information of a road after exiting the corner, as a target gear ratio. It becomes possible to further improve drivability when driving around the corner. | 04-22-2010 |
| 20100198469 | CONTROLLER FOR AUTOMATED VARIABLE-SPEED TRANSMISSION IN A MOTOR VEHICLE WITH ALL-WHEEL DRIVE - A method of controlling an automated variable-speed transmission in a drivetrain of a motor vehicle having all-wheel drive in which, during driving operation under difficult ground conditions, measures are provided for suppression of the automatic shift processes. To reliably prevent undesired automatic shift processes when the vehicle is in an all-wheel drive mode on difficult terrain, particularly also in combination with active differential locks, currently active traction-related mechanisms are evaluated by a plausibility check taking into account detection of wheel slippage, and the measures for suppressing automatic shift processes are carried out as a function of the evaluation. | 08-05-2010 |
| 20100324793 | METHOD FOR CONTROLLING AN AUTOMATIC MULTI-STEP SHIFT TRANSMISSION - A method of controlling an automatic transmission of a motor vehicle that is situated in the force flow between a drive motor and an axle drive of a drive axle or a transfer box in which the current road inclination (α | 12-23-2010 |
| 20110035126 | DRIVING FORCE CONTROLLING APPARATUS OF VEHICLE - A driving force controlling apparatus includes a driving force controller configured to determine a state of a road surface. A driving force controller is configured to control a driving force of a vehicle based on the road surface state. A rear-wheel speed sensor is configured to detect a rear-wheel speed. A low-friction-coefficient road surface determining device is configured to determine whether the road surface is a low-friction-coefficient road surface using the rear-wheel speed on a predetermined condition. A determination prohibition device is configured to prohibit the low-friction-coefficient road surface determining device from determining whether the road surface is a low-friction-coefficient road surface, if (a) the rear-wheel speed sensor is abnormal, or if (b) a predetermined time has elapsed from when a shift range is changed from a reverse range to a drive range and/or (c) a gear position has become greater than or equal to a predetermined gear position. | 02-10-2011 |
| 20110035127 | VEHICLE TRANSMISSION CONTROL APPARATUS - A vehicle transmission control apparatus includes an expected-acceleration calculator configured to calculate an expected acceleration of a vehicle based on at least an engine load and a vehicle speed. An actual-acceleration calculator is configured to calculate an actual acceleration of the vehicle. An uphill determination device is configured to calculate an uphill determination value based on a difference between the expected acceleration and the actual acceleration and configured to calculate a corrected uphill determination value by subjecting the uphill determination value to moderating calculation using a moderating coefficient and to update the corrected uphill determination value in accordance with the moderating coefficient. A transmission-characteristic selecting device is configured to select one of transmission characteristics based on the corrected uphill determination value. A transmission controller is configured to perform transmission control based on the transmission characteristic selected by the transmission-characteristic selecting device. | 02-10-2011 |
| 20110066341 | VEHICLE CONTROL APPARATUS - A vehicle control apparatus includes a bad-road control-mode switch configured to be manipulated by a driver, and a bad-road control section configured to perform a bad-road control when a bad-road control mode is selected by the bad-road control-mode switch. The bad-road control section includes a braking-force applying section configured to apply a braking force to a drive-wheel, and a driving-force applying section configured to apply a driving force to the drive-wheel which is receiving the braking force from the braking-force applying section, as the bad-road control. | 03-17-2011 |
| 20110125376 | AUTOMATIC DOWNHILL SPEED CONTROL SYSTEM - A method for automatically controlling the downhill speed of a machine. The method includes establishing a target machine speed based on a current machine speed and determining whether at least one trigger condition including a grade greater than a predetermined threshold has been satisfied. If satisfied, the method activates a control system to control at least one of a powertrain retarder and a change in a transmission gear to prevent exceeding the target machine speed. | 05-26-2011 |
| 20120310499 | METHOD FOR DETERMINING AND SELECTING THE OPTIMAL GEAR BEFORE DRIVING INTO A CURVE FOR A MOTOR VEHICLE HAVING AN AUTOMATIC TRANSMISSION - A method of determining and shifting to an optimal gear in a vehicle prior to entering a curve in a vehicle which comprises an automatic transmission. A curve speed limit is determined for an anticipated curve which is recognized by a navigation device, an anticipated road pattern and dependent on the vehicle and curve or road data, and a sportiness indicator (Ftyp). For each anticipated curve, an actual, optimal gear is determined, based on the determined curve speed limit and the sportiness indicator (FTyp) and, after determinating the optimal gear, the method performs a check to determine whether or not the optimal gear deviates from the engaged gear (RGA_DEST). When a deviation is recognized and a driver reaction, which causes a deceleration of the vehicle and/or a reduction of the vehicle speed, is present, a down shift down to the actual, optimal gear occurs. | 12-06-2012 |
| 20130054103 | METHOD FOR REDUCING THE ENERGY ABSORBED BY A VEHICLE IN A COLLISION AND A SYSTEM FOR IMPLEMENTING THE METHOD - A system for a vehicle that executes a method to reduce the energy absorbed by the vehicle due to a collision, the method including actively decelerating the vehicle when it is determined that a collision with an object is possible, terminating active deceleration to allow the vehicle to move forward when it is determined that a collision with the object is inevitable just before the collision, and allowing the vehicle to make contact with the object and move generally in an opposite direction after the vehicle makes contact with the object. | 02-28-2013 |
| 20130096791 | 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 |
| 20130096792 | METHOD FOR CONTROLLING THE DRIVING MODE OF A MOTOR VEHICLE - A method of controlling the driving mode of a motor vehicle, having a largely automated drive-train including a drive motor, a transmission and a separator clutch arranged between the motor and transmission, such that while driving, if certain operating conditions exist and a speed profile calculated with reference to topographical data and vehicle parameters for a road section lying ahead is suitable, the drive-train is disengaged and driving continues in a coasting mode until the occurrence of a termination signal. To enable coasting operation, the calculated speed profile for the case of immediate opening of the drive-train is determined continually at equidistant successive travel points along the driving stretch and is, in each case, evaluated in relation to lower and upper speed limits. Coasting is only enabled if, for a specified minimum number of successive travel points, the evaluation result is in each case positive. | 04-18-2013 |
| 20130103274 | Method and Device for Controlling at Least One Driver Assistance System of a Vehicle and Vehicle Equipped Therewith - The description relates to a method and a device for controlling at least one driver assistance system ( | 04-25-2013 |
| 20130110365 | SHIFT-BY-WIRE SYSTEM FOR AUTOMATIC TRANSMISSION OF VEHICLE | 05-02-2013 |
| 20130166164 | GEAR SELECTION DEVICE FOR A MOTOR VEHICLE - A gear selection device for a motor vehicle is provided. The gear selection device includes a logic unit which is equipped in order to determine a gear to be engaged in a transmission of the motor vehicle by means of at least one variable connected to the load of an engine of the motor vehicle, and an ambient area sensor. The gear selection device is equipped in order to take into account information supplied by the ambient area sensor relating to the road located in front of the vehicle with the outputting of a selection signal specifying a newly determined gear. | 06-27-2013 |
| 20130211681 | METHOD FOR CONTROLLING THE SHIFTING OF AN AUTOMATIC GEARED TRANSMISSION - A method for controlling shifts in an automated multi-step variable-speed transmission, in a drive-train of a motor vehicle, between a drive engine in the form of an internal combustion engine and an axle drive. During driving, besides current vehicle, road and driver-specific operating parameters, topographical data relating to a road section ahead of the motor vehicle, in particular the road section height profile, are determined, and from this information, the driving resistance profile (FFW(xF)) of the motor vehicle for the road section ahead is determined. In the automatic mode of the multi-step variable-speed transmission, control commands for traction upshifts and/or traction downshifts are derived, during the traction operation, as a function of the driving resistance profile (FFW(xF)) and are implemented in the transmission. A limiting gear progression (GGr(xF)) is determined, which consists of the sequence of gears, and is evaluated for the derivation of control commands. | 08-15-2013 |
| 20130338892 | CONTROL OF A BACKING VEHICLE - A method for controlling a backing vehicle includes if a back-up sensor indicates that an obstacle is present behind the vehicle and a gear selector is moved to a reverse position, delaying reverse gear engagement and producing a warning signal, and producing a transmission tie-up if brakes are applied insufficiently to stop the vehicle. | 12-19-2013 |
| 20130345942 | GEARBOX CONTROL DEVICE - A transmission control device ( | 12-26-2013 |
| 20140032068 | ESTIMATION OF ROAD INCLINATION - A method and a system for estimating a road gradient α by using a sensor fusion: Detect whether at least one dynamic process is affecting the vehicle. Estimate gradient α by means of the sensor fusion by joint weighting of at least two input signals to the sensor fusion. The at least two input signals include a signal based on an accelerometer and an input signal based on at least one force equation. At least one of the input signals and/or at least one weighting parameter for the sensor fusion are determined on the basis of detecting whether the at least one dynamic process is affecting the vehicle. | 01-30-2014 |
| 20140046561 | AUTOMATIC TRANSMISSION APPARATUS AND STRADDLE-TYPE VEHICLE EQUIPPED WITH THE APPARATUS - An automatic transmission apparatus includes a transmission mechanism, an actuator arranged to rotate a shift drum, and a control device. The control device includes a determining unit arranged to detect a state of a straddle-type vehicle and to determine whether the straddle-type vehicle is in a first state in which an engaging force between the transmission gears is estimated to be equal to or greater than a predetermined value or in a second state in which the engaging force is estimated to be less than the predetermined value; a first gear shifting control unit arranged and programmed to control the actuator so that, if in the first state, the rotational speed of the shift drum becomes a first rotational speed; and a second gear shifting control unit arranged and programmed to control the actuator so that, if in the second state, the rotational speed of the shift drum becomes a second rotational speed that is lower than the first rotational speed. | 02-13-2014 |
| 20140095036 | Automatic Shift Control System for a Powertrain and Method - A machine powertrain having a transmission includes a control device responsive to selectively vary the transmission ratio in response to a shift signal. A lift sensor associated with a machine implement monitors an implement position and provides a lift signal. A ground speed sensor monitors the ground speed and provides a ground speed signal. A controller monitors the lift and ground speed signals, compares the lift signal to a predetermined position range, compares the ground speed signal to a predetermined ground speed range and, when the ground speed signal is within the predetermined ground speed range and the lift signal is within the predetermined position range, provides the shift signal causing the selectively variable ratio of the transmission to change. | 04-03-2014 |
| 20140114542 | METHOD AND SYSTEM FOR A VEHICLE - A method for running a vehicle ( | 04-24-2014 |
| 20140136062 | FOUR-WHEEL-DRIVE VEHICLE - A four-wheel-drive vehicle includes a first driving force transmission system and a second driving force transmission system. A control device controls the second driving force transmission system. The control device includes a road surface state determination section that determines whether a coefficient of friction of a road surface is equal to or higher than a predetermined value based on an index value regarding the coefficient of friction of the road surface, controls a dog clutch such that the dog clutch is engaged irrespective of the index value regarding the coefficient of friction of the road surface when an ignition switch is brought into the on-state, and controls the dog clutch such that the dog clutch is brought into the disengaged state when it is determined that the coefficient of friction of the road surface is equal to or higher than the predetermined value. | 05-15-2014 |
| 20140172256 | Grade and Payload Based Transmission Gear Selection Strategy - A method is described for controlling an automatic transmission of a vehicle during deceleration arising from a force resisting forward movement arising from an incline grade and a vehicle mass. The force of resistance to forward movement is determined at least based upon the incline grade. A destination gear is calculated based upon a set of gear-specific output curves and the force of resistance. The destination gear is compared to a current gear within which the machine is operating. The programmed controller executes an early downshift schedule when the destination gear is at least two positions lower than the current gear, thereby initiating a series of downshifts of the automatic transmission from the current gear to the destination gear. During each gear shift performed according to the early downshift schedule, shifting occurs at a cross-over point between output curves of current and next lower gears. | 06-19-2014 |
| 20140214295 | Open Loop Machine Motor Speed Control Based on Downhill Slope Determination - A manner of managing operation of a machine is described for preventing damage/wear to movable machine components arising from operation of the machine/parts at excessive speed while the machine is traveling down a steep incline. The managing of the machine operation includes determining a downhill slope value in a machine direction of travel and then establishing a maximum commanded transmission output speed in accordance with the determined downhill slope value. Thereafter a maximum commanded gear ratio is established, for a transmission having a variable gear ratio, based upon the maximum commanded transmission output speed and a current engine speed. A controller compares the maximum commanded variable gear ratio to an operator requested gear ratio, and a target gear ratio is established for the variable gear ratio of the transmission based upon a minimum of the compared commanded variable gear ratio and the operator requested gear ratio. | 07-31-2014 |
| 20150019093 | SYSTEM AND METHOD OF CONTROLLING TRANSMISSION FOR VEHICLE - A system and a method of controlling a transmission for a vehicle can protect the transmission by controlling an oil temperature in the transmission when driving on a long uphill road. The system may include: an engine generating driving torque; a transmission converting and outputting the driving torque generated at the engine; a lock-up clutch disposed between the engine and the transmission, and directly coupling the engine to the transmission selectively; a data detector detecting data for controlling the transmission; and a controller determining whether a long uphill road condition is satisfied based on the data, determining whether a protective logic operating condition is satisfied if the long uphill road condition is satisfied, and operating a protective logic if the protective logic operating condition is satisfied. | 01-15-2015 |
| 20150019094 | TRACTION CONTROL SYSTEM FOR 4WD/AWD VEHICLES EQUIPPED WITH ONBOARD CAMERA - A method controls a powertrain that directs power from an engine and a transmission to all four wheels or to just front wheels or to just rear wheels. The method includes monitoring information transmitted over a communications network. The method determines whether one or more components of the powertrain are in an active condition or in an inactive condition. The one or more components of the powertrain are in the inactive condition when not connected to the transmission and not connected to the front wheels or the rear wheels. The one or more components of the powertrain are in the active condition when connected to the transmission and connected to the front wheels and the rear wheels. The method switches the one or more components of the powertrain between the inactive condition and the active condition based at least in part on visual data provided by an on-board camera system. | 01-15-2015 |
| 20150066320 | CONTROL DEVICE FOR CONTINUOUSLY VARIABLE TRANSMISSION - A frictional engagement element ( | 03-05-2015 |
| 20150112561 | CONTROL APPARATUS FOR AUTOMATIC TRANSMISSION AND CONTROL METHOD FOR AUTOMATIC TRANSMISSION - A control apparatus for an automatic transmission that selectively engages a plurality of frictional engaging elements for shift control includes a shift instruction device, a temperature calculator, an engageability determiner, an engagement delay device, a load calculator, a cumulative load calculator, and a threshold temperature changer. The engageability determiner is configured to determine whether at least one of the plurality of frictional engaging elements is engageable or not based on a comparison between a temperature of the at least one of the plurality of frictional engaging elements calculated by the temperature calculator and a predetermined threshold temperature in a case where the shift instruction device outputs a shift instruction. The threshold temperature changer is configured to change the predetermined threshold temperature in a case where a cumulative load calculated by the cumulative load calculator reaches a value greater than or equal to a predetermined value. | 04-23-2015 |
| 20150120157 | ROAD GRADE ESTIMATION FOR A TRAILERED VEHICLE - An example vehicle control method includes, among other things, controlling a towing vehicle based upon a trailered vehicle road grade. | 04-30-2015 |
| 20150120158 | PITCH-BASED SHIFTING - A computer-implemented method and a control system are described for controlling the shifting of a vehicle, at least in part, according to its pitch. The method includes using a pitch-detection mechanism to determine one or more indicators of the pitch of the vehicle. The method includes receiving, at one or more computing devices, a signal associated with the pitch indicators and determining a pitch value for shifting. The method further includes determining, by the one or more computing devices, a shift procedure based upon, at least in part, the determined pitch value and implementing the shift procedure to effect a shift operation for the vehicle. | 04-30-2015 |
| 20150322912 | CONTROL SYSTEM FOR VEHICLE - A control system for vehicles equipped with an engine and an automatic transmission mechanism which has a non-running position and a running position one of which is selected by a driver of the vehicle and works to automatically change a speed of an output thereof. The control system basically inhibits the engine from being automatically stopped on an uphill road in order to minimize the rolling back of the vehicle upon start of the vehicle, but is responsive to the driver's intention to permit the engine to be automatically stopped, that is, the switching from the running position to the non-running position to stop the engine. | 11-12-2015 |
| 20150362065 | TRANSMISSION CONTROL SYSTEM - A method and a system for choosing a transmission mode in a vehicle over the course of a road section, wherein the vehicle has applied coasting prior to this road section and wherein a highest permitted speed v | 12-17-2015 |
| 20160046185 | MULTI-MODE TANDEM AXLE FUNCTION SELECTION APPARATUS AND METHOD - A drive axle system ( | 02-18-2016 |
| 20160159369 | SAFETY METHOD FOR PASSENGER OF VEHICLE - A safety method for a passenger of a vehicle may include a control logic for detecting a current gear position in a state where the vehicle is stopped, determining whether a passenger door and a rear seat door are open, and allowing driving in a state where the passenger door and the rear seat door are closed but limiting a vehicle drive by changing the gear position to a non-drivable gear position in a state where the passenger door or the rear seat door is open. | 06-09-2016 |
| 20160186857 | METHOD OF CONTROLLING MACHINES WITH CONTINUOUSLY VARIABLE TRANSMISSION - A method is provided for controlling a machine having a continuously variable transmission travelling on a ground surface. The method includes receiving signals indicative of a speed of the machine and an inclination angle of the surface on which the machine is travelling. The method further includes receiving a shift signal indicative of a desired change in a direction of travel of the machine. The method selectively activates at least one supplementary retarding device based at least on one of the inclination angle and the speed of the machine. | 06-30-2016 |
| 20180023693 | TRANSMISSION CONTROL DEVICE FOR AUTOMATIC TRANSMISSION | 01-25-2018 |
