| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 477097000 | Control by sensed ambient condition, pattern indicia, external signal, or temperature | 44 |
| 20080234101 | Driving force distribution apparatus - A friction clutch which transmits motive power of a main drive shaft to an auxiliary drive shaft, a piston which generates pressing force against the friction clutch, a cylinder chamber which houses the piston movably in the axial direction, a pressure sensor which detects the oil pressure of the cylinder chamber, an hydraulic pump which feeds pressurized oil to the cylinder chamber, a motor which drive the hydraulic pump forward/reversely, and a controller which compares a command from a vehicle with a signal from the pressure sensor and controls the forward/reverse drive of the motor are provided. An hydraulic control valve unit feeds the pressurized oil to the cylinder chamber when the hydraulic pump is rotated forward, prevents outflow of the pressurized oil from the cylinder chamber when forward rotation of the hydraulic pump is stopped, and forcibly discharges the pressurized oil from the cylinder chamber when the hydraulic pump is reversely rotated. | 09-25-2008 |
| 20080305927 | Method for Controlling the Transmission of a Vehicle - Described is a method for controlling a transmission for motor vehicles, especially an automatic transmission or an automatic gearbox, where a gear ratio (“ | 12-11-2008 |
| 20090036267 | System and Method for Controlling Transmission Shift Points Based on Vehicle Weight - A system and method of controlling shift points of a transmission coupled to an internal combustion engine by modifying at least one transmission shift point schedule may comprise determining a weight of a vehicle carrying the engine and the transmission, modifying the at least one transmission shift point schedule as a function of the weight of the vehicle, and controlling automatic shifting between two or more gear ratios of the transmission in accordance with the modified at least one transmission shift point schedule. | 02-05-2009 |
| 20090062069 | TRANSMISSION CONTROL DEVICE OF MOTORCYCLE - A transmission control device of a motorcycle can detect a predetermined traveling state based on the difference in rotational speed between a front wheel and a rear wheel, and can execute a shift-change control suitable for the traveling state. A transmission control device of a motorcycle includes a shift-change control instruction part that performs an automatic shift change of an AMT (automatic manual transmission) in response to at least vehicle-speed information. A first sensor detects a rotational speed of a front wheel, which constitutes a driven wheel. A second sensor detects a rotational speed of a rear wheel, which constitutes a drive wheel. A rotational-speed-difference detector detects the difference in rotational speed between the front wheel and the rear wheel. The control part inhibits the automatic shift change when the rotational speed of the rear wheel becomes larger than the rotational speed of the front wheel by a predetermined value or more. | 03-05-2009 |
| 20090105043 | Power Output Apparatus, Control Method of Power Output Apparatus, and Vehicle Equipped With Power Output Apparatus - The drive control of the invention executed in a vehicle sets a correction coefficient keg, based on an intake air temperature and an atmospheric pressure reflecting the density of intake air supplied to an engine, and multiplies a power demand required for the vehicle by the set correction coefficient keg to specify a target engine power, which is to be output from the engine. The engine and two motors are then controlled to ensure output of the specified target engine power from the engine and output of a torque demand, which depends upon an accelerator opening. The varying density of the intake air may cause output of excessive power from the engine or output of insufficient power from the engine. A battery is charged or discharged to compensate for the excessive power output from the engine or for the insufficient power output from the engine. The drive control of the invention effectively deals with the environmental change and prevents the battery from being excessively charged with an unexpectedly high electric power or from being excessively discharged to supply an unexpectedly high electric power. | 04-23-2009 |
| 20090118089 | METHOD FOR LOAD-BASED STABILIZATION OF MODE AND FIXED GEAR OPERATION OF A HYBRID POWERTRAIN SYSTEM - A powertrain system includes an engine mechanically coupled to an electromechanical transmission selectively operative in one of a plurality of transmission operating range states and one of a plurality of engine states. A method for controlling the powertrain system includes determining a current transmission operating range state and engine state, determining at least one potential transmission operating range state and engine state, determining preferability factors associated with the current and potential transmission operating range state and the engine state wherein the preferability factors associated with potential transmission operating range states include load-stabilizing preferability factors, preferentially weighting the preferability factors for the current transmission operating range state and engine state, and selectively commanding changing the present transmission operating range state and engine state based upon the preferability factors. | 05-07-2009 |
| 20090131218 | CLUTCH CONTROL SYSTEM FOR TRANSMISSION - A clutch control system for a twin-clutch type automatic/manual transmission AMT includes a hydraulic pump for driving a first clutch and a second clutch and oil passages for transmitting oil pressures and an AMT control unit for controlling the supply of oil pressures into the oil passages. Upon detection of an engine starting operation, the AMT control unit performs an initial preparatory operation in which the oil pressures are supplied into the oil passages at different timings so as to fill up the oil passages with a working oil, thereby completing the preparations for driving of the clutches. When the oil pressure is supplied into the oil passage after a predetermined oil pressure is generated in the oil passage, the period of time taken for a first speed gear to become usable is shortened, whereby a swift vehicle starting after the starting of the engine can be achieved. | 05-21-2009 |
| 20090247359 | SHIFT CONTROL DEVICE FOR AUTOMATIC TRANSMISSION AND SHIFT CONTROL METHOD THEREOF - A shift control device comprises: a thermal load prediction unit which predicts a thermal load state of a friction element upon completion of a shift from a current thermal load state of the friction element; and a shift control unit which, when the thermal load state upon shift completion predicted by the thermal load prediction unit corresponds to a predetermined state, either performs the shift in a modified shift mode in which a heat generation amount of the friction element is smaller than the heat generation amount of the friction element when the predetermined state is not established, or prohibits the shift. The predetermined state is set at a different state in a case where the shift is an upshift and in a case where the shift is a downshift, and is set on the basis of a gradient of a traveling road. | 10-01-2009 |
| 20130102438 | Vehicle Speed Control System - A method of controlling an engine and a transmission coupled to the engine. The method including the steps of receiving and proceeding. The receiving step receives a signal value from a sensor. The signal value is representative of a desired ground engaging device speed of a vehicle. The proceeding step proceeds along a shift path defined by a one-to-one correspondence between the signal value and the ground engaging device speed. The proceeding step includes the steps of controlling a speed of the engine and selecting of a gear of the transmission along the shift path dependent upon the signal value. | 04-25-2013 |
| 20130225367 | Method For Setting Shift Points in a Transmission or for Increasing the Torque of an Electric Drive Machine - The invention concerns a method for setting shift points in an automated shift transmission or an automatic transmission of a vehicle driven by a motor, whereas the shift points can be displaced towards higher engine rotational speeds by activation of a kick-down function. | 08-29-2013 |
| 20130244832 | CONTROL SYSTEM HAVING POWERTRAIN LOCK - A powertrain control system is disclosed for use with a mobile machine. The powertrain control system may have an engine, and a continuously variable transmission operatively coupled to the engine. The powertrain control system may also have an operator input device configured to generate a signal indicative of a desired speed of the engine, a feature selector usable by an operator to select activation of a powertrain control feature, and a controller in communication with the engine, the continuously variable transmission, the operator input device, and the feature selector. The controller may be configured to make a determination that the operator has selected activation of the powertrain control feature via the feature selector, lock a speed of the engine based on the determination and the signal, and lock a torque output of the continuously variable transmission based on the determination and the locked speed of the engine. | 09-19-2013 |
| 20130252785 | SHIFT-BY-WIRE CONTROL SYSTEM - There is provided a shift-by-wire control system including a range switching device that switches engagement or disengagement of a forward engagement element and a reverse engagement element by using an actuator, a range switching operation unit by which a driver inputs a range switching operation, and a range switching control unit that controls the actuator of the range switching device on the basis of the state of the range switching operation unit. The shift-by-wire control system further includes vehicle start preparation state determination units for determining a vehicle start preparation state. When the vehicle start preparation state determination unit determines that the vehicle start preparation state is incomplete, the range switching control unit executes running prohibition control by which the forward engagement element and the reverse engagement element are all disengaged, regardless of the state of the range switching operation unit. | 09-26-2013 |
| 20140080668 | DECELERATION FUEL SHUT OFF SCHEDULING BASED ON VEHICLE PARAMETERS - A method for enacting DFSO in a motor vehicle having an engine and a transmission. The method includes, during a condition of normal engine-braking efficiency, disabling the DFSO below a higher gear of the transmission. During a condition of reduced engine-braking efficiency, by contrast, the DFSO is disabled below a lower gear of the transmission. | 03-20-2014 |
| 20140128221 | METHOD AND SYSTEM TO CONTROL VEHICLE OPERATION - Methods and systems are provided for performing a multiple gear downshift of a transmission gear by transiently operating in an intermediate gear. In response to ambient humidity and a condensate level in a charge air cooler, the transmission gear may be downshifted from a higher gear to an intermediate gear, and then to a requested lower gear. Downshifting through an intermediate gear may also be controlled based on the gear shift request. | 05-08-2014 |
| 20140155223 | SHIFT CONTROL DEVICE FOR CONTINUOUSLY-VARIABLE TRANSMISSION AND SHIFT CONTROL METHOD FOR CONTINUOUSLY-VARIABLE TRANSMISSION - A shift control device for a continuously-variable transmission has operation condition detecting means, which detect the operation conditions of a vehicle, a control means, which controls the transmission ratio of the continuously-variable transmission based on the operation conditions, an acceleration demand identifying means, which identifies whether acceleration is demanded by the driver, a linear mode setting means, which, based on the demand for acceleration, sets a linear mode, which provides the transmission ratio such that the input revolution speed of the continuously-variable transmission becomes high compared to a normal mode at the same vehicle speed, a front/rear G detecting means, which detects the front/rear G of the vehicle, and a linear mode cancelling means, which, when it is identified that acceleration is not demanded based on the front/rear G during drive in the linear mode, cancels the linear mode even under conditions to carry out the linear mode. | 06-05-2014 |
| 20160082970 | SYSTEM AND METHOD OF CONTROLLING SHIFT FOR VEHICLE - A system of controlling shift for a vehicle may include a data detector configured to detect data for a shift control; a road shape determiner configured to determine a road shape of an inclined road based on the data; an engine brake tendency determiner configured to determine an engine brake operating tendency of a driver based on the data; and an engine brake operating stage determiner configured to determine an engine brake operating stage based on the road slope and the engine brake operating tendency of the driver, wherein the system controls the shift according to the engine brake operating stage determined by the engine brake operating determiner. | 03-24-2016 |
| 20160160999 | SHIFT CONTROL DEVICE - [Object] To provide a shift control device that, in a shift control device of a vehicle equipped with an idling-stop mechanism and a shift-by-wire mechanism, is capable of preventing setting off at a timing that the driver does not expect when returning from an idling-stop state. | 06-09-2016 |
| 20160176404 | Transmission Fluid Control Systems And Methods For Engine Auto-Stops | 06-23-2016 |
| 20160201797 | METHOD AND APPARATUS FOR DOWNSHIFTING AN AUTOMATIC VEHICLE TRANSMISSION | 07-14-2016 |
| 477098000 | Temperature control | 25 |
| 20080312034 | METHOD AND SYSTEM FOR CONTROLLING TRANSMISSION TEMPERATURE - A method for controlling a transmission in a motor vehicle includes determining a temperature of a fluid in the transmission, determining whether the torque converter lockup clutch is applied, and determining an engine torque of the motor vehicle. Then, the torque converter lockup clutch is applied and the transmission is prohibited from up-shifting if the temperature of the fluid exceeds a threshold, the torque converter lockup clutch is not applied, and the engine torque exceeds a second threshold. Next, a tractive effort of the motor vehicle is determined and the torque converter lockup clutch is deactivated when the temperature of the fluid is less than a third threshold, the tractive effort is less than a fourth threshold, or the engine torque is less than the second threshold. | 12-18-2008 |
| 20090011901 | Oil warming strategy for transmission - A method is provided for increasing a temperature of oil in a continuously variable transmission during engine start-up, the transmission including a fluid pump and motor, and a mechanical transmission. The method includes starting the engine, maintaining the fluid pump at substantially zero displacement, and heating the transmission oil by relative rotation of a first clutch disc and first clutch hub of a first clutch assembly and by relative rotation of a second clutch disc and second clutch hub of a second clutch assembly. The method further includes maintaining a substantially zero net torque from the transmission during the heating of the oil by the first and second clutch assemblies. | 01-08-2009 |
| 20090017986 | Totally integrated temperature sensor - An idle control system for a vehicle is provided. | 01-15-2009 |
| 20090036268 | TRANSMISSION HEATER SYSTEM AND METHOD - A method for heating a transmission is provided. The transmission has at least one solenoid valve that hydraulically actuates a valve. The method includes the steps of measuring a transmission temperature, determining whether the transmission temperature is greater than or equal to a desired operating temperature, determining a currently selected gear ratio of the transmission, and overdriving at least one solenoid valve if the transmission has not achieved the desired operating temperature and if overdriving the solenoid valve will not disrupt the operation of the transmission for the currently selected gear ratio. | 02-05-2009 |
| 20090069151 | VALVE CONTROL SYSTEM - A solenoid control system for implementation with an electronic range selection (ETRS) system that shifts a transmission range between a park position and an out-of-park position. A first solenoid assembly is operable to control a fluid valve to supply pressurized fluid to urge a valve spool toward a first position. A second solenoid assembly is operable to control a fluid valve to supply pressurized fluid to urge said valve spool toward a second position. A control module selectively energizes one of the first and second solenoids based on a transmission fluid temperature. | 03-12-2009 |
| 20090082174 | SHIFT CONTROL DEVICE FOR AUTOMATIC TRANSMISSION AND CONTROL METHOD THEREOF - An automatic transmission calculates a current thermal load state of the frictional element, predicts (S | 03-26-2009 |
| 20090088294 | THERMAL PROTECTION OF AN ELECTRIC DRIVE SYSTEM - Temperature of an electric drive is regulated to prevent undesirable thermal effects. Temperature conditions of the electric drive system are monitored and torque of the electric drive system is limited based on the temperature conditions. | 04-02-2009 |
| 20090111651 | Transmission Temperature Sensing and Control - As one example, a propulsion system for a vehicle is provided, comprising: a propulsion device configured to provide mechanical work via a crankshaft; a transmission having an input shaft coupled with the crankshaft and an output shaft, wherein said transmission includes a plurality of selectable gear ratios between the input and output shaft; at least one drive wheel coupled with the output shaft; an actuation device configured to adjust the selected gear ratio of the transmission; and a control system configured to adjust an electrical signal provided to the actuation device to obtain an indication of a temperature dependent electrical parameter of the actuation device and to adjust the selected gear ratio of transmission by varying the signal provided to the actuation device in response to said indication. | 04-30-2009 |
| 20090118090 | METHOD AND APPARATUS TO CONTROL ENGINE TEMPERATURE FOR A HYBRID POWERTRAIN - An internal combustion engine is connected to a transmission to transmit tractive power to a driveline. Engine coolant temperature is determined, and power output of the engine is adjusted based upon the coolant temperature and preferred coolant temperature range. The transmission is controlled to transmit tractive power to the driveline to meet an operator torque request based upon the adjusted power output of the engine. | 05-07-2009 |
| 20090156357 | METHOD AND SYSTEM FOR RELEASING HYDRAULIC PRESSURE OF AUTOMATIC TRANSMISSION - The present invention relates to a method and a system for releasing hydraulic pressure of an automatic transmission that improve shift responsiveness and stability of hydraulic pressure control as a consequence of quickly supplying to a pressure control valve as feedback pressure a part of operating pressure that is supplied from the pressure control valve to an off-going element in a case of releasing the off-going element. The method for releasing hydraulic pressure of an automatic transmission according to an exemplary embodiment of the present invention may include: determining whether a shift signal is detected; calculating a delay time T | 06-18-2009 |
| 20090325760 | Ouput Torque Modulation Control of a Transmission in a Hybrid Electric Vehicle - In a powertrain for motor vehicle that includes an engine, an electric machine, a transmission having an input driveably connected to the engine and a transmission output driveably connected to the electric machine, and a powertrain output driveably connected to the electric machine and wheels of the vehicle, a method for controlling torque during a shift includes transmitting engine torque through the transmission to the powertrain output; during a shift, operating the electric machine to modify the torque transmitted to the powertrain output; and storing energy generated by the electric machine during the shift. | 12-31-2009 |
| 20100075802 | COLD START EMISSION REDUCTION STRATEGY FOR COORDINATED TORQUE CONTROL SYSTEMS - A cold-start control system for an internal combustion engine includes a heat estimation module, a torque request module and a propulsion torque determination module. The heat estimation module determines an exhaust system temperature and estimates heat required to heat an exhaust system to a predetermined temperature. The torque request module generates a torque request based on the estimated heat. The propulsion torque determination module determines a desired engine torque based on the torque request. | 03-25-2010 |
| 20110111920 | Powertrain Thermal Management System - The present disclosure relates to a thermal management system for a vehicle powertrain and a method for heating the transmission. Exemplary thermal management systems include a heater core, a transmission fluid warmer selectively in thermal communication with the heater core, a bypass valve between the heater core and transmission fluid warmer configured to control fluid flow therebetween, a control module configured to control the bypass valve, and a timer linked to the control module configured to delay deactivation of the bypass valve. | 05-12-2011 |
| 20110251019 | METHOD AND SYSTEM FOR CABIN HEATING - Methods and systems are provided for selectively increasing an amount of waste heat generated by an idling engine. An engine output is increased while a transmission output is locked to generate waste heat that may be used to heat the cabin of a stopped vehicle. | 10-13-2011 |
| 20120302400 | AUTOMATIC TRANSMISSION AND CONTROL METHOD THEREFOR - When the temperature of oil supplied to an electrical oil pump is detected and the oil temperature is lower or higher than normal oil temperature, a gradient threshold value smaller than that at normal oil temperature is set, a gradient of a road surface on which a vehicle is stopped is detected, and an idle stop is prohibited when the detected gradient of the road surface is larger than the set gradient threshold value. | 11-29-2012 |
| 20130079195 | APPARATUS AND METHOD FOR RAPID WARM-UP OF A COMBUSTION ENGINE - A transmission and a method for loading an engine in a vehicle. The transmission includes a gear set, an input shaft coupled to the gear set, and a plurality of friction elements coupled to the gear set. The transmission also includes a control system to direct a subset of the plurality of friction elements to engage the gear set to stall the input shaft thereby placing a load on the engine. The load causes additional heat that may be used to warm up the vehicle's passenger compartment and/or defrost the vehicle's windshield. | 03-28-2013 |
| 20130217540 | METHOD AND SYSTEM FOR CABIN HEATING - Methods and systems are provided for selectively increasing an amount of waste heat generated by an idling engine. An engine output is increased while a transmission output is locked to generate waste heat that may be used to heat the cabin of a stopped vehicle. | 08-22-2013 |
| 20130345021 | RATIO SHIFT CONTROL SYSTEM FOR AN AUTOMATIC TRANSMISSION - A ratio shift control system for an automatic transmission calculates the magnitude of a difference in temperature between a detected engine coolant temperature and a detected outside air temperature, which are detected by coolant and outside air temperature sensors, respectively, during one engine start of an internal combustion engine. Ratio shift in the automatic transmission is controlled based on the detected outside air temperature during the one engine start when the magnitude of the difference in temperature is equal to or less than a predetermined cold engine evaluation threshold. | 12-26-2013 |
| 20140128222 | PILOT DOWNSHIFTING SYSTEM AND METHOD - Methods and systems are provided for performing a multiple gear downshift of a transmission gear by transiently operating in an intermediate gear. In response to air mass flow not reaching a threshold for CAC self-cleansing for a set duration, the transmission gear may be downshifted from a higher gear to an intermediate gear, and then to a requested lower gear. Downshifting through an intermediate gear may also be controlled based on the gear shift request and maximum air mass flow levels for engine misfire. | 05-08-2014 |
| 20140187382 | ELECTRIC OIL PUMP SYSTEM AND CONTROL METHOD THEREOF - An electric oil pump system and a control method thereof include an electrical oil pump that is derated or the derating of the electrical oil pump is released according to a coil temperature of the electrical oil pump, and a torque of a transmission is control according to whether or not the electrical oil pump is derated. | 07-03-2014 |
| 20150018172 | SMART TRANSMISSION SHIFT DELAY METHOD AND SYSTEM FOR CLIMATE CONTROL FOR A VEHICLE - A method and system for the cancellation of transmission shift delay as a function of an optimum target temperature is disclosed. Once the pre-selected optimum target is achieved the shift delay is cancelled and the transmission is upshifted. Thus the disclosed inventive concept is based the cancellation of the shift delay on achieving climate control air conditioning comfort targets. Such comfort targets could include one or more of the measured HVAC evaporator temperature, the HVAC discharge temperature, or the in-vehicle cabin temperatures. When a temperature sensor measuring the selected temperature reaches the pre-selected target temperature the shift delay may be cancelled and the transmission may be upshifted, thus maximizing passenger comfort while minimizing fuel consumption. Having the shift delay based upon the achievement of specific measurable comfort targets in the form of target temperatures rather than a set time period allows optimization between cabin comfort and fuel efficiency. | 01-15-2015 |
| 20150080179 | TEMPERATURE MANAGEMENT SYSTEM FOR TRANSMISSION USING SPLIT ENGINE COOLING - A system for thermally managing a transmission having a transmission heat exchanger, wherein the transmission is coupled to an engine having a block and a head. A closed cooling circuit is provided to flow coolant through the system. A block output valve is provided for receiving coolant exiting the block and having a first outlet in fluid communication with the transmission heat exchanger and a second output connected to a bypass. Thermosensors may also be provided to determine the temperature of the block and the transmission. A system having a controller to thermally manage a transmission is also provided. A method of thermally managing a transmission is also provided. | 03-19-2015 |
| 20150377340 | CONTROL DEVICE - A control device including: an oil pump configured to be driven by an engine; an oil amount adjusting apparatus configured to adjust an oil level in an oil storage container of a vehicle automatic transmission; the oil amount adjusting apparatus including: a discharge tube provided upright on a bottom wall of the oil storage container in a liquid-tight manner; the discharge tube being configured to discharge oil that exceeds a discharge height that is defined by a height of the discharge tube; a controller configured to control the engine so as to obtain an oil surface height that is appropriate for adjustment of the oil level by the oil amount adjusting apparatus, the controller being configured to control a revolution number of the engine so as to maintain the oil surface height of the oil in a predetermined appropriate range regardless of a temperature of the oil. | 12-31-2015 |
| 20150377351 | SHIFT CONTROL SYSTEM FOR AUTOMATIC TRANSMISSION - A shift control device for shift controlling an automatic transmission in a powertrain drivingly connecting a power source, a hydraulic transmission element, and an automatic transmission in the mentioned order, has a hydraulic transmission element required output calculator that calculates a required output to be output from the hydraulic transmission element to the automatic transmission based on the output of the power source obtained from the slip condition between the input and output elements of the hydraulic transmission element and a total efficiency of the hydraulic transmission element, and a hydraulic transmission element total efficiency calculator that calculates, for each output rotation speed of the hydraulic transmission element, a speed ratio and a torque ratio between the input and output elements of the hydraulic transmission element, each being required for achieving the calculated hydraulic transmission element required output. | 12-31-2015 |
| 20180023493 | Method and System for Operating an Engine Start-Stop System in a Vehicle | 01-25-2018 |
