Patent application number | Description | Published |
20100188040 | PLUG-IN NON-HYBRID-ELECTRIC VEHICLE FOR INCREASED FUEL EFFICIENCY - A system for a vehicle including an internal combustion engine configured to provide the exclusive source of motive power to the vehicle, an energy storage device coupled to an electrical system, and a charging interface coupled to the energy storage device, the charging interface configured to attach to an external charging device. | 07-29-2010 |
20110213547 | Method for Adjusting Engine Air-Fuel Ratio - A method for adjusting an air-fuel ratio of an engine is disclosed. In one example, the engine air-fuel ratio is adjusted in response to a duty cycle and frequency of a post catalyst oxygen sensor. The method may improve catalyst efficiency. | 09-01-2011 |
20120255281 | Method for Adjusting Engine Air-Fuel Ratio - A method for adjusting an air-fuel ratio of an engine is disclosed. In one example, the engine air-fuel ratio is adjusted in response to a duty cycle and frequency of a post catalyst oxygen sensor. The method may improve catalyst efficiency. | 10-11-2012 |
20130291830 | METHODS AND SYSTEMS FOR ENGINE STARTING DURING A SHIFT - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, torque demand of a driveline after a shift is forecast to determine if it is desirable to start the engine early so that engine torque is available after the shift. The approach may improve vehicle torque response. | 11-07-2013 |
20130296118 | METHODS AND SYSTEMS FOR A VEHICLE DRIVELINE - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, driveline operating modes may be manually selected to improve hybrid driveline operation during off road conditions. The approaches may improve vehicle drivability and reduce driveline degradation. | 11-07-2013 |
20130296119 | METHODS AND SYSTEMS FOR CONDITIONALLY ENTERING A DRIVELINE SAILING MODE - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, a driveline may selectively enter a sailing mode to provide quick driveline torque response with reduced impact on fuel economy. | 11-07-2013 |
20130296120 | METHODS AND SYSTEMS FOR DRIVELINE SAILING MODE ENTRY - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, entry conditions for entering a driveline sailing mode are described. Driveline sailing mode may improve driveline torque response and vehicle drivability. | 11-07-2013 |
20130296121 | METHODS AND SYSTEMS FOR ENGINE STOPPING - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine is stopped to a desired position via slipping a driveline disconnect clutch so that engine starting may be improved. | 11-07-2013 |
20130296122 | METHODS AND SYSTEMS FOR OPERATING A VEHICLE DRIVELINE RESPONSIVE TO EXTERNAL CONDITIONS - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, external data are a basis for operating a driveline disconnect clutch. For example, a vehicle destination may be a basis for opening a driveline disconnect clutch and beginning to discharging an energy storage device so that fewer hydrocarbons may be consumed by the vehicle. | 11-07-2013 |
20130296123 | METHODS AND SYSTEMS FOR ADAPTING A DRIVELINE DISCONNECT CLUTCH TRANSFER FUNCTION - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, a transfer function of a driveline disconnect clutch is adapted. | 11-07-2013 |
20130296126 | METHODS AND SYSTEMS FOR ENGINE CRANKING - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine may be started in one of two ways depending on operating conditions. In particular, the engine may be started via a lower power output electric machine or a higher power output electric machine. | 11-07-2013 |
20130296132 | METHODS AND SYSTEMS FOR ADJUSTING DRIVELINE DISCONNECT CLUTCH OPERATION - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, torque transferred via a driveline disconnect clutch is estimated based on characteristics of a torque converter to improve driveline operation. | 11-07-2013 |
20130297112 | METHODS AND SYSTEMS FOR A HYBRID VEHICLE - Systems and methods for learning torque estimate errors and updating torque estimation models are presented. In one example, torque errors are learned during an engine shut-down, after a disconnect clutch coupled between an engine and an electric machine has been released. An updated torque estimation model is then used to control torque during subsequent engine operation to improve drive feel and vehicle performance. | 11-07-2013 |
20130297113 | METHODS AND SYSTEMS FOR A HYBRID VEHICLE - Systems and methods for learning torque estimate errors and updating torque estimation models are presented. In one example, torque errors are learned during an engine shut-down, after a disconnect clutch coupled between an engine and an electric machine has been released. An updated torque estimation model is then used to control torque during subsequent engine operation to improve drive feel and vehicle performance. | 11-07-2013 |
20130297114 | METHODS AND SYSTEMS FOR TRANSITIONING BETWEEN DRIVELINE BRAKING MODES - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, a method for transitioning between regenerative braking and engine braking is described. | 11-07-2013 |
20130297115 | METHODS AND SYSTEMS FOR OPERATING A DRIVELINE DISCONNECT CLUTCH RESPONSIVE TO ENGINE OPERATING CONDITIONS - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, a driveline disconnect clutch transfer function may be adapted in response to engine operating conditions during closing of the driveline disconnect clutch. | 11-07-2013 |
20130297116 | METHODS AND SYSTEMS FOR OPERATING A VEHICLE DRIVELINE - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine is accelerated to a speed of a driveline integrated starter/generator before the engine is coupled to the driveline integrated starter/generator. | 11-07-2013 |
20130297117 | METHODS AND SYSTEMS PROVIDING DRIVELINE BRAKING - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, driveline braking may transition from regenerative braking to engine braking to reduce the possibility of battery degradation. | 11-07-2013 |
20130297118 | METHODS AND SYSTEMS FOR LAUNCHING A VEHICLE - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine is started and idled before engine torque is required so that driveline torque response may be improved. | 11-07-2013 |
20130297119 | METHODS AND SYSTEMS FOR ADJUSTING DRIVELINE OPERATION DURING AN ACCELERATOR TIP-OUT - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine may be operated at an idle speed while a driveline disconnect clutch separating the engine from a driveline is open in response to a reduction in driver demand torque. Engine torque may be applied to the driveline by simply closing the driveline disconnect clutch. | 11-07-2013 |
20130297120 | METHODS AND SYSTEMS FOR PROVIDING UNIFORM DRIVELINE BRAKING - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, negative torque of an electric machine is adjusted to mimic negative torque of an engine during engine braking so that the vehicle may transition from regenerative braking to engine braking in a seamless manner. | 11-07-2013 |
20130297121 | METHODS AND SYSTEMS FOR DRIVELINE MODE TRANSITIONS - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, a method for transitioning between regenerative braking and providing positive torque to a driveline is presented. | 11-07-2013 |
20130297123 | METHODS AND SYSTEMS FOR REDUCING GEAR LASH NOISE - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, driveline gear lash gear tooth to gear tooth impact may be reduce via adjusting operation of an electric machine. | 11-07-2013 |
20130297157 | METHODS AND SYSTEMS FOR IMPROVING TRANSMISSION SHIFTING - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine is couple to a transmission in response to a transmission upshift to reduce transmission output shaft torque disturbances. | 11-07-2013 |
20130297187 | METHODS AND SYSTEMS FOR ADJUSTING CYLINDER AIR CHARGE - Systems and methods for improving operation of an engine are presented. In one example, a position of a throttle is adjusted along with other actuators to improve engine starting. | 11-07-2013 |
20140100082 | METHOD AND SYSTEM FOR STOPPING AN ENGINE - A method and a system for improving operation of a hybrid vehicle are presented. In one example, a disconnect clutch is operated in response to an engine stop request to adjust an engine stopping position during an engine shutdown. The approach may reduce engine starting time after the engine stop. | 04-10-2014 |
20140106927 | METHOD AND SYSTEM FOR IMPROVING VEHICLE LAUNCH - A method and a system for improving operation of a hybrid vehicle are presented. In one example, a clutch is operated while a vehicle is stopped and while a vehicle brake is applied to determine a clutch torque transfer function. The approach may improve vehicle launch after an engine stop. | 04-17-2014 |
20140121060 | METHOD AND SYSTEM FOR CONTROLLING CATALYST TEMPERATURE - A method and a system for improving operation of a hybrid vehicle are presented. In one example, an engine exhaust after treatment device is cooled at an opportunistic time. The approach may provide improved cooling for exhaust after treatment devices and it may also improve vehicle emissions. | 05-01-2014 |
20140162838 | METHOD AND SYSTEM FOR ADJUSTING HYBRID VEHICLE DRIVELINE TORQUE - Methods and systems for improving operation of a hybrid vehicle are presented. In one example, an engine torque estimate may be adapted in response to a torque converter impeller speed error. The methods and systems may reduce the possibility of driveline torque disturbances. | 06-12-2014 |
20140163787 | METHOD AND SYSTEM FOR ADAPTING OPERATION OF A HYBRID VEHICLE TRANSMISSION TORQUE CONVERTER LOCKUP CLUTCH - A method and a system for improving operation of a hybrid vehicle are presented. In one example, operation of a transmission torque converter lockup clutch is adjusted to improve engine starting control. The approach may improve engine starting and vehicle drivability. | 06-12-2014 |
20140163788 | METHOD AND SYSTEM FOR IMPROVING HYBRID VEHICLE SHIFTING - A method and a system for improving operation of a hybrid vehicle are presented. In one example, torque converter impeller torque from beginning to end of transmission shifting is adjusted in response to variable driveline inertia. The approach may improve transmission shifting and reduce driveline torque disturbances. | 06-12-2014 |
20140200794 | METHODS AND SYSTEMS FOR A HYBRID VEHICLE - Systems and methods for learning torque estimate errors and updating torque estimation models are presented. In one example, torque errors are learned during an engine shut-down, after a disconnect clutch coupled between an engine and an electric machine has been released. An updated torque estimation model is then used to control torque during subsequent engine operation to improve drive feel and vehicle performance. | 07-17-2014 |
20140222273 | METHODS AND SYSTEMS FOR A HYBRID VEHICLE - Systems and methods for learning torque estimate errors and updating torque estimation models are presented. In one example, torque errors are learned during an engine shut-down, after a disconnect clutch coupled between an engine and an electric machine has been released. An updated torque estimation model is then used to control torque during subsequent engine operation to improve drive feel and vehicle performance. | 08-07-2014 |
20140309080 | METHOD AND SYSTEM FOR CONTROLLING CATALYST TEMPERATURE - A method and a system for improving operation of a hybrid vehicle are presented. In one example, an engine exhaust after treatment device is cooled at an opportunistic time. The approach may provide improved cooling for exhaust after treatment devices and it may also improve vehicle emissions. | 10-16-2014 |
20140323266 | METHODS AND SYSTEMS FOR ADJUSTING DRIVELINE OPERATION DURING AN ACCELERATOR TIP-OUT - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine may be operated at an idle speed while a driveline disconnect clutch separating the engine from a driveline is open in response to a reduction in driver demand torque. Engine torque may be applied to the driveline by simply closing the driveline disconnect clutch. | 10-30-2014 |
20140323267 | METHODS AND SYSTEMS FOR DRIVELINE SAILING MODE ENTRY - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, entry conditions for entering a driveline sailing mode are described. Driveline sailing mode may improve driveline torque response and vehicle drivability. | 10-30-2014 |
20150045185 | METHODS AND SYSTEMS FOR CONTROLLING CATALYST TEMPERATURE - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, operation of a driveline disconnect clutch is based on temperature conditions of a catalyst. The driveline disconnect clutch may not be opened if catalyst temperature is greater than a threshold temperature so that the catalyst may be cooled. | 02-12-2015 |
20150072832 | METHODS AND SYSTEMS FOR OPERATING A VEHICLE DRIVELINE - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine is accelerated to a speed of a driveline integrated starter/generator before the engine is coupled to the driveline integrated starter/generator. | 03-12-2015 |
20150073644 | METHODS AND SYSTEMS FOR PROVIDING UNIFORM DRIVELINE BRAKING - Systems and methods for improving operation of a hybrid vehicle are presented. In one example, negative torque of an electric machine is adjusted to mimic negative torque of an engine during engine braking so that the vehicle may transition from regenerative braking to engine braking in a seamless manner. | 03-12-2015 |