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公开(公告)号：US10563610B2
公开(公告)日：2020-02-18
申请号：US16184375
申请日：2018-11-08
摘要： Methods and systems are provided for reducing port injection fuel errors by selectively reactivating a direct fuel injector. Responsive to an increase in driver demand received while delivering fuel to a cylinder via port injection only, wherein the increase in driver demand is received late in the port injection window, the port injection error is addressed by reactivating a direct injector on the same engine cycle and delivering at least a portion of the fuel mass corresponding to the error via the direct injector. Additionally, a portion of the fuel mass may be delivered by the port injector on the same engine cycle by extending the end of injection timing, if possible.
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公开(公告)号：US10077042B2
公开(公告)日：2018-09-18
申请号：US15180219
申请日：2016-06-13
发明人： Dennis Craig Reed , Joshua Nicholas Dewalt , Mary Catherine Farmer , Terry Gene Feldpausch , Peter Douglas Kuechler
CPC分类号： B60W20/15 , B60K6/48 , B60W2510/0208 , B60W2510/10 , B60W2710/02 , B60W2710/0666 , B60W2710/083 , F16H63/50 , F16H2059/147 , F16H2059/148
摘要： A system and method for controlling backlash in a vehicle powertrain includes the step of controlling a torque request of the powertrain with a first control strategy after an occurrence of a backlash predictor and before an occurrence of a backlash. Another step may be employed whereby the torque request is controlled with a second control strategy after the first control strategy and before the occurrence of the backlash such that a torque request level is below a highest torque request level obtained during the first control-strategy.
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3.发明公开公开(公告)号：US20230242090A1
公开(公告)日：2023-08-03
申请号：US17812383
申请日：2022-07-13
发明人： Maruthi Ravichandran , Judhajit Roy , Jason Meyer , Sassan Farahmand , Mary Catherine Farmer , Fazal Syed
CPC分类号： B60W20/15 , F02N11/0859 , F02N11/0851 , F02N11/04 , F02N2200/102 , F02N2200/105
摘要： Systems and methods for starting an internal combustion engine of a hybrid vehicle are presented. In one example, the internal combustion is started via closing a driveline disconnect clutch and limiting a torque output rate of an electric machine so that vehicle speed may increase continuously without decreasing during engine cranking and run-up periods.
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公开(公告)号：US20180266357A1
公开(公告)日：2018-09-20
申请号：US15981048
申请日：2018-05-16
CPC分类号： F02D41/3094 , F02D41/10 , F02D2200/60 , F02D2200/602
摘要： Methods and systems are provided for reducing port injection fuel errors by selectively reactivating a direct fuel injector. Responsive to an increase in driver demand received while delivering fuel to a cylinder via port injection only, wherein the increase in driver demand is received late in the port injection window, the port injection error is addressed by reactivating a direct injector on the same engine cycle and delivering at least a portion of the fuel mass corresponding to the error via the direct injector. Additionally, a portion of the fuel mass may be delivered by the port injector on the same engine cycle by extending the end of injection timing, if possible.
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公开(公告)号：US12128875B2
公开(公告)日：2024-10-29
申请号：US17937912
申请日：2022-10-04
发明人： Maruthi Ravichandran , Ravi Kumar Tumu , Kevin Ruybal , Justin Panhans , Fazal U. Syed , Mary Catherine Farmer
CPC分类号： B60W20/40 , B60W10/02 , B60W10/06 , B60W10/08 , B60W2510/0652 , B60W2510/0657 , B60W2510/083 , B60W2710/027 , B60W2710/0666 , B60W2710/083
摘要： Systems and methods for operating a driveline of a hybrid vehicle are presented. In one example, torque capacity of a driveline disconnect is coordinated with torque control of an electric machine immediately following engine starting. The electric machine and the driveline disconnect clutch may assist starting of an engine, or alternatively, the engine may be started via a starter motor.
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公开(公告)号：US20240109530A1
公开(公告)日：2024-04-04
申请号：US17937912
申请日：2022-10-04
发明人： Maruthi Ravichandran , Ravi Kumar Tumu , Kevin Ruybal , Justin Panhans , Fazal U. Syed , Mary Catherine Farmer
CPC分类号： B60W20/40 , B60W10/02 , B60W10/06 , B60W10/08 , B60W2510/0652 , B60W2510/0657 , B60W2510/083 , B60W2710/027 , B60W2710/0666 , B60W2710/083
摘要： Systems and methods for operating a driveline of a hybrid vehicle are presented. In one example, torque capacity of a driveline disconnect is coordinated with torque control of an electric machine immediately following engine starting. The electric machine and the driveline disconnect clutch may assist starting of an engine, or alternatively, the engine may be started via a starter motor.
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公开(公告)号：US10457291B1
公开(公告)日：2019-10-29
申请号：US15965293
申请日：2018-04-27
发明人： Mary Catherine Farmer , Dennis Craig Reed , Peter Douglas Kuechler , Terry Gene Feldpausch , Mitchell Thomas Fink
摘要： A vehicle includes a powertrain and a controller. The powertrain includes a powerplant. The controller is programmed to, responsive to a tip-in resulting in a powertrain torque direction reversal and upon obtaining a base value of a desired powertrain lash angle, adjust a powerplant torque schedule. The controller is then subsequently programmed to adjust the desired powertrain lash angle from the base to an adjusted value based on an observed powertrain lash angle that corresponds to a maximum powertrain acceleration during the tip-in.
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公开(公告)号：US10106145B2
公开(公告)日：2018-10-23
申请号：US15182002
申请日：2016-06-14
发明人： Dennis Craig Reed , Joshua Nicholas Dewalt , Mary Catherine Farmer , Terry Gene Feldpausch , Dimitar Petrov Filev , Peter Douglas Kuechler
摘要： A system and method for controlling backlash in a vehicle powertrain includes the step of controlling a torque request of the powertrain with a first control strategy after an occurrence of a backlash predictor and prior to an occurrence of backlash. The first control strategy is modified when backlash occurs during the first control strategy. The torque request is controlled with the modified first control strategy after another occurrence of a backlash predictor and before another occurrence of backlash.
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公开(公告)号：US20190072051A1
公开(公告)日：2019-03-07
申请号：US16184375
申请日：2018-11-08
CPC分类号： F02D41/3094 , F02D41/10 , F02D2200/60 , F02D2200/602
摘要： Methods and systems are provided for reducing port injection fuel errors by selectively reactivating a direct fuel injector. Responsive to an increase in driver demand received while delivering fuel to a cylinder via port injection only, wherein the increase in driver demand is received late in the port injection window, the port injection error is addressed by reactivating a direct injector on the same engine cycle and delivering at least a portion of the fuel mass corresponding to the error via the direct injector. Additionally, a portion of the fuel mass may be delivered by the port injector on the same engine cycle by extending the end of injection timing, if possible.
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公开(公告)号：US10156201B2
公开(公告)日：2018-12-18
申请号：US15981048
申请日：2018-05-16
摘要： Methods and systems are provided for reducing port injection fuel errors by selectively reactivating a direct fuel injector. Responsive to an increase in driver demand received while delivering fuel to a cylinder via port injection only, wherein the increase in driver demand is received late in the port injection window, the port injection error is addressed by reactivating a direct injector on the same engine cycle and delivering at least a portion of the fuel mass corresponding to the error via the direct injector. Additionally, a portion of the fuel mass may be delivered by the port injector on the same engine cycle by extending the end of injection timing, if possible.
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