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公开(公告)号：US11498566B2
公开(公告)日：2022-11-15
申请号：US16928707
申请日：2020-07-14
发明人： Fengyi Chen , Yijing Zhang , Bradley Dean Riedle , Weitian Chen , Yuji Fujii
IPC分类号： B60W30/188 , B60W50/00 , B60W40/10
摘要： A vehicle includes a transmission, a powerplant, an inertial measurement unit, and a controller. The transmission has an input shaft and an output shaft. The powerplant is configured to generate and deliver torque to the input shaft. The inertial measurement unit is configured to measure inertial forces exerted onto the vehicle. The controller is programmed to, in response to a demanded torque at the output shaft and a non-transient condition of the vehicle, control the torque at the output shaft based on a torque at the input shaft and a gear ratio of the step-ratio transmission. The controller is further programmed to, in response to the demanded torque at the output shaft and a transient condition of the vehicle, control the torque at the output shaft based on the inertial forces and a vehicle velocity.
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公开(公告)号：US20220309845A1
公开(公告)日：2022-09-29
申请号：US17212439
申请日：2021-03-25
发明人： Huanyi Shui , Yijing Zhang , Hang Yang , Devesh Upadhyay , Hiral Jayantilal Haria , Yuji Fujii
IPC分类号： G07C5/08 , B60W30/188
摘要： A vehicle includes an engine, a clutch, and a controller. The clutch is configured to crank the engine during an engine start. The controller is programmed to, in response to a command to start the engine, adjust a clutch actuator pressure to drive a disconnect clutch torque toward a desired value. The controller is further programmed to, in response to variances of the disconnect clutch torque relative to the clutch actuator pressure exceeding a threshold, issue a disconnect clutch fault.
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公开(公告)号：US20220269834A1
公开(公告)日：2022-08-25
申请号：US17181379
申请日：2021-02-22
发明人： Hang Yang , Huanyi Shui , Yijing Zhang , Hiral Jayantilal Haria , Bradley Dean Riedle , Yuji Fujii
摘要： A method of producing a disconnect clutch includes producing a disconnect clutch, configured to selectively connect an engine and an electric machine, such that the disconnect clutch exhibits a clutch transfer function that causes a transmission output shaft torque variability that is less than a predetermined threshold during a simulated starting of the engine using the electric machine.
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公开(公告)号：US20220017065A1
公开(公告)日：2022-01-20
申请号：US16928707
申请日：2020-07-14
发明人： Fengyi Chen , Yijing Zhang , Bradley Dean Riedle , Weitian Chen , Yuji Fujii
摘要： A vehicle includes a transmission, a powerplant, an inertial measurement unit, and a controller. The transmission has an input shaft and an output shaft. The powerplant is configured to generate and deliver torque to the input shaft. The inertial measurement unit is configured to measure inertial forces exerted onto the vehicle. The controller is programmed to, in response to a demanded torque at the output shaft and a non-transient condition of the vehicle, control the torque at the output shaft based on a torque at the input shaft and a gear ratio of the step-ratio transmission. The controller is further programmed to, in response to the demanded torque at the output shaft and a transient condition of the vehicle, control the torque at the output shaft based on the inertial forces and a vehicle velocity.
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公开(公告)号：US10344851B2
公开(公告)日：2019-07-09
申请号：US15633927
申请日：2017-06-27
发明人： Hiral Jayantilal Haria , Yuji Fujii , Gregory Michael Pietron , Rohit Hippalgaonkar , Todd Mccullough
IPC分类号： B60W10/115 , F16H61/02 , B60W30/19
摘要： During a transmission upshift, a torque capacity of an off-going clutch is maintained at a non-zero state during the transition from the torque phase to the inertia phase and throughout a substantial portion of the inertia phase. This permits the inertia phase to be completed faster without an unacceptable increase in output torque during the torque phase. Monotonically reducing the off-going clutch torque and using feedback from an output torque sensor enable sufficiently precise control of the off-going clutch torque capacity during this interval.
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6.发明申请公开(公告)号：US20190084576A1
公开(公告)日：2019-03-21
申请号：US16193714
申请日：2018-11-16
发明人： Christopher John Teslak , Gregory Michael Pietron , Hongtei Eric Tseng , Yuji Fujii , Michael Glenn Fodor , Diana Yanakiev , Seung-Hoon Lee
IPC分类号： B60W30/19 , B60W10/115 , F16H61/06 , F16D67/02 , F16H59/16 , B60W10/02 , B60W10/06 , B60W50/06 , B60W50/00 , F16H61/04
摘要： A control system and method for controlling a multiple gear ratio automatic transmission in a powertrain for an automatic transmission having pressure activated fiction torque elements to effect gear ratio upshifts. The friction torque elements are synchronously engaged and released during a torque phase of an upshift event as torque from a torque source is increased while allowing the off-going friction elements to slip, followed by an inertia phase during which torque from a torque source is modulated. A perceptible transmission output torque reduction during an upshift is avoided. Measured torque values are used during a torque phase of the upshift to correct an estimated oncoming friction element target torque so that transient torque disturbances at an oncoming clutch are avoided and torque transients at the output shaft are reduced.
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公开(公告)号：US09829411B2
公开(公告)日：2017-11-28
申请号：US15068005
申请日：2016-03-11
发明人： Yuji Fujii , Gregory Michael Pietron , Diana Yanakiev , Eric Hongtei Tseng , Vladimir Ivanovic , Jau-Wen Tseng
CPC分类号： G01M13/022 , F16D48/06 , F16D2500/3024 , F16D2500/30412 , F16D2500/30421 , F16D2500/3056 , F16D2500/3166 , F16D2500/3168 , F16D2500/525 , F16D2500/702 , F16D2500/7044 , F16D2500/70448 , F16D2500/70605 , F16D2500/70673 , F16D2500/7082 , F16H61/061 , F16H2061/0037 , F16H2061/0068 , F16H2061/0087 , F16H2061/0093 , F16H2061/064
摘要： A bench test calibration method for generating wet clutch torque transfer functions includes obtaining in-vehicle clutch torques at a set of shift conditions; performing a series of bench tests at various clutch pack clearances and lubrication oil flow rates at the set of shift conditions; adjusting clutch pack clearances and lubrication oil flow rates during the series of bench tests in response to a difference between a bench test measured clutch torques and the corresponding in-vehicle clutch torques exceeding a threshold; and recording relationships between first bench test measured torques and force profiles of a clutch actuator relative to the adjusted clutch pack clearances and lubrication oil flow rates for each of the set of shift conditions as a first transfer function.
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公开(公告)号：US09631722B2
公开(公告)日：2017-04-25
申请号：US14475693
申请日：2014-09-03
发明人： Gregory Michael Pietron , Nimrod Kapas , Joseph F. Kucharski , Steven Adam Hermann , Christopher Gregory Garbacz , Yuji Fujii , Diana Yanakiev , Roberto Teran, Jr.
CPC分类号： F16H61/0213 , F16H61/68 , G01L3/10 , G01L3/101 , G01L11/025
摘要： A transmission includes sensors positioned adjacent respective pairs of magnetized bands on a shaft of the transmission for detecting magnetic flux emanating from the bands in response to torque on the shaft. The transmission further includes an electronics interface assembly configured to respectively provide drive signals to the sensors and to receive from the sensors, in response to the drive signals, output signals indicative of the torque on the shaft as detected by the sensors.
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公开(公告)号：US20160185338A1
公开(公告)日：2016-06-30
申请号：US15063268
申请日：2016-03-07
发明人： Jeffrey Allen Doering , Alex O`Connor Gibson , Gregory Michael Pietron , James William Loch McCallum , Yuji Fujii
CPC分类号： B60W30/18018 , B60K6/48 , B60K6/52 , B60K17/28 , B60K2006/4825 , B60W10/02 , B60W10/023 , B60W10/026 , B60W10/06 , B60W10/08 , B60W10/26 , B60W10/30 , B60W20/10 , B60W20/13 , B60W20/40 , B60W30/02 , B60W30/18 , B60W30/18045 , B60W30/18063 , B60W2510/1005 , B60W2520/403 , B60W2540/12 , B60W2540/16 , B60W2710/021 , B60W2710/024 , B60W2710/027 , B60W2710/065 , B60W2710/083 , B60Y2200/92 , B60Y2300/188 , B60Y2300/42 , B60Y2300/421 , B60Y2300/43 , B60Y2300/60 , F01P3/00 , F02D41/065 , F02N11/003 , F02N11/04 , F02N11/0833 , F02N11/084 , F02N2200/124 , Y02T10/48 , Y02T10/6221 , Y02T10/6252 , Y02T10/6265 , Y02T10/6286 , Y10S477/90 , Y10S903/916 , Y10S903/93 , Y10T477/20 , Y10T477/23 , Y10T477/24 , Y10T477/26 , Y10T477/27 , Y10T477/71 , Y10T477/73 , Y10T477/75
摘要： Systems and methods for improving operation of a hybrid vehicle are presented. In one example, driveline operation may be adjusted in response to operating the hybrid vehicle in a four wheel drivel low gear range. The approaches may improve vehicle drivability and reduce driveline degradation.
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公开(公告)号：US09321457B2
公开(公告)日：2016-04-26
申请号：US14834339
申请日：2015-08-24
发明人： Alexander O'Connor Gibson , Felix Nedorezov , Jeffrey Allen Doering , Hong Jiang , Seung-Hoon Lee , James William Loch McCallum , Gregory Michael Pietron , Yuji Fujii
CPC分类号： B60W20/40 , B60K6/48 , B60W10/02 , B60W10/026 , B60W10/08 , B60W30/20 , B60W2030/206 , B60W2510/02 , B60W2510/0638 , B60W2510/1015 , B60W2710/021 , B60W2710/027 , B60W2710/06 , B60W2710/0644 , B60W2710/081 , B60Y2200/92 , B60Y2300/18083 , B60Y2300/49 , B60Y2400/426 , F02N11/00 , F02N11/0851 , Y02T10/6221 , Y10S903/902 , Y10S903/903 , Y10T477/26 , Y10T477/71
摘要： Systems and methods for improving operation of a hybrid vehicle are presented. In one example, application of a driveline disconnect clutch to start an engine is described. The approach applies the driveline disconnect clutch to rotate an engine and at least partially disengages the driveline disconnect clutch to reduce the possibility of a reduction in torque applied to vehicle wheels.
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