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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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公开(公告)号：US09945300B2
公开(公告)日：2018-04-17
申请号：US14668056
申请日：2015-03-25
发明人： Rohit Hippalgaonkar , Joseph F. Kucharski , Yuji Fujii , Gregory Michael Pietron , Jason Meyer , Eric Hongtei Tseng
CPC分类号： F02D29/02 , F02D2200/1004 , F16H59/42 , F16H63/502 , F16H2059/148 , F16H2061/124 , F16H2063/508
摘要： A method of operating a vehicle includes measuring a transmission output torque, measuring impeller and turbine speeds, estimating a transmission component torque, and adjusting an engine torque to avoid overstressing a transmission component such as a gear. The method does not rely on an accurate estimate of engine torque. Furthermore, the method does not rely on a fixed transmission torque rating in each gear ratio.
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公开(公告)号：US20160281616A1
公开(公告)日：2016-09-29
申请号：US14668056
申请日：2015-03-25
发明人： Rohit Hippalgaonkar , Joseph F. Kucharski , Yuji Fujii , Gregory Michael Pietron , Jason Meyer , Eric Hongtei Tseng
CPC分类号： F02D29/02 , F02D2200/1004 , F16H59/42 , F16H63/502 , F16H2059/148 , F16H2061/124 , F16H2063/508
摘要： A method of operating a vehicle includes measuring a transmission output torque, measuring impeller and turbine speeds, estimating a transmission component torque, and adjusting an engine torque to avoid overstressing a transmission component such as a gear. The method does not rely on an accurate estimate of engine torque. Furthermore, the method does not rely on a fixed transmission torque rating in each gear ratio.
摘要翻译： 一种操作车辆的方法包括测量变速器输出扭矩，测量叶轮和涡轮机速度，估计变速部件扭矩，以及调整发动机扭矩以避免对诸如齿轮的变速部件的过应力。 该方法不依赖于发动机扭矩的准确估计。 此外，该方法不依赖于每个传动比中的固定传动转矩额定值。
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公开(公告)号：US10451125B2
公开(公告)日：2019-10-22
申请号：US15674788
申请日：2017-08-11
发明人： Gregory Michael Pietron , Qi Wang , Yuji Fujii , Rohit Hippalgaonkar , Joseph F. Kucharski , Jason Meyer , Stuart N. Ford
摘要： A vehicle includes a transmission and a controller. The transmission has clutches that are configured to establish multiple speed ratios, including a first clutch. The first clutch has a measured drag torque distribution. The measured drag torque distribution has a median and a standard deviation. The controller is programmed to increase a pressure at a rate to engage the first clutch and to increase the rate in response to a measured first clutch torque exceeding the median by a predetermined multiple of the standard deviation.
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公开(公告)号：US20180372214A1
公开(公告)日：2018-12-27
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： F16H61/02
CPC分类号： F16H61/0204 , B60W10/115 , B60W30/19 , B60W2510/105 , F16H61/0437 , F16H61/686 , F16H2200/2012 , F16H2200/2046 , F16H2306/22 , F16H2306/44 , F16H2306/46 , F16H2306/50 , F16H2306/52 , Y10T477/6937
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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公开(公告)号：US11752826B2
公开(公告)日：2023-09-12
申请号：US17670750
申请日：2022-02-14
发明人： Matthew Johnson , Keith Weston , Jonathan Sullivan , David Michael Russell , Rohit Hippalgaonkar
IPC分类号： B60G17/016 , B60G21/10 , B60G17/0195 , B60G17/052
CPC分类号： B60G17/016 , B60G17/0195 , B60G21/106 , B60G17/052 , B60G2202/152 , B60G2400/204 , B60G2400/208 , B60G2400/25 , B60G2500/10 , B60G2500/201 , B60G2600/04 , B60G2600/16 , B60G2600/602
摘要： A method of controlling a vehicle may include determining a proximity to a stuck condition based on measured vehicle motion parameters and a wheel speed measured by a wheel speed sensor associated with one or more wheels of the vehicle. The method may further include generating a notification to a driver of the vehicle in response to the proximity to the stuck condition indicating that the vehicle is either in a stuck condition or a nearly stuck condition, and responsive to driver selection of an unstuck mode, executing an unstuck algorithm to automatically control operation of the vehicle to achieve a free condition.
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公开(公告)号：US20230256786A1
公开(公告)日：2023-08-17
申请号：US17670750
申请日：2022-02-14
发明人： Matthew Johnson , Keith Weston , Jonathan Sullivan , David Michael Russell , Rohit Hippalgaonkar
IPC分类号： B60G17/016 , B60G21/10 , B60G17/0195
CPC分类号： B60G17/016 , B60G21/106 , B60G17/0195 , B60G2400/208 , B60G2400/25 , B60G2500/10 , B60G2500/201 , B60G2202/152 , B60G17/052
摘要： A method of controlling a vehicle may include determining a proximity to a stuck condition based on measured vehicle motion parameters and a wheel speed measured by a wheel speed sensor associated with one or more wheels of the vehicle. The method may further include generating a notification to a driver of the vehicle in response to the proximity to the stuck condition indicating that the vehicle is either in a stuck condition or a nearly stuck condition, and responsive to driver selection of an unstuck mode, executing an unstuck algorithm to automatically control operation of the vehicle to achieve a free condition.
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公开(公告)号：US09951827B2
公开(公告)日：2018-04-24
申请号：US15067950
申请日：2016-03-11
CPC分类号： F16D25/123 , F16D48/06 , F16D2500/3067 , F16D2500/50251 , F16D2500/50287 , F16D2500/506 , F16H3/66 , F16H45/02 , F16H47/08 , F16H57/0473 , F16H57/0484 , F16H2200/0052 , F16H2200/201 , F16H2200/2043 , F16H2200/2066 , F16H2200/2082 , F16H2342/04 , G01M13/02
摘要： A method of determining automatic transmission lubrication fluid flow rates corresponding to a running vehicle without direct oil flow measurements is disclosed. A set of in-vehicle clutch torques for a chosen clutch pack during a gear shift event for a set of shift conditions is obtained. A series of bench tests at various clutch-pack clearances and oil-flow rates for the set of shift conditions are performed. The clearances and oil-flow rates are adjusted in response to the measured magnitudes exceeding thresholds. In-vehicle transmission lubrication oil-flow rates are estimated at the chosen clutch pack for the set of shift conditions when the bench-test and in-vehicle clutch torques are less than the thresholds. The steps are reproduced for other engine conditions and fluid temperatures corresponding to other transmission gear positions. A functional map of in-vehicle oil flow rates are produced, and the transmission is adjusted based on the map.
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公开(公告)号：US09709164B2
公开(公告)日：2017-07-18
申请号：US14668062
申请日：2015-03-25
发明人： Rohit Hippalgaonkar , Eric Hongtei Tseng , Yuji Fujii , Gregory Michael Pietron , James William Loch McCallum , Jason Meyer , Michael John Leads , Joseph F. Kucharski
CPC分类号： F16H61/12 , F16H59/14 , F16H2059/147 , F16H2059/148 , F16H2061/0087 , F16H2061/0093 , F16H2061/124 , F16H2061/1276
摘要： A method of operating a transmission includes measuring an output torque, estimating a gearbox input torque using a model, and estimating gearbox component torques based on a detailed gearbox model. The model used to estimate the input torque varies depending on whether a torque converter is locked, open, or slipping. In some operating conditions, multiple estimates are available for gearbox input torque, impeller torque, or shift element torque in which case the models are adapted. When an estimated component torque is outside an expected range, a warning flag is raised and diagnostic data is saved. When an estimated torque approaches or exceeds a torque limit, the input torque command may be reduced to prevent component damage. A warning flag may also be raised and diagnostic data saved in response to a model parameter being adapted to a value outside of a predetermined range.
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公开(公告)号：US20160281846A1
公开(公告)日：2016-09-29
申请号：US14668062
申请日：2015-03-25
发明人： Rohit Hippalgaonkar , Eric Hongtei Tseng , Yuji Fujii , Gregory Michael Pietron , James William Loch McCallum , Jason Meyer , Michael John Leads , Joseph F. Kucharski
IPC分类号： F16H61/12 , F16H61/686 , F16H61/04 , F16H59/14
CPC分类号： F16H61/12 , F16H59/14 , F16H2059/147 , F16H2059/148 , F16H2061/0087 , F16H2061/0093 , F16H2061/124 , F16H2061/1276
摘要： A method of operating a transmission includes measuring an output torque, estimating a gearbox input torque using a model, and estimating gearbox component torques based on a detailed gearbox model. The model used to estimate the input torque varies depending on whether a torque converter is locked, open, or slipping. In some operating conditions, multiple estimates are available for gearbox input torque, impeller torque, or shift element torque in which case the models are adapted. When an estimated component torque is outside an expected range, a warning flag is raised and diagnostic data is saved. When an estimated torque approaches or exceeds a torque limit, the input torque command may be reduced to prevent component damage. A warning flag may also be raised and diagnostic data saved in response to a model parameter being adapted to a value outside of a predetermined range.
摘要翻译： 操作变速器的方法包括测量输出转矩，使用模型估计变速箱输入转矩，以及基于详细的变速箱模型来估计变速箱分量转矩。 用于估计输入转矩的模型取决于变矩器是否锁定，打开或滑动。 在某些操作条件下，齿轮箱输入扭矩，叶轮扭矩或换档元件扭矩可用于多种估计，在这种情况下，适用型号。 当估计的分量转矩超出预期范围时，会提醒警告标志并保存诊断数据。 当估计转矩接近或超过转矩极限时，可以减小输入转矩指令以防止元件损坏。 还可以提出警告标志，并且响应于模型参数保存的诊断数据适应于超出预定范围的值。
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