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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：US10180186B2
公开(公告)日：2019-01-15
申请号：US15135279
申请日：2016-04-21
发明人： Gregory Michael Pietron , Yuji Fujii , Joseph F. Kucharski , Nicholas Joseph Witte , Stephen Michael Cicala , Bradley Dean Riedle , Diana Yanakiev , Nimrod Kapas , Davorin David Hrovat
摘要： A transmission and control method are disclosed which ensure proper stroke pressure and minimize torque transients during a shift event. The transmission includes a clutch having a torque capacity based on a fluid pressure, a torque sensor adapted to measure a torque value that varies in relationship to the torque capacity, and a controller. The method includes varying the fluid pressure around a predetermined value, measuring a resulting torque difference with the torque sensor, and adjusting a clutch control parameter if the resulting torque difference is less than a threshold value.
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公开(公告)号：US10166980B2
公开(公告)日：2019-01-01
申请号：US13780948
申请日：2013-02-28
发明人： Yuji Fujii , Nimrod Kapas , Joseph F. Kucharski , Diana Yanakiev , Eric Hongtei Tseng , Jianbo Lu , Gregory Michael Pietron
摘要： A vehicle having a drivetrain is controlled based on a difference between a torque transmitted by the drivetrain when the vehicle has constant non-zero speed and the torque transmitted by the drivetrain when the vehicle is accelerating. The drivetrain torque may be measured by a drivetrain torque sensor. The effective vehicle mass is computed from the torque difference. The computed mass of the vehicle is used to adjust the activation of a collision warning system or a collision avoidance system. A method of operating a vehicle where the activation of a collision avoidance system is adjusted based on a difference between a torque transmitted by a drivetrain when the vehicle has constant non-zero speed and the torque transmitted by the drivetrain when the vehicle is accelerating is disclosed. The torque difference is used to compute a vehicle mass that is used to adjust a collision warning distance.
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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：US09618407B2
公开(公告)日：2017-04-11
申请号：US15016654
申请日：2016-02-05
发明人： Gregory Michael Pietron , Joseph F. Kucharski , Nimrod Kapas , Diana Yanakiev , Mark Richard Dobson , Yuji Fujii
IPC分类号： G01L3/10
CPC分类号： G01L3/101 , B60K17/28 , B60K17/344 , B60K25/06 , B60Y2400/307 , F16H3/091
摘要： Designs to package a magneto-elastic torque sensor in an automotive transmission for volume production applications are provided. A transfer case assembly includes a transfer case shaft having a magnetized region and a magnetic torque sensor, for detecting torque of the transfer case shaft, mounted on at least one bushing supporting the transfer case shaft. A drive axle assembly includes an axle housing, an input shaft having a magnetized region, and a magnetic torque sensor, for detecting torque of the input shaft, mounted to the axle housing.
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公开(公告)号：US09566977B2
公开(公告)日：2017-02-14
申请号：US14818678
申请日：2015-08-05
发明人： Alex O'Connor Gibson , James William Loch McCallum , Seung-Hoon Lee , Gregory Michael Pietron , Yuji Fujii
CPC分类号： B60W20/10 , B60K2006/4825 , B60W10/02 , B60W10/023 , B60W10/026 , B60W10/06 , B60W10/08 , B60W20/00 , B60W20/40 , B60W2510/0208 , B60W2510/0275 , B60W2510/06 , B60W2510/0638 , B60W2510/081 , B60W2540/00 , B60W2540/10 , B60W2710/021 , B60W2710/024 , B60W2710/025 , B60W2710/027 , B60W2710/06 , B60W2710/083 , Y02T10/6252 , Y02T10/6286 , Y10S903/902 , Y10S903/93 , Y10T477/26 , Y10T477/32 , Y10T477/328
摘要： Systems and methods for improving operation of a hybrid vehicle are presented. In one example, operation of a driveline disconnect clutch is adjusted to compensate for clutch wear and manufacturing tolerances.
摘要翻译： 介绍了改进混合动力车辆运行的系统和方法。 在一个示例中，调节传动系断开离合器的操作以补偿离合器磨损和制造公差。
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公开(公告)号：US09404571B2
公开(公告)日：2016-08-02
申请号：US14295470
申请日：2014-06-04
发明人： Gregory M. Pietron , Kevin D. Macfarlane , Diana Yanakiev , Joseph F. Kucharski , Bradley D. Riedle , Stephen M. Cicala , Yuji Fujii
CPC分类号： F16H61/04 , F16H3/663 , F16H61/061 , F16H61/26 , F16H2061/0075 , F16H2061/0087 , F16H2200/0052 , F16H2200/2007 , F16H2200/2023 , F16H2200/2043 , F16H2200/2097
摘要： A method of downshifting an automotive transmission. An on-coming transmission element is stroked while pressure for an off-going element is reduced. Pressure for the stroked on-coming element is increased to be sufficient to carry torque. Pressure for the off-going element is reduced below a torque transmitting amount once the stroked on-coming element has a sufficient torque carrying capacity. Torque capacities for the elements are determined from transmission output torque and acceleration and transmission input torque and acceleration. Feed forward or feedback terms for off-going and on-coming element torque capacities may be calculated using the transmission output torque, transmission input acceleration, and transmission input torque.
摘要翻译： 降低汽车变速器的方法。 随着传送元件被击打，同时减少了一个离开元件的压力。 触摸的进入元件的压力增加到足以承受扭矩。 一旦触摸的即将来到的元件具有足够的转矩承载能力，则离开元件的压力降低到低于转矩传递量的压力。 元件的转矩容量由变速器输出转矩和加速度以及变速箱输入转矩和加速度决定。 可以使用变速器输出扭矩，变速器输入加速度和变速器输入转矩来计算进给和进来的元件转矩容量的前馈或反馈条件。
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公开(公告)号：US09316198B2
公开(公告)日：2016-04-19
申请号：US14254798
申请日：2014-04-16
发明人： Alex O'Connor Gibson , Joseph Norman Ulrey , Gregory Michael Pietron , Seung-Hoon Lee , Yuji Fujii
CPC分类号： F02N15/02 , B60W10/06 , B60W10/113 , B60W10/30 , B60W30/18018 , F04B49/20 , F16H61/0021 , F16H2312/20 , Y10T477/636 , Y10T477/637 , Y10T477/641
摘要： Methods and systems are provided for pressurizing a transmission hydraulic circuit including a transmission mechanical pump coupled to an engine though a gearbox. One example method comprises, during an engine start, adjusting a speed ratio between the transmission pump and the engine between a first speed ratio and a second speed ratio, the pump rotating faster relative to the engine at the first speed ratio as compared with the second speed ratio. In this way, the pump may be driven at different speed ratios relative to the engine to provide better pressurization in the transmission.
摘要翻译： 提供了用于对包括通过齿轮箱联接到发动机的变速机械泵的变速器液压回路加压的方法和系统。 一个示例性方法包括：在发动机起动期间，在第一速度比和第二速度比之间调节传动泵和发动机之间的速比，与第二速比相比，泵以第一速度比相对于发动机转速更快 转速比。 以这种方式，可以相对于发动机以不同的速度比驱动泵，以在变速器中提供更好的加压。
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公开(公告)号：US20160068163A1
公开(公告)日：2016-03-10
申请号：US14945543
申请日：2015-11-19
CPC分类号： B60W30/19 , B60W10/02 , B60W10/06 , B60W20/40 , F16D48/06 , F16D2500/1082 , F16D2500/30401 , F16D2500/3065 , F16D2500/30814 , F16D2500/30818 , F16D2500/30822 , F16D2500/30827 , F16D2500/31413 , F16D2500/31453 , F16D2500/31466 , F16D2500/50287 , F16D2500/7041 , F16D2500/70426 , F16D2500/7044 , F16D2500/70458 , F16D2500/7061 , F16H63/46 , F16H2059/147 , Y10T74/2014
摘要： A method for controlling a manual transmission includes using a controller to determine a desired torque transmitted through an input clutch for the desired gear after a shift lever is moved to a desired gear position and while a clutch pedal is being released for engaging the clutch; inferring torque in the vehicle drive assembly; using inferred torque to determine clutch torque; and using the controller to automatically adjust a clutch actuator such that a difference between the desired torque and the inferred torque is reduced.
摘要翻译： 一种用于控制手动变速器的方法包括使用控制器在变速杆移动到期望的档位之后以及当离合器踏板被释放以便接合离合器时，确定通过用于所需档位的输入离合器传递的期望扭矩; 在车辆驱动组件中推断扭矩; 使用推定的扭矩来确定离合器扭矩; 并且使用所述控制器来自动调节离合器致动器，使得期望扭矩和所推断的扭矩之间的差减小。
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60.发明授权Clutch torque trajectory correction to provide torque hole filling during a ratio upshift 有权离合器扭矩轨迹校正，以提供换档期间的扭矩孔填充公开(公告)号：US09260102B2
公开(公告)日：2016-02-16
申请号：US14295411
申请日：2014-06-04
发明人： Christopher John Teslak , Gregory Michael Pietron , Hongtei Eric Tseng , Yuji Fujii , Michael Glenn Fodor , Diana Yanakiev , Seung-Hoon Lee
CPC分类号： B60W30/19 , B60W10/02 , B60W10/06 , B60W10/115 , B60W50/06 , B60W2050/0008 , B60W2050/0043 , B60W2510/0275 , B60W2510/105 , B60W2710/025 , B60W2710/027 , B60W2710/0666 , B60W2710/105 , F16D67/02 , F16H59/16 , F16H61/061 , F16H2061/0462 , Y10T477/641 , Y10T477/6425
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 friction 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.
摘要翻译： 一种控制系统和方法，用于控制用于具有压力激励摩擦转矩元件的自动变速器的动力系中的多传动比自动变速器，以实现齿轮比换档。 摩擦转矩元件在升档事件的扭矩阶段期间同步接合和释放，因为来自扭矩源的扭矩增加，同时允许不断的摩擦元件滑动，随后是来自扭矩源的扭矩被调制的惯性阶段 。 避免了在升档期间可察觉的变速器输出扭矩降低。 在升档的扭矩阶段期间使用测量的扭矩值，以校正估计的抵接摩擦元件目标扭矩，从而避免即将到来的离合器处的瞬时扭矩扰动，并且输出轴处的扭矩瞬变减小。
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