公开(公告)号：US10704677B2

公开(公告)日：2020-07-07

申请号：US16004681

申请日：2018-06-11

Applicant: Ford Global Technologies, LLC

Inventor： Scott Joseph Gittins ,  Lisa Waldock ,  Stephen Michael Cicala ,  Joseph Scott Slayton ,  Derek Kinch ,  Timothy Fedullo ,  Bradley D. Riedle

IPC: F16H61/00 ,  F16H63/34 ,  F16H59/68

Abstract: A transmission includes an accumulator to hold one of more shift elements in an engaged state while an engine is off. The transmission also includes a hydraulic park system that disengages park in response to engagement of two shift elements. In some circumstance, draining the accumulator in an uncontrolled manner in the presence of a failed valve may lead to unintentionally disengaging park. To avoid this, the accumulator is discharged in a controlled manner. Fluid is first transferred from the accumulator to a shift element apply chamber. Then, the fluid is vented from the shift element apply chamber.

公开(公告)号：US20190376597A1

公开(公告)日：2019-12-12

申请号：US16004681

申请日：2018-06-11

Applicant: Ford Global Technologies, LLC

Inventor： Scott Joseph Gittins ,  Lisa Waldock ,  Stephen Michael Cicala ,  Joseph Scott Slayton ,  Derek Kinch ,  Timothy Fedullo ,  Bradley D. Riedle

IPC: F16H61/00 ,  F16H63/34

Abstract: A transmission includes an accumulator to hold one of more shift elements in an engaged state while an engine is off. The transmission also includes a hydraulic park system that disengages park in response to engagement of two shift elements. In some circumstance, draining the accumulator in an uncontrolled manner in the presence of a failed valve may lead to unintentionally disengaging park. To avoid this, the accumulator is discharged in a controlled manner. Fluid is first transferred from the accumulator to a shift element apply chamber. Then, the fluid is vented from the shift element apply chamber.

公开(公告)号：US10358134B2

公开(公告)日：2019-07-23

申请号：US15794591

申请日：2017-10-26

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Alexander Phillip McDonnell ,  Bradley Dean Riedle ,  Charles William Suter ,  Conor Edward Sullivan ,  Stephen Michael Cicala

IPC: B60W10/02 ,  B60W30/188 ,  F16D48/06 ,  B60W10/06 ,  F16H61/14 ,  F16H61/00

Abstract: A vehicle includes a transmission having a torque converter, an oncoming clutch, and a controller. The controller is programmed to, in response to a torque of the oncoming clutch exceeding an estimated average by a threshold during an engagement, increase the torque of the oncoming clutch via a feedforward command and adjust the torque of the oncoming clutch via a feedback command to compensate for deviations in the torque generated by the feedforward command during the engagement.

公开(公告)号：US10295053B2

公开(公告)日：2019-05-21

申请号：US15783266

申请日：2017-10-13

Applicant: Ford Global Technologies, LLC

Inventor： Stephen Michael Cicala ,  John Randall Armstead ,  Dongdong Dee Li ,  Alexander Phillip McDonnell ,  Bradley D. Riedle ,  Conor Edward Sullivan

IPC: F16H61/12 ,  F16H3/66 ,  F16H61/02 ,  F16H59/14 ,  F16H59/56 ,  F16H59/68 ,  F16H59/72 ,  F16H59/78

Abstract: A vehicle includes a transmission having a first neutral with a first combination of engaged clutches and a second neutral with a second combination of engaged clutches. The second neutral has more engaged clutches than the first neutral. A vehicle controller is programmed to, in response to a request to shift from the first to the second neutral and a failed-on clutch being detected, inhibit the shift to remain in the first neutral.

公开(公告)号：US09360107B2

公开(公告)日：2016-06-07

申请号：US14458434

申请日：2014-08-13

Applicant: Ford Global Technologies, LLC

Inventor： Gregory Michael Pietron ,  Yuji Fujii ,  Joseph F. Kucharski ,  Nicholas Joseph Witte ,  Stephen Michael Cicala ,  Bradley Dean Riedle ,  Diana Yanakiev ,  Nimrod Kapas ,  Davorin David Hrovat

IPC: F16H61/06 ,  F16H59/16 ,  F16H59/14 ,  F16H61/00

CPC classification number: F16H61/061 ,  F16H3/006 ,  F16H3/66 ,  F16H59/16 ,  F16H2003/007 ,  F16H2059/148 ,  F16H2061/0087 ,  F16H2200/0052 ,  F16H2200/201 ,  F16H2200/2043 ,  F16H2306/40 ,  F16H2342/044

Abstract: 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.

Abstract translation: 公开了一种传动和控制方法，其确保适当的冲程压力并且在换挡事件期间最小化扭矩瞬变。 变速器包括具有基于流体压力的扭矩能力的离合器，适于测量与扭矩能力相关变化的扭矩值的扭矩传感器和控制器。 该方法包括改变围绕预定值的流体压力，测量与扭矩传感器产生的扭矩差，以及如果所得到的扭矩差小于阈值，则调节离合器控制参数。