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公开(公告)号：US20230313885A1
公开(公告)日：2023-10-05
申请号：US18165330
申请日：2023-02-07
发明人： Takahide WATANABE
IPC分类号： F16H61/686 , F16H61/00
CPC分类号： F16H61/686 , F16H61/0009 , F16H2200/2002
摘要： The disclosure reduces the number of factors to be considered in the switching control of the shift stages, thereby simplifying the switching control. In a control device of an automatic transmission, when a detection part detects that a shift position has been switched from one of a forward range and a reverse range to the other, among multiple hydraulic friction engagement mechanisms, a hydraulic pressure command value is fixed for the hydraulic friction engagement mechanisms that do not change the engaged state between the forward range and the reverse range, and the hydraulic pressure command value is variable based on a hydraulic pressure supplied to the hydraulic friction engagement mechanisms for the hydraulic friction engagement mechanisms that change the engaged state between the forward range and the reverse range.
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公开(公告)号：US11707981B2
公开(公告)日：2023-07-25
申请号：US17337324
申请日：2021-06-02
发明人： Devaraj Gowrisankar
IPC分类号： B60K17/08 , B60K1/00 , F16H57/04 , F16H37/08 , F16H3/64 , B60K17/16 , F16H57/037 , F16H57/02 , F16H61/686
CPC分类号： B60K17/08 , B60K1/00 , B60K17/165 , F16H3/64 , F16H37/0813 , F16H57/037 , F16H57/0423 , B60K2001/001 , F16H61/686 , F16H2057/02034 , F16H2057/02052 , F16H2200/0021 , F16H2200/0039 , F16H2200/2007 , F16H2200/2094 , F16H2702/02
摘要： Methods and systems are provided for a multi-speed transmission. The multi-speed transmission includes a housing, an electric motor with a stator and a rotor positioned within the housing, and a planetary assembly positioned on a first axial side of the electric motor. The transmission further includes a first and second clutch unit spaced away from one another, each including a synchronizer, and designed to selectively rotationally couple to the rotor and to rotationally couple the rotor to different gears in the planetary assembly and where the electric motor and planetary assembly are coaxially arranged.
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3.发明授权公开(公告)号：US11480222B2
公开(公告)日：2022-10-25
申请号：US16794703
申请日：2020-02-19
发明人： Eric M. Engerman
摘要： Methods and systems for a clutch assembly in an electric drive axle of a vehicle are provided. In one example, a clutch assembly in a gear train is provided that includes a locking clutch. The locking clutch includes a gear including a plurality of teeth having at least one tooth with a tapered end, an indexing shaft rotationally connected to an output shaft, a shift collar mounted on the indexing shaft, configured to translate on the indexing shaft into an engaged and disengaged configuration, and including a plurality of teeth on a face, where at least one tooth in the plurality of teeth in the shift collar includes a tapered end, and an indexing mechanism coupled to the shift collar and the indexing shaft and configured to accommodate for indexing between the indexing shaft and the shift collar during shift collar engagement.
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公开(公告)号：US11473674B2
公开(公告)日：2022-10-18
申请号：US16613053
申请日：2018-05-10
申请人： ISUZU MOTORS LIMITED
IPC分类号： F16H59/66 , F16H59/44 , F16H61/686
摘要： A vehicle control device controls a vehicle provided with a transmission having a direct gear and normal gears including an overdrive gear having a lower gear ratio than the direct gear. The device includes a travel segment determination unit which determines a forward travel segment having a different road slope from a current travel segment, a current gear position selection unit that selects a current gear position based on a travel resistance of the vehicle, a forward gear position selection unit that selects a forward gear position based on a travel resistance in the forward travel segment, and a shift control unit that selects whether or not to upshift the transmission based on a situation until the vehicle reaches the forward travel segment, when an upshift to the overdrive gear is newly selected in a case where the current gear position and the forward gear position are the direct gear.
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公开(公告)号：US11326689B2
公开(公告)日：2022-05-10
申请号：US16626364
申请日：2018-06-26
申请人： JATCO Ltd , NISSAN MOTOR CO., LTD.
发明人： Keisuke Ichikawa , Tomoaki Kabe , Kosuke Abe
IPC分类号： F16H61/12 , F16H59/10 , F16H59/02 , F16H61/686
摘要： A shifter abnormality diagnosis device for a shifter used in an automatic transmission having a manual mode, the shifter including a first switch for outputting a signal corresponding to the position of a select lever and a second switch for outputting a signal corresponding to the position of the select lever if the select lever is located in at least one of an upshift range or a downshift range, wherein the abnormality diagnosis device is configured to perform an abnormality diagnosis of the second switch on the basis of an output signal of the second switch and prohibit the abnormality diagnosis of the second switch if it is determined that the select lever is not located in any one of forward ranges including the upshift range and the downshift range on the basis of an output signal of the first switch.
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公开(公告)号：US20210010568A1
公开(公告)日：2021-01-14
申请号：US16914574
申请日：2020-06-29
IPC分类号： F16H3/66 , F16H61/00 , F16H61/02 , F16H61/686
摘要： A drive assembly for a motor vehicle includes a housing having a transmission housing chamber, a reservoir, and a clutch housing chamber. At least one of the transmission housing chamber or the clutch housing chamber are fluidically connected to the reservoir. A transmission is disposed in the transmission housing chamber. A clutch is disposed in the clutch housing chamber. The clutch is drivingly connected to the transmission. An actuator has an actuating element engaged with the clutch. The clutch is moveable by the actuating element between a disengaged position and an engaged position. A valve is operatively connected to the actuating element of the actuator to allow lubricant flow from the reservoir to at least one of the transmission housing chamber and the clutch housing chamber when the clutch is in the engaged position and to prevent lubricant flow from the reservoir when the clutch is in the disengaged position
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公开(公告)号：US10808835B2
公开(公告)日：2020-10-20
申请号：US15909140
申请日：2018-03-01
发明人： Norihiro Tsukamoto , Tomohiro Asami , Hiromasa Takai , Masataka Hirano , Daiki Fukuda , Takuma Sugino
摘要： A shift control device of a vehicle including an internal combustion engine and a multi-speed transmission in series, the shift control device comprises: a control portion providing a downshift control in which an input shaft rotation speed of the multi-speed transmission is increased through a torque-up of the internal combustion engine toward a post-shift input shaft rotation speed in a neutral state where a release-side engagement device to be released during a downshift of the multi-speed transmission is released, so as to engage an engagement-side engagement device to be engaged after the shift. In the case of a shift pattern having a large internal inertia of the multi-speed transmission, the control portion controls a torque capacity of the engagement-side engagement device to a value greater than zero before starting a torque-up control of the internal combustion engine.
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公开(公告)号：US20200278011A1
公开(公告)日：2020-09-03
申请号：US16645686
申请日：2018-11-14
申请人： AISIN AW CO., LTD.
摘要： A vehicle drive system including: a rotating electric machine; an output drivingly coupled to a wheel; a differential gear device provided in a power transmission path between the rotating electric machine and the output, the differential gear device including at least a first rotating element drivingly coupled to the rotating electric machine, a second rotating element drivingly coupled to the output, and a third rotating element that is selectively fixed by a one-way clutch to a non-rotating member and that is selectively fixed by a friction brake to the non-rotating member; and a clutch that selectively couples together two of the first rotating element, the second rotating element, and the third rotating element.
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公开(公告)号：US10605355B2
公开(公告)日：2020-03-31
申请号：US16250108
申请日：2019-01-17
发明人： Harald Stehle , Peter Schiele , Günther Maier
IPC分类号： F16H61/02 , F16H61/686 , F16H3/66 , F16H59/42
摘要： A method (200) for the open-loop control of a gearbox (100) that comprises an input shaft (105) and a first and a second proportionally controllable shift element (A-F) is provided. The method includes disengaging (215) the first shift element (A-F) according to a first control profile and engaging (220) the second shift element (A-F) according to a second control profile. The method also includes cyclically performing the following during the disengagement and the engagement: determining (230) a difference between the rotational speed of the input shaft (105) and a rotational speed which the input shaft (105) assumes when the second shift element (A-F) has been completely engaged; determining (230) a gradient of the difference; and adapting (230) the first control profile on the basis of the gradient.
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公开(公告)号：US10543845B2
公开(公告)日：2020-01-28
申请号：US15980798
申请日：2018-05-16
发明人： Yosuke Michikoshi , Masashi Ikemura
IPC分类号： B60W30/20 , B60W10/02 , B60W10/11 , B60W30/184 , F16H61/14 , F16H61/02 , F16H57/00 , F16H61/686 , F16H59/72 , F16H3/66 , F16H59/68 , F16H57/08 , F16H57/10
摘要： A control device for a vehicle includes an electronic control unit configured to control release of a predetermined engaging device configured to selectively engage a rotating member of a loaded part that participates in power transmission in a predetermined gear stage among a plurality of engaging devices with a rotating member of a non-loaded part that does not participate in the power transmission in the predetermined gear stage, at the time of selection of the predetermined gear stage of a stepped transmission, and control the predetermined engaging device such that an engagement pressure for bringing the predetermined engaging device into a weak slip state in a range that does not affect the selection of the predetermined gear stage is added, at the time of the selection of the predetermined gear stage and in a predetermined operational state.
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