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公开(公告)号：US11971098B2
公开(公告)日：2024-04-30
申请号：US17783360
申请日：2021-01-18
Applicant: KOMATSU LTD.
Inventor： Hironori Torisu , Takuro Yoneda , Tetsuya Yamauchi
CPC classification number: F16H61/143 , B60K17/10 , F16H45/02 , F16H61/0031 , F16H61/0206 , F16H2045/0215 , F16H59/44 , F16H61/0021
Abstract: A power transmission device includes a torque converter device, a first hydraulic pump, a first oil channel, a second oil channel, a third oil channel, a second pressure control valve, and a controller. The torque converter device has a torque converter and a lock-up clutch. The first oil channel supplies hydraulic fluid from the first hydraulic pump to the torque converter. The second oil channel drains hydraulic fluid from the torque converter. The third oil channel communicates with the first oil channel and the second oil channel. The second pressure control valve is disposed in the third oil channel. The controller sets the second pressure control valve to an open state when the lock-up clutch is in an engaged state.
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公开(公告)号：US20240019026A1
公开(公告)日：2024-01-18
申请号：US18313676
申请日：2023-05-08
Applicant: ZF Friedrichshafen AG
Inventor： Gürhan Gönülalan , Harald Stier , Stefan Benz-Breitweg , Gabriele Glade , Manuel Breymayer
CPC classification number: F16H57/0452 , F16H57/0424 , F16H45/02 , F16H2045/0215
Abstract: A motor vehicle transmission (1) includes a transmission housing (2) with torque converter (4) accommodated in the transmission housing (2) and a first oil guide device (9) positioned at an axial side of the torque converter (4). A housing wall (11) of the transmission housing (2) encloses the torque converter (4) radially outwardly at least in sections and has an inner surface (17) with an inner diameter configured such that a gap (13) defined by the inner surface (17) of the housing wall (11) and an outer surface (39) of the torque converter (4) is configured to convey oil from a first area (15) of the motor vehicle transmission (1) into a second area (16) of the motor vehicle transmission (1) during a rotary movement of the torque converter (4). The second area (16) is arranged above the first area (15) in an installed position of the motor vehicle transmission (1).
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公开(公告)号：US11746869B2
公开(公告)日：2023-09-05
申请号：US17557506
申请日：2021-12-21
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Dongxu Li , Leonid Basin
IPC: F16H45/02
CPC classification number: F16H45/02 , F16H2045/0215 , F16H2045/0268
Abstract: Presented are torque converters (TC) with planetary-type vibration dampers, methods for making/using such TC assemblies, and vehicles equipped with such TC assemblies. A TC assembly includes a TC housing drivingly connected to a prime mover to receive torque therefrom, and a TC output member drivingly connected to a transmission to transfer torque thereto. Rotatably mounted within an internal fluid chamber of the TC housing are juxtaposed turbine and impeller blades. The impeller blades are rotatably mounted to the housing. A TC clutch is operable to lock the TC housing to the TC output member. A torsional vibration damper, which is disposed within the internal fluid chamber, includes a sun gear attached to the TC output member for unitary rotation, a ring gear attached to the TC clutch for unitary rotation, and a planet carrier intermeshed with the ring and sun gears and attached to the turbine blades for unitary rotation.
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4.发明公开公开(公告)号：US20230166710A1
公开(公告)日：2023-06-01
申请号：US17562169
申请日：2021-12-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Norman K. Bucknor , Chunhao J. Lee , Dongxu Li , Lei Hao , Chengwu Duan
CPC classification number: B60W50/06 , B60W10/08 , B60W10/024 , F16H45/02 , B60W2520/04 , B60W2520/105 , B60W2540/10 , B60W2710/024 , B60W2710/081 , B60W2710/083 , F16H2045/0215
Abstract: A method for controlling an electric drive unit (EDU) having a motor-driven torque converter includes receiving a request signal indicative of a requested output torque of the EDU, and operating the motor at a target motor speed using the requested output torque. The target motor speed minimizes system losses while achieving the requested output torque. When the requested output torque remains below a calibrated threshold and a turbine speed is less than a corner speed of the motor, a torque converter clutch (TCC) transitions to or remains in a locked state. The controller commands the TCC to transition to an unlocked state to reach the target motor speed, thereby selectively enabling torque multiplication. A powertrain system includes a driven load and the EDU. A computer readable storage medium may include executable instructions for performing the method.
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公开(公告)号：US11644090B2
公开(公告)日：2023-05-09
申请号：US17551288
申请日：2021-12-15
Applicant: ZF Friedrichshafen AG
Inventor： Ewgeni Bayer , Peter Brielmaier
CPC classification number: F16H41/30 , F16H45/02 , F16H2045/0215 , F16H2045/0221
Abstract: A hydrodynamic torque converter (1) with a converter torus formed by a pump wheel (3) and a turbine wheel (4) and a guide wheel (5). The guide wheel (5) is supported rotatably by a first axial bearing (51) and a second axial bearing (52). A sealing device (11), with a sealing gap, is provided in the area of the first axial bearing (51), which impedes a through-flow of the working fluid of the torque converter (1) through the first axial bearing (51).
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Patent Agency Ranking
公开(公告)号：US20180291990A1
公开(公告)日：2018-10-11
申请号：US15479365
申请日：2017-04-05
Applicant: Schaeffler Technologies AG & Co. KG
Inventor： Timothy Hess
IPC: F16H45/02 , F16D25/0632
CPC classification number: F16H45/02 , F16D25/0632 , F16H2045/021 , F16H2045/0215 , F16H2045/0263 , F16H2045/0294
Abstract: A torque converter, including: a cover arranged to receive torque; an impeller including an impeller shell non-rotatably connected to the cover and at least one impeller blade connected to the impeller shell; a turbine including a turbine shell and at least one turbine blade connected to the turbine shell; an output hub connected to the turbine shell and arranged to non-rotatably connect to an input shaft for a transmission; and a turbine clutch including a piston non-rotatably connected to the turbine shell, and for a lock-up mode, axially displaceable to non-rotatably connect the piston and the impeller shell.
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公开(公告)号：US10060516B2
公开(公告)日：2018-08-28
申请号：US15209091
申请日：2016-07-13
Applicant: Schaeffler Technologies AG & Co. KG
Inventor： Michael Kuehnle , Thorsten Krause , Kai Schenck
IPC: F16D13/76 , F16D25/0635 , F16H45/02
CPC classification number: F16H45/02 , F16D13/76 , F16D25/0635 , F16D2300/0214 , F16H2045/0205 , F16H2045/0215 , F16H2045/0221 , F16H2045/0284 , F16H2045/0289 , F16H2045/0294
Abstract: An oil-flooded single-plate or multi-plate lockup clutch is provided in a torque transfer device. The torque transfer device may, for example, be a converter, a dual clutch, a starting clutch, a manual shifter, or power shifting clutch, having a piston to engage the clutch and a damper. In accordance with the present disclosure, the piston together with a housing of the torque transfer device forms a closed pressure chamber when the clutch is engaged and at least one oil flow opening is provided in the piston in an area outside of the pressure chamber. The torque transfer device preferably has a damper and the piston of the clutch forms a part of the damper and may be designed as a retainer for springs of the damper.
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公开(公告)号：US09995381B2
公开(公告)日：2018-06-12
申请号：US15224185
申请日：2016-07-29
Applicant: Schaeffler Technologies AG & Co. KG
Inventor： Sagar Adari
CPC classification number: F16H45/02 , F16H2045/021 , F16H2045/0215 , F16H2045/0231 , F16H2045/0263
Abstract: A torque converter is provided. The torque converter includes a front cover, an impeller shell and a turbine axially movable to frictionally engage the impeller shell such that the turbine forms a piston of a lockup clutch. A first pressure chamber is defined axially between the turbine and the impeller shell. The torque converter further includes a reaction plate positioned axially between the front cover and the turbine. A second pressure chamber is defined axially between the reaction plate and the turbine and a third pressure chamber is defined axially between the reaction plate and the front cover. A method of forming a torque converter is also provided.
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公开(公告)号：US20180119812A1
公开(公告)日：2018-05-03
申请号：US15858123
申请日：2017-12-29
Applicant: Dana Limited
Inventor： Joseph J. Horak , Michael E. Stone
CPC classification number: F16H61/6645 , F16H15/28 , F16H15/506 , F16H25/229 , F16H37/084 , F16H57/0427 , F16H57/0487 , F16H59/40 , F16H63/067 , F16H63/42 , F16H2037/0866 , F16H2045/0215 , F16H2059/704
Abstract: Provided herein is a variator including: a first traction ring assembly and a second traction ring assembly in contact with a plurality of balls, wherein each ball of the plurality of balls has a tiltable axis of rotation; and a traction patch oil control member coupled to the first and/or second traction ring assembly.
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公开(公告)号：US20170159807A1
公开(公告)日：2017-06-08
申请号：US14962775
申请日：2015-12-08
Applicant: Caterpillar Inc.
Inventor： James Boston , Eric J. Manning , Benjamin D. Nauman
CPC classification number: F16H61/14 , F16D25/14 , F16H45/02 , F16H61/0267 , F16H61/142 , F16H2045/0215
Abstract: A hydraulic circuit supplies pressurized hydraulic fluid to and from a torque converter that is operatively associated with a lockup clutch. The torque converter is disposed upstream of an outlet regulator that maintains a predetermined pressure in the torque converter. Power transmission in a powertrain can be directed through the torque converter during a hydrodynamic mode and can be directed through the lockup clutch during lockup mode. To switch between the hydrodynamic mode and the lockup mode, the hydraulic circuit includes a diverter valve to selectively direct pressurized hydraulic fluid between the torque converter and the lockup clutch. When operating in the lockup mode, the diverter valve further diverts hydraulic fluid discharged for the torque converter to bypass the outlet regulator disposed downstream of the torque converter.
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