公开(公告)号：US20230074183A1

公开(公告)日：2023-03-09

申请号：US17798159

申请日：2021-04-06

申请人： AUDI AG

发明人： Enrico SZEPPAT ,  Lutz GUNDLACH

IPC分类号： B60W20/30 ,  F16H61/00 ,  B60W10/08 ,  B60W10/113 ,  B60W30/18 ,  B60K6/48 ,  F16H61/688 ,  F16H61/20 ,  B60W10/02 ,  B60W10/06

摘要： A method for operating a dual clutch transmission of a motor vehicle having a first partial transmission, a second partial transmission, and a transmission output shaft common to the partial transmissions and drivable both by the first partial transmission and by the second partial transmission, in which the dual clutch transmission is in a parking lock state in which two gears of one of the partial transmissions are engaged simultaneously. The following steps are carried out to exit the parking lock state: Introducing a torque caused by a drive element of the motor vehicle via the transmission output shaft common to the one partial transmissions into the one and/or other partial transmission while the gears of the partial transmission are engaged; and disengaging at least one of the gears of the one partial transmission engaged simultaneously in step a).

公开(公告)号：US11597472B2

公开(公告)日：2023-03-07

申请号：US17402143

申请日：2021-08-13

申请人： KAWASAKI MOTORS, LTD.

发明人： Kengo Ueda ,  Hiroyuki Watanabe ,  Kazuki Arima

IPC分类号： F16H59/46 ,  B62M11/06 ,  F16H61/688 ,  B62M25/08 ,  F16H63/18 ,  F16H3/00 ,  F16H61/662

摘要： A control device of a gear transmission-equipped vehicle includes a power controller that starts power reduction control when it is determined that a start condition is satisfied, the power reduction control being control of reducing power transmitted from a driving source to a gear transmission. The start condition includes: a condition that a detection value of a gear position sensor that detects a current gear position of the gear transmission falls within a transition region between engagement regions corresponding to respective gear positions; and a condition that a speed difference obtained by subtracting a rotational speed of an output shaft of the gear transmission from a rotational speed of an input shaft of the gear transmission is a threshold or more.

公开(公告)号：US11543027B1

公开(公告)日：2023-01-03

申请号：US17692003

申请日：2022-03-10

申请人： Hyundai Motor Company ,  Kia Corporation

发明人： Ki Hyung Joo ,  Young Ho Ko

IPC分类号： F16H61/688 ,  F16H61/00 ,  F16H61/28

摘要： A line pressure control method for a double clutch transmission (DCT) includes estimating a line pressure, which decreases with stoppage of an electric oil pump, based on a linear regression model using state variables of the DCT that are related to a line pressure change, and driving the electric oil pump when the line pressure estimated based on the linear regression model reaches a predetermined lower limit.

公开(公告)号：US11473650B2

公开(公告)日：2022-10-18

申请号：US17116263

申请日：2020-12-09

申请人： BorgWarner Inc.

发明人： R. Keith Martin ,  Xinqian Xiang

IPC分类号： F16H3/00 ,  F16H61/688

摘要： A method of operating a shifting system for a vehicle transmission includes engaging a clutch to operatively couple one of first and second gear ratios to an input member, and moving a disconnect from a first disconnect position where a disconnectable component is disengaged from the disconnect, to a second disconnect position where the disconnectable component is engaged with the disconnect to operatively couple the other of the first and second gear ratios to the input member through a shifting assembly. Engaging the clutch and moving the disconnect are performed such that the clutch is operatively coupled to one of the first and second gear ratios at the same time that the shifting assembly is operatively coupled to the other one of the first and second gear ratios, thus preventing torque from being transmitted through either the first and second gear ratios of the vehicle transmission to park the vehicle.

公开(公告)号：US11460107B2

公开(公告)日：2022-10-04

申请号：US16631044

申请日：2018-07-04

申请人： Magna PT B.V. & Co. KG

发明人： Stefan Kapp

IPC分类号： F16H63/16 ,  F16H61/688 ,  F16H63/02

摘要： A selector drum for an automated manual transmission, in particular a dual clutch transmission, having a selector drum body, which can be mounted in the manual transmission for rotation about an axis of rotation, wherein at least one shifting contour is formed on the selector drum body, said shifting contour extending over a peripheral portion of the selector drum body, wherein the selector drum is designed for shifting at least one high gear stage, one middle gear stage and one low gear stage, wherein the at least one shifting contour has a shifting contour switch in a region of a switch gear portion.

公开(公告)号：US20220252154A1

公开(公告)日：2022-08-11

申请号：US17661189

申请日：2022-04-28

申请人： Cummins Inc.

发明人： Steven M. Bellinger

IPC分类号： F16H61/688 ,  F16H61/04

摘要： A system, method and apparatus are disclosed for a clutch assembly for an automated manual transmission. The clutch assembly includes a dual power path. One power path connects a prime mover to the automated manual transmission via a wet clutch, and a second power path connects one of the prime mover and the automated manual transmission to a grounded connection for synchronizing the speed thereof for a gear change.

公开(公告)号：US11287033B2

公开(公告)日：2022-03-29

申请号：US16322674

申请日：2017-07-31

申请人： AUDI AG

发明人： Mathias Weinhardt

IPC分类号： F16H61/12 ,  F15B1/04 ,  F15B15/20 ,  F15B19/00 ,  F16H61/688 ,  F16H59/68

摘要： A hydraulic system for an automatic transmission of a motor vehicle. A high-pressure circuit, in which a pressure accumulator, at least one clutch, and gear selectors and a hydraulic pump, which can be operated by an electronic control unit and by which the accumulator pressure in the high-pressure circuit can be increased in charging operation. A clutch valve that can be operated by the control unit is arranged in a clutch path between the pressure accumulator and a clutch hydraulic cylinder of the clutch, using which clutch valve a hydraulic pressure applied to the clutch hydraulic cylinder can be adjusted, and a safety valve that can be operated by the control unit is arranged upstream of the clutch valve.

公开(公告)号：US20220080821A1

公开(公告)日：2022-03-17

申请号：US17416607

申请日：2019-12-11

申请人： Bayerische Motoren Werke Aktiengesellschaft

发明人： Michael ETZEL ,  Michael FRIEDRICH ,  Sebastian LIEBERT

IPC分类号： B60K6/48 ,  B60K6/547 ,  B60W10/06 ,  B60W10/08 ,  B60W10/113 ,  B60W30/19 ,  F16H61/688 ,  B60W20/40

摘要： A hybrid drive includes a control unit, an internal combustion engine, an electrical machine and a dual clutch transmission having an output shaft. The dual clutch transmission includes a first sub-transmission and a second sub-transmission, each couplable to the output shaft. A drive shaft of the internal combustion engine is couplable to a first input shaft of the first sub-transmission via a first clutch and to a second input shaft of the second sub-transmission via a second clutch. The control unit is configured to permit the second clutch to be closed even when the hybrid drive is being operated purely electrically so that the driveshaft of the internal combustion engine is driven by the electrical machine. A control unit and a method for operation of a hybrid drive are also provided.

公开(公告)号：US11236809B2

公开(公告)日：2022-02-01

申请号：US16844944

申请日：2020-04-09

申请人： Dana Belgium N.V.

发明人： Jan A. Bedert ,  Koen B. Seynaeve ,  Dries C. T'Hooft

IPC分类号： F16H61/688 ,  F16H37/04 ,  F16H61/04 ,  B60W10/111 ,  B60W30/19 ,  B60W10/08

摘要： A method of shifting gears including providing a driveline for a vehicle. The driveline has an electric drive motor and a powershift transmission. The transmission has a first transmission stage and a second transmission stage. The method includes performing a range shift including handing over torque transmission from a range clutch of the first or second transmission to the other range clutch. The method also includes, simultaneously with the range shift, engaging one of the direction clutches of one transmission or keeping one of the direction clutches engaged.

公开(公告)号：US11214260B2

公开(公告)日：2022-01-04

申请号：US17026691

申请日：2020-09-21

申请人： FERRARI S.p.A.

发明人： Alessandro Barone ,  Andrea Nannini ,  Giacomo Senserini ,  Stefano Marconi

IPC分类号： B60W30/19 ,  B60W10/02 ,  B60W10/06 ,  B60W10/113 ,  F16H61/688 ,  F16H61/28

摘要： A method to control the execution of a shift to a lower gear with a released accelerator pedal in a drivetrain provided with a dual-clutch, servo-assisted transmission; the following steps are provided: opening, in a first instant, an outgoing clutch; closing, in the first instant, an incoming clutch; completing the opening of the outgoing clutch with a first linear ramp in a second instant; synchronizing, between the second instant and a third instant, a rotation speed of the internal combustion engine with a rotation speed of the incoming clutch; closing of the incoming clutch with a second linear ramp starting from a fourth instant, which is prior to or coincides with the second instant; completing the closing of the incoming clutch in a fifth instant, which coincides with or is subsequent to the second instant; and activating the internal combustion engine so as to generate a torque between the fourth instant and the third instant.