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公开(公告)号：US11584358B2
公开(公告)日：2023-02-21
申请号：US16846812
申请日：2020-04-13
发明人： Muddassar Piracha
IPC分类号： B60W30/19 , B60W20/30 , B60K6/26 , B60K6/28 , B60K6/36 , B60K6/38 , B60W10/08 , B60W10/11 , F16H59/18 , F16H59/38 , F16H59/70 , F16H61/04 , F16H61/688 , F16H59/14 , F16H59/68
摘要： A method for performing rotational speed synchronisation of a first transmission component having a first initial rotational speed with a second transmission component having a second initial rotational speed, so that they rotate with the same final rotational speed during a gear switch from an initial driving gear to a final driving gear in a stepped gear transmission for a hybrid electric or electric drive train having an electric traction motor. The method including calculating a total frictional work resulting from performing the total rotational speed synchronisation by means of a mechanical synchroniser of the stepped gear transmission only, and if the calculated total frictional work exceeds a maximal frictional work of the mechanical synchroniser, performing the rotational speed synchronisation by means of both the electric traction motor and the mechanical synchroniser.
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公开(公告)号：US11535229B2
公开(公告)日：2022-12-27
申请号：US17312553
申请日：2019-11-19
申请人： JATCO Ltd , NISSAN MOTOR CO., LTD.
IPC分类号： F16H59/18 , B60W10/101 , B60W30/19 , F16H61/16 , F16H61/66
摘要： A controller includes a control unit configured to perform stepwise shift that upshifts a CVT in a stepped manner to accelerate a vehicle. The control unit performs a downshift control configured to downshift the continuously variable transmission in a case in which an accelerator pedal is continuously stepped on from before prohibition of the stepwise shift to after prohibition of the stepwise shift.
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公开(公告)号：US11433912B2
公开(公告)日：2022-09-06
申请号：US17023549
申请日：2020-09-17
发明人： Takeshi Kitahata , Atsushi Tabata , Kenji Miyasaka , Koichi Okuda
摘要： A vehicle failure-factor specifying apparatus includes (a) a peculiarity-presence determining portion configured to determine, based on a pre-failure driving state in a stage prior to occurrence of a certain failure in a vehicle, whether a peculiarity was present or absent in the pre-failure driving state, and (b) a failure-causing-driving state specifying portion configured, when the peculiarity was present in the pre-failure driving state, to determine whether the peculiarity present in the pre-failure driving state of the vehicle is substantially identical with a peculiarity in the pre-failure driving state of other vehicles. The peculiarity-presence determining portion determines whether the peculiarity was present or absent in the pre-failure driving state of the vehicle, depending on whether a frequency distribution of the pre-failure driving state of the vehicle is deviated from a frequency distribution of a non-failure driving state of a plurality of vehicles including the other vehicles in a non-failure case.
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公开(公告)号：US20220178439A1
公开(公告)日：2022-06-09
申请号：US17354763
申请日：2021-06-22
发明人： Dong Hoon Jeong , Byeong Wook Jeon , Yong Uk Shin , Min Jae Chai
摘要： An apparatus for controlling shifting of a vehicle and a method therefor are provided, where the apparatus includes a storage storing a power map in which a demand power corresponding to a vehicle speed and an accelerator position sensor (APS) value is recorded and storing an energy consumption map of a power source for each gear stage. The apparatus includes a controller that detects a current demand power based on the power map, generates a power graph representing the detected demand power as the number of revolution and a torque of the power source for each gear stage, and matches the generated power graph with the energy consumption map of the power source to control a shift to a gear stage which consumes minimum energy.
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公开(公告)号：US20220178438A1
公开(公告)日：2022-06-09
申请号：US17395720
申请日：2021-08-06
发明人： Sejin KIM
IPC分类号： F16H59/44 , F16H59/18 , F16H59/70 , F16H61/662
摘要： A method of filtering a target transmission ratio of a continuously variable transmission of a vehicle includes: controlling, by a controller, a vehicle speed filter configured to filter a speed signal of a vehicle distorted due to vibration of the vehicle; controlling, by the controller, a target driving pulley speed memory configured to output a target driving pulley speed signal of the continuously variable transmission based on an output value of an acceleration pedal sensor and the filtered speed signal of the vehicle; and controlling, by the controller, a transmission calculator configured to calculate a target transmission ratio of the continuously variable transmission that is a stable value based on the target driving pulley speed signal of the continuously variable transmission and the filtered speed signal of the vehicle, wherein the vehicle speed filter increases filtering capability and a response speed of the vehicle speed filter and decreases the speed signal of the vehicle to a value that makes the target transmission ratio of the continuously variable transmission stable.
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公开(公告)号：US11236824B2
公开(公告)日：2022-02-01
申请号：US16980502
申请日：2019-02-28
申请人： JATCO Ltd
发明人： Ken Okahara , Atsushi Shimada
摘要： A continuously variable transmission has a variator (4) structured to be able to continuously vary a transmission ratio and a control unit (100). The control unit (100) continuously varies a transmission ratio of the variator (4) in a continuously variable shift mode. In a manual mode in which a manual mode switch (36c) is ON, the transmission ratio is maintained. When a shift switch (36a, 36b) is operated by a driver during the manual mode, the control unit (100) performs shift of the variator (4) so as to change an input rotation speed of the variator (4) by a predetermined rotation speed (ΔN1) regardless of a vehicle speed.
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公开(公告)号：US11204096B2
公开(公告)日：2021-12-21
申请号：US16971362
申请日：2019-02-28
申请人： JATCO LTD , Nissan Motor Co., Ltd.
发明人： Kazuki Hirasako
摘要： A control device for an automatic transmission arranged between an engine and a drive wheel, the automatic transmission including a torque converter having a lock-up clutch, and a transmission mechanism. The control device includes a shift control unit configured to perform shift control of the transmission mechanism. The shift control unit includes a forced downshift control processing unit configured to implement forced downshift when an accelerator foot release operation is performed during auto-upshift in a power-on state with the lock-up clutch engaged. The forced downshift control processing unit is configured to start the forced downshift before an engine rotation speed that has decreased due to the auto-upshift reaches a lock-up release rotation speed.
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公开(公告)号：US11187318B2
公开(公告)日：2021-11-30
申请号：US17060335
申请日：2020-10-01
申请人： SUBARU CORPORATION
发明人： Satoshi Inoue , Kazuhiro Yoshida , Takuya Machida
IPC分类号： F16H59/18 , F16H61/66 , B60W10/101 , B60W20/20 , B60K6/22 , F16H61/662 , F16H59/44
摘要： A vehicle includes an engine; a continuously variable transmission; an output clutch disposed between the continuously variable transmission and the drive wheel; a drive motor coupled between the output clutch and the drive wheel; a traveling mode controller; and a speed ratio controller. In a case where required driving power based on an accelerator position is less than a first threshold, the traveling mode controller switches a traveling mode to a first traveling mode. In a case where the required driving power is equal to or greater than the first threshold, the traveling mode controller switches the traveling mode to a second traveling mode. In a case where the required driving power is less than the first threshold and equal to or greater than a second threshold, the speed ratio controller causes a speed ratio of the continuously variable transmission to change depending on a vehicle speed.
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公开(公告)号：US11008021B2
公开(公告)日：2021-05-18
申请号：US16461932
申请日：2016-11-23
发明人： Yuzhou Li , Grant Inskeep
IPC分类号： B60W50/16 , B60W50/10 , F16H61/02 , F16H63/42 , B60W50/14 , F16H59/02 , F16H59/18 , F16H59/00 , F16H61/24 , F16H59/66 , F16H59/54 , F16H59/58
摘要： A manual mode training system for a vehicle having a manual transmission or a “manual mode” transmission controlled by a paddle shifter. The system includes a sensor to obtain force and position information from a foot pedal of the vehicle, and a processor to receive the information. Based on the information, the processor may predict an intended vehicle response, determine an appropriate gear to achieve the intended vehicle response, and notify a driver, through a haptic feedback mechanism, how to shift the transmission of the vehicle to reach the appropriate gear. A corresponding method is also disclosed and claimed herein.
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公开(公告)号：US20210131070A1
公开(公告)日：2021-05-06
申请号：US16476646
申请日：2018-05-29
申请人： KOMATSU LTD.
发明人： Takahisa OASA
IPC分类号： E02F9/22 , E02F9/20 , F16H59/18 , F16H61/475 , F16H63/50 , F16H59/04 , F02B63/06 , F02D41/02
摘要： A work vehicle includes an engine, a hydrostatic transmission, a work implement pump driven by the engine, a work implement driven by hydraulic fluid discharged from the work implement pump, an accelerator, a first sensor configured to output a signal indicative of an operation amount of the accelerator, a work implement operating member, a second sensor configured to output a signal indicative of an operation amount of the work implement operating member, and a controller. The controller is configured to receive signals from the first sensor and the second sensor, determine a target input horsepower input to the hydrostatic transmission from the operation amount of the accelerator, and determine a target rotational speed of the engine from the target input horsepower and the operation amount of the work implement operating member.
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