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公开(公告)号：US11694492B2
公开(公告)日：2023-07-04
申请号：US17066575
申请日：2020-10-09
发明人： Kenji Miyasaka , Atsushi Tabata , Takeshi Kitahata , Koichi Okuda
CPC分类号： G07C5/0816 , G06N20/00 , G07C5/0808
摘要： A cause for a malfunction in a vehicle is identified using a preset malfunction cause identifying model indicating a relation between the cause for the malfunction identified based on a detection value of an experimental vehicle sensor such as an oil pressure sensor, which is a detection value allowing the cause for the malfunction to be identified more easily than a detection value of an in-vehicle sensor group that is the same as an in-vehicle sensor group equipped in the vehicle, and the detection value of the in-vehicle sensor group, and the detection value of the in-vehicle sensor group when the malfunction has occurred in the vehicle. Therefore, in the case where the vehicle is not equipped with the experimental vehicle sensor, it is possible to improve the accuracy of the identification of the cause for the malfunction in the vehicle.
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公开(公告)号：US11631282B2
公开(公告)日：2023-04-18
申请号：US17036593
申请日：2020-09-29
摘要： An apparatus for estimating a remaining life of a vehicle component included in a vehicle, based on various kinds of remaining-life-related data that influence the remaining life. The apparatus includes: a data transmitting portion provided in the vehicle, and configured to correlate the remaining-life-related data with running of the vehicle and to transmit the remaining-life-related data correlated with the running of the vehicle, to a data management center provided outside the vehicle, via a wireless communication; a data-unobtained running-section specifying portion configured to specify a data-unobtained running section in which the remaining-life-related data has been unobtainable by the data management center; and a remaining-life calculating portion configured to estimate the remaining life, by taking account of a reduction of the remaining life of the vehicle component in the data-unobtained running section.
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公开(公告)号：US11566966B2
公开(公告)日：2023-01-31
申请号：US17157399
申请日：2021-01-25
发明人： Atsushi Tabata , Koichi Okuda , Kota Fujii , Ken Imamura
摘要： There is provided a method of specifying a location of occurrence of an abnormal sound, the method including: storing mapping data in a storage device, the mapping data prescribing mapping that receives, as inputs, a sound variable that matches a sound detected in a vehicle and a state variable of a drive-system device of the vehicle synchronized with the sound, and that outputs a location as a main cause of the sound; executing a sound signal acquisition process of acquiring a sound signal output from a microphone that detects a sound; a state variable acquisition process of acquiring the state variable of the drive-system device; and a specifying process of specifying the location of occurrence of the sound corresponding to the sound signal using the sound variable and the state variable as inputs to the mapping. There are also provided a non-transitory storage medium and an in-vehicle device.
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公开(公告)号：US11548371B2
公开(公告)日：2023-01-10
申请号：US17548294
申请日：2021-12-10
发明人： Atsushi Tabata , Koichi Okuda , Koji Takaira , Akinori Homan , Yosuke Akiyama , Akira Ijichi , Kunihiko Usui
IPC分类号： B60K6/52 , B60K6/365 , B60K6/387 , B60K17/346
摘要： A drive system including first and second power sources, first and second output shafts, a differential mechanism, and an electronic control unit, and a control method therefor are provided. The differential mechanism is configured such that the second power source is connected to a first rotating element, one output shaft of a vehicle is connected to a second rotating element, and the other output shaft of the vehicle is connected to a third rotating element so as to be able to be connected to or disconnected from the third rotating element by a connect-disconnect mechanism, and includes at least one of an engagement element that selectively engages any two of the three rotating elements and an engagement element that selectively engages the third rotating element to a fixing member. The electronic control unit is configured to, during turning, prohibit switching between a first drive mode and a second drive mode.
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35.发明授权公开(公告)号：US11519495B2
公开(公告)日：2022-12-06
申请号：US17340153
申请日：2021-06-07
发明人： Kota Fujii , Atsushi Tabata , Koichi Okuda , Ken Imamura , Hideaki Bunazawa , Keita Sasaki
IPC分类号： F16H59/72
摘要： A heat load estimation device for a friction engaging element that estimates a heat load when at least one of a temperature, a heat generation amount, and presence or absence of seizure in the friction engaging element at a time of shifting of the transmission is regarded as the heat load, includes a storage device and an execution device. The storage device stores mapping data defining mapping. The mapping includes, as an input variable, a speed variable that is a variable indicating a relative rotation speed of members of the friction engaging element and a hydraulic pressure variable that is a variable indicating hydraulic pressure during the shifting of the transmission, and includes, as an output variable, the heat load. The execution device executes a calculation process for calculating a value of the output variable and a change process for changing an execution mode of the calculation process.
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公开(公告)号：US11479234B2
公开(公告)日：2022-10-25
申请号：US16898413
申请日：2020-06-10
摘要： An MG1 torque at a time of decreasing an engine speed of an engine is made larger when a turbocharging pressure by a turbocharger is higher than when the turbocharging pressure is lower. In this way, even if the losses of pumps of the engine differ due to the remaining turbocharging pressure during a transition of stopping the engine in turbocharging, it is possible to appropriately reduce the engine speed. Therefore, when the engine is being brought to a stop, it is possible to appropriately suppress vibration generated in the vehicle.
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公开(公告)号：US11472399B2
公开(公告)日：2022-10-18
申请号：US16924399
申请日：2020-07-09
发明人： Keisuke Omuro , Atsushi Tabata , Tetsuya Kono , Koichi Okuda
摘要： A controller for a hybrid vehicle predicts whether necessary discharging electric power from a power storage device which is required to perform downshift in a transmission exceeds upper-limit discharging electric power of the power storage device when downshift in the transmission is performed in a hybrid vehicle travel mode and controls a compressor rotation speed such that a rate of increase of the compressor rotation speed of a supercharger at the time of performing downshift in the transmission increases as the upper-limit discharging electric power decreases when it is predicted that the necessary discharging electric power exceeds the upper-limit discharging electric power.
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公开(公告)号：US11440531B2
公开(公告)日：2022-09-13
申请号：US16898413
申请日：2020-06-10
摘要： An MG1 torque at a time of decreasing an engine speed of an engine is made larger when a turbocharging pressure by a turbocharger is higher than when the turbocharging pressure is lower. In this way, even if the losses of pumps of the engine differ due to the remaining turbocharging pressure during a transition of stopping the engine in turbocharging, it is possible to appropriately reduce the engine speed. Therefore, when the engine is being brought to a stop, it is possible to appropriately suppress vibration generated in the vehicle.
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公开(公告)号：US11377091B2
公开(公告)日：2022-07-05
申请号：US16927884
申请日：2020-07-13
发明人： Tooru Matsubara , Atsushi Tabata , Koichi Okuda , Yasutaka Tsuchida , Keisuke Omuro , Tetsuya Kono
摘要： In a vehicle condition in which an engine rotation speed is likely to exceed a maximum rotation speed, since supercharging by a supercharger is curbed, it is possible to curb an increase in an engine torque. Even when the engine rotation speed exceeds the maximum rotation speed, the engine rotation speed is made less likely to increase by control of decreasing the engine torque. In a vehicle condition in which the engine rotation speed is less likely to exceed the maximum rotation speed, since a supercharging pressure becomes relatively high, it becomes easier to secure power performance. Accordingly, it is possible to curb a decrease in power performance due to curbing of supercharging and to prevent an engine from falling into a high-rotation state in which the engine rotation speed exceeds the maximum rotation speed.
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公开(公告)号：US11377087B2
公开(公告)日：2022-07-05
申请号：US16923070
申请日：2020-07-07
发明人： Atsushi Tabata , Koichi Okuda , Tooru Matsubara , Takahiro Kimura
摘要： Since a supercharging pressure from a supercharger decreases when an actual rotation speed difference is equal to or less than a margin rotation speed difference, a response delay of an engine torque due to a response delay of the supercharging pressure in a high rotation curbing control unit can be appropriately curbed. A shortage of the engine torque with respect to a required engine torque due to a decrease in the supercharging pressure by a supercharging pressure decreasing unit is compensated for using an torque of a second rotary machine. Accordingly, it is possible to curb a decrease in power performance due to a decrease in the supercharging pressure and to prevent an engine rotation speed from falling into a high-rotation state in which the engine rotation speed exceeds a maximum rotation speed.
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