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公开(公告)号：US12085555B2
公开(公告)日：2024-09-10
申请号：US17369494
申请日：2021-07-07
发明人： Atsushi Tabata , Ken Imamura , Kota Fujii , Koichi Okuda
CPC分类号： G01N33/2888 , F15B19/00 , F16H57/0405 , G01N21/255 , G01N33/2841
摘要： A deterioration estimation device includes a storage device and an execution device. The storage device is configured to store mapping data defining a mapping that outputs an output variable indicating the degree of deterioration of oil when an input variable is input. The mapping includes, as the input variable, a color variable that is a variable indicating a color of the oil and a hydrogen ion variable that is a variable indicating a hydrogen ion concentration of the oil. The execution device is configured to execute an acquisition process that is a process of acquiring the input variable and a calculation process of inputting the input variable acquired through the acquisition process to the mapping to output a value of the output variable.
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公开(公告)号：US12085032B2
公开(公告)日：2024-09-10
申请号：US18434226
申请日：2024-02-06
发明人： Atsushi Tabata , Koichi Okuda , Nobuhiko Satake , Daiki Sato
IPC分类号： F02D41/02
CPC分类号： F02D41/0235 , F02D2200/0802
摘要： A controller for an engine includes processing circuitry. The processing circuitry executes an obtaining process that obtains a catalyst temperature, which is a temperature of a catalyst. The processing circuitry executes a setting process that sets a target air-fuel ratio that is a target value of an air-fuel ratio in the cylinder. The temperature of the catalyst at which an efficiency of nitrogen oxide reduction by the catalyst is the highest is referred to as a prescribed temperature. In the setting process, the processing circuitry sets the target air-fuel ratio to be higher when the catalyst temperature is a first value that is lower than the prescribed temperature, than when the catalyst temperature is a second value that is lower than or equal to the prescribed temperature and higher than the first value.
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公开(公告)号：US12059957B2
公开(公告)日：2024-08-13
申请号：US17804139
申请日：2022-05-26
发明人： Atsushi Tabata , Koichi Okuda , Tatsuya Imamura , Yohei Habata , Koji Takaira
摘要： A vehicle driving apparatus includes: an engine; first and second rotary electric machines; a fluid transmission device including an input-side rotary element to which the engine and the first rotary electric machine are connected; and a control device configured to control an operation point of the engine by adjusting an electrical path amount in an electrical path between the first and second rotary electric machines. When a certain running mode is established, the control device is configured to correct the electrical path amount to an increased electrical path amount while maintaining an power of the engine requested by an operation of a vehicle driver, and to drive the second rotary electric machine, while controlling an output torque of the first rotary electric machine such that the electrical path amount transferred from the first rotary electric machine to the second rotary electric machine becomes the increased electrical path amount.
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公开(公告)号：US12026992B2
公开(公告)日：2024-07-02
申请号：US17106895
申请日：2020-11-30
发明人： Atsushi Tabata , Koichi Okuda , Tooru Matsubara , Hiromasa Tatsushiro , Kota Fujii , Yuuki Makino
CPC分类号： G07C5/0808 , B60R16/0234 , F16H57/00 , G06N20/00 , G07C5/006 , F16H61/30
摘要： A vehicle control device performs learning to correct a parameter used in a control program for controlling a vehicle. The vehicle control device stores learning data obtained by the learning in a storage unit. The vehicle control device determines whether or not a part controlled by the parameter has been replaced, and resets the learning data stored in the storage unit when it is determined that the part has been replaced. The vehicle control device determines that the part has been replaced based on an adjustment that is performed upon replacement of the part. The vehicle control device quickly mitigates degradation of the controllability of the vehicle after replacement of the part.
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公开(公告)号：US11958471B2
公开(公告)日：2024-04-16
申请号：US17354260
申请日：2021-06-22
发明人： Atsushi Tabata , Koichi Okuda , Koji Takaira , Akinori Takahashi , Yuuki Makino
IPC分类号： B60K23/08 , B60K6/24 , B60K6/26 , B60K17/02 , B60K17/12 , B60K17/35 , B60K23/00 , B60K25/08 , B60W20/15 , B60K6/543 , B60K6/547 , F16D28/00
CPC分类号： B60W20/15 , B60K6/24 , B60K6/26 , B60K17/02 , B60K17/12 , B60K17/35 , B60K23/00 , B60K25/08 , B60K6/543 , B60K6/547 , B60K23/0808 , F16D28/00
摘要： A four-wheel drive vehicle includes: a drive-power distribution device for distributing a drive power from an engine to main and auxiliary drive wheels with a drive-power distribution ratio between the main drive wheels and auxiliary drive wheels; and a control apparatus for controlling an electric motor such that the drive-power distribution ratio becomes a target distribution ratio value, by setting an electric-current command value for driving an electric motor. The control apparatus is configured, in a drive-power transmitted state in which the drive power is transmitted to the drive-power distribution device, to execute a command-value reduction control operation for causing the electric motor to be driven with the electric-current command value being set to a value smaller than in a drive-power non-transmitted state in which the drive power is not being transmitted to the drive-power distribution device.
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公开(公告)号：US11891014B2
公开(公告)日：2024-02-06
申请号：US17164993
申请日：2021-02-02
发明人： Takashi Yuma , Atsushi Tabata , Koichi Okuda , Atsushi Kamada , Kazumi Shine
IPC分类号： B60R25/06 , B60R25/32 , B60W60/00 , B60W10/10 , B60R25/31 , B60W40/08 , B60R25/24 , B60R25/20
CPC分类号： B60R25/06 , B60R25/20 , B60R25/24 , B60R25/31 , B60R25/32 , B60W10/10 , B60W40/08 , B60W60/001 , B60W2040/0809 , B60W2520/10
摘要： A vehicle includes a controller. The controller is configured to perform authentication of a portable device by communication with the portable device when startup of a system of the vehicle is instructed, when the system is off, or when the startup of the system of the vehicle is instructed and the system is off. The controller is configured to perform the startup of the system of the vehicle when the startup of the system of the vehicle is instructed, under a condition that the authentication of the portable device is successful. The controller is configured to perform reauthentication of the portable device when predetermined movement of the vehicle is detected after the startup of the system of the vehicle, and perform theft prevention processing when the reauthentication of the portable device fails.
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公开(公告)号：US11762655B2
公开(公告)日：2023-09-19
申请号：US17590859
申请日：2022-02-02
发明人： Koichi Okuda , Atsushi Tabata , Masafumi Yamamoto , Yuuki Makino
CPC分类号： G06F8/66 , B60W50/00 , B60S5/00 , B60W2050/0083 , B60W2556/45
摘要： A vehicle control apparatus including: a storage portion configured to store therein a vehicle control software for controlling a vehicle; a receiving portion configured to receive an update software from an external server; and an updating portion configured to update the vehicle control software stored in the storage portion, to the update software received by the receiving portion. The updating portion is configured to determine whether the vehicle is in a long-time requiring state that requires a long time for making a repair of the vehicle which is needed in case update of the vehicle control software is not successfully completed. The updating portion is configured to execute the update of the vehicle control software when determining that the vehicle is not in the long-time requiring state, and is configured to withhold the update of the vehicle control software when determining that the vehicle is in the long-time requiring state.
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公开(公告)号：US11725726B2
公开(公告)日：2023-08-15
申请号：US17092713
申请日：2020-11-09
CPC分类号： F16H61/12 , G07C5/0808 , F16H2061/1264 , F16H2061/1276
摘要： A vehicle anomaly analysis apparatus for analyzing an anomaly having occurred in a shift control operation executed in an automatic transmission of a vehicle, by using a rotational speed changed in process of the shift control operation. The vehicle anomaly analysis apparatus specifies cause of the anomaly in the shift control operation, by applying an anomaly-cause specifying model that indicates a relationship between a manner of chronological change of a racing amount and the cause of the anomaly in the shift control operation, to the manner of the chronological change of the racing amount upon occurrence of the anomaly in the shift control operation. The racing amount is an amount of increase of the rotational speed in the process of the shift control operation, relative to a reference rotational speed that is based on a gear ratio and an output rotational speed of the automatic transmission.
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公开(公告)号：US11628821B2
公开(公告)日：2023-04-18
申请号：US16934469
申请日：2020-07-21
IPC分类号： F02D41/10 , B60W20/15 , B60W30/188 , B60W10/06 , B60W10/10
摘要： When an acceleration request is issued, an electronic control unit for a hybrid vehicle performs control for producing an acceleration feeling of setting a target engine rotation speed to an initial rotation speed (=basic initial value+initial value correction value) which is lower than an optimal-fuel-efficiency rotation speed at which required engine power is able to be most efficiently output and increasing the engine rotation speed from the initial rotation speed to the optimal-fuel-efficiency rotation speed at a rotation speed increase rate (=basic increase rate+increase rate correction value) based on the elapse of time. When the target supercharging pressure is high, the initial value correction value is set to a greater value and the increase rate correction value is set to a greater value than when the target supercharging pressure is low.
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公开(公告)号：US11440548B2
公开(公告)日：2022-09-13
申请号：US17325365
申请日：2021-05-20
发明人： Atsushi Tabata , Koichi Okuda , Yuuki Makino
IPC分类号： B60W30/18 , B60K17/356 , B60K17/35 , B60L7/18 , B60K1/04 , B60L15/20 , B60L7/26 , B60W10/08 , B60W10/184 , B60W10/02 , B60K17/02
摘要： A four-wheel drive vehicle includes: (a) main drive wheels and auxiliary drive wheels; (b) a rotating machine as a drive power source; (c) a drive-power distribution clutch configured to allocate a part of a drive power outputted to the main drive wheels from the drive power source, to the auxiliary drive wheels, so as to distribute the drive power to the main drive wheels and the auxiliary drive wheels with a drive-power distribution ratio between the auxiliary drive wheels and the main drive wheels, such that the drive-power distribution ratio is variable with an engaging force of the drive-power distribution clutch being controlled; and (d) a control apparatus configured, when determining that a heat load of the drive-power distribution clutch is large during deceleration running of the vehicle, to limit a regenerative torque of the rotating machine, as compared with when determining that the heat load is small.
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