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公开(公告)号：US20220082421A1
公开(公告)日：2022-03-17
申请号：US17423946
申请日：2020-01-21
Applicant: Hitachi Astemo, Ltd.
Inventor： Masatoshi OGATA , Norio ISHITSUKA , Takahiro MIKI , Akira UENODAN , Takayuki YOGO
Abstract: An object is to improve measurement accuracy of a thermal air flow meter. A flow-rate measuring device comprising: a sensor assembly having a flow-rate detecting element; a circuit board on which the sensor assembly is mounted; and a housing on which the circuit board is mounted, wherein the sensor assembly is mounted on the circuit board such that a detection portion side of the flow-rate detecting element is closer to the housing, and the sensor assembly includes a contact portion in contact with the housing on the detection portion side.
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公开(公告)号：US20220080987A1
公开(公告)日：2022-03-17
申请号：US17420045
申请日：2019-12-19
Applicant: Hitachi Astemo, Ltd.
Inventor： Teppei HIROTSU , Nobuyasu KANEKAWA , Atsushi ARATA
IPC: B60W50/02 , B60W50/023 , B60W60/00
Abstract: Provided is a device that prevents a vehicle behavior from being unstable when an operation is continued using a degeneration function at a time of failure of a drive unit command value generation function in an autonomous driving system. A future actuator command value outputted by a main function unit for generating a drive unit command value and a simple actuator command value outputted by the degeneration function of generating a drive unit command value are synthesized using a weighting factor that changes with time.
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公开(公告)号：US20220074488A1
公开(公告)日：2022-03-10
申请号：US17417868
申请日：2019-12-12
Applicant: Hitachi Astemo, Ltd.
Inventor： Shogo MIYAMOTO
IPC: F16H57/04
Abstract: An object of the present invention is to appropriately control cooling water and oil according to situations. A computing device controls a flow rate of cooling water supplied to a motor and an oil pump that supplies oil from a gear box attached to the motor to a coil of the motor. The computing device suppresses the flow rate of the cooling water supplied to the motor when a temperature of oil in the gear box is less than a first threshold, and a temperature of the coil is less than a second threshold, and operates the oil pump.
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公开(公告)号：US20220074323A1
公开(公告)日：2022-03-10
申请号：US17424318
申请日：2019-11-21
Applicant: HITACHI ASTEMO, LTD.
Inventor： Yasuhide TAKADA
Abstract: In a first state: a spool valve of a control valve is disposed such that a second spool oil passage is closer to a second side in a longitudinal direction than a first spool oil passage; and as the spool valve has traveled toward the second side against a biasing force of a biasing member, a first port communicates with a second port via the first spool oil passage, a first sleeve oil passage, and the second spool oil passage. In a second state: the spool valve is disposed such that the first spool oil passage is closer to the second side than the second spool oil passage; and as the spool valve has traveled toward a first side in the longitudinal direction, the first port communicates with the second port via the first spool oil passage, the first sleeve oil passage, and the second spool oil passage.
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公开(公告)号：US20220073133A1
公开(公告)日：2022-03-10
申请号：US17416126
申请日：2019-08-22
Applicant: Hitachi Astemo, Ltd.
Inventor： Go SAKAYORI , Hiroshi NAKANO , Yoshiji HASEGAWA , Tomoaki FUJIBAYASHI , Junya TAKAHASHI
Abstract: A steering control device for reducing a steering load on the driver by adjusting a gain of a rear wheel steering angle with respect to a front wheel steering angle operated by the driver according to a relative relationship between the vehicle and the parking frame to enable fine steering of the own vehicle near the parking frame when the four-wheel steering vehicle is parked. The steering control device is configured to control a rear wheel steering angle by a rear wheel steering system based on a front wheel steering angle operated by a driver, and includes an arithmetic device configured to reduce an absolute value of a gain of the rear wheel steering angle with respect to the front wheel steering angle as a positional relationship between an own vehicle and a parking frame comes closer when an own vehicle shifts to a parking driving mode.
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Patent Agency Ranking
公开(公告)号：US20220063643A1
公开(公告)日：2022-03-03
申请号：US17418591
申请日：2019-12-20
Applicant: Hitachi Astemo, Ltd.
Inventor： Shota FUJIWARA , Kazuya YAMANO , Masaki ITABASHI , Toshiaki MEGURO
Abstract: According to one aspect of the present invention, a control apparatus for an in-vehicle apparatus includes a first sensor and a second sensor configured to output sensor data, and a first microprocessor and a second microprocessor. A second sensor data request signal generation portion of the second microprocessor is configured to generate a second sensor data request signal. The first microprocessor includes a first sensor data request signal generation portion, a first data comparison portion, a first abnormality determination portion, and a first instruction signal generation portion. The first sensor data request signal generation portion is configured to generate a first sensor data request signal. The first data comparison portion is configured to compare first comparison data selected from a plurality of an first sensor data and second comparison data selected from a plurality of an second sensor data. The first abnormality determination portion is configured to determine whether an abnormality has occurred in an sensor portion based on a result of the comparison by the first data comparison portion.
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公开(公告)号：US20220037940A1
公开(公告)日：2022-02-03
申请号：US17298785
申请日：2019-12-13
Applicant: Hitachi Astemo, Ltd.
Inventor： Takuya MIYAGI , Toshiki TAKAHASHI , Hayato FUJITA , Yuichiro BABA , Kenji NAKAYAMA
Abstract: An object of the present invention is to reduce stress caused by press-fitting of a shaft on an outer edge portion side of a rotor. A rotor for a rotating electric machine includes a shaft and a rotor iron core, the shaft coupled to the rotor iron core. The rotor iron core includes: an outer edge portion housing a magnet; an inner edge portion coupled to the shaft; and a rib portion having a lightening portion that is formed inside between the outer edge portion and the inner edge portion. The rib portion includes: a through-hole forming portion connected to the outer edge portion and having a through-hole inside; and a bridge portion connecting the through-hole forming portion and the inner edge portion. The bridge portion includes: a second bridge portion connected to the through-hole forming portion and protruding outward; and a first bridge portion having one end connected to the inner edge portion and another end connected to the second bridge portion. A bent portion is provided at a position connecting the first bridge portion and the second bridge portion.
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公开(公告)号：US20220024513A1
公开(公告)日：2022-01-27
申请号：US17293785
申请日：2019-12-12
Applicant: Hitachi Astemo, Ltd.
Inventor： Tomohiro FUKUDA
Abstract: The assembling performance of an electronic control device can be improved. An electronic control device includes a control board 12 and a power source conversion board 13. The control board 12 includes a first power source terminal 15, a first GND terminal 16, and a male floating connector 17 on one surface. The power source conversion board 13 includes a second power source gripping terminal 18 electrically connected to the first power source terminal 15, a second GND gripping terminal 19 electrically connected to the first GND terminal 16, and a female floating connector 20 electrically connected to a male floating connector 17 on one surface.
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公开(公告)号：US20220024456A1
公开(公告)日：2022-01-27
申请号：US17293771
申请日：2019-11-27
Applicant: Hitachi Astemo, Ltd.
Inventor： Shigemi OONO , Sadato HORIUCHI
IPC: B60W30/188 , B60W50/02 , B60W50/029 , B60W40/105
Abstract: It has been difficult to appropriately determine the abnormality of a drive source due to the influence of variation in driving operation amount and operation state of a vehicle. In this regard, an in-vehicle control device 217 includes: a requested torque calculation unit 100 which calculates a requested torque on the basis of a driving state of a vehicle; a requested torque change amount calculation unit which calculates the amount of change in requested torque per unit time as a requested torque change amount; an estimated generation torque calculation unit 111 which calculates estimated generation torque estimated as being generated by an engine 201; an estimated generation torque change amount calculation unit which calculates the amount of change in estimated generation torque per unit time as an estimated generation torque change amount; and an abnormality detection unit 112 which detects an abnormality of the engine 201 on the basis of the integrated value of a difference between the requested torque change amount and the estimated generation torque change amount, and outputs abnormality determination for the engine 201.
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公开(公告)号：US20220017107A1
公开(公告)日：2022-01-20
申请号：US17414795
申请日：2019-11-20
Applicant: Hitachi Astemo, Ltd.
Inventor： Hiroshi SHINODA , Hideyuki SAKAMOTO
IPC: B60W50/02 , B60W50/029 , B60W50/035 , B60W60/00
Abstract: An autonomous drive ECU 1 includes: at least two microcomputers 10 and 30 capable of receiving sensing data from a plurality of sensors 61; failure detection units 11 and 31 that detect a failure of the plurality of sensors 61 or the microcomputers 10 and 30; a mode selection unit 33 that selects a normal operation mode and a fallback operation mode; and a sensor selection unit that selects the sensor 61 based on a failure part detected by the failure detection unit 31 or a surrounding situation of an own vehicle calculated from the sensing data. Any of the at least two microcomputers 10 and 30 generates a drive signal for operating an actuator using the sensing data received from the sensor 61 selected by the sensor selection unit in the case of the fallback operation mode.
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