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71. 发明申请

US20220182006A1 CONTROL DEVICE 有权
公开(公告)号：US20220182006A1
公开(公告)日：2022-06-09
申请号：US17540595
申请日：2021-12-02
申请人： Hitachi Astemo, Ltd.
发明人： Yuta NAKAMURA , Masatoshi GOTO , Yoshinori SAGIYA , Kazunari KUROKAWA , Shugo UENO , Shintaro TAI
IPC分类号： H02P29/028 , H02M1/32 , H02P27/06 , H02P29/024
摘要： A control device that does not require arithmetic processing of a phase current can be provided. A control device in which a plurality of switching legs including a pair of semiconductor switching elements constituting an upper arm and a lower arm are provided in a number corresponding to the number of phases of a motor that is a load includes a switch short circuit detection unit configured to detect a short circuit failure of the semiconductor switching element, and a control unit configured to execute determination processing of determining whether the short circuit failure has occurred in the upper arm or the lower arm on the basis of a result of detection by the switch short circuit detection unit, and to set all the semiconductor switching elements that constitute an arm in which a short circuit failure has occurred on the basis of a result of the determination processing.

72. 发明授权

US11339736B2 Control device 有权
公开(公告)号：US11339736B2
公开(公告)日：2022-05-24
申请号：US17386212
申请日：2021-07-27
申请人： Hitachi Astemo, Ltd.
发明人： Masaya Kimura , Kyohei Matsumoto , Ryo Sasaki , Takuya Ikemoto , Daichi Kawakami
IPC分类号： F02D41/20
摘要： An electromagnetic valve driving device includes: a maximum detection unit configured to detect a maximum point when time-series data of a differential value of a counter electromotive voltage generated in a solenoid has changed from an increase to a decrease by retrospectively tracing the time-series data in an opposite direction of a time series; and a valve closing time detection unit configured to execute a determination process of retrospectively tracing the time-series data from the maximum point detected by the maximum detection unit in the opposite direction and scanning whether or not an amount of decrease in the differential value from the maximum point exceeds a predetermined threshold value and detect a maximum time, which is a time of the maximum point, as a valve closing time of a fuel injection valve when there is an event in which the amount of decrease exceeds the predetermined threshold value.

73. 发明申请

US20220158566A1 POWER CONVERSION DEVICE AND MANUFACTURING METHOD OF POWER CONVERSION DEVICE 有权
公开(公告)号：US20220158566A1
公开(公告)日：2022-05-19
申请号：US17439044
申请日：2020-01-30
申请人： Hitachi Astemo, Ltd.
发明人： Takeshi SEKI , Ayumu HATANAKA , Naoya SUTO
IPC分类号： H02M7/00 , H02M7/537 , H01L23/34 , H05K7/20 , H05K7/14
摘要： A negative-side bus bar 41 includes a capacitor connection portion and first and second negative terminal portions 271 exposed from a resin portion 44 and connected to a DC negative-side terminals 103 of first and second power semiconductor modules 30. A partition portion 252b of a case 252 is provided with a protruding portion 281 that protrudes toward a mold bus bar 40 further than an upper surface 257 of the first and second power semiconductor modules 30 and is thermally coupled to the mold bus bar 40. The projecting portion 281 is disposed between a root portion 275 of an exposed portion where the first negative electrode terminal portion 271 is exposed from the resin portion 44 and a second root portion 275 of an exposed portion where the second negative electrode terminal portion 271 is exposed from the resin portion 44. In this manner, a spatial distance and a creepage distance between the exposed portion from the resin portion of the mold bus bar and the power semiconductor module are made large and the temperature rise of a capacitor is suppressed.

74. 发明申请

US20220148344A1 ARITHMETIC OPERATION DEVICE AND DETERMINATION METHOD 有权
公开(公告)号：US20220148344A1
公开(公告)日：2022-05-12
申请号：US17433080
申请日：2020-02-21
申请人： Hitachi Astemo, Ltd.
发明人： Hidetoshi TERAOKA , Masashi YANO
IPC分类号： G07C5/00 , B60W50/00 , G08C17/02
摘要： There is provided an arithmetic operation device which is connected to a plurality of electronic control units. One or more electronic control units of the plurality of electronic control units constitute each of functions. The arithmetic operation device includes an external communication unit which receives, for each function, function configuration information including first verification information and first identification information of the one or more electronic control units constituting the function, an acquisition unit which acquires version information of software installed on the electronic control unit and second identification information of the electronic control unit from each of the plurality of electronic control units, a calculation unit which calculates, for each function, second verification information by using the version information acquired by the acquisition unit which is the version information of all the electronic control units constituting the function and the second identification information of all the electronic control units constituting the function, and a determination unit that determines, for each function, whether or not the first verification information and the second verification information match.

75. 发明申请

US20220134890A1 MOTOR DRIVE DEVICE AND ELECTRIC VEHICLE SYSTEM 有权
公开(公告)号：US20220134890A1
公开(公告)日：2022-05-05
申请号：US17284889
申请日：2019-09-12
申请人： Hitachi Astemo, Ltd.
发明人： Noriya NAKAO , Fumikazu TAKAHASHI , Kenichi YOSHIDA
IPC分类号： B60L15/02 , B60L15/20 , H02K7/00 , H02P21/30 , H02P27/12
摘要： A motor drive device (200) includes: a power conversion circuit (204) that drives an AC motor; and a controller (203) that controls the power conversion circuit. The controller includes: a command current calculation unit (206) that generates a command current according to command torque for the AC motor; a current control unit (208) that performs feedback control for adjusting a current applied to the AC motor to the command current; and a control gain setting unit (207) that calculates a control gain used for the feedback control based on the command torque and sets the calculated control gain in the current control unit. The control gain setting unit performs control such that a time from a decrease of an absolute value of the command torque to switching of the control gain is longer than a time from an increase of the absolute value of the command torque to switching of the control gain. As a result, deterioration of control stability of motor torque during a transient response is avoided.

76. 发明申请

US20220131440A1 Fuel Pump 有权
公开(公告)号：US20220131440A1
公开(公告)日：2022-04-28
申请号：US17430555
申请日：2020-02-05
申请人： Hitachi Astemo, Ltd.
发明人： Atsuji SAITO , Satoshi USUI
IPC分类号： H02K5/24 , F02M51/04
摘要： A coil component of an electromagnetic valve is made compact to achieve both low cost and improvement in sound vibration performance. Therefore, a high-pressure fuel pump of the present invention includes: a coil 3g; a magnetic core 3e that is arranged on a side opposite to a pressurizing chamber 11 with respect to a movable core 3h and attracts the movable core 3h when the coil 3g is energized; a yoke 3q arranged on a radially outer side of the coil 3g; a cover portion 3r that covers the coil 3g from an axially outer side; and a molded portion 17 that covers a radially outer side of the yoke 3q and an axially outer side of the cover portion 3r.

77. 发明申请

US20220126836A1 TRAVEL ROAD RECOGNITION DEVICE 有权
公开(公告)号：US20220126836A1
公开(公告)日：2022-04-28
申请号：US17426775
申请日：2020-01-30
申请人： Hitachi Astemo, Ltd.
发明人： Kimiyoshi MACHII , Takehito OGATA , Noriyasu HASEJIMA , Masayoshi KURODA , Kosuke SAKATA
IPC分类号： B60W40/076 , G01S17/89 , G06V20/56 , B60W60/00
摘要： Provided is a travel road recognition device that can accurately recognize a travel road end of a travel road on which an own vehicle travels. A travel road recognition device of the present invention is a travel road recognition device that recognizes the travel road end of the travel road on which an own vehicle 301 travels, and includes: a laser radar 101 that emits a laser bean from the own vehicle 301 toward the travel road; a road surface determination unit 203 that obtains a cross slope of the travel road based on coordinate values of a point cloud obtained by the laser radar 101; and a road end determination unit 204 that obtains a change point at which a slope angle changes in the cross slope of the travel road obtained by the road surface determination unit 203, and obtains coordinate values of at least one travel road end of both sides in a cross direction of the travel road based on the coordinate values of the change point.

78. 发明申请

US20220126406A1 PRODUCTION METHOD FOR CYLINDER DEVICE 有权
公开(公告)号：US20220126406A1
公开(公告)日：2022-04-28
申请号：US17434021
申请日：2020-01-15
申请人： HITACHI ASTEMO, LTD.
发明人： Shimpei TODA , Ryuichi YAMANAKA , Michinori NAKAYAMA , Daimu INOUE
IPC分类号： B23P15/10
摘要： A production method for a cylinder device includes a first liquid injection step of injecting a first predetermined amount of working fluid L into the inner cylinder, a first piston rod insertion step of inserting an assembly between the piston rod and the piston into the inner cylinder to dispose the piston at a predetermined position inside the inner cylinder, a second liquid injection step of injecting a second predetermined amount of the working fluid into an upper side of the piston inside the inner cylinder, and a closing step of closing the opening of the outer cylinder with the closing member.

79. 发明授权

US11313300B2 Device and method for controlling the start of an internal combustion engine 有权
公开(公告)号：US11313300B2
公开(公告)日：2022-04-26
申请号：US17422625
申请日：2019-12-24
申请人： Hitachi Astemo, Ltd.
发明人： Naoki Yoneya , Masayuki Saruwatari
IPC分类号： F02D41/00 , F02D41/06 , F02B19/12 , F02P5/15 , F02B19/18 , F02N19/02 , F02D41/40
摘要： The present invention relates to a device and a method for controlling the start of an internal combustion engine, wherein the internal combustion engine is equipped with an ignition device comprising a fuel-fed prechamber to ignite an air-fuel mixture in a main combustion chamber. In order to reduce the emissions of the internal combustion engine during engine start a prechamber heating operations is performed by injecting a predetermined amount of fuel into the prechamber and igniting an air-fuel-mixture therein, while the main fuel injector is deactivated during at least a first engine cycle after engine start request.

80. 发明申请

US20220104340A1 ELECTRONIC CONTROL DEVICE 有权
公开(公告)号：US20220104340A1
公开(公告)日：2022-03-31
申请号：US17420978
申请日：2019-11-05
申请人： HITACHI ASTEMO, LTD.
发明人： Naoki MORIYAMA
IPC分类号： H05K1/02 , H01G9/12 , H01G9/00
摘要： An electronic control device includes: a circuit board to which electronic components are mounted; an electrolytic capacitor that is mounted to the circuit board, and includes a bottom facing the circuit board, and includes a pressure reduction mechanism disposed in the bottom and structured to release internal pressure of the electrolytic capacitor; and a housing containing the circuit board. The housing includes a pocket that opens at a position to face the electrolytic capacitor mounted to the circuit board and contains the electrolytic capacitor. The pocket includes in its inner periphery a bottom wall surface and a side wall surface that surround the electrolytic capacitor. The electrolytic capacitor is covered by heat dissipation material filling a space between the pocket and a part of the electrolytic capacitor wherein the part faces the bottom wall surface and the side wall surface of the pocket.

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