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公开(公告)号：US20150039913A1
公开(公告)日：2015-02-05
申请号：US14379709
申请日：2013-02-01
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Yasushi Sugiyama , Takuya Mayuzumi , Ryosuke Ishida , Yasuhiko Okada , Kiyoomi Kadoya , Kenichi Hoshino
CPC classification number: G06F1/28 , B60W10/18 , B60W2600/00 , B60W2710/18 , G01R19/16538 , G01R21/006 , G01R31/40 , G06F1/30 , G06F1/305
Abstract: Disclosed is an electronic control unit capable of identifying an abnormality in a power supply voltage without narrowing the operating voltage range, and having minimal effects on cost and the circuit mounting surface area. The ECU includes a microcomputer containing an input terminal VCCin and an input terminal Vrin, a power supply IC that supplies a power supply voltage VCC to the input terminal VCCin, and as a reference-voltage-generator circuit a voltage-divider resistor and a voltage-divider resistor configuring a voltage-dividing circuit that outputs a sub-divided voltage Vc is sub-divided from the power supply voltage VCC, a capacitor coupled at one end to the input terminal Vrin and coupled on at the other end to ground, and a voltage isolation element coupled between the voltage-dividing circuit and the input terminal Vrin.
Abstract translation: 公开了一种电子控制单元，其能够识别电源电压的异常而不使工作电压范围变窄，并且对成本和电路安装表面积的影响最小。 ECU包括微型计算机，其包含输入端子VCCin和输入端子Vrin，向输入端子VCCin提供电源电压VCC的电源IC，以及作为参考电压发生器电路的分压电阻器和电压 将构成分压电路Vc的分压电阻构成为从电源电压VCC分压，一端耦合到输入端子Vrin并在另一端耦合到地， 耦合在分压电路和输入端子Vrin之间的电压隔离元件。
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公开(公告)号：US10202925B2
公开(公告)日：2019-02-12
申请号：US15121696
申请日：2015-01-19
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Satoshi Kojima , Takuya Mayuzumi
Abstract: According to the present invention, by providing control whereby a rising slope or a descending slope of step-up current flowing to a step-up coil is detected, and corrections are made to step-up switching control, the step-up upper and lower limit current values of the step-up circuit can be controlled within intended current threshold values regardless of constant modifications or change in characteristics due to fluctuations of the battery power supply voltage or degradation of step-up circuit elements over time; heat emission by step-up circuit elements can be kept to a minimum; and the step-up recovery time can be adjusted to a constant value regardless of the slope of the step-up current.
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公开(公告)号：US10280862B2
公开(公告)日：2019-05-07
申请号：US15430757
申请日：2017-02-13
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Ryo Kusakabe , Motoyuki Abe , Hideharu Ehara , Tohru Ishikawa , Takuya Mayuzumi , Kenji Hiraku
Abstract: In a drive unit of a fuel injection device, an electric current is supplied to the fuel injection device by applying a high voltage to the fuel injection device from a high voltage source whose voltage is boosted to a voltage higher than a battery voltage at the time of opening a valve of the fuel injection device. Thereafter, the electric current supplied to the fuel injection device is lowered to a current value at which a valve element cannot be held in a valve open state by stopping the applying of the high voltage from the high voltage source. Thereafter, in a stage where a supply current is switched to a hold current, another high voltage is applied to the fuel injection device from the high voltage source.
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公开(公告)号：US10082117B2
公开(公告)日：2018-09-25
申请号：US15134642
申请日：2016-04-21
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Ryo Kusakabe , Motoyuki Abe , Yoshihito Yasukawa , Noriyuki Maekawa , Takuya Mayuzumi , Tohru Ishikawa
CPC classification number: F02M51/0653 , F02D41/20 , F02D2041/2013 , F02D2041/2055 , F02D2041/2058 , F02D2200/0618 , F02M45/12 , F02M51/0671 , F02M51/0685 , F02M59/366 , F02M61/1833 , F02M63/0033
Abstract: A method of controlling a fuel injection device that can control a small amount of injection is provided. A fuel injection device for use in an internal combustion engine, includes: a valve body that can open and close a fuel passage, a needle that transfers a force with the valve body, and executes valve opening/closing operation, and an electromagnet that includes a coil and a magnetic core provided as a driver for driving the needle, and a cylindrical nozzle holder disposed on an outer periphery of the magnetic core and the needle, in which a current is supplied to the coil to exert a magnetic attractive force between the magnetic core and the needle to open the valve body.
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公开(公告)号：US09694694B2
公开(公告)日：2017-07-04
申请号：US14377715
申请日：2013-01-21
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Ayumu Hatanaka , Takuya Mayuzumi , Chihiro Sato
CPC classification number: B60L11/18 , H02M1/08 , H02M1/14 , H02M1/44 , H02M3/156 , H02M3/158 , H02M2001/0006
Abstract: Provided is an in-vehicle step-down switching power supply capable of obtaining a stable output while suppressing nose in a harmful frequency band even when an input voltage decreases. The in-vehicle step-down switching power supply includes a switching frequency control unit and the switching frequency control unit includes a switching frequency range setting unit that changes a switching frequency between fa and fb and a switching frequency path setting unit that skips a frequency band from fd to fe between fa and fb, via an intermediate frequency fc between fa and fb.
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Patent Agency Ranking
公开(公告)号：US09600047B2
公开(公告)日：2017-03-21
申请号：US14379709
申请日：2013-02-01
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Yasushi Sugiyama , Takuya Mayuzumi , Ryosuke Ishida , Yasuhiko Okada , Kiyoomi Kadoya , Kenichi Hoshino
CPC classification number: G06F1/28 , B60W10/18 , B60W2600/00 , B60W2710/18 , G01R19/16538 , G01R21/006 , G01R31/40 , G06F1/30 , G06F1/305
Abstract: Disclosed is an electronic control unit capable of identifying an abnormality in a power supply voltage without narrowing the operating voltage range, and having minimal effects on cost and the circuit mounting surface area. The ECU includes a microcomputer containing an input terminal VCCin and an input terminal Vrin, a power supply IC that supplies a power supply voltage VCC to the input terminal VCCin, and as a reference-voltage-generator circuit a voltage-divider resistor and a voltage-divider resistor configuring a voltage-dividing circuit that outputs a sub-divided voltage Vc is sub-divided from the power supply voltage VCC, a capacitor coupled at one end to the input terminal Vrin and coupled on at the other end to ground, and a voltage isolation element coupled between the voltage-dividing circuit and the input terminal Vrin.
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公开(公告)号：US09160490B2
公开(公告)日：2015-10-13
申请号：US14376304
申请日：2013-02-01
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Teppei Hirotsu , Nobuyasu Kanekawa , Takuya Mayuzumi , Tsutomu Yamada , Chihiro Sato
CPC classification number: H04L1/0047 , F02D41/20 , F02D41/266 , G08C19/16 , H04L1/0042
Abstract: By reducing the serial transmission amount of pulses between a driving IC and a control IC, the transmission times of various commands other than the transmission time of the pulses can be secured, so that the improvement of reliability and high performance of the entirety of an electronic control device can be realized. The serial transmission between the driving IC and the control IC is started at the time when the edges of the pulses are detected.
Abstract translation: 通过减少驱动IC和控制IC之间的脉冲串行传输量，可以确保除了脉冲的传输时间以外的各种命令的传输时间，从而提高整个电子设备的可靠性和高性能 可实现控制装置。 驱动IC和控制IC之间的串行传输在检测到脉冲的边沿时开始。
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公开(公告)号：US10859047B2
公开(公告)日：2020-12-08
申请号：US16110551
申请日：2018-08-23
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Ryo Kusakabe , Motoyuki Abe , Yoshihito Yasukawa , Noriyuki Maekawa , Takuya Mayuzumi , Tohru Ishikawa
Abstract: A drive unit of a fuel injection device includes a driver circuit. The driver circuit opens and closes a valve element of the fuel injection device by supplying a drive current to the fuel injection device. The driver circuit supplies the drive current to open the valve element and sets the drive current to zero in an intermediate lift area. The intermediate lift area is an area is which a lift amount of the valve element is smaller than a maximum target lift amount.
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公开(公告)号：US10002699B2
公开(公告)日：2018-06-19
申请号：US14785528
申请日：2013-04-25
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Kiyoshi Aiki , Ayumu Hatanaka , Takuya Mayuzumi , Katsuya Oyama , Ryosuke Ishida , Yasushi Sugiyama
CPC classification number: H01F7/204 , F02D41/20 , F02D2041/001 , F02D2041/2041 , H02M1/44 , H02M3/155 , H02M2003/1555 , H03K17/162
Abstract: The present invention is to provide a magnet coil drive control device that can efficiently suppress conduction noise while reducing the capacitance of a capacitor. A capacitor and an impedance element are arranged in series on the connecting line connecting the positive electrode line and the negative electrode line of a DC power supply, the connecting line between the capacitor and the impedance element is connected to one end of a magnet coil via a freewheeling diode, and the portion between the freewheeling diode and the one end of the magnet coil is connected to the positive electrode line or the negative electrode line by a switching element. Conduction noise caused by the driving current of the magnet coil can be suppressed by the impedance element, and the capacitance of the capacitor can be further reduced. Accordingly, the magnet coil drive control device can be made smaller in size.
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公开(公告)号：US20170152803A1
公开(公告)日：2017-06-01
申请号：US15430757
申请日：2017-02-13
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： RYO KUSAKABE , Motoyuki Abe , Hideharu Ehara , Tohru Ishikawa , Takuya Mayuzumi , Kenji Hiraku
CPC classification number: F02D41/20 , F02D41/3005 , F02D2041/2003 , F02D2041/2013 , F02D2041/2037 , F02D2041/2051 , F02M51/061 , F02M69/04
Abstract: In a drive unit of a fuel injection device, an electric current is supplied to the fuel injection device by applying a high voltage to the fuel injection device from a high voltage source whose voltage is boosted to a voltage higher than a battery voltage at the time of opening a valve of the fuel injection device. Thereafter, the electric current supplied to the fuel injection device is lowered to a current value at which a valve element cannot be held in a valve open state by stopping the applying of the high voltage from the high voltage source. Thereafter, in a stage where a supply current is switched to a hold current, another high voltage is applied to the fuel injection device from the high voltage source.
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