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公开(公告)号：US20170298882A1
公开(公告)日：2017-10-19
申请号：US15640838
申请日：2017-07-03
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Yoshihito YASUKAWA , Hideharu EHARA , Tohru ISHIKAWA , Motoyuki ABE , Ryo KUSAKABE
CPC classification number: F02M51/0657 , F02D41/20 , F02M45/00 , F02M45/08 , F02M51/061 , F02M51/0625 , F02M51/066 , F02M61/04 , F02M61/10 , F02M61/20 , F02M2200/08
Abstract: A fuel injection valve includes a valve body, a coil, an inner fixed iron core that is arranged on an inner peripheral side of the coil, and an outer fixed iron core that is arranged on an outer peripheral side of the coil. The fuel injection valve also includes a movable element that is configured to be attracted to the inner fixed iron core and the outer fixed iron core, wherein the movable element is configured to be separable from the valve body and is configured to move the valve body.
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公开(公告)号：US20160230722A1
公开(公告)日：2016-08-11
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.
Abstract translation: 提供了一种控制能够控制少量喷射的燃料喷射装置的方法。 一种用于内燃机的燃料喷射装置，包括：能够打开和关闭燃料通道的阀体，与阀体传递力并执行阀打开/关闭操作的针，以及电磁体，其包括 设置为用于驱动针的驱动器的线圈和磁芯，以及设置在磁芯和针的外周上的圆柱形喷嘴保持架，其中电流被供应到线圈以在第一和第二磁芯之间施加磁力吸引力 磁芯和针头打开阀体。
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公开(公告)号：US20160025052A1
公开(公告)日：2016-01-28
申请号：US14774925
申请日：2014-01-27
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Yoshihito YASUKAWA , Hideharu EHARA , Tohru ISHIKAWA , Kiyotaka OGURA , Motoyuki ABE , Ryo KUSAKABE , Akiyasu MIYAMOTO
CPC classification number: F02M51/0614 , F02M51/0625 , F02M51/0671 , F02M61/042 , F02M63/0012 , F02M2200/8084 , F02M2200/9069
Abstract: In an electromagnetic fuel injection which is structured such that both end surfaces of an inner circumferential iron core portion and an outer circumferential iron core portion face a movable iron core, and a non-magnetic portion made of a metal material is provided between both end surfaces, an object of the present invention is to realize a structure of the electromagnetic fuel injector in which a surface of a target object is unlikely to be affected by a heat treatment with the surface facing the movable iron core. In an electromagnetic fuel injector 1 of the present invention which is structured such that both end surfaces of an inner circumferential iron core portion 401a and an outer circumferential iron core portion 401b face a movable iron core 402, and a non-magnetic portion 401d made of a metal material is provided between both end surfaces, in order to achieve this object, heat in a target member to be heat treated is generated by applying energy to a target member's surface which is different from a target member's surface that faces the movable iron core 402. More preferably, energy is applied to a surface different from a surface on a side that faces the movable iron core 402.
Abstract translation: 在电磁燃料喷射中，内周铁心部分和外周铁芯部分的两个端面面对可动铁芯，以及由金属材料制成的非磁性部分设置在两个端面之间 本发明的目的是实现电磁燃料喷射器的结构，其中目标物体的表面不易受到与可动铁芯面对的表面的热处理的影响。 在本发明的电磁燃料喷射器1中，内周铁芯部401a和外周铁芯部401b的两端面与可动铁芯402相对，而非磁性部401d由 在两个端面之间设置有金属材料，为了达到上述目的，通过向目标构件的表面施加能量而产生热处理对象构件的热量，该目标构件的表面与目标构件的面对可动铁芯的表面不同 更优选地，能量施加到与面对可动铁芯402的一侧上的表面不同的表面。
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公开(公告)号：US20150377176A1
公开(公告)日：2015-12-31
申请号：US14766253
申请日：2014-01-24
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Ayumu HATANAKA , Ryo KUSAKABE , Motoyuki ABE , Toshihiro AONO , Teppei HIROTSU , Hideyuki SAKAMOTO , Takao FUKUDA , Hideharu EHARA , Masahiro TOYOHARA , Akira NISHIOKA , Toshio HORI , Kiyoshi AIKI
CPC classification number: F02D41/401 , F02D41/20 , F02D41/3011 , F02D2041/2006 , F02D2041/2055 , F02D2041/2058 , F02M51/061 , F02M63/0017
Abstract: An object of this disclosure is to provide a fuel injection device that can reliably detect an operation timing of a valve body, that is, a valve opening timing with high accuracy. The current of an electromagnetic valve reaches I2 at time t3, an FET 201 and an FET 221 are turned on, and a battery voltage VB is applied to the electromagnetic valve until time t5 is reached. The amount of displacement of the valve body reaches a target amount of control lift at time t4 between time t3 and time t5, that is, a movable core 304 comes into contact with a fixed core 301. The detection of the valve opening timing is performed during the period from time t3 to time t5.
Abstract translation: 本公开的目的在于提供一种能够可靠地检测阀体的动作正时，即高精度的开阀定时的燃料喷射装置。 在时间t3，电磁阀的电流达到I2，FET201和FET221导通，并且电池电压VB被施加到电磁阀直到时刻t5。 在时刻t3〜时刻t5之间的时刻t4，即可动铁心304与固定铁心301接触，阀体的位移量达到目标控制升程量。进行开阀定时的检测 在时间t3到时间t5。
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公开(公告)号：US20150354515A1
公开(公告)日：2015-12-10
申请号：US14763029
申请日：2014-01-10
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Yoshihito YASUKAWA , Hideharu EHARA , Tohru ISHIKAWA , Motoyuki ABE , Ryo KUSAKABE
CPC classification number: F02M51/0657 , F02D41/20 , F02M45/00 , F02M45/08 , F02M51/061 , F02M51/0625 , F02M51/066 , F02M61/04 , F02M61/10 , F02M61/20 , F02M2200/08
Abstract: A fuel injection valve having a variable stroke mechanism is constructed. A valve body provided to be slidable; a first movable element for cooperating with the valve body; an inner fixed iron core provided at a position to oppose a second movable element; an outer fixed iron core; and a coil are included. A lift amount of the second movable element is set larger than a lift amount of the first movable element, and a portion of the second movable element is projected into the first movable element. In this way, large and small lifts are constituted by using a difference between magnetic attractive forces that are generated in the first movable element and the second movable element by a current supplied to the coil.
Abstract translation: 具有可变冲程机构的燃料喷射阀构成。 设置为可滑动的阀体; 用于与阀体配合的第一可移动元件; 内固定铁芯，设置在与第二可移动元件相对的位置; 外固定铁芯; 并包括线圈。 第二可移动元件的提升量被设定为大于第一可移动元件的提升量，并且第二可移动元件的一部分突出到第一可移动元件中。 以这种方式，通过使用通过提供给线圈的电流在第一可移动元件和第二可移动元件中产生的吸引力之间的差异来构成大而小的电梯。
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Patent Agency Ranking
公开(公告)号：US20210293200A1
公开(公告)日：2021-09-23
申请号：US17258352
申请日：2019-08-08
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Yoshihiro SUKEGAWA , Masayuki SARUWATARI , Ryo KUSAKABE
Abstract: Emission of unburned hydrocarbons and soot is reduced while ensuring startability (ignitability) in a cold start mode of an internal combustion engine. Thus, fuel is injected with a first injection rate as an injection rate of a fuel injection valve 100 in a warm state in which a temperature of an engine 30 is equal to or higher than a set temperature, and the fuel is injected with a second injection rate lower than the first injection rate as the injection rate of the fuel injection valve 100 in a cold state in which the temperature of the engine 30 is lower than the set temperature at the same fuel pressure as that in the warm state.
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公开(公告)号：US20190331055A1
公开(公告)日：2019-10-31
申请号：US16343632
申请日：2017-11-01
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Ryo KUSAKABE , Masayuki SARUWATARI , Noriyuki MAEKAWA
Abstract: Provided is a control device of a fuel injection device which can stabilize a behavior of a valve even when a voltage of a voltage source varies, and can reduce a deviation of an injection amount. The fuel injection device includes a valve and a coil which generates a magnetic attraction force to attract a movable element which drives the valve. A control device applies a predetermined voltage to the coil on the basis of an injection pulse, causes a drive current to flow to the coil until the drive current reaches a maximum current, drives the valve by attracting the movable element, and injects fuel. The drive current flowing to the coil is lowered from the maximum current before the valve reaches a desired maximum lift position, and a constant voltage lower than a predetermined voltage or 0 V is continuously applied to the coil until the valve reaches the desired maximum lift position.
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公开(公告)号：US20190331052A1
公开(公告)日：2019-10-31
申请号：US16505082
申请日：2019-07-08
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Ryo KUSAKABE , Motoyuki ABE , Toshihiro AONO , Takashi OKAMOTO
Abstract: The purpose of the present invention is to detect variations between the quantities of fuel injected into cylinders by fuel injection devices and correct the fuel injection quantity variation while minimizing the computational load on a drive device and the level of performance required of a pressure sensor. A drive device for fuel injection devices according to the present invention performs control wherein movable valves are driven so that predetermined quantities of fuel are injected by applying, for the duration of a set energization time, a current that will reach an energization current to solenoids of a plurality of fuel injection devices which open/close fuel flow paths. The drive device is characterized in that the set energization time or energization current is corrected on the basis of a pressure detection value from a pressure sensor that is attached to a fuel supply pipe disposed upstream of the plurality of fuel injection devices.
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公开(公告)号：US20180023503A1
公开(公告)日：2018-01-25
申请号：US15547973
申请日：2016-01-29
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Shingo KIMURA , Tomoaki HORII , Mitsuru NAGASE , Shirou YAMAOKA , Ryo KUSAKABE , Takaki ITAYA
IPC: F02D41/40
Abstract: Provided is a control device for an internal combustion engine, the control device enabling the suppression of variations in the amount of fuel injected by injection while the boost voltage is charging, without offsetting the injection timing. A boost circuit (211) boosts a first voltage supplied from a battery (201), and supplies a boosted second voltage to a fuel injection device (214). Switches (212, 213) switch the second voltage supplied to the fuel injection device from the booster circuit on and off. Computation devices (204, 207) control the switches. Each computation device comprises: an estimation unit that, before the initial fuel injection in a combustion cycle, estimates the second voltage for all of the fuel injection times in the combustion cycle; and a correction unit that corrects the amount of fuel injected for each fuel injection time depending on the estimated second voltage.
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公开(公告)号：US20180010547A1
公开(公告)日：2018-01-11
申请号：US15545349
申请日：2016-02-26
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Takaki ITAYA , Ryo KUSAKABE , Shirou YAMAOKA , Kiyotaka OGURA
IPC: F02D41/40
CPC classification number: F02D41/402 , F02D41/0255 , F02D41/08 , F02D41/20 , F02D41/3023 , F02D2041/2003 , F02P5/152 , Y02T10/44
Abstract: The purpose of the present invention is to provide a control means which, with respect to injection control of a fuel injection valve, reduces deviation between an injection quantity of fuel injected by the fuel injection valve and a target value, the deviation being caused due to a pressure in a combustion chamber, as an injection timing in a compression stroke of an engine is retarded. The present invention pertains to a fuel injection valve that performs a plurality of injections in one engine cycle, and performs control in such a manner that injection pulse signals and are transmitted to a drive circuit, and from the drive circuit for the fuel injection valve that outputs drive current waveforms for fuel injection, the injection pulse signal in the compression stroke when the injection timing is retarded is shortened.
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