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公开(公告)号：US20200240340A1
公开(公告)日：2020-07-30
申请号：US15761418
申请日：2016-08-08
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Hisayuki ORITA , Masayuki SARUWATARI , Kazuhiro ORYOJI , Motoyuki ABE
Abstract: An object of the present invention is to provide an engine system control device capable of stabilizing a combustion state, while improving fuel economy by performing intake air heating. According to the present invention, there is provided an engine system control device which controls an engine system including an engine configured to combust air-fuel mixture, an intake air path configured to take air to the engine, and an intake air heating mechanism configured to heat the intake air, wherein a heating amount of the intake air is controlled depending on a combustion speed of the air-fuel mixture.
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公开(公告)号：US20190218987A1
公开(公告)日：2019-07-18
申请号：US16366168
申请日：2019-03-27
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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公开(公告)号：US20180209366A1
公开(公告)日：2018-07-26
申请号：US15891909
申请日：2018-02-08
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Ryo KUSAKABE , Motoyuki ABE , Ayumu HATANAKA , Toshihiro AONO , Teppei HIROTSU , Hideyuki SAKAMOTO , Masahiro TOYOHARA , Osamu MUKAIHARA , Takao FUKUDA , Yoshihito YASUKAWA , Akiyasu MIYAMOTO
CPC classification number: F02D41/20 , F02D41/0085 , F02D2041/2003 , F02D2041/2037 , F02D2041/2055 , F02D2041/2058 , F02D2200/063 , F02M51/0685 , F02M61/1833 , F02M65/005
Abstract: A drive device capable of detecting individual variations of an injection quantity of a fuel injection device of each cylinder and adjusting a current waveform provided to an injection pulse width and a solenoid such that the individual variations of the fuel injection devices are reduced. The fuel injection device in the present invention includes a valve body that close a fuel passage by coming into contact with a valve seat and opens the fuel passage by separating from the valve seat and a magnetic circuit constructed of a solenoid, a fixed core, a nozzle holder a housing and a needle and when a current is supplied to the solenoid a magnetic suction force acts on the needle and the needle has a function to open the valve body by colliding against the valve body after performing a free running operation and changes of acceleration of the needle due to collision of the needle against the valve body are detected by a current flowing through the solenoid.
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4.发明申请公开(公告)号：US20190218990A1
公开(公告)日：2019-07-18
申请号：US16267125
申请日：2019-02-04
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Toshihiro AONO , Motoyuki ABE , Ryo KUSAKABE , Teppei HIROTSU , Ayumu HATANAKA , Hideyuki SAKAMOTO , Takao FUKUDA , Masahiro TOYOHARA , Osamu MUKAIHARA
CPC classification number: F02D41/2467 , F02D41/20 , F02D2041/1432 , F02D2041/2051 , F02D2041/2055 , F02D2041/2058 , F02M51/061 , F02M51/0671
Abstract: An electromagnetic valve control unit for detecting operation of an electromagnetic valve on the basis of a drive voltage or a drive current applied to the electromagnetic valve. The electromagnetic valve control unit includes an A/D converter, a filter, and a detection unit. The A/D converter converts the drive voltage or the drive current into a digital signal. The filter has a gain of about zero at a predetermined frequency. The detection unit detects operation of the electromagnetic valve on the basis of an output of the filter upon input of the digital signal into the filter.
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公开(公告)号：US20180363615A1
公开(公告)日：2018-12-20
申请号：US16012275
申请日：2018-06-19
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Yoshihito YASUKAWA , Kiyotaka OGURA , Takao MIYAKE , Eiji ISHII , Motoyuki ABE , Tohru ISHIKAWA
Abstract: A spark-ignition direct fuel injection valve includes, at least, a seat member provided with a fuel injection hole and a valve seat and a valve body which controls fuel injection from the injection hole by contacting and separating from the valve seat. In the spark-ignition direct fuel injection valve: the injection hole has an injection hole inlet which is open inwardly of the seat member and an injection hole outlet which is open outwardly of the seat member; an opening edge of the injection hole inlet has a first round-chamfered portion formed on an upstream side with respect to a fuel flow toward the injection hole inlet; and an extending length (L) of the injection hole does not exceed three times a hole diameter (D) of the injection hole.
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Patent Agency Ranking
公开(公告)号：US20180363608A1
公开(公告)日：2018-12-20
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：US20170335787A1
公开(公告)日：2017-11-23
申请号：US15534084
申请日：2015-12-07
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Toshihiro AONO , Motoyuki ABE , Masahiro TOYOHARA , Osamu MUKAIHARA
CPC classification number: F02D41/2467 , F02D41/20 , F02D2041/2003 , F02D2041/2024 , F02D2041/2055 , F02M51/0671 , F02M51/0685
Abstract: The purpose of the present invention is to provide a fuel injection valve control device with which. variability in the injection amount with respect to drive pulse width can be kept to a satisfactory level in each of a plurality of fuel injection devices. The present invention provides a fuel injection valve control device for controlling a plurality of fuel injection devices each equipped with a valve body and a solenoid for opening the valve body, characterized in that the device is configured such that, a prescribed time after voltage has been applied to the solenoid, a holding current is applied, the prescribed time and the holding current being corrected for each of the fuel injection devices, on the basis of the operating characteristics of the fuel injection device.
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公开(公告)号：US20170082078A1
公开(公告)日：2017-03-23
申请号：US15364846
申请日：2016-11-30
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：US20190063387A1
公开(公告)日：2019-02-28
申请号：US16169598
申请日：2018-10-24
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Yoshihito YASUKAWA , Hideharu EHARA , Tohru ISHIKAWA , Motoyuki ABE , Ryo KUSAKABE
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：US20170241391A1
公开(公告)日：2017-08-24
申请号：US15591218
申请日：2017-05-10
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Yoshihito YASUKAWA , Kiyotaka OGURA , Takao MIYAKE , Eiji ISHII , Motoyuki ABE , Tohru ISHIKAWA
CPC classification number: F02M61/1813 , F02M51/0671 , F02M51/0675 , F02M61/1833 , F02M67/12
Abstract: A spark-ignition direct fuel injection valve includes, at least, a seat member provided with a fuel injection hole and a valve seat and a valve body which controls fuel injection from the injection hole by contacting and separating from the valve seat. In the spark-ignition direct fuel injection valve: the injection hole has an injection hole inlet which is open inwardly of the seat member and an injection hole outlet which is open outwardly of the seat member; an opening edge of the injection hole inlet has a first round-chamfered portion formed on an upstream side with respect to a fuel flow toward the injection hole inlet; and an extending length (L) of the injection hole does not exceed three times a hole diameter (D) of the injection hole.
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