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公开(公告)号：US10563612B2
公开(公告)日：2020-02-18
申请号：US16098396
申请日：2017-03-22
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Osamu Mukaihara , Satoshi Usui , Masahiro Toyohara
Abstract: Provided is a control device for an internal combustion engine capable of avoiding deterioration of combustion and reliably suppressing synthetic noise of a high pressure fuel pump and a fuel injection valve without affecting an operating state of the internal combustion engine. Therefore, when it is determined that there is synthetic noise of a high pressure fuel pump and a fuel injection valve, an operating angle of a variable valve mechanism provided in the internal combustion engine is made variable while satisfying a fuel injection request of the fuel injection valve.
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公开(公告)号：US10393051B2
公开(公告)日：2019-08-27
申请号：US15023560
申请日：2014-06-13
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Takao Fukuda , Hideyuki Sakamoto , Masahiro Toyohara , Yoshihisa Fujii , Osamu Mukaihara , Mitsuhiko Watanabe , Takeshi Konno
IPC: F02D41/20
Abstract: An internal-combustion-engine fuel injection control device which can accurately control a boosted voltage applied to a fuel injection valve during fuel injection and can control a variation in a fuel injection amount without increasing a size or a cost of the fuel injection control device even when a width of a fuel injection driving pulse to drive the fuel injection valve is small is provided. A fuel injection control device includes a boosting operation control unit configured to start a boosting operation at predetermined timing regardless of an amount of a detected voltage when the detected voltage is higher than a threshold voltage for starting boosting and is lower than a threshold voltage for stopping boosting.
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公开(公告)号：US09926874B2
公开(公告)日：2018-03-27
申请号：US14907908
申请日：2013-07-29
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 closes 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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公开(公告)号：US09714626B2
公开(公告)日：2017-07-25
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
IPC: F02M51/06 , F02D41/20 , F02D41/34 , F02M51/00 , F02M61/10 , F16K31/06 , F02D41/40 , F02D41/30 , F02M63/00
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.
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公开(公告)号：US20150144109A1
公开(公告)日：2015-05-28
申请号：US14409610
申请日：2013-06-05
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Osamu Mukaihara , Masahiro Toyohara
CPC classification number: F02D41/36 , F02D41/20 , F02D41/2467 , F02D2041/2031 , F02D2041/2034 , F02D2041/2058 , F02M51/00
Abstract: A control device for an internal combustion engine is provided which can stabilize behavior when a fuel injection valve is opened, and reduce a variation in the amount of fuel injection of the fuel injection valve. A control device (200) for an internal combustion engine includes high voltage difference detection means (404) for obtaining a difference between a predetermined reference voltage (403) and a real high voltage detected by a high voltage detection means (402), drive current difference storage means (406) for storing in advance the amount of device difference variation of a real drive current detected by drive current detection means (408), and drive control value correction means (409) for correcting at least one of a target value of a drive current to a fuel injection valve (105) and a target value of a drive time, on the basis of at least one result of the high voltage difference detection means and the drive current difference storage means, and corrects a target control value of the fuel injection valve on the basis of at least one detection result of the variation of the detected high voltage and the variation of the current for driving the fuel injection valve.
Abstract translation: 提供一种用于内燃机的控制装置，其能够在燃料喷射阀打开时稳定行为，并且减少燃料喷射阀的燃料喷射量的变化。 用于内燃机的控制装置（200）包括用于获得预定参考电压（403）和由高电压检测装置（402）检测的实际高电压之间的差的高电压差检测装置（404），驱动电流 差分存储装置（406），用于预先存储由驱动电流检测装置（408）检测的实际驱动电流的装置差异变化量;以及驱动控制值校正装置（409），用于校正至少一个目标值 基于高电压差检测装置和驱动电流差存储装置的至少一个结果，到燃料喷射阀（105）的驱动电流和驱动时间的目标值，并且校正目标控制值 基于检测到的高电压的变化的检测结果和用于驱动燃料喷射阀的电流的变化的至少一个检测结果，燃料喷射阀。
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Patent Agency Ranking
公开(公告)号：US10662886B2
公开(公告)日：2020-05-26
申请号：US16070177
申请日：2016-12-22
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Akiyasu Miyamoto , Masahiro Toyohara , Osamu Mukaihara , Yoshihito Yasukawa
Abstract: A control device of a fuel injection device improves stabilization in an opening operation of a valve element and stabilizes an injection amount. The control device includes a valve element to open a fuel passage by being separated from a valve seat, a movable iron core to perform an opening/closing operation of the valve element, and a fixed iron core to attract the movable iron core when a current flows to a coil. The control device includes a control unit which performs an intermediate energization in which the coil is energized again to attract the movable iron core to the fixed iron core and then the energizing to the coil is blocked and the movable iron core is displaced in a direction away from the fixed core. The control unit controls whether the intermediate energization is performed according to an injection interval of the fuel injection device.
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公开(公告)号：US10352264B2
公开(公告)日：2019-07-16
申请号：US15740670
申请日：2016-06-29
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Osamu Mukaihara , Masahiro Toyohara
IPC: F02D41/06 , F02M51/00 , F02D45/00 , F02M65/00 , F02D41/20 , F02D41/24 , F02D41/34 , F02M51/06 , F02D41/40
Abstract: Since a factor affecting an individual difference learning result is reduced or eliminated regardless of a valve body behavior, it is possible to highly accurately detect an individual difference of a fuel injector caused by the valve body behavior and to reliably detect the individual difference even when the fuel injector is replaced. When a valve opening/closing timing of the fuel injector is learned by a learning unit, a unit of interrupting the learning if a predetermined condition is established, a unit of prohibiting the learning of the valve closing timing using the learning unit if a predetermined condition is established, or a unit of prohibiting the learning of the valve opening/closing timing of the fuel injector using the learning unit if a fuel pressure of a common rail supplying a fuel to the plurality of fuel injectors changes by a predetermined value or more within a predetermined time is provided.
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8.发明授权公开(公告)号：US09422884B2
公开(公告)日：2016-08-23
申请号：US14367029
申请日：2012-12-05
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Yoshihisa Fujii , Takao Fukuda , Masahiro Toyohara
CPC classification number: F02D41/20 , F02D35/023 , F02D35/024 , F02D41/008 , F02D41/247 , F02D41/401 , F02D41/402 , F02D2041/2055 , F02D2200/0602 , F02D2200/0618 , Y02T10/44
Abstract: The internal combustion engine control system includes an injector to supply fuel to an internal combustion engine, control section for calculating power distribution time for the injector, a sensor to detect a valve opening of the injector, and control section calculating and storing valve opening delay time, which is a difference between a power distribution start time and a valve opening detection time.When a power distribution time determination section determines that the power distribution time for the injector is not less than a predetermined value, the valve opening delay time is calculated and stored. When the power distribution time for the injector is less than the predetermined value, the power distribution time for the injector is controlled based on the valve opening delay time stored in storing means to perform control to increase the injector power distribution time.
Abstract translation: 内燃机控制系统包括：向内燃机供给燃料的喷射器，用于计算喷射器的配电时间的控制部，检测喷射器的开度的传感器，以及控制部，计算并存储阀开启延迟时间 ，其是配电开始时间和开阀检测时间之间的差。 当电力分配时间确定部分确定喷射器的动力分配时间不小于预定值时，计算并存储开阀延迟时间。 当喷射器的动力分配时间小于预定值时，基于存储在存储装置中的开阀延迟时间来控制喷射器的动力分配时间，以进行控制以增加喷射器动力分配时间。
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公开(公告)号：US10895217B2
公开(公告)日：2021-01-19
申请号：US16070863
申请日：2017-01-19
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Osamu Mukaihara , Masahiro Toyohara , Shigeyuki Yufu
Abstract: Provided is a control apparatus for an internal combustion engine which can achieve required torque and avoid the risk of an accidental fire even in the case where an error occurs in final injection termination timing. A microcomputer calculates T902 which has been further advanced from T106 which precedes ignition timing by time required for vaporization of fuel injected into a cylinder of an internal combustion engine. The microcomputer determines whether final injection termination timing (T903) comes after T106 or T902. When it has been determined that final injection termination timing (T1204) comes after T106 or T902, the microcomputer controls an injector or an ignition device so as to secure time for vaporization of the fuel injected into the cylinder of the internal combustion engine while satisfying a fuel injection amount required in one combustion cycle.
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公开(公告)号：US09903305B2
公开(公告)日：2018-02-27
申请号：US14409610
申请日：2013-06-05
Applicant: Hitachi Automotive Systems, Ltd.
Inventor： Osamu Mukaihara , Masahiro Toyohara
CPC classification number: F02D41/36 , F02D41/20 , F02D41/2467 , F02D2041/2031 , F02D2041/2034 , F02D2041/2058 , F02M51/00
Abstract: A control device for an internal combustion engine is provided which can stabilize behavior when a fuel injection valve is opened, and reduce a variation in the amount of fuel injection of the fuel injection valve. A control device (200) for an internal combustion engine includes high voltage difference detection means (404) for obtaining a difference between a predetermined reference voltage (403) and a real high voltage detected by a high voltage detection means (402), drive current difference storage means (406) for storing in advance the amount of device difference variation of a real drive current detected by drive current detection means (408), and drive control value correction means (409) for correcting at least one of a target value of a drive current to a fuel injection valve (105) and a target value of a drive time, on the basis of at least one result of the high voltage difference detection means and the drive current difference storage means, and corrects a target control value of the fuel injection valve on the basis of at least one detection result of the variation of the detected high voltage and the variation of the current for driving the fuel injection valve.
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