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公开(公告)号：US20210164414A1
公开(公告)日：2021-06-03
申请号：US15734429
申请日：2019-07-04
发明人： Kotaro OKI , Osamu MUKAIHARA , Fumihiro ITABA , Akira IIZUKA
摘要： Provided is a technique for identifying a variation in an injection amount by estimating a valve opening start timing in an extremely small injection region of a half lift region. Therefore, a fuel injection control device according to the present invention estimates a valve opening start timing of a fuel injection valve by referring to a characteristic of a reference fuel injection valve acquired in advance.
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公开(公告)号：US20190153974A1
公开(公告)日：2019-05-23
申请号：US16098396
申请日：2017-03-22
发明人： Osamu MUKAIHARA , Satoshi USUI , Masahiro TOYOHARA
CPC分类号： F02D41/401 , F01L1/356 , F01L13/00 , F02D13/02 , F02D13/0207 , F02D2200/025 , F02M59/44 , F02M63/00 , Y02T10/18
摘要： 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：US20180209365A1
公开(公告)日：2018-07-26
申请号：US15746660
申请日：2016-07-20
CPC分类号： F02D41/20 , F02D41/2467 , F02D2041/2003 , F02D2041/2051 , F02D2041/2055 , F02M51/00 , F02M51/06 , F02M51/061 , F16K31/06 , F16K31/0675
摘要： A set spring force is estimated with high precision and a drive waveform is corrected according to the results. A control device of a fuel injection device consists of an incorporation means of reading a drive voltage of a solenoid, an inflexion point extraction filter for filtering the drive voltage to highlight inflexion points, a means of selecting a later inflexion point or a means of calculating a temporal difference between a later inflexion point and an earlier inflexion point of the extracted inflexion points, and a drive current correction means of correcting a drive current parameter on the basis of timing of the selected, later inflexion point or a temporal difference between the inflexion points.
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公开(公告)号：US20160208725A1
公开(公告)日：2016-07-21
申请号：US15023560
申请日：2014-06-13
发明人： Takao FUKUDA , Hideyuki SAKAMOTO , Masahiro TOYOHARA , Yoshihisa FUJII , Osamu MUKAIHARA , Mitsuhiko WATANABE , Takeshi KONNO
IPC分类号： F02D41/20
CPC分类号： F02D41/20 , F02D2041/2013 , F02D2041/2048 , F02D2041/2051 , F02D2041/2058
摘要： 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.
摘要翻译： 一种能够精确地控制在燃料喷射期间施加到燃料喷射阀的升压电压的内燃机燃料喷射控制装置，并且能够在不增加燃料喷射控制装置的尺寸或成本的同时控制燃料喷射量的变化，甚至 当提供驱动燃料喷射阀的燃料喷射驱动脉冲的宽度小时。 一种燃料喷射控制装置，包括：升压运转控制单元，被配置为，当检测电压高于用于启动升压的阈值电压时，与预定电压的量无关地在预定定时开始升压运行，并且低于用于停止的阈值电压 提升。
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公开(公告)号：US20190024601A1
公开(公告)日：2019-01-24
申请号：US16070177
申请日：2016-12-22
CPC分类号： F02D41/20 , F02D41/3005 , F02D41/402 , F02D2041/2037 , F02D2041/2044 , F02D2041/2051 , F02M51/0685 , F02M2200/50
摘要： 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：US20160237937A1
公开(公告)日：2016-08-18
申请号：US15024667
申请日：2014-06-16
发明人： Ryo KUSAKABE , Toshihiro AONO , Motoyuki ABE , Takuya MAYUZUMI , Masahiro TOYOHARA , Takashi OKAMOTO , Osamu MUKAIHARA , Shinji NAKAGAWA , Yusuke KIHARA
CPC分类号： F02D41/247 , F02D41/20 , F02D41/402 , F02D2041/2003 , F02D2041/2055 , F02D2041/2058 , F02D2200/0618 , F02M51/0671 , F02M51/0678 , F02M51/0685 , F02M61/1833 , F02M61/1893 , Y02T10/44
摘要： An object of the invention is to provide a drive device of a fuel injection device which can increase the accuracy in an injected fuel injection amount by combining the fuel injections from a plurality of injection pulse widths. In the drive device of the fuel injection device which has a function of driving the fuel injection device such that the fuel injection is performed plural times in one combustion cycle, the fuel injection device is driven such that a fuel injection at a target opening level in which a valve element or a movable element of the fuel injection device reaches a regulation member and a fuel injection at an intermediate opening level in which the valve element does not reach the regulation member are included in the plural times of division injections performed in one combustion cycle.
摘要翻译： 本发明的目的是提供一种燃料喷射装置的驱动装置，其可以通过组合来自多个喷射脉冲宽度的燃料喷射来提高喷射燃料喷射量的精度。 在具有驱动燃料喷射装置的功能的燃料喷射装置的驱动装置中，使得在一个燃烧循环中进行多次燃料喷射，燃料喷射装置被驱动，使得在目标开度 燃料喷射装置的阀元件或可动元件到达调节构件，并且在阀元件未到达调节构件的中间开度处的燃料喷射包括在一次燃烧中进行的多次分区喷射 周期。
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公开(公告)号：US20160177855A1
公开(公告)日：2016-06-23
申请号：US14907908
申请日：2013-07-29
发明人： Ryo KUSAKABE , Motoyuki ABE , Ayumu HATANAKA , Toshihiro AONO , Teppei HIROTSU , Hideyuki SAKAMOTO , Masahiro TOYOHARA , Osamu MUKAIHARA , Takao FUKUDA , Yoshihito YASUKAWA , Akiyasu MIYAMOTO
CPC分类号： F02D41/20 , F02D41/0085 , F02D2041/2003 , F02D2041/2037 , F02D2041/2055 , F02D2041/2058 , F02D2200/063 , F02M51/0685 , F02M61/1833 , F02M65/005
摘要： 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.
摘要翻译： 一种驱动装置，能够检测每个气缸的燃料喷射装置的喷射量的各个变化，并且调节提供给喷射脉冲宽度的电流波形和螺线管，使得燃料喷射装置的各个变化减小。 本发明的燃料喷射装置包括阀体，该阀体通过与阀座接触而关闭燃料通路，并且通过与阀座分离而打开燃料通道，以及由螺线管，固定铁芯， 喷嘴保持器，壳体和针，并且当向螺线管供应电流时，磁吸力作用在针上，并且针具有通过在执行自由运行操作之后与阀体碰撞来打开阀体的功能 并且通过流过螺线管的电流来检测针头与阀体的碰撞引起的针的加速度的变化。
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8.发明申请公开(公告)号：US20160076498A1
公开(公告)日：2016-03-17
申请号：US14784653
申请日：2014-03-07
发明人： Toshihiro AONO , Motoyuki ABE , Ryo KUSAKABE , Teppei HIROTSU , Ayumu HATANAKA , Hideyuki SAKAMOTO , Takao FUKUDA , Masahiro TOYOHARA , Osamu MUKAIHARA
IPC分类号： F02M51/06
CPC分类号： F02M51/061 , F02D41/20 , F02D41/2467 , F02D2041/1432 , F02D2041/2051 , F02D2041/2055 , F02D2041/2058 , F02M51/0671
摘要： Provided are an electromagnetic valve control unit and a fuel injection control device using the same that can precisely detect a change of an operating state of an electromagnetic valve, that is, a valve opening time or a valve closing time of the electromagnetic valve, precisely correct a drive voltage or a drive current applied to the electromagnetic valve, and appropriately control opening/closing of the electromagnetic valve, with a simple configuration. In an electromagnetic valve control unit for controlling opening/closing of an electromagnetic valve by a drive voltage and a drive current to be applied, the drive voltage and the drive current applied to the electromagnetic valve are corrected on the basis of a detection time of an inflection point from time series data of the drive voltage and the drive current when the electromagnetic valve is opened/closed.
摘要翻译： 提供一种电磁阀控制单元和使用该电磁阀控制单元的燃料喷射控制装置，其能够精确地检测电磁阀的操作状态的变化，即电磁阀的打开时间或阀关闭时间，精确地正确 施加到电磁阀的驱动电压或驱动电流，并且以简单的结构适当地控制电磁阀的打开/关闭。 在用于通过驱动电压和施加的驱动电流来控制电磁阀的打开/关闭的电磁阀控制单元中，基于检测时间来校正施加到电磁阀的驱动电压和驱动电流 来自驱动电压的时间序列数据和电磁阀打开/关闭时的驱动电流的拐点。
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公开(公告)号：US20210239063A1
公开(公告)日：2021-08-05
申请号：US17049097
申请日：2019-02-13
发明人： Kotaro OKI , Osamu MUKAIHARA
摘要： The present invention provides a fuel injection control apparatus that can suppress variations in fuel injection amounts in a very small fuel injection region. For this purpose, the fuel injection control apparatus includes a fixed injection pulse generator 10 and a drive current interruption unit 31. The fixed injection pulse generator 10 generates a fixed injection pulse having a valve opening timing at which a drive current is supplied to an electromagnetic coil 19 in an electromagnetic fuel injection valve 18 and a first valve closing timing at which the drive current to the electromagnetic coil 19 is interrupted. Within a period in which the fixed injection pulse is generated, the drive current interruption unit 31 determines an electric energy amount of a drive current supplied to the electromagnetic coil in response to a valve opening timing of the fixed injection pulse. When this electric energy amount reaches a preset, predetermined target electrical energy amount, the drive current interruption unit generates a second valve closing timing of the fixed injection pulse different from the first valve closing timing and then interrupts the drive current supplied to the electromagnetic coil before the first valve closing timing.
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公开(公告)号：US20210123393A1
公开(公告)日：2021-04-29
申请号：US17051883
申请日：2019-02-14
发明人： Fumihiro ITABA , Osamu MUKAIHARA
摘要： Provided is a fuel injection control device capable of detecting individual differences in fuel injection valves and appropriately collecting information on the individual differences. For this reason, the fuel injection control device includes a fuel injection valve drive circuit that supplies a current or a voltage to a coil of a fuel injection valve to drive the fuel injection valve, a valve body operation time period detection unit that detects a valve body operation time period related to an operation of a valve body of the fuel injection valve, and a state determination unit that determines that at least one of the fuel injection valve, the valve body operation time period detection unit, and the fuel injection valve drive circuit is abnormal based on information related to a valve body operation time period detected by the valve body operation time period detection unit.
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