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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：US20150377176A1
公开(公告)日：2015-12-31
申请号：US14766253
申请日：2014-01-24
发明人： 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分类号： F02D41/401 , F02D41/20 , F02D41/3011 , F02D2041/2006 , F02D2041/2055 , F02D2041/2058 , F02M51/061 , F02M63/0017
摘要： 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.
摘要翻译： 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：US20180209366A1
公开(公告)日：2018-07-26
申请号：US15891909
申请日：2018-02-08
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 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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公开(公告)号：US20210285395A1
公开(公告)日：2021-09-16
申请号：US16626643
申请日：2018-07-05
摘要： Provided is a novel internal-combustion engine control device that can accurately determine a combustion state of an air-fuel mixture in a combustion chamber even in a case where operation is switched between a steady operation state and a transient operation state. For this purpose, the internal-combustion engine control device includes a physical quantity detection unit that detects a physical quantity that fluctuates output of the internal-combustion engine, an output fluctuation value calculation unit that calculates an output fluctuation value for each cylinder based on a detection result of the physical quantity detection unit, and a state determination unit that determines a transient operation state or a steady operation state based on a difference or a ratio between a first output fluctuation value of a predetermined first cylinder and a second output fluctuation value of a predetermined second cylinder calculated by the output fluctuation value calculation unit. Since combustion failure determination is performed in a section determined as the steady state, it is possible to accurately determine a combustion failure state of an air-fuel mixture of a cylinder even in a case where operation is switched between the steady operation state and the transient operation state.
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5.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
发明人： Toshihiro AONO , Motoyuki ABE , Ryo KUSAKABE , Teppei HIROTSU , Ayumu HATANAKA , Hideyuki SAKAMOTO , Takao FUKUDA , Masahiro TOYOHARA , Osamu MUKAIHARA
CPC分类号： F02D41/2467 , F02D41/20 , F02D2041/1432 , F02D2041/2051 , F02D2041/2055 , F02D2041/2058 , F02M51/061 , F02M51/0671
摘要： 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：US20170335787A1
公开(公告)日：2017-11-23
申请号：US15534084
申请日：2015-12-07
CPC分类号： F02D41/2467 , F02D41/20 , F02D2041/2003 , F02D2041/2024 , F02D2041/2055 , F02M51/0671 , F02M51/0685
摘要： 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：US20210079857A1
公开(公告)日：2021-03-18
申请号：US16954261
申请日：2019-02-05
摘要： To accurately evaluate combustion stability in consideration of the effect of the trend even at the time of the transient operation. The present invention is configured to have a combustion energy calculation unit that calculates a combustion energy W_t of one combustion cycle in an internal combustion engine, a trend calculation unit that calculates a trend Tr of change in the combustion energy W_t calculated by the combustion energy calculation unit in a plurality of the combustion cycles, and a combustion stability judgment unit that judges combustion stability based on the combustion energy W_t in the plurality of combustion cycles and the trend Tr of change calculated by the trend calculation unit.
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公开(公告)号：US20200300184A1
公开(公告)日：2020-09-24
申请号：US16607269
申请日：2018-01-31
摘要： Provided is a control device for an internal combustion engine capable of estimating a compression ratio of the internal combustion engine at the time of fuel cut of the internal combustion engine and without being affected by an intake air amount and an intake air temperature. A compression ratio ϵ is calculated on the basis of a change of in-cylinder pressure P with respect to crank angle θ at timing when an in-cylinder volume change rate dV/dθ/V takes an extreme value or at timing from closing of an intake valve 109 to the start of ignition of the air-fuel mixture in the cylinder.
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9.发明申请公开(公告)号：US20200291914A1
公开(公告)日：2020-09-17
申请号：US16765727
申请日：2018-12-11
摘要： Provided is a control device and a control method of a high-efficiency internal combustion engine capable of stabilizing combustion and suppressing NOx emissions without unnecessarily increasing a mounting load on an ECU. Therefore, the control device of the internal combustion engine for controlling the internal combustion engine includes an ignition plug that ignites an air-fuel mixture of fuel and air in the combustion chamber, a combustion pressure estimation sensor that detects a combustion pressure in the combustion chamber, and a crank angle sensor that detects a crank angle of a crankshaft. An MBT region is set based on an ignition delay period from an ignition timing of the ignition plug calculated from a detection value of the combustion pressure estimation sensor and a detection value of the crank angle sensor to a combustion start timing in the combustion chamber, and a combustion period from the combustion start timing to a set amount combustion end timing when a set amount of combustion ends. An ignition timing of the ignition plug is controlled so as to fall within the set MBT region.
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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
发明人： Ryo KUSAKABE , Motoyuki ABE , Toshihiro AONO , Takashi OKAMOTO
摘要： 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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