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

IPC: F02D41/40 ,  F02M63/00 ,  F02D41/30 ,  F02M51/06

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。

公开(公告)号：US20160071642A1

公开(公告)日：2016-03-10

申请号：US14785528

申请日：2013-04-25

Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

Inventor： Kiyoshi AIKI ,  Ayumu HATANAKA ,  Takuya MAYUZUMI ,  Katsuya OYAMA ,  Ryosuke ISHIDA ,  Yasushi SUGIYAMA

IPC: H01F7/20

CPC classification number: H01F7/204 ,  F02D41/20 ,  F02D2041/001 ,  F02D2041/2041 ,  H02M1/44 ,  H02M3/155 ,  H02M2003/1555 ,  H03K17/162

Abstract: The present invention is to provide a magnet coil drive control device that can efficiently suppress conduction noise while reducing the capacitance of a capacitor. A capacitor and an impedance element are arranged in series on the connecting line connecting the positive electrode line and the negative electrode line of a DC power supply, the connecting line between the capacitor and the impedance element is connected to one end of a magnet coil via a freewheeling diode, and the portion between the freewheeling diode and the one end of the magnet coil is connected to the positive electrode line or the negative electrode line by a switching element. Conduction noise caused by the driving current of the magnet coil can be suppressed by the impedance element, and the capacitance of the capacitor can be further reduced. Accordingly, the magnet coil drive control device can be made smaller in size.

Abstract translation: 本发明提供一种能够有效地抑制导通噪声同时降低电容器的电容的磁体线圈驱动控制装置。 电容器和阻抗元件串联在连接直流电源的正极线和负极线的连接线上，电容器和阻抗元件之间的连接线连接到电磁线圈通孔的一端 续流二极管，续流二极管和电磁线圈的一端之间的部分通过开关元件连接到正极线或负极线。 可以通过阻抗元件来抑制由电磁线圈的驱动电流引起的导通噪声，并且可以进一步降低电容器的电容。 因此，可以使电磁线圈驱动控制装置的尺寸更小。