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公开(公告)号：US20170096987A1
公开(公告)日：2017-04-06
申请号：US15272946
申请日：2016-09-22
发明人： Kazuhiro ASAYAMA
CPC分类号： F04B9/06 , F02M37/043 , F02M37/08 , F04B1/02 , F04B11/0075 , F04B17/03 , F04B17/042 , F04B19/22 , F04B53/001 , F04B53/14
摘要： A fuel pump includes a first plunger that reciprocates in a first cylinder. The fuel pump further includes a first mover connected to the first plunger; a second mover that serves as a counterweight for suppressing vibration that occurs due to reciprocating movement of the first mover; an electromagnet and a magnetic member that are provided between the first mover and the second mover; a plate disposed between the first mover and the second mover; and a third spring and a fourth spring being a pair of springs sandwiching the plate between the third spring and the fourth spring, the third spring and the fourth spring having end portions connected to a housing.
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公开(公告)号：US20170096988A1
公开(公告)日：2017-04-06
申请号：US15275917
申请日：2016-09-26
IPC分类号： F04B17/03 , F04B15/00 , F02M59/10 , F04B53/14 , F04B53/16 , F02M59/02 , H02K33/12 , F04B19/22
CPC分类号： F04B17/03 , F02M59/025 , F02M59/10 , F04B15/00 , F04B17/042 , F04B19/22 , F04B53/14 , F04B53/16 , H02K33/06 , H02K33/12 , H02K33/16
摘要： A fuel pump includes a plunger that reciprocates in a cylinder. The fuel pump further includes a first mover connected to the plunger, a second mover serving as a counterweight for the first mover, an electromagnet provided between the first mover and the second mover, a first magnetic member provided between the first mover and the second mover, and a first spring urging the first mover and the second mover away from each other. Further, a second magnetic member is provided between both of the electromagnet and the first magnetic member and a first inclined surface of the first mover, while a third magnetic member is provided between both of the electromagnet and the first magnetic member and a second inclined surface of the second mover.
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公开(公告)号：US20170074202A1
公开(公告)日：2017-03-16
申请号：US15259781
申请日：2016-09-08
发明人： Kazuhiro ASAYAMA
CPC分类号： F02D41/3082 , F02B63/042 , F02D41/065 , F02D41/123 , F02D41/3845 , F02D2250/04 , F02M59/025 , F02M59/10 , F02N11/0814 , H02H1/00 , H02K7/006 , H02K7/108 , H02P7/00
摘要： A fuel supply apparatus for an internal combustion engine includes a motor, a fuel pump, an alternator, a centrifugal clutch, and an electronic control unit. The centrifugal clutch is configured to, when the rotation speed of the output shaft of the motor is higher than or equal to an engaging rotation speed, connect the output shaft of the motor with the rotary shaft of the alternator. The engaging rotation speed is a rotation speed higher than a rotation speed of the rotary shaft at which torque that acts on the rotary shaft as a result of generation of electric power by the alternator becomes maximum and is a rotation speed lower than a rotation speed at which torque for driving the high-pressure fuel pump cannot be provided by only the motor at the time when the motor is driven at rated output power.
摘要翻译： 用于内燃机的燃料供应装置包括马达，燃料泵，交流发电机，离心式离合器和电子控制单元。 离心式离合器构成为，当电动机的输出轴的转速高于或等于接合转速时，将电动机的输出轴与交流发电机的旋转轴连接。 接合旋转速度是高于旋转轴的旋转速度的旋转速度，由于由于交流发电机产生的电力而作用在旋转轴上的转矩变得最大，并且转速低于旋转轴的旋转速度 在以额定输出功率驱动电动机时，仅由电动机不能提供用于驱动高压燃料泵的转矩。
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公开(公告)号：US20160245248A1
公开(公告)日：2016-08-25
申请号：US14874833
申请日：2015-10-05
发明人： Hiroya ANDO , Kazuhiro ASAYAMA , Yoshinori OGAKI
CPC分类号： F02M59/102 , F04B1/0408 , F04B1/0413 , F04B1/0426 , F04B1/0439 , F04B7/0057 , F04B9/042 , F04B53/14
摘要： A fuel pump includes a holed disk-shaped plate and a coil spring to press the plate toward a lifter. The plate has an inner circumferential surface to be engaged with a groove in a projection-side end portion of a plunger. Also, a joint port that connects the inner peripheral surface of the plate to an outer peripheral surface thereof is provided in the plate. The coil spring is located between the plate and a pump body. The plate is assembled in the fuel pump to dispose the joint port at a position in an opposite direction to the direction of a side force to be generated during compression of the coil spring when viewed from a central axis of the coil spring.
摘要翻译： 燃料泵包括孔板形板和螺旋弹簧，以将板压向升降机。 板具有与柱塞的突出侧端部中的槽接合的内周面。 另外，在板上设置有将板的内周面与其外周面连接的接合口。 螺旋弹簧位于板和泵体之间。 板被组装在燃料泵中，以便在从螺旋弹簧的中心轴线观察时将接头端口设置在与螺旋弹簧压缩期间产生的侧向力相反的方向上的位置处。
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公开(公告)号：US20200049117A1
公开(公告)日：2020-02-13
申请号：US16507397
申请日：2019-07-10
发明人： Kazuhiro ASAYAMA
摘要： A high-pressure fuel pump includes a fuel chamber, a pressurizing chamber, a cylinder, a plunger, and a control valve. The control valve includes a valve seat having a valve hole, a valve member, a movable portion having a needle, a valve opening spring, a coil, and a projecting-side stopper. The needle is configured to project from the valve hole and thus separate the valve member from the valve seat. When the control valve is in an open-valve mode, the movable portion contacts the projecting-side stopper and the valve member is separate from the valve seat. The size of the clearance formed between the valve member and the valve seat when the control valve is in the open-valve mode is set such that the clearance functions as a passage restriction for causing pressure loss in the fuel flowing from the pressurizing chamber to the fuel chamber.
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公开(公告)号：US20170298915A1
公开(公告)日：2017-10-19
申请号：US15476070
申请日：2017-03-31
发明人： Kazuhiro ASAYAMA , Satoki TAKAGI
IPC分类号： F04B17/04
CPC分类号： F04B17/042 , H02K21/028
摘要： A plunger electric fuel pump includes a cylinder; a plunger; a pump body; a movable element to which the plunger is connected; a fixed core provided so as to face the movable element; a rotational core including a permanent magnet; an electric motor configured to rotate the rotational core; and a spring configured to urge the movable element in a direction away from the pump body. The rotational core and the fixed core are provided with a switching portion configured to switch between a first state and a second state when a rotational phase of the rotational core is changed, the first state being a state where the magnetic force of the permanent magnet is not applied to the movable element, the second state being a state where the magnetic force of the permanent magnet is applied to the movable element.
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