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1. 发明公开

EP3441607A1 HIGH-PRESSURE FUEL SUPPLY PUMP HAVING ELECTROMAGNETICALLY-DRIVEN INTAKE VALVE 有权转让
公开(公告)号：EP3441607A1
公开(公告)日：2019-02-13
申请号：EP18188512.0
申请日：2011-10-14
申请人： Hitachi Automotive Systems, Ltd.
发明人： USUI, Satoshi , TOKUO, Kenichiro , KAWANO, Tatsuo , HAYATANI, Masahiko , TAMURA, Shingo , YAMADA, Hiroyuki , MIYAZAKI, Katsumi
IPC分类号： F02M63/00 , F02M59/36 , F04B49/24
摘要： A high-pressure fuel supply pump, comprising:
a piston plunger (2) reciprocating within a pressurizing chamber (12); and
an electromagnetically-driven intake valve mechanism (200) provided at an inlet of the pressurizing chamber (12),
wherein the electromagnetically-driven intake valve mechanism (200) includes an anchor (207) which pulls a plunger rod (201), a fixed core (206) which attracts the anchor (207), and a yoke (205) in which inner peripheral part the fixed core (206) is fixed;
wherein the fixed core (206) is rigidly fixed to a bottom part of the yoke (205) by press-fitting,
wherein a through hole (206H) is formed at a bottom part of the fixed core (206) and
wherein the fixed core (206) is press-fitted in an inner peripheral surface of a cylindrical space (205H) of the yoke (205) .

2. 发明公开

EP3467297A1 HIGH-PRESSURE FUEL FEEDING PUMP 有权转让
公开(公告)号：EP3467297A1
公开(公告)日：2019-04-10
申请号：EP17802461.8
申请日：2017-04-11
申请人： Hitachi Automotive Systems, Ltd.
发明人： USUI, Satoshi , SAITO, Atsuji , SUGANAMI, Masayuki , TOKUO, Kenichiro , HASHIDA, Minoru , HAYATANI, Masahiko , YAMADA, Hiroyuki , YAGAI, Masamichi
IPC分类号： F02M59/34 , F02M59/20
摘要： Provided is a high-pressure fuel supply pump capable of arranging a relief valve mechanism inside a pump body while suppressing an increase in size and an increase in manufacturing cost. Therefore, a high-pressure fuel supply pump of the present invention includes: a plunger that changes a volume of a pressurizing chamber by reciprocating an inside of a cylinder; a first hole formed from an outer circumferential surface of a pump body toward an inner circumferential side; a relief valve mechanism arranged in the first hole; and a second hole that returns fuel in a flow path on a discharge side of a discharge valve pressurized in the pressurizing chamber to a damper chamber or a plunger seal chamber communicating with the damper chamber when the relief valve mechanism opens in communication with the first hole. At least a part of the relief valve mechanism arranged in the first hole is arranged on the pressurizing chamber side with respect to the uppermost end portion on the pressurizing chamber side of the cylinder.

3. 发明授权

EP3228859B1 HIGH-PRESSURE FUEL SUPPLY PUMP HAVING ELECTROMAGNETICALLY-DRIVEN INTAKE VALVE 有权转让
公开(公告)号：EP3228859B1
公开(公告)日：2019-08-28
申请号：EP17168029.1
申请日：2011-10-14
申请人： Hitachi Automotive Systems, Ltd.
发明人： USUI, Satoshi , TOKUO, Kenichiro , KAWANO, Tatsuo , HAYATANI, Masahiko , TAMURA, Shingo , YAMADA, Hiroyuki , MIYAZAKI, Katsumi
IPC分类号： F02M59/36

4. 发明授权

EP2325473B1 FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINE 有权转让
标题翻译：喷油器用于内燃机
公开(公告)号：EP2325473B1
公开(公告)日：2015-09-09
申请号：EP09814203.7
申请日：2009-07-29
申请人： Hitachi Automotive Systems, Ltd.
发明人： ABE, Motoyuki , HAYATANI, Masahiko , ISHIKAWA, Tohru , KOWATARI, Takehiko , TAKAOKU, Atsushi , NAMAIZAWA, Yasuo , IRINO, Yusuke
IPC分类号： F02M51/06
CPC分类号： F02M51/0653 , F02M2200/02 , F02M2200/90 , F02M2200/9061

5. 发明公开

EP2325473A1 FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINE 有权转让
标题翻译：内燃机燃油喷射阀
公开(公告)号：EP2325473A1
公开(公告)日：2011-05-25
申请号：EP09814203.7
申请日：2009-07-29
申请人： Hitachi Automotive Systems, Ltd.
发明人： ABE, Motoyuki , HAYATANI, Masahiko , ISHIKAWA, Tohru , KOWATARI, Takehiko , TAKAOKU, Atsushi , NAMAIZAWA, Yasuo , IRINO, Yusuke
IPC分类号： F02M51/06
CPC分类号： F02M51/0653 , F02M2200/02 , F02M2200/90 , F02M2200/9061
摘要： In a fuel injection valve, it is intended to enhance valve-closing responsivity while maintaining durability (anti wear property) of a collision portion between a stationary core and a movable core and valve-opening responsivity.
An annular end face 106A of the movable core 106 in the fuel injection valve is provided with a collision portion 106C that collides to a stationary core 107 when the movable core is magnetically attracted toward the stationary core side and a non-collision portion that keeps a fluid gap between both cores at an area of an outer side or an inner side from the collision portion. The annular end faces of the stationary core and the movable core are coated with platings 30, 31 having anti wear property, and at least one of the platings of the stationary core and the movable core is formed in such a manner that the thickness thereof at the collision portion 106C is to be thicker and the thickness thereof at the non-collision portion is to be thinner.
摘要翻译：在燃料喷射阀中，旨在提高阀关闭响应性，同时保持固定芯和活动芯之间的碰撞部分的耐久性（抗磨损性）和阀开启响应性。燃料喷射阀中的可动芯106的环形端面106A设置有碰撞部分106C，该碰撞部分106C当可动芯被磁性地吸向静止芯侧时与固定芯107碰撞;以及非碰撞部分，在两个芯部之间的在碰撞部分的外侧或内侧区域处的流体间隙。固定芯和活动芯的环形端面涂覆有具有抗磨损性的镀层30,31，并且固定芯和活动芯的至少一个镀层形成为使得其厚度在碰撞部分106C将变厚并且在非碰撞部分处的厚度变薄。

6. 发明授权

EP3441607B1 HIGH-PRESSURE FUEL SUPPLY PUMP HAVING ELECTROMAGNETICALLY-DRIVEN INTAKE VALVE 有权转让
公开(公告)号：EP3441607B1
公开(公告)日：2020-03-18
申请号：EP18188512.0
申请日：2011-10-14
申请人： Hitachi Automotive Systems, Ltd.
发明人： USUI, Satoshi , TOKUO, Kenichiro , KAWANO, Tatsuo , HAYATANI, Masahiko , TAMURA, Shingo , YAMADA, Hiroyuki , MIYAZAKI, Katsumi
IPC分类号： F02M63/00 , F02M59/36 , F04B49/24

7. 发明公开

EP3608534A1 HIGH-PRESSURE FUEL PUMP 有权转让
公开(公告)号：EP3608534A1
公开(公告)日：2020-02-12
申请号：EP18781834.9
申请日：2018-03-26
申请人： Hitachi Automotive Systems, Ltd.
发明人： TOKUMARU, Kazuaki , HAYATANI, Masahiko , USUI, Satoshi , SAITO, Atsuji , TOKUO, Kenichiro , YAGAI, Masamichi , SUGANAMI, Masayuki
IPC分类号： F02M59/44 , F02M59/36
摘要： Provided is a high-pressure fuel pump which can fix a cylinder to a pump body using a simple structure, and can reduce a displacement amount inward in a radial direction of the cylinder. A high-pressure fuel pump includes a pump body which is formed with a pressing chamber and a cylinder which is inserted in a hole formed in the pump body. The cylinder is swaged to the hole by pressing a convex portion on an outside in a radial direction to fit into the hole on an opposite side to the pressing chamber, by screwing a formed screw thread into the hole, or by being swaged with the opposite side to the pressing chamber. The cylinder is formed with a clearance in the radial direction with respect to the hole of the pump body all over a region from a bonding portion to an upper end.

8. 发明公开

EP3228859A1 HIGH-PRESSURE FUEL SUPPLY PUMP HAVING ELECTROMAGNETICALLY-DRIVEN INTAKE VALVE 有权转让
标题翻译：具有电磁驱动进气阀的高压燃油供给泵
公开(公告)号：EP3228859A1
公开(公告)日：2017-10-11
申请号：EP17168029.1
申请日：2011-10-14
申请人： Hitachi Automotive Systems, Ltd.
发明人： USUI, Satoshi , TOKUO, Kenichiro , KAWANO, Tatsuo , HAYATANI, Masahiko , TAMURA, Shingo , YAMADA, Hiroyuki , MIYAZAKI, Katsumi
IPC分类号： F02M59/36
CPC分类号： F02M63/0035 , F02M59/367 , F02M59/368 , F02M63/0017 , F02M63/0019 , F02M2200/315 , F02M2200/8061 , F04B49/243
摘要： It is an object of the present invention to to eliminate a valve holder and accommodate a valve guide in a small space provided between a valve seat and a peripheral surface part of a pressure chamber to thereby bring a pump into less size. In order to achieve the above object, the valve guide SG which guides a stroke of a valve 203 is provided inside the valve seat 214S. Specifically, a valve 203 includes an annular abutting surface 203R that abuts a valve seat 214S formed in a valve housing 214 to shut off a fuel intake passage and a bottomed cylindrical part 203F, 203H provided at an inner peripheral part of the annular abutting surface 203R. The bottomed cylindrical part 203F, 203H is inserted into a fuel introduction hole 214P formed in the valve housing 214 inside the valve seat 214S. A member having a cylindrical surface part which supports a reciprocating motion of the valve 203, is fixed to the valve housing 214, in face-to-face with an inner peripheral part of the bottomed cylindrical part 203F, 203H. Thus, the size of the valve guide SG that protrudes from the surface of the valve seat 214S to the pressure chamber side can be shortened. It is therefore possible to bring an inlet valve mechanism portion into less size and eventually render the pump in a small size.
摘要翻译：本发明的目的是消除阀支架并将阀导管容纳在设置在阀座和压力腔的周边表面部分之间的小空间中，从而使泵的尺寸减小。为了实现上述目的，在阀座214S的内部设置有引导阀203的行程的阀引导件SG。具体而言，阀203包括环形抵靠表面203R，该环形抵靠表面203R抵靠形成在阀壳体214中的阀座214S，以切断燃料进入通道;以及设置在环形抵靠表面203R的内周边部分处的有底圆筒形部分203F，203H 。有底圆筒部203F，203H插入到形成于阀座214内的阀座214S内的燃料导入孔214P内。具有支撑阀203的往复运动的圆柱形表面部分的构件与有底圆筒形部分203F，203H的内周部分面对面地固定到阀壳体214。由此，能够缩短从阀座214S的表面向压力室侧突出的阀导件SG的大小。因此可以使入口阀机构部分的尺寸更小并且最终使得泵的尺寸更小。

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