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Patent Agency Ranking
公开(公告)号：EP3135900A4
公开(公告)日：2017-12-13
申请号：EP15782325
申请日：2015-04-17
Applicant: HITACHI AUTOMOTIVE SYSTEMS LTD
Inventor： TOKUO KENICHIROU , YAMADA HIROYUKI , USUI SATOSHI , SUGANAMI MASAYUKI , SAITO ATSUJI , YAGAI MASAMICHI , SASO YUTA
CPC classification number: F02M59/462 , F02M63/0071 , F02M63/0077
Abstract: Provided is a high-pressure fuel supply pump that maintains oil-tight performance even when the fuel pressure is high, and includes a small and lightweight discharge valve structure. The structure prevents the reduction in oil-tight performance caused by the deformation of the seat part due to the high back pressure that the discharge valve receives. The structure also makes the provision of a flow path compatible with the size reduction and weight reduction of the discharge valve. The valve body of the discharge valve includes a guide part and a curved contact surface. Thus, the seat part is formed with Hertzian contact and this formation exerts high oil-tightness even when a high back pressure is applied to the valve body. The guide part is provided to the valve body. This provision determines the position of the curved contact surface. This determination reduces the size and weight of the valve body.
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公开(公告)号：EP3135901A4
公开(公告)日：2018-01-03
申请号：EP15783842
申请日：2015-04-17
Applicant: HITACHI AUTOMOTIVE SYSTEMS LTD
Inventor： YAGAI MASAMICHI , HOHKITA ATSUSHI , YAMADA HIROYUKI , SUGANAMI MASAYUKI , USUI SATOSHI , SAITO ATSUJI , TOKUO KENICHIROU , SASO YUTA
CPC classification number: F02M59/462 , F02M59/34 , F02M59/44 , F02M59/46 , F02M59/485 , F02M63/005 , F04B19/22
Abstract: To increase a valve-opening pressure at which a pressure relief valve is opened in order to deal with a higher pressure of the fuel, a large pressure relief valve is installed in a high-pressure fuel supply pump. This upsizes the high-pressure fuel supply pump. A pressure relief valve is installed in a discharge joint. This can provide a high-pressure fuel supply pump that is not large too much and sufficiently performs a relief function by efficiently using the excessive space in the pump even when the fuel pressure is increased.
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3.发明公开
公开(公告)号：EP3135969A4
公开(公告)日：2017-12-06
申请号：EP15782339
申请日：2015-04-17
Applicant: HITACHI AUTOMOTIVE SYSTEMS LTD
Inventor： SAITO ATSUJI , USUI SATOSHI , YAMADA HIROYUKI , SUGANAMI MASAYUKI , HOHKITA ATSUSHI , SASO YUTA , YAGAI MASAMICHI
CPC classification number: F02M59/368 , F02M59/466 , F02M2200/08 , F16K31/06 , H01F7/16
Abstract: An electromagnetic valve configured to decay the cavitation occurring around a moving part of the electromagnetic valve and prevent the occurrence of erosion is provided. A configuration in which the cavitation bubbles generated around the moving part of the electromagnetic valve are captured and decayed and the occurrence of erosion is prevented is compatible with the low cost for the electromagnetic valve. The compatibility is achieved by the formation of a void large enough to capture the cavitation bubbles in the magnetic resistance increasing part.
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公开(公告)号：EP3135899A4
公开(公告)日：2017-12-27
申请号：EP15782715
申请日：2015-04-17
Applicant: HITACHI AUTOMOTIVE SYSTEMS LTD
Inventor： SUGANAMI MASAYUKI , YAMADA HIROYUKI , USUI SATOSHI , TOKUO KENICHIROU , SAITO ATSUJI , YAGAI MASAMICHI , SASO YUTA , KOBAYASHI MASAYUKI , GUNJI KENICHI
CPC classification number: F04B1/0421 , F02M59/48 , F02M2200/8053 , F02M2200/8061 , F04B1/053 , F04B9/042 , F04B11/00 , F04B53/162
Abstract: A cylinder is fixed to a pump body with a simple structure even when the fuel pressure is high. The cylinder is formed in a cylindrical shape with a bottom, and includes a large-diameter part and a small-diameter part. The surface of a width difference formed between the large-diameter part and the small-diameter part is press-fitted to the pump body in a direction in which a plunger is compressed.
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公开(公告)号：EP3088726A4
公开(公告)日：2017-08-30
申请号：EP14874606
申请日：2014-11-17
Applicant: HITACHI AUTOMOTIVE SYSTEMS LTD
Inventor： SASO YUTA , TAMURA SHINGO , AKIYAMA MORITSUGU , SAITO ATSUJI , YAMADA HIROYUKI , HOHKITA ATSUSHI , USUI SATOSHI
CPC classification number: F04B49/22 , F02M59/025 , F02M59/368 , F02M59/44 , F02M59/447 , F02M59/46 , F02M59/462 , F02M59/48 , F02M2200/8061 , F04B19/22 , F04B53/10 , F04B53/14 , F04B53/16
Abstract: A high-pressure fuel supply pump in which a relief valve mechanism is not detached by a force generated by a differential pressure between an inlet side and an output side of a relief valve mechanism is obtained. According to the present invention, in order to obtain the high-pressure fuel supply pump, the relief valve mechanism of the high-pressure fuel supply pump is oriented from a downstream side of a discharge valve to an upstream side of the discharge valve, and the output side of the relief valve mechanism is inserted from the upstream side of the discharge valve into the pump housing, and the relief valve mechanism is fixed with press fitting. Therefore, a force exerted by the differential pressure between the inlet side pressure and the output side pressure of the relief valve mechanism is exerted in a direction in which the relief valve mechanism is inserted, so that the relief valve mechanism can be prevented from being detached.
Abstract translation: 获得一种高压燃料供应泵，其中安全阀机构不会因安全阀机构的入口侧和输出侧之间的压力差而产生的力而分离。 根据本发明，为了获得高压燃料供给泵，高压燃料供给泵的安全阀机构从排出阀的下游侧朝向排出阀的上游侧，并且 安全阀机构的输出侧从排出阀的上游侧插入泵壳体内，并且安全阀机构通过压配合而固定。 因此，由安全阀机构的入口侧压力和输出侧压力之间的压差施加的力沿安全阀机构插入的方向施加，从而可以防止安全阀机构脱离 。
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