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公开(公告)号：US09879887B2
公开(公告)日：2018-01-30
申请号：US15111872
申请日：2014-12-16
申请人： DENSO CORPORATION
发明人： Toru Takahashi , Eitaro Tanaka , Satoshi Inoue , Masatoshi Kuroyanagi , Yoichiro Kawamoto , Etsuhisa Yamada , Haruyuki Nishijima
IPC分类号： F25B1/10 , F04F5/20 , F04F5/46 , F04F5/48 , F25B40/02 , F25B41/00 , F25B41/06 , F04F5/18 , F04F5/54 , F25B27/00 , B60H1/32
CPC分类号： F25B1/10 , B60H2001/3298 , F04F5/18 , F04F5/20 , F04F5/46 , F04F5/48 , F04F5/54 , F25B27/00 , F25B40/02 , F25B41/00 , F25B41/062 , F25B2327/001 , F25B2341/0012 , F25B2400/23 , F25B2500/18
摘要： An ejector has a swirling space, a pressure reducing space, a suction passage, a pressure increasing space, a nozzle passage, a diffuser passage, a passage forming member that forms the nozzle passage and the diffuser passage, and a vibration suppressing portion that suppresses a vibration of the passage forming member. The vibration suppressing portion has (i) a first elastic member that applies a load to the passage forming member in a direction in which an area of a cross section perpendicular to the direction of the central axis of the nozzle passage and the diffuser passage decreases and (ii) a second elastic member that applies a load to the passage forming member in a direction opposite from the direction in which the first elastic member applies the load to the passage forming member.
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公开(公告)号：US09850892B2
公开(公告)日：2017-12-26
申请号：US15349148
申请日：2016-11-11
申请人： DENSO CORPORATION
IPC分类号： F16K1/32 , F04B53/10 , F02M59/46 , F02M63/00 , F02M59/36 , F16K31/44 , F02M59/02 , F04B19/22 , F04B53/14 , F04B53/16 , F16K1/42 , F16K1/50 , F16K1/54 , F16K31/06
CPC分类号： F04B53/1087 , F02M59/02 , F02M59/368 , F02M59/46 , F02M59/466 , F02M63/0035 , F02M63/0075 , F02M63/0077 , F02M63/0078 , F04B7/0076 , F04B19/22 , F04B53/103 , F04B53/1032 , F04B53/14 , F04B53/16 , F16K1/32 , F16K1/42 , F16K1/50 , F16K1/54 , F16K31/0655 , F16K31/44
摘要： A valve seat has an inner passage and outer passages. A suction valve member has first passages and a first projection portion that guides, to the first passages, the fuel that flows from a pressure chamber at the time of valve opening. Therefore, an action force by the dynamic pressure applied to the suction valve member in the valve closing direction is reduced. An action force by the pressure of fuel that flows into pressure equalization grooves counterbalances the action force by the dynamic pressure of the suction valve member. Therefore, self-closing by the dynamic pressure can be inhibited, and the maximum output of an electromagnetic driving unit can be reduced. Fuel flow through a passage radially outside the suction valve member and the firs passages. A fluid passage area is securable even when a lift amount of the suction valve member is small.
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公开(公告)号：US20150139825A1
公开(公告)日：2015-05-21
申请号：US14609918
申请日：2015-01-30
申请人： DENSO CORPORATION
CPC分类号： F02M59/102 , F02M59/48 , F04B7/04 , F04B19/22 , F04B39/121 , F04B39/122 , F04B39/127 , F04B39/14
摘要： During a pressurization stroke of a high-pressure pump, a cylinder inner wall and a plunger receive a fuel pressure from the pressurization chamber. Meanwhile, an upper housing does not receive the fuel pressure from the pressurization chamber, so that its thickness can be made thin. A cylinder is comprised of a bottom portion, a cylindrical portion and a large-diameter cylindrical portion. When inserting the large-diameter cylindrical portion into a large engaging hole, the bottom portion and the cylindrical portion are not brought into contact with a lower housing. A high liquid-tightness between the bottom portion, the cylindrical portion and a small engaging hole can be ensured.
摘要翻译： 在高压泵的加压冲程期间，气缸内壁和柱塞接收来自加压室的燃料压力。 同时，上部壳体不会从加压室接收燃料压力，使得其厚度可以变薄。 气缸由底部，圆筒部和大直径圆筒部构成。 当将大直径圆柱形部分插入大的接合孔中时，底部和圆柱形部分不会与下部壳体接触。 可以确保底部，圆筒部和小接合孔之间的高液密性。
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公开(公告)号：US10030650B2
公开(公告)日：2018-07-24
申请号：US14872794
申请日：2015-10-01
申请人： DENSO CORPORATION
IPC分类号： F04B53/10 , F04B17/05 , F04B1/04 , F04B53/14 , F04B19/22 , F04B49/035 , F04C14/26 , F04B49/24 , F04B53/16 , F04B53/00 , F16K17/04
CPC分类号： F04B53/109 , F04B1/0404 , F04B17/05 , F04B19/22 , F04B49/035 , F04B49/24 , F04B53/00 , F04B53/1087 , F04B53/14 , F04B53/16 , F04C14/26 , F16K17/048
摘要： A valve body is provided with a discharge relief portion. A relief valve outlet is formed in an end face thereof on a central axis of the valve body. Discharge valve inlets are point-symmetrically formed with respect to the central axis. A discharge valve outlet is formed in another end face thereof and relief valve inlets are point-symmetrically formed with respect to the central axis. A discharge valve outlet and the discharge valve inlets communicate with each other. A flow of fuel from a pressurization chamber to a fuel discharge port is restricted by a discharge valve member capable of closing the discharge valve outlet. The relief valve outlet and the relief valve inlets communicate with each other. A flow of fuel from the fuel discharge port to the pressurization chamber is restricted by a relief valve member capable of closing the relief valve outlet.
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公开(公告)号：US20160115953A1
公开(公告)日：2016-04-28
申请号：US14989122
申请日：2016-01-06
申请人： DENSO CORPORATION
发明人： Masatoshi Kuroyanagi , Mamoru Urushizaki , Yasuaki Matsunaga , Shinobu Oikawa , Noriya Matsumoto
CPC分类号： F04B53/16 , F02M59/025 , F02M59/368 , F02M59/44 , F02M59/462 , F02M59/466 , F02M2200/03 , F02M2200/8084 , F04B7/0266 , F04B9/12 , F04B53/10 , Y10T137/85978
摘要： A high-pressure pump is comprised of a lower housing, an upper housing and a cover, which are formed independently from each other. Thereby, shapes of the above can be simplified. Although the cylinder and the plunger receive a fuel pressure during a pressurization stroke, the upper housing and the cover do not receive fuel pressure directly from a pressurization chamber. Therefore, the upper housing and the cover can be made thin and light as much as possible.
摘要翻译： 高压泵由彼此独立地形成的下壳体，上壳体和盖组成。 由此，能够简化上述的形状。 虽然气缸和柱塞在加压冲程期间接收燃料压力，但是上壳体和盖子直接不从加压室接收燃料压力。 因此，可以尽可能地使上壳体和盖体变得薄且轻。
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公开(公告)号：US09926926B2
公开(公告)日：2018-03-27
申请号：US14989122
申请日：2016-01-06
申请人： DENSO CORPORATION
发明人： Masatoshi Kuroyanagi , Mamoru Urushizaki , Yasuaki Matsunaga , Shinobu Oikawa , Noriya Matsumoto
CPC分类号： F04B53/16 , F02M59/025 , F02M59/368 , F02M59/44 , F02M59/462 , F02M59/466 , F02M2200/03 , F02M2200/8084 , F04B7/0266 , F04B9/12 , F04B53/10 , Y10T137/85978
摘要： A high-pressure pump is comprised of a lower housing, an upper housing and a cover, which are formed independently from each other. Thereby, shapes of the above can be simplified. Although the cylinder and the plunger receive a fuel pressure during a pressurization stroke, the upper housing and the cover do not receive fuel pressure directly from a pressurization chamber. Therefore, the upper housing and the cover can be made thin and light as much as possible.
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公开(公告)号：US09840995B2
公开(公告)日：2017-12-12
申请号：US14609918
申请日：2015-01-30
申请人： DENSO CORPORATION
CPC分类号： F02M59/102 , F02M59/48 , F04B7/04 , F04B19/22 , F04B39/121 , F04B39/122 , F04B39/127 , F04B39/14
摘要： During a pressurization stroke of a high-pressure pump, a cylinder inner wall and a plunger receive a fuel pressure from the pressurization chamber. Meanwhile, an upper housing does not receive the fuel pressure from the pressurization chamber, so that its thickness can be made thin. A cylinder is comprised of a bottom portion, a cylindrical portion and a large-diameter cylindrical portion. When inserting the large-diameter cylindrical portion into a large engaging hole, the bottom portion and the cylindrical portion are not brought into contact with a lower housing. A high liquid-tightness between the bottom portion, the cylindrical portion and a small engaging hole can be ensured.
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公开(公告)号：US09528609B2
公开(公告)日：2016-12-27
申请号：US14725492
申请日：2015-05-29
申请人： DENSO CORPORATION
CPC分类号： F04B53/1087 , F02M59/02 , F02M59/368 , F02M59/46 , F02M59/466 , F02M63/0035 , F02M63/0075 , F02M63/0077 , F02M63/0078 , F04B7/0076 , F04B19/22 , F04B53/103 , F04B53/1032 , F04B53/14 , F04B53/16 , F16K1/32 , F16K1/42 , F16K1/50 , F16K1/54 , F16K31/0655 , F16K31/44
摘要： A valve seat has an inner passage and outer passages. A suction valve member has first passages and a first projection portion that guides, to the first passages, the fuel that flows from a pressure chamber at the time of valve opening. Therefore, an action force by the dynamic pressure applied to the suction valve member in the valve closing direction is reduced. An action force by the pressure of fuel that flows into pressure equalization grooves counterbalances the action force by the dynamic pressure of the suction valve member. Therefore, self-closing by the dynamic pressure can be inhibited, and the maximum output of an electromagnetic driving unit can be reduced. Fuel flow through a passage radially outside the suction valve member and the first passages. A fluid passage area is securable even when a lift amount of the suction valve member is small.
摘要翻译： 阀座具有内通道和外通道。 抽吸阀构件具有第一通道和第一突出部分，其在阀打开时将从压力室流动的燃料引导到第一通道。 因此，通过在关闭方向施加到吸入阀构件的动压力的作用力减小。 通过流入压力平衡槽的燃料的压力的作用力通过吸入阀构件的动压抵消作用力。 因此，能够抑制动压下的自闭，能够降低电磁驱动部的最大输出。 燃料流过通过吸入阀构件和第一通道径向外侧的通道。 即使当吸入阀构件的提升量小时，流体通道区域也是可固定的。
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公开(公告)号：US09945363B2
公开(公告)日：2018-04-17
申请号：US14620954
申请日：2015-02-12
IPC分类号： F04B11/00 , F02M59/46 , F02M59/02 , F04B53/14 , F02M37/06 , F04B1/04 , F04B53/22 , F04B53/16 , F04B53/00 , F02M59/48 , F02M59/10
CPC分类号： F04B11/0033 , F02M37/06 , F02M59/02 , F02M59/102 , F02M59/46 , F02M59/48 , F04B1/0404 , F04B11/0016 , F04B53/007 , F04B53/143 , F04B53/16 , F04B53/162 , F04B53/22
摘要： A cylinder is configured into a bottomed tubular form and includes an inner peripheral wall, an inner bottom wall, an outer peripheral wall and an intake hole and a discharge hole. The inner peripheral wall slidably guides the plunger. The intake hole and the discharge hole communicate between the inner peripheral wall and the outer peripheral wall. A pump housing includes a cylinder receiving hole that includes an inner peripheral wall, into which the cylinder is inserted. A pressurizing chamber is formed by the inner peripheral wall and the inner bottom wall of the cylinder and a distal end outer wall of the plunger.
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