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公开(公告)号：US10132311B2
公开(公告)日：2018-11-20
申请号：US14758295
申请日：2014-08-06
发明人： Uwe Nigrin , Ngoc-Tam Vu , Andreas Ederer , Uday Bhat , Thejesh Kumar Magadibyredevaru , Marcin Olik
IPC分类号： F04B53/04 , F02M55/04 , F02M59/02 , F02M59/10 , F02M59/44 , F02M63/00 , F02M59/14 , F02M59/46 , F04B11/00 , F04B43/02 , F04B53/14 , F04B53/16
摘要： A high pressure pump of a common rail pump system includes a pump body having a cylinder with a piston bore and a piston reciprocally driven in the piston bore to pressurize fuel in the cylinder. The piston has an inner end located in the piston bore and an outer end outside the piston bore. A bellow having a first opening and a second opening is arranged between the piston and the pump body, wherein the piston extends through the first and second openings, wherein the bellow is connected to the pump body such that the first opening is sealed on the pump body and wherein the bellow is connected to the outer end of the piston such that the second opening is sealed on the piston. This arrangement prevents mixing of engine oil and fuel. The bellow may be connected to a drainage line via a one-way valve.
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公开(公告)号：US10047743B2
公开(公告)日：2018-08-14
申请号：US14762567
申请日：2014-07-31
IPC分类号： F04B53/16 , F04B53/14 , F02M59/44 , F04B53/00 , F04B53/02 , F04B53/22 , F02M59/02 , F04B19/22
摘要： A high pressure pump for delivering a fluid includes a pump housing with a longitudinal axis and a housing cavity, a piston partly arranged in the housing cavity and axially moveable within the housing cavity and having an axial end directed opposite a driving side of the high pressure pump, and a sealing unit having a sealing body arranged radially outside of the piston such that a first part of the housing cavity is sealed fluid-tight against a second part of the housing cavity. The sealing body includes a neck with an inner diameter smaller than a first diameter of a part of the piston arranged between the sealing body neck and the axial end of the piston. The piston has a second diameter in an axial area in which the sealing body neck is arranged, which second diameter is smaller than the first diameter.
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公开(公告)号：US20160208796A1
公开(公告)日：2016-07-21
申请号：US14758295
申请日：2014-08-06
发明人： Uwe Nigrin , Ngoc-Tam Vu , Andreas Ederer , Uday Bhat , Thejesh Kumar Magadibyredevaru , Marcin Olik
CPC分类号： F04B53/04 , F02M55/04 , F02M59/025 , F02M59/102 , F02M59/14 , F02M59/44 , F02M59/442 , F02M59/46 , F02M63/0054 , F02M2200/31 , F02M2200/315 , F02M2200/9015 , F04B11/00 , F04B43/02 , F04B53/14 , F04B53/16
摘要： A high pressure pump of a common rail pump system includes a pump body having a cylinder with a piston bore and a piston reciprocally driven in the piston bore to pressurize fuel in the cylinder. The piston has an inner end located in the piston bore and an outer end outside the piston bore. A bellow having a first opening and a second opening is arranged between the piston and the pump body, wherein the piston extends through the first and second openings, wherein the bellow is connected to the pump body such that the first opening is sealed on the pump body and wherein the bellow is connected to the outer end of the piston such that the second opening is sealed on the piston. This arrangement prevents mixing of engine oil and fuel. The bellow may be connected to a drainage line via a one-way valve.
摘要翻译： 共轨泵系统的高压泵包括具有活塞孔的缸体和在活塞孔中往复驱动的活塞的泵体，以对气缸中的燃料加压。 活塞具有位于活塞孔内的内端和活塞孔外的外端。 具有第一开口和第二开口的波纹管布置在活塞和泵体之间，其中活塞延伸穿过第一和第二开口，其中波纹管连接到泵体，使得第一开口密封在泵 主体，并且其中波纹管连接到活塞的外端，使得第二开口被密封在活塞上。 这种布置防止发动机油和燃料混合。 波纹管可以通过单向阀连接到排水管。
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公开(公告)号：US20160186742A1
公开(公告)日：2016-06-30
申请号：US14762567
申请日：2014-07-31
CPC分类号： F04B53/143 , F02M59/025 , F02M59/442 , F04B19/22 , F04B53/008 , F04B53/02 , F04B53/16 , F04B53/164 , F04B53/22
摘要： A high pressure pump for delivering a fluid includes a pump housing with a longitudinal axis and a housing cavity, a piston partly arranged in the housing cavity and axially moveable within the housing cavity and having an axial end directed opposite a driving side of the high pressure pump, and a sealing unit having a sealing body arranged radially outside of the piston such that a first part of the housing cavity is sealed fluid-tight against a second part of the housing cavity. The sealing body includes a neck with an inner diameter smaller than a first diameter of a part of the piston arranged between the sealing body neck and the axial end of the piston. The piston has a second diameter in an axial area in which the sealing body neck is arranged, which second diameter is smaller than the first diameter.
摘要翻译： 用于输送流体的高压泵包括具有纵向轴线和壳体空腔的泵壳体，活塞部分地布置在壳体空腔中并且可在壳体空腔内轴向移动并且具有与高压的驱动侧相对的轴向端 泵和密封单元，其具有设置在活塞的径向外侧的密封体，使得壳体腔的第一部分被密封地密封抵靠壳体腔的第二部分。 密封体包括内径小于设置在密封体颈部与活塞的轴向端之间的活塞的一部分的第一直径的颈部。 活塞在轴向区域中具有第二直径，密封体颈部布置在该区域中，该第二直径小于第一直径。
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