公开(公告)号：US20240309835A1

公开(公告)日：2024-09-19

申请号：US18576971

申请日：2022-06-20

Applicant: PHINIA DELPHI LUXEMBOURG SARL

Inventor： Christopher MCCRINDLE ,  Diego GUERRATO ,  Abdul AZIZ

IPC: F02M59/10 ,  F02M63/00 ,  F04B1/0426 ,  F04B53/18

CPC classification number: F02M59/102 ,  F02M63/0001 ,  F04B1/0426 ,  F04B53/18

Abstract: A roller tappet assembly for a reciprocating pump comprises: a tappet body; a pin element comprising: first and second opposing end portions that engage respective formations in the tappet body to retain the pin element, and a bearing portion, extending between the first and second end portions, for supporting a cam rider arrangement. The cam rider arrangement is supported on the bearing portion of the pin element so that, in use, the reciprocating pump is cyclically loaded and unloaded as an outer surface of the cam rider arrangement interfaces with a rotating camshaft. At least one of: the bearing portion of the pin element; and/or an inner surface of the cam rider arrangement; comprises one or more recessed formations for supporting hydrodynamic lubrication between the cam rider arrangement and the pin element as the bearing portion bends during the loading cycle.

公开(公告)号：US20180313313A1

公开(公告)日：2018-11-01

申请号：US15769238

申请日：2016-10-05

Applicant: Hitachi Automotive Systems, Ltd.

Inventor： Daisuke KITAJIMA ,  Kenichi GUNJI ,  Shinichirou ENOMOTO ,  Masayuki KOBAYASHI ,  Masamichi YAGAI ,  Masahiro MORITAKA

IPC: F02M59/26 ,  F02M59/44 ,  F02M59/48 ,  F04B1/04 ,  F04B1/053 ,  F04B11/00 ,  F04B53/16 ,  F04B7/00 ,  F04B9/04

CPC classification number: F02M59/26 ,  F02M59/442 ,  F02M59/485 ,  F02M2200/16 ,  F02M2200/8015 ,  F02M2200/8053 ,  F04B1/0426 ,  F04B1/0448 ,  F04B1/053 ,  F04B7/0076 ,  F04B9/042 ,  F04B11/0016 ,  F04B53/16

Abstract: Provided is a high-pressure fuel supply pump capable of fixing a cylinder to a pump body with excellent sealability in a simple structure even at a high fuel pressure.A high-pressure fuel supply pump including a pump body in which a pressurizing chamber is formed, and a cylinder inserted into a hole formed in the pump body and formed in a cylindrical shape, the high-pressure fuel supply pump including: a protrusion disposed at an end portion of the pump body opposite to the pressurizing chamber, formed from an outer peripheral side to an inner peripheral side with respect to an inner peripheral surface opposite to an outer peripheral surface of the cylinder, and protruding toward the cylinder, wherein the protrusion is formed so as to protrude to a side opposite to the pressurizing chamber with respect to a flat portion of the end portion of the pump body, and the protrusion is formed so as to support the cylinder from a side opposite to the pressurizing chamber.

公开(公告)号：US10077772B2

公开(公告)日：2018-09-18

申请号：US15063720

申请日：2016-03-08

Applicant: Jon Trip

Inventor： Jon Trip

IPC: F04C2/44 ,  F04C9/00

CPC classification number: F04C9/002 ,  F04B1/0408 ,  F04B1/0413 ,  F04B1/0426 ,  F04B1/053 ,  F04B9/042 ,  F04B53/14 ,  F04B53/16 ,  F04C2240/10

Abstract: A rotary compressor or pump has a cam with a plurality of lobes mechanically engaging a plurality of pistons. The lobes urge the pistons from an open to a closed position within a piston void, the closure of the piston into the piston void creating compression or pressure of a material. Each piston is linked to another piston, and as one piston is closed by the cam, the other piston is opened by a linkage.

公开(公告)号：US10024286B2

公开(公告)日：2018-07-17

申请号：US15200092

申请日：2016-07-01

Applicant: GT Technologies

Inventor： John E. Brune ,  Scott P. Smith

IPC: F01L1/14 ,  F02M59/10 ,  F02M59/06 ,  F04B1/04 ,  F01L1/08 ,  F02M39/02 ,  F01L1/047

CPC classification number: F02M59/102 ,  F01L1/047 ,  F01L1/08 ,  F01L2107/00 ,  F02M39/02 ,  F02M59/06 ,  F02M2200/50 ,  F02M2200/852 ,  F04B1/0426

Abstract: A tappet assembly for use in translating force between a camshaft lobe and a fuel pump assembly via reciprocal movement within a tappet cylinder having a guide slot. The tappet assembly includes a bearing assembly having a shaft and a bearing rotatably supported by the shaft for engaging the lobe. An intermediate element has a first aperture, a shelf for engaging the fuel pump assembly, and a pair of arc-shaped bearing surfaces rotatably engaging the shaft when the bearing engages the lobe and the shelf engages the fuel pump assembly. An annular body has a second aperture and at least one stop member abutting the intermediate element to align the first aperture with the second aperture. An anti-rotation clip is disposed so as to extend through the apertures and cooperates with the stop member to substantially prevent rotational and axial movement of the intermediate element with respect to the body.

公开(公告)号：US20180180005A1

公开(公告)日：2018-06-28

申请号：US15388169

申请日：2016-12-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Davide Di Nunno ,  Luca Trabucchi

IPC: F02M59/02 ,  F02M59/10 ,  F04B17/05 ,  F04B19/22 ,  F04B53/16

CPC classification number: F02M59/027 ,  F02M59/102 ,  F04B1/0408 ,  F04B1/0426 ,  F04B1/0439 ,  F04B1/053 ,  F04B9/042 ,  F04B17/05 ,  F04B19/22 ,  F04B53/144 ,  F04B53/16

Abstract: A pump assembly and a propulsion system that utilizes the pump assembly includes a casing defining an opening. The pump assembly also includes a first member at least partially disposed in the opening. The first member is movable linearly relative to the opening. The pump assembly further includes a biasing member disposed in the opening. The biasing member is movable independently of the first member. The first member is movable in a first direction that applies a load to the biasing member which creates a torque on the biasing member. The pump assembly also includes a second member that separates the first member and the biasing member such that the torque on the biasing member is transferred to the second member without transferring the torque to the first member when the first member applies the load to the biasing member.

公开(公告)号：US10001098B2

公开(公告)日：2018-06-19

申请号：US14874833

申请日：2015-10-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroya Ando ,  Kazuhiro Asayama ,  Yoshinori Ogaki

IPC: F04B1/04 ,  F02M59/10 ,  F04B7/00 ,  F04B53/14 ,  F04B9/04

CPC classification number: F02M59/102 ,  F04B1/0408 ,  F04B1/0413 ,  F04B1/0426 ,  F04B1/0439 ,  F04B7/0057 ,  F04B9/042 ,  F04B53/14

Abstract: 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.

公开(公告)号：US09772022B2

公开(公告)日：2017-09-26

申请号：US14499580

申请日：2014-09-29

Applicant: Nicolas Berruet ,  Charles Chambonneau ,  François Champalou ,  Benoît Hauvespre ,  Samuel Viault

Inventor： Nicolas Berruet ,  Charles Chambonneau ,  François Champalou ,  Benoît Hauvespre ,  Samuel Viault

IPC: F01L1/14 ,  F16H53/06 ,  F02M59/10 ,  F02M59/48 ,  F04B1/04 ,  F02M37/06

CPC classification number: F16H53/06 ,  F01L1/14 ,  F01L1/143 ,  F01L2105/02 ,  F02M37/06 ,  F02M59/102 ,  F02M59/48 ,  F02M2200/852 ,  F02M2200/9015 ,  F04B1/0408 ,  F04B1/0426 ,  Y10T29/49826 ,  Y10T74/2107

Abstract: A mechanical system, comprising a support element, a pin extending along a first axis and comprising two opposite ends, each adapted to be fitted in the support element for radial retention of the pin relative to the first axis, and a roller element movable in rotation relative to the pin around the first axis. The mechanical system includes two ribs resting on either side of the ends for axial retention of the pin along the first axis. The mechanical system can be integrated into either an injection pump or a valve actuator.

公开(公告)号：US20170260947A1

公开(公告)日：2017-09-14

申请号：US15511295

申请日：2015-07-14

Applicant: Robert Bosch GmbH

Inventor： Christian Graspeuntner

IPC: F02M59/10 ,  F04B15/00 ,  F04B9/04 ,  F04B17/05

CPC classification number: F02M59/102 ,  F04B1/0408 ,  F04B1/0417 ,  F04B1/0426 ,  F04B9/042 ,  F04B15/00 ,  F04B17/05 ,  F05C2251/02

Abstract: The invention relates to a reciprocating pump (1) comprising a roller tappet (2) and a pump plunger (10) that is operatively connected to the roller tappet (2). The roller tappet (2) has a roller support (3), a roller (4) and a pin (5). A first bearing eye (6) and a second bearing eye (7) are formed in the roller support (3), the pin (5) being supported in the first bearing eye (6) and in the second bearing eye (7). The roller (4) is rotatably mounted on the pin (5). The pin (5) is mounted more resiliently in the first bearing eye (6) than in the second bearing eye (7).

公开(公告)号：US09759173B2

公开(公告)日：2017-09-12

申请号：US14704057

申请日：2015-05-05

Applicant: Hitachi Automotive Systems, Ltd.

Inventor： Minoru Hashida ,  Hiroyuki Yamada ,  Masayuki Suganami ,  Sunao Takahashi ,  Toru Onose ,  Hideaki Yamauchi ,  Kazuichi Ishige

IPC: F02M59/10 ,  F02M59/02 ,  F02M59/44

CPC classification number: F02M59/102 ,  F02M59/025 ,  F02M59/44 ,  F02M59/442 ,  F04B1/0408 ,  F04B1/0426

Abstract: A high-pressure fuel pump includes a pump body, a plunger, a retainer, a spring that is configured to energize the plunger in a direction opposite to a direction of the pressurizing chamber, and a tappet covering the retainer from a side of an end portion of the retainer and the plunger. The retainer is provided with a projection portion protruding to a side of the tappet. The projection portion is separated from the tappet by a predetermined distance along an axial direction of the plunger.

公开(公告)号：US09702329B2

公开(公告)日：2017-07-11

申请号：US13765935

申请日：2013-02-13

Applicant: Continental Automotive GmbH

Inventor： Cristian Adrian Rosu

IPC: F02M69/50 ,  F02M59/10 ,  F04B1/04 ,  F02M59/44

CPC classification number: F02M69/50 ,  F02M59/102 ,  F02M59/44 ,  F04B1/0426

Abstract: A high-pressure pump may include a cylinder, a plunger reciprocally driven by an eccentric to pressurize a pump chamber in the cylinder, a rider mounted on the eccentric to allow relative rotation of the eccentric, the rider presenting a face to the plunger, a tappet supported on the face of the rider for transmitting reciprocal movement from the rider to the plunger, and rotatable bearing elements that support the tappet for relative transverse movement of the face of the rider during operation of the pump. The rotatable bearing elements may be at least partially recessed in a body of the tappet. A common rail fuel injection system for an internal combustion engine comprising a common rail for distributing fuel to a plurality of fuel injectors associated with combustion cylinders of the engine may include such a pump for delivering fuel at high pressure to the common rail.