-
公开(公告)号：US12188440B2
公开(公告)日：2025-01-07
申请号：US18180281
申请日：2023-03-08
Applicant: MARELLI EUROPE S.P.A.
Inventor： Armando Spizzirri , Riccardo Marianello , Luca Mancini , Stefano Petrecchia , Michele Petrone , Paolo Pasquali
IPC: F02M59/46 , F02M59/36 , F02M59/48 , F16K3/02 , F16K17/164
Abstract: A valve assembly for a fuel pump and having: a one-way outlet closing valve, which only allows fuel to flow out; a one-way pressure relief valve, which only allows fuel to flow in; a connector, which has a housing on the inside; and a valve disc, which engages the housing of the connector and has a plurality of through outlet holes and a through relief hole. A shutter of the outlet closing valve consists of a flexible sheet, which is fixed to the valve disc and has: a plurality of shutting portions arranged in the area of the outlet holes; a peripheral mounting portion with an annular shape; a plurality of outer connection portions, each connecting the peripheral mounting portion to a corresponding shutting portion; a central mounting portion; and a plurality of inner connection portions, each connecting the central mounting portion to a corresponding shutting portion.
-
公开(公告)号：US12140113B2
公开(公告)日：2024-11-12
申请号：US18280490
申请日：2022-02-02
Applicant: Hitachi Astemo, Ltd.
Inventor： Takafumi Ito , Kiyotaka Ogura , Masashi Nemoto , Kenichiro Tokuo
Abstract: The present invention suppresses wear of a rod or a component with which the rod is in contact. An electromagnetic suction valve mechanism (electromagnetic valve mechanism) includes a suction valve (valve body), a rod engaged with the suction valve, and a magnetic attraction force generation unit that generates a magnetic attraction force for moving the rod in an axial direction. The rod is provided with a low friction portion. The low friction portion is set to a friction coefficient such that a frictional force generated between the rod and the rod contact component with which the rod is in contact is smaller than a rotational propulsive force of the rod.
-
公开(公告)号：US20240159208A1
公开(公告)日：2024-05-16
申请号：US18280490
申请日：2022-02-02
Applicant: Hitachi Astemo, Ltd.
Inventor： Takafumi ITO , Kiyotaka OGURA , Masashi NEMOTO , Kenichiro TOKUO
CPC classification number: F02M59/366 , F02M59/44
Abstract: The present invention suppresses wear of a rod or a component with which the rod is in contact. An electromagnetic suction valve mechanism (electromagnetic valve mechanism) includes a suction valve (valve body), a rod engaged with the suction valve, and a magnetic attraction force generation unit that generates a magnetic attraction force for moving the rod in an axial direction. The rod is provided with a low friction portion. The low friction portion is set to a friction coefficient such that a frictional force generated between the rod and the rod contact component with which the rod is in contact is smaller than a rotational propulsive force of the rod.
-
公开(公告)号：US20240133356A1
公开(公告)日：2024-04-25
申请号：US18278330
申请日：2022-03-11
Applicant: Caterpillar Motoren GmbH & Co. KG
Inventor： Robert GRAUMÜLLER
CPC classification number: F02M63/0001 , F02M59/102 , F02M59/36
Abstract: A lubricated high pressure fuel pump assembly is provided, comprising a fuel pump, a sealed enclosure and a pump lubrication circuit. The fuel pump includes a pump drive shaft via which the fuel pump is configured to be mechanically driven. The sealed enclosure is configured to surround a first portion of the pump drive shaft, wherein the first portion is exterior to the fuel pump. The pump lubrication circuit comprises a lubricant reservoir and a lubricant pump configured to pump lubricant from the lubricant reservoir to the pump drive shaft. The sealed enclosure is configured to prevent fluid leakage from the fuel pump via the first portion of the pump drive shaft and the lubricant reservoir is configured to collect the lubricant from the pump drive shaft, such that the lubricant is retained within the lubricated high pressure fuel pump assembly.
-
公开(公告)号：US11525427B2
公开(公告)日：2022-12-13
申请号：US17246804
申请日：2021-05-03
Applicant: DENSO CORPORATION
Inventor： Shuhei Yamamoto , Kazuhiro Onishi
Abstract: A high pressure fuel pump includes: a pump body that forms a suction passage and a pressurizing chamber and slidably supports a plunger; and a control valve that opens a connection between the suction passage and the pressurizing chamber in a suction stroke, during which the plunger is driven toward a suction side for suctioning fuel into the pressurizing chamber, while the control valve controls closing timing, at which the connection between the suction passage and the pressurizing chamber is closed by the control valve in a delivery stroke, during which the plunger is driven toward a delivery side for delivering the fuel out of the pressurizing chamber. The pump body forms a release passage that is communicated with the suction passage. The release passage relieves the fuel, which is pressurized by the plunger, from the pressurizing chamber before the closing timing during the delivery stroke.
-
Patent Agency Ranking
公开(公告)号：US11519372B2
公开(公告)日：2022-12-06
申请号：US17466991
申请日：2021-09-03
Applicant: DENSO CORPORATION
Inventor： Hisatoshi Shibuya
Abstract: A metering valve supplies fuel to and block fuel from a pressurizing chamber by moving a valve body by switching between energization and de-energization of an electromagnetic unit. An energization control unit performs a valve closing control and a valve opening control to reduce operating sound in one opening and closing period in which the valve body opens and closes. A time control unit controls, on determination that the energizing period of the electromagnetic unit exceeds the upper limit value, a moving speed of the valve body when the valve body moves to a valve closing side, such that the energization period of the electromagnetic unit in the one opening and closing period does not exceed the upper limit value, thereby to cause the energization control unit to perform both the valve closing control and the valve opening control in the one opening and closing period.
-
公开(公告)号：US11261988B2
公开(公告)日：2022-03-01
申请号：US16740827
申请日：2020-01-13
Applicant: DENSO CORPORATION
Inventor： Yuichi Miwa , Tetsuya Yoshimura
Abstract: A solenoid valve includes an inner stator and an outer stator that are part of a magnetic circuit. An armature is attracted toward the inner stator when a coil is energized. A spring biases the armature in a direction away from the inner stator. A rod is integrally formed with the armature and integrally reciprocates with the armature. A guide guides reciprocation of the rod. A valve operates by following the rod to open and close a fuel/liquid passage. The spring and sliding portions between the rod and the guide are arranged within a recess portion formed in the inner stator and arranged in parallel to each other while overlapping in the axial direction.
-
公开(公告)号：US11231032B2
公开(公告)日：2022-01-25
申请号：US16026916
申请日：2018-07-03
Applicant: Continental Automotive Systems, Inc.
Inventor： James Fochtman , John Walters , Tyler Craven , Joe Angelino
IPC: F04B17/04 , F04B53/10 , F16K31/06 , F02M37/10 , H01F7/08 , H01F7/16 , F02M59/46 , F02M51/04 , F02M63/00 , F02M37/08 , F02M59/10 , F04B23/02 , F02M55/00 , F04B39/10 , F16K1/42 , F16K15/02 , F16K27/02 , F16K15/14 , F02M51/06 , F02M59/36 , B21D39/06 , F02M37/54 , F02M37/04
Abstract: A fuel pump, is disclosed, including a power group having a housing, a coil, a pole piece and a movable armature; a valve group including a valve body, a plunger connected to the armature, a bushing in which the plunger is disposed, an inlet chamber, an outlet chamber, a pump chamber, an inlet valve disposed between the inlet chamber and the pump chamber and an outlet valve disposed between the pump chamber and the outlet valve; and an inlet filter coupled to a fluid inlet of the valve group. The inlet filter is disposed relative to the coil such that when the fuel pump is disposed within a fuel tank, a bottom of the inlet filter as oriented in the fuel tank is disposed above a fuel level in the fuel tank and the coil is at least partly submerged in the fuel.
-
公开(公告)号：US11149865B2
公开(公告)日：2021-10-19
申请号：US16550373
申请日：2019-08-26
Applicant: DENSO CORPORATION
Inventor： Masaharu Nakaoka
Abstract: A discharge valve includes: a valve main body that slidably contacts an inner peripheral wall of a tubular portion; and a primary passage that is formed at the valve main body and is located between the valve main body and the inner peripheral wall of the tubular portion. A stopper includes: a stopper main body that is formed separately from the tubular portion while the stopper main body is located on a side of the discharge valve that is opposite to the discharge valve seat; a movement limit surface that is configured to limit movement of the discharge valve in a direction away from the discharge valve seat; and a secondary passage that is formed at the stopper main body.
-
公开(公告)号：US11098710B2
公开(公告)日：2021-08-24
申请号：US16390117
申请日：2019-04-22
Applicant: Stanadyne LLC
Inventor： Richard P Pellini , Kenneth R Morel , David G Palermo , Dominic M Myren , Yevgeniy Norkin , Michael Wegrzyniak
Abstract: The disclosed inlet check valve is used in a high pressure fuel pump and is comprised of a valve member integrally connected to a valve stem which is coupled to an inlet valve armature. The valve member has a stroke along an axis between an open position and a closed position. An inlet valve solenoid generates a magnetic field in an inlet valve pole to attract the inlet valve armature and move the valve member from the open position to the closed position. In the open position, the valve member contacts an inlet valve stop and a gap greater than the stroke of the valve member is defined along the axis between the inlet valve armature and the inlet valve pole. In the closed position, an inlet valve seat mates with the valve member and an armature gap remains between the inlet valve armature and the inlet valve pole.
-
-
-
-
-
-
-
-
-
Search Results
1250
records
(took 0.021 seconds)
