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公开(公告)号：US20240344493A1
公开(公告)日：2024-10-17
申请号：US18291719
申请日：2022-06-08
申请人： Robert Bosch GmbH
CPC分类号： F02M59/46 , F02M63/005
摘要： A high-pressure fuel pump has an inlet valve and a pressure-limiting valve which fluidically connects a high-pressure region to an inlet valve region located, in terms of geometry, between the inlet valve and an electromagnetic actuator of the high-pressure fuel pump, which acts upon the inlet valve via a tappet.
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公开(公告)号：US20240018926A1
公开(公告)日：2024-01-18
申请号：US17866785
申请日：2022-07-18
摘要： A high-pressure fuel pump is disclosed. The high-pressure fuel pump comprises a housing, and a barrel that is positioned within the housing. A plunger is positioned in a pumping chamber that is defined within the barrel. The plunger is adapted to reciprocate within the pumping chamber that is defined within the barrel to facilitate delivering pressurized fuel from the pumping chamber to a fuel injector. A T-shaped valve and an inverse T-shaped valve are each positioned within a fuel inlet port that is defined in the barrel of the high-pressure fuel pump, the T-shaped valve and the inverse T-shaped valve adapted to regulate a flow of fuel between the pumping chamber and a fuel gallery of the high-pressure fuel pump is also disclosed.
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公开(公告)号：US20230383716A1
公开(公告)日：2023-11-30
申请号：US18030817
申请日：2021-10-06
发明人： Paul F. GARLAND , Toby PEDLEY
CPC分类号： F02M59/464 , F02M59/442
摘要： A pump for a fuel delivery system comprises a main housing and a plunger housing arranged to couple to the main housing so as to define a compression chamber therebetween. The main housing and the plunger housing comprise respective first and second opposed faces which are arranged to form a seal therebetween. The main housing comprises a projecting portion which projects from the first face of the main housing through an opening in the second face of the plunger housing into a plunger bore.
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公开(公告)号：US11781513B2
公开(公告)日：2023-10-10
申请号：US17784560
申请日：2020-12-11
申请人： HITACHI ASTEMO, LTD.
CPC分类号： F02M59/462 , F02M63/007 , F02M63/0071 , F02M63/0075 , F02M63/0077 , F02M63/0078
摘要： Provided is a discharge valve mechanism capable of improving responsiveness when a discharge valve is opened, and a high-pressure fuel supply pump including the discharge valve mechanism.
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公开(公告)号：US20230304482A1
公开(公告)日：2023-09-28
申请号：US18326230
申请日：2023-05-31
申请人： Cummins Inc.
CPC分类号： F04B7/0076 , F04B53/1022 , F04B53/1035 , F02M59/466
摘要： A pump inlet valve includes a valve body and a plunger assembly. The valve body includes a valve body cavity. The plunger assembly is arranged within the valve body cavity and includes a plunger body, a plunger barrel formed at the plunger body so as to form a plunger barrel volume, and a plunger. The plunger is configured to move within the plunger barrel to thereby allow a fluid to flow past the plunger assembly when the plunger is in an open position and to inhibit the fluid from flowing past the plunger assembly when the plunger is in a closed position. The plunger is configured to allow continuous fluid communication between the plunger barrel volume and a supply inlet, through which fluid is supplied to the pump inlet valve.
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公开(公告)号：US20230243324A1
公开(公告)日：2023-08-03
申请号：US17592055
申请日：2022-02-03
CPC分类号： F02M37/0029 , F02M59/46 , F16K15/02 , F16K17/0433 , F16K17/065 , F16K17/082
摘要： A fuel valve device and a method of controlling fuel flow between a fuel tank and an engine are disclosed. A fuel valve comprises an inlet conduit including an inlet end connectable to a fuel tank and a central axis, an outlet conduit including an outlet end opposite the inlet end connectable to an engine. The outlet conduit has a central axis offset from the inlet conduit central axis. A movable valve ball is configured to block fuel flow from the inlet end to the outlet end at a predetermined pressure and to permit the fuel flow from the inlet end to the outlet end when pressure in the fuel valve device exceeds the predetermined pressure, movable along a travel axis defining an angle with the inlet conduit central axis that is greater than 5 degrees and less than 90 degrees.
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公开(公告)号：US11572857B2
公开(公告)日：2023-02-07
申请号：US17116577
申请日：2020-12-09
发明人： Kyung Chul Han , Hyeong Kyun Park , Jin Sung Kim , Chun Ky Hong
摘要： A suction valve of a high-pressure fuel pump for a vehicle includes a housing having an inlet through which a fuel is introduced and a pump chamber configured to press the fuel, a valve installation space arranged between the inlet and the pump chamber, and a solenoid part provided with a rod for performing a linear reciprocal motion, and further includes a valve sleeve inserted into the valve installation space and formed with a flow hole, a valve spring seated on the valve sleeve, a valve plate elastically supported by the valve spring, and moving in conjunction with the rod, and a valve sheet formed with an introduction hole opened and closed by the valve plate, in which the valve sleeve is slid and inserted into the valve installation space, and the valve sheet is fitted into and fastened to the valve installation space to support the valve sleeve.
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公开(公告)号：US20230024509A1
公开(公告)日：2023-01-26
申请号：US17783337
申请日：2020-12-09
申请人： RKLAB AG
摘要： An injector apparatus (10) for injecting fluid under pressure into an associated chamber (32), the apparatus including a body (12), a first piston (14) moveable in the body, the first piston (14) defining a first working area facing an associated chamber (32), a high pressure piston (18, 118) defining a high pressure working area (182) facing a high pressure chamber (19, 119), the first working area being greater than the high pressure working area (182), the first piston (14) being operable to compress fluid in the high pressure chamber (19, 119), the first piston (14) further defining an injector orifice (76) through which the fluid can be injected into an associated chamber (32) from the high pressure chamber (19,119) and defining a valve seat (57), a valve member (92) selectively operable to engage the valve seat (57) to operably isolate the high pressure chamber (19, 119) from the injector orifice (76) and selectively operable to disengage the valve seat (57) to fluidly connect the high pressure chamber (19, 119) with the injector orifice (76).
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公开(公告)号：US11519372B2
公开(公告)日：2022-12-06
申请号：US17466991
申请日：2021-09-03
申请人： DENSO CORPORATION
发明人： Hisatoshi Shibuya
摘要： 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.
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公开(公告)号：US11255305B2
公开(公告)日：2022-02-22
申请号：US17082882
申请日：2020-10-28
申请人： Cummins Inc.
发明人： Iannelli Olivares , Bryce Short
摘要： A manifold configured to inhibit air recirculation in an engine fueling system, the manifold comprising: a housing including an internal chamber in communication with a high pressure pump (“HPP”) port configured to receive drain fuel from a HPP; a drain port configured to return fuel to a fuel tank; an air bleed port configured to receive air bled from the fueling system; and a check valve positioned within the internal chamber, the check valve configured to inhibit air from flowing from the air bleed port to the HPP port, thereby inhibiting air recirculation into the engine fueling system.
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