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公开(公告)号：US20240352899A1
公开(公告)日：2024-10-24
申请号：US18685893
申请日：2022-08-23
发明人： Diego GUERRATO , Neil WILSON
CPC分类号： F02D41/0027 , F02D19/022 , F02D19/0644
摘要： A fuel system for supplying gaseous fuel to an onboard power plant of a vehicle, the fuel system comprising at least a first tank configured to receive pressurised gaseous fuel for supply to the power plant, in use; a source of auxiliary control fluid for supply to the first tank; and a valve arrangement which is operable to control the supply of auxiliary control fluid to the first tank so as to control the discharge of the gaseous fuel from the first tank; wherein the first tank includes a movable separation element for separating the auxiliary control fluid from the gaseous fuel within the first tank.
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公开(公告)号：US11982242B2
公开(公告)日：2024-05-14
申请号：US17642018
申请日：2020-08-26
CPC分类号： F02D35/027 , F02D41/1498 , F02D41/2467 , F02D2200/0618
摘要： A determination method of opening characteristics of a fuel injector in an internal combustion engine comprising a knock sensor capable of generating a signal representative of vibrations. The knock sensor is used to determine the opening characteristics of the fuel injector. The determination method comprises acquiring the knock sensor signal over a predetermined measurement window synchronised on an injection control signal; and analysing the sensor signal over the measurement window in order to determine a first alternation of a first wave train and to determine the local maximum of the first alternation. The fuel injection is controlled based on the opening characteristic of the injector determined based on this local maximum.
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公开(公告)号：US20240352908A1
公开(公告)日：2024-10-24
申请号：US18685894
申请日：2022-08-23
发明人： Diego GUERRATO , Neil WILSON
CPC分类号： F02M21/023 , F02M21/0206 , F02M21/0224 , F02M21/0245 , F17C5/02 , F17C5/06
摘要： A fuel system for supplying gaseous fuel to a power plant comprises a tank array comprising at least a first tank and a second tank configured to receive pressurised gaseous fuel for supply to the power plant, in use, from a filling station; a source of auxiliary control fluid for supplying auxiliary control fluid to the tank array when the fuel system is disconnected from the filling station; and a pump for pressurising auxiliary control fluid to be supplied to the tank array when control fluid flows through the pump in a forward direction. The fuel system also includes an energy store and a valve arrangement which is operable to control the supply of auxiliary control fluid to the tank array so as to control the discharge of the gaseous fuel from the tank array.
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公开(公告)号：US11982253B2
公开(公告)日：2024-05-14
申请号：US17265052
申请日：2019-07-19
发明人： Guy Hoffmann , Cas Breedijk
CPC分类号： F02M61/18 , F02M51/0671 , F02M61/20
摘要： A fuel injector includes a housing extending along an injector axis. A pintle has an axially extending pintle shaft and a radially projecting annular collar with a collar surface, the pintle being axially moveable between an open position and a closed position. An armature is axially guided in the housing between a proximal position and a distal position, the armature having an axial through-hole in which the pintle shaft is guided and an armature surface which engages the collar surface, thereby moving the pintle into the open position when the armature moves to the proximal position. A first resilient member biases the pintle in the distal direction and a second resilient member biases the armature in the distal direction. The armature surface and the collar surface are slanted with respect to the injector axis and one of the armature surface and the collar surface is convex curved.
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公开(公告)号：US12018680B2
公开(公告)日：2024-06-25
申请号：US17718815
申请日：2022-04-12
CPC分类号： F04C15/0073 , F04C2/10 , F04C15/0076 , F04C2240/30 , F04C2240/40 , F04C2240/50
摘要： A fluid pump includes an inlet plate and an electric motor. The electric motor has a shaft that rotates about an axis. A pumping arrangement is rotationally coupled to the shaft. The pumping arrangement includes an rotating element. The fluid pump further includes a thrust bearing driver including a disc-like plate having first and second faces, and two posts extending perpendicularly from the first face. The shaft has a terminal end including a pair of slots that cooperate with the posts of the thrust bearing driver. The inner gear rotor has an inner surface including a pair of slots that cooperate with the posts of the thrust bearing driver. The posts of the thrust bearing driver are received in the slots of both the shaft and the rotating element, and the thrust bearing driver is sandwiched between the shaft, the inlet plate, and the rotating element.
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公开(公告)号：US12000411B2
公开(公告)日：2024-06-04
申请号：US17570650
申请日：2022-01-07
发明人： John G. Fischer
CPC分类号： F04D5/002 , F04D25/06 , F04D29/18 , F04D29/188 , F04D29/406 , F04D5/001 , F04D13/08
摘要： An impeller for a fluid pump includes a hub having an outer surface; an outer ring which is concentric with the hub and having an inner surface; and a plurality of blades extending from a root at the outer surface to a tip at the inner surface. Each of the blades has a first leg and a second leg which meet at a vertex such that a concave side of the blades faces toward a rotational direction and such that a convex side of the blades faces away from the rotational direction. The concave side of each one of the plurality of blades forms a draft angle with the convex side of another one of the plurality of blades which is immediately adjacent thereto in the rotational direction. The draft angle at the inner surface is less than or equal to 10% of the draft angle at the outer surface.
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公开(公告)号：US11982252B2
公开(公告)日：2024-05-14
申请号：US18036007
申请日：2021-11-10
发明人： David Jones
CPC分类号： F02M55/04 , F02M59/102 , F02M59/30 , F02M59/44 , F02M2200/31 , F02M2700/1376 , F02M2700/1388
摘要： A fuel pump assembly comprises a plunger arranged to reciprocate within a plunger bore via a drive shaft, to perform a pumping cycle comprising a pumping stroke and a return stroke, the pumping stroke comprising movement of the plunger from a bottom dead centre (BDC) position to a top dead centre (TDC) position, and the return stroke comprising movement of the plunger from the TDC position to the BDC position. The fuel pump assembly comprises a spring assembly including a return spring that is cooperable, at a first end, with a first member coupled to the plunger and movable at a first speed dependent on the speed of rotation of the drive shaft and, at a second end, with a second member which is movable at a damped speed relative to the first speed.
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公开(公告)号：US20240352911A1
公开(公告)日：2024-10-24
申请号：US18290204
申请日：2022-05-12
发明人： Andrew PLAYLE , Erol KAHRAMAN
IPC分类号： F02M59/46
CPC分类号： F02M59/466 , F02M2200/502
摘要： An inlet valve assembly of a fluid pump comprises an inlet valve member movable between a closed position and an open position. In the closed position the inlet valve member is arranged to block a pump chamber inlet to prevent fluid from entering or exiting a pump chamber of the fluid pump through the pump chamber inlet. In the open position the inlet valve member is arranged to allow fluid to enter or exit the pump chamber through the pump chamber inlet. The inlet valve assembly further comprises a first biasing means configured to bias the inlet valve member in a first direction, d1, towards the open position, when the inlet valve member is in the closed position; and a second biasing means configured to reduce the speed of the inlet valve member when the inlet valve member is moving in the first direction, d1, towards the open position.
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公开(公告)号：US20240351432A1
公开(公告)日：2024-10-24
申请号：US18685891
申请日：2022-08-23
发明人： Diego GUERRATO , Neil WILSON
IPC分类号： B60K15/077 , B60K15/03
CPC分类号： B60K15/077 , B60K2015/03026 , B60K2015/03118 , B60K2015/03315
摘要： A fuel system for supplying gaseous fuel to a power plant comprises a tank array comprising at least first and second tanks, each tank being configured to receive pressurised gaseous fuel for supply to the power plant; and an auxiliary control fluid delivery system. The auxiliary control fluid delivery system comprises a reservoir of auxiliary control fluid; an auxiliary control fluid pipeline, configured to enable supply of the auxiliary control fluid to the tank array so as to cause discharge of the gaseous fuel held in the tank array and to enable return of the auxiliary control fluid from the tank array; and a valve arrangement which is operable to control the supply and return of auxiliary control fluid to and from the tank array, respectively, so as to control the discharge of the gaseous fuel.
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公开(公告)号：US20240309835A1
公开(公告)日：2024-09-19
申请号：US18576971
申请日：2022-06-20
IPC分类号： F02M59/10 , F02M63/00 , F04B1/0426 , F04B53/18
CPC分类号： F02M59/102 , F02M63/0001 , F04B1/0426 , F04B53/18
摘要： 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.
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