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公开(公告)号：US20250052213A1
公开(公告)日：2025-02-13
申请号：US18720177
申请日：2021-12-17
Applicant: VOLVO TRUCK CORPORATION
Inventor： Jan EISMARK , Rickard EHLESKOG , Tommy SIMONSSON , Gustavo HINDI
Abstract: A nozzle cap for a fuel gas injection arrangement of an internal combustion engine has: a body part defining an inner volume for accommodating a part of a movable valve arrangement, an inlet for receiving gaseous fuel, and at least one outlet arranged at an axial end portion of the nozzle cap. The at least one outlet permits discharge of one or more gas jets of fuel into a combustion chamber of the internal combustion engine. The axial end portion of the nozzle cap has a radial protrusion extending from an inner side of the nozzle cap towards an axial center axis and is delimited in a circumferential direction by axially-extending side sections, said radial protrusion having an inner surface region for reducing a crossflow of the fuel gas flow inside the nozzle cap and guiding said fuel gas flow towards the at least one outlet.
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公开(公告)号：US20250059940A1
公开(公告)日：2025-02-20
申请号：US18720205
申请日：2021-12-17
Applicant: VOLVO TRUCK CORPORATION
Inventor： Jan EISMARK , Tommy SIMONSSON , Rickard EHLESKOG , Gustavo HINDI
Abstract: A fuel gas injection arrangement directly injects a gaseous fuel into a combustion chamber of an internal combustion engine. The fuel gas has a nozzle cap having a body part with an inner circumferential side partly defining an inner volume, an inlet for receiving gaseous fuel and at least one outlet at an axial end portion of the nozzle cap; an inlet valve arrangement at least partly accommodated in the body part. The inlet valve arrangement is movable between a closed position in which a portion of the inlet valve arrangement is in abutment with a valve seat of the nozzle cap to prevent fuel gas from entering the inlet, and an open position in which the fuel gas is allowed to flow between the inlet and the at least one outlet. The nozzle cap has a flow-guiding portion on the inner circumferential side and the inlet valve arrangement has a corresponding protruding flow-guiding portion protruding radially towards the inner circumferential side. The nozzle cap flow-guiding portion and the valve protruding flow-guiding portion cooperate to redirect gaseous fuel received from the inlet towards the at least one outlet such that gaseous fuel jets exiting the at least one outlet converge towards a geometrical intersection-axial center region.
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公开(公告)号：US20150308371A1
公开(公告)日：2015-10-29
申请号：US14650559
申请日：2012-12-18
Applicant: VOLVO TRUCK CORPORATION
Inventor： Jan EISMARK
IPC: F02F3/00
CPC classification number: F02F3/0015 , F02B23/0627 , F02B23/0651 , Y02T10/125
Abstract: A piston for a cylinder of a combustion engine includes piston crown including a piston bowl formed by an upwardly facing cavity, the piston bowl including a floor section with a central, and a side section, the side section connecting the inner section with an upper surface of the piston crown, wherein the side section is formed with mutually spaced apart ridges protruding towards the apex, and wherein the side section having at least one recess at an upper end of the side section connecting the side section with the upper surface of the piston crown.
Abstract translation: 内燃机气缸的活塞包括活塞冠，其包括由向上面向的腔形成的活塞碗，所述活塞碗包括具有中心的地板部分和侧部，所述侧部分将所述内部部分与上表面 ，其中所述侧部形成有朝向所述顶点突出的相互间隔开的脊，并且其中所述侧部在所述侧部的上端处具有至少一个凹部，所述至少一个凹部将所述侧部与活塞的上表面连接 王冠。
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公开(公告)号：US20250059937A1
公开(公告)日：2025-02-20
申请号：US18720133
申请日：2021-12-17
Applicant: VOLVO TRUCK CORPORATION
Inventor： Jan EISMARK , Rickard EHLESKOG , Gustavo HINDI , Tommy SIMONSSON
Abstract: A fuel injection arrangement admits a flow of hydrogen into a combustion chamber of hydrogen internal combustion engine. The fuel injection arrangement has a nozzle cap and an inlet valve arrangement. An inner surface of the nozzle cap comprises a nozzle protrusion protruding radially towards an envelope surface of a flow guiding portion of the inlet valve arrangement. The nozzle protrusion is arranged axially between a valve protrusion of the inlet valve arrangement and an outlet of the nozzle cap. The valve protrusion and the nozzle protrusion at least partly overlap in a radial direction.
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Patent Agency Ranking
公开(公告)号：US20190003372A1
公开(公告)日：2019-01-03
申请号：US16063179
申请日：2016-12-20
Applicant: VOLVO TRUCK CORPORATION
Inventor： Jan EISMARK
Abstract: A piston crown is provided for a piston in an internal combustion engine arrangement that includes a cylinder, the piston crown having a piston bowl surface adapted for facing a combustion chamber in the cylinder, wherein the piston bowl surface including a circumferential rim portion, a floor portion connected to and surrounded by the circumferential rim portion, a plurality of circumferentially spaced protrusions in the circumferential rim portion, at least one spray impingement portion, located between two adjacent protrusions. The spray impingement portion includes a reflection surface, being defined by that each possible normal to the reflection surface is directed towards a central axis of the piston, and forming an angle being within a range of a constant angle ±10° with the central axis, wherein the constant angle is at least 50°.
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公开(公告)号：US20250059926A1
公开(公告)日：2025-02-20
申请号：US18719665
申请日：2021-12-17
Applicant: VOLVO TRUCK CORPORATION
Inventor： Jan EISMARK , Rickard EHLESKOG , Tommy SIMONSSON , Gustavo HINDI
Abstract: An internal combustion engine, system includes an internal combustion engine for combustion of gaseous fuel and having a combustion chamber at least partially delimited by a cylinder; a reciprocating piston moveable within said cylinder between a bottom dead centre (BDC) and a top dead centre (TDC), The reciprocating piston has a piston top end comprising a piston bowl intended to form part of the combustion chamber. A controllable fuel injector is arranged to inject gaseous fuel into the combustion chamber and towards the piston bowl. A controller controls the fuel injector to inject at least one gaseous fuel jet toward a bottom surface of the piston bowl during a fuel injection period occurring prior to an ignition event of the gaseous fuel.
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公开(公告)号：US20250043745A1
公开(公告)日：2025-02-06
申请号：US18718339
申请日：2021-12-17
Applicant: VOLVO TRUCK CORPORATION
Inventor： Jan EISMARK , Tommy SIMONSSON , Rickard EHLESKOG , Gustavo HINDI
Abstract: A piston for an internal combustion engine operable on a gaseous fuel is provided. The piston has a piston top end comprising a piston bowl for receiving at least one gaseous fuel jet from a fuel injector of the ICE, said piston bowl having a bottom section and a circumferential side section extending in an axial direction between the bottom section and a piston top end surface, wherein said bottom section comprises a protrusion segment configured to guide said at least one gaseous fuel jet. The protrusion segment further extends between spaced apart regions of the circumferential side section.
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公开(公告)号：US20250043738A1
公开(公告)日：2025-02-06
申请号：US18719671
申请日：2021-12-17
Applicant: VOLVO TRUCK CORPORATION
Inventor： Jan EISMARK , Rickard EHLESKOG , Tommy SIMONSSON , Gustavo HINDI
Abstract: An internal combustion engine system includes an internal combustion engine for combustion of gaseous fuel and has a combustion chamber at least partially delimited by a cylinder; a reciprocating piston moveable within said cylinder between a bottom dead centre and a top dead centre, said reciprocating piston having a piston top end comprising a piston bowl intended to form part of the combustion chamber The piston bowl has a plurality of spaced-apart protrusions circumferentially distributed around a centre axis on a bottom section of the piston bowl, each one of the spaced-apart protrusions extending a substantial part in a radial direction towards the centre axis; a controllable fuel injector injects gaseous fuel with a low injection pressure into the combustion chamber and toward the piston bowl; and a controller controls the controllable fuel injector to inject at least one gaseous fuel jet towards the bottom section of the piston bowl during a fuel injection period occurring prior to an ignition event of the gaseous fuel.
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9.发明公开公开(公告)号：US20240344488A1
公开(公告)日：2024-10-17
申请号：US18579724
申请日：2021-07-23
Applicant: VOLVO TRUCK CORPORATION
Inventor： Jan EISMARK , Gustavo HINDI , Rickard EHLESKOG , Tommy SIMONSSON
IPC: F02M21/02
CPC classification number: F02M21/026 , F02M21/0206 , F02M61/1806
Abstract: A nozzle cap for a fuel injection nozzle operable in a hydrogen internal combustion engine includes an inlet for receiving a flow of hydrogen controllable by an inlet valve arrangeable in the inlet, at least one outlet for providing an exit flow of hydrogen, and an internal bottom flow-guiding body arranged at a bottom side of the nozzle cap downstream of the inlet in a nozzle cap volume, the internal bottom flow-guiding body protruding towards the inlet and comprises a flow-guiding surface for re-directing a flow of hydrogen from the inlet towards the outlet.
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