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公开(公告)号：US11840984B2
公开(公告)日：2023-12-12
申请号：US18079594
申请日：2022-12-12
发明人： Jan Eismark , Tommy Simonsson , Rickard Ehleskog , Gustavo Hindi
CPC分类号： F02F3/24 , F02B3/02 , F02B2201/04 , F02B2275/40
摘要： An internal combustion engine for gaseous fuel includes a cylinder and a piston for reciprocal movement in the cylinder along a reciprocal axis, whereby a combustion chamber is at least partially delimited by the cylinder and the piston. The piston includes a piston crown facing the combustion chamber, a piston crown projection of the piston crown in a direction parallel to the reciprocal axis and onto a piston crown plane extending transversally to the reciprocal axis having a piston crown center point, the piston crown comprising a piston bowl surface defining a piston bowl and a piston rim portion enclosing the piston bowl surface. A piston bowl opening is the intersection between the piston rim portion and the piston bowl surface. The piston bowl opening has an opening center of gravity in the piston crown plane. The opening center of gravity is offset from the piston crown center point.
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公开(公告)号：US11608773B2
公开(公告)日：2023-03-21
申请号：US17150384
申请日：2021-01-15
发明人： Matthew T. Riley
IPC分类号： F02B23/04 , F02B23/06 , F02D41/30 , F02F3/24 , F02B75/04 , F02F1/22 , F02F1/42 , F02P19/02 , F02B19/14 , F02D41/00
摘要： Apparatuses, systems and method for utilizing multi-zoned combustion chambers (and/or multiple combustion chambers) for achieving compression ignition (and/or spark-assisted or fuel-assisted compression ignition) in an internal combustion engine are provided. In addition, improved apparatuses, systems and methods for achieving and/or controlling compression ignition (and/or spark-assisted or fuel-assisted compression ignition) in a “Siamese cylinder” internal combustion engine are provided.
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公开(公告)号：US11572848B1
公开(公告)日：2023-02-07
申请号：US17518593
申请日：2021-11-04
摘要： The present invention allows the air-fuel mixture to swirl in a combustion chamber to increase the power from the engine. Each engine cylinder contains a piston, a combustion chamber, and at least one intake valve, exhaust valve, and spark-plug. Also, the top of the piston head contains a hole that forms the entry point of a converging nozzle, where the air-fuel mixture is first directed downwards and then horizontally through intake nozzles onto ramps located on the inner walls of the combustion chamber that allows the air-fuel mixture to swirl in a counter-clock wise motion. This swirling effect causes a cyclone inside the combustion chamber that when ignited it results in an additional explosive force that drives the piston downwards with additional acceleration, which increase the power produced by the engine.
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公开(公告)号：US11287038B2
公开(公告)日：2022-03-29
申请号：US17177254
申请日：2021-02-17
发明人： Daisuke Kato
摘要： A joining support jig includes: a cylinder support for supporting a cylinder; an annular body support for supporting an annular body; and a plurality of movable members that can approach or separate from the cylinder. Each of the plurality of movable members extends from the cylinder side to the annular body side and across an abutment surface between the cylinder and the annular body in the thickness direction of the movable member. Further, the movable members are each formed with a gas supply groove that is depressed in the direction away from the cylinder and has an opening opposing the abutment surface.
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公开(公告)号：US11162410B2
公开(公告)日：2021-11-02
申请号：US17056786
申请日：2019-05-29
申请人： Scania CV AB
发明人： Anders Jäger , Thomas Hällqvist , Daniel Norling
摘要： A diesel engine includes at least one cylinder (1) with a piston (2) having a piston bowl (3). A fuel injector (6) is configured to direct a fuel spray towards a target area (21) on an annular wall section (22) of the piston bowl so as to make a flame (20) formed by ignition of the fuel spray hit the target area. The target area borders, via a flow separation edge (23), on a lowered flow separation area (24) on the annular wall section so as to give this annular wall section a stepped configuration. The flow separation edge and flow separation area are configured to induce the formation of a vortex-filled wake between the flame and the flow separation area on the downstream side of the flow separation edge when the flame flows from the target area, across the flow separation edge and over the flow separation area.
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公开(公告)号：US11041457B2
公开(公告)日：2021-06-22
申请号：US16618321
申请日：2018-05-31
发明人： Satoshi Imamura , Masaki Fukuma , Yasushi Nakahara , Atsushi Inoue , Kota Matsumoto , Yoshiharu Ueki , Michiharu Kawano , Yuya Honda , Kento Onishi
摘要： A structure of a combustion chamber for an engine includes: a crown surface of a piston; a combustion chamber ceiling surface formed on a cylinder head; and an ignition plug mounted on the combustion chamber ceiling surface, and including an ignition portion disposed in such a way as to face the combustion chamber. The crown surface of the piston includes a cavity which is recessed in a cylinder axis direction in a region including a position below the ignition portion of the ignition plug in a plan view from the cylinder axis direction. A rim portion of the cavity includes a guide portion, raised in the cylinder axis direction with respect to an inner region of the rim portion, interposing the ignition portion when the piston is at a compression top dead center, and configured to guide an air-fuel mixture within the combustion chamber to the ignition portion.
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公开(公告)号：US20210180508A1
公开(公告)日：2021-06-17
申请号：US17056786
申请日：2019-05-29
申请人： Scania CV AB
发明人： Anders JÄGER , Thomas HÄLLQVIST , Daniel NORLING
摘要： A diesel engine includes at least one cylinder (1) with a piston (2) having a piston bowl (3). A fuel injector (6) is configured to direct a fuel spray towards a target area (21) on an annular wall section (22) of the piston bowl so as to make a flame (20) formed by ignition of the fuel spray hit the target area. The target area borders, via a flow separation edge (23), on a lowered flow separation area (24) on the annular wall section so as to give this annular wall section a stepped configuration. The flow separation edge and flow separation area are configured to induce the formation of a vortex-filled wake between the flame and the flow separation area on the downstream side of the flow separation edge when the flame flows from the target area, across the flow separation edge and over the flow separation area.
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公开(公告)号：US20200232416A1
公开(公告)日：2020-07-23
申请号：US16252641
申请日：2019-01-20
发明人： Roy James Primus , Adam Edgar Klingbeil , Dattatraya Somnath Bhagoji , Kevin Scott McElhaney , Bhaskar Tamma , Ravichandra Srinivasa Jupudi , Kevin Paul Bailey
摘要： A piston crown for a combustion system is disclosed. The piston crown includes a piston bowl having a circumferential recess and a plurality of first recesses arranged spaced apart from each other along a circumferential direction. The circumferential recess is disposed proximate to a circumference of the piston crown. Each recess of the plurality of the first recesses extends between a center of the piston crown and the circumferential recess, and a width and a depth of each recess of the plurality of first recesses are extended along a radial direction for an entire length of each recess of the plurality of first recesses.
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公开(公告)号：US20200080468A1
公开(公告)日：2020-03-12
申请号：US16461324
申请日：2016-11-22
发明人： Jun Kanzaki , Motoshi Kataoka , Sangkyu Kim , Shinya Iida , Shintaro Okada , Tomonori Harada , Shun Namba
摘要： A diesel engine comprises: a cylinder head covering one end of a cylinder; a piston having a crown surface opposed to the cylinder head, and performing a reciprocating movement within the cylinder; and a fuel injector attached to the cylinder head. The cylinder head is formed with an intake port so as to generate a swirl flow within the cylinder. The crown surface of the piston is formed with a cavity which is recessed toward an opposite side of the cylinder head and which has a circular shape in planar view, and a notch which is recessed radially outward from a peripheral edge of the cavity. The fuel injector is formed with an injection hole oriented toward an inside of the cavity.
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公开(公告)号：US10240557B2
公开(公告)日：2019-03-26
申请号：US15523210
申请日：2015-10-27
发明人： Sascha-Oliver Boczek , Timo Linke , Rainer Scharp
摘要： A cooling channel cover for a piston of an internal combustion engine may include a body having mutually opposite end faces. At least one supply element for a coolant may be received in an opening disposed in the cooling channel cover. The supply element may include an inlet region and an outlet region, and may be held on the cooling channel cover via a clipped-in latching connection. A spring tab may be disposed on the inlet region of the supply element, and/or a latching element may be disposed on the outlet region of the supply element. The spring clip may engage one of the end faces and the latching element may engage the opposite end face.
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