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公开(公告)号：US20160061097A1
公开(公告)日：2016-03-03
申请号：US14935889
申请日：2015-11-09
申请人： IHI Corporation
发明人： Takahiro KUGE , Yutaka MASUDA , Takayuki YAMADA , Takeshi YAMADA
CPC分类号： F02B25/04 , F02B75/02 , F02B2075/025 , F02D19/0647 , F02D19/10 , F02M21/0278 , F02M21/042 , Y02T10/32 , Y02T10/36
摘要： A uniflow scavenging 2-cycle engine includes a cylinder inside which a combustion chamber is formed; a piston which slides within the cylinder; a scavenge port which is provided on one end side in a stroke direction of the piston in the cylinder to suck an active gas into the combustion chamber in accordance with the sliding movement of the piston; and a fuel injection unit which has an injection port located on the outside of the cylinder, and injects the fuel gas into the active gas sucked into the scavenge port.
摘要翻译： 单流清扫2循环发动机包括形成燃烧室的缸体; 在气缸内滑动的活塞; 一个清除口，其设置在气缸的活塞的冲程方向的一端侧，以根据活塞的滑动运动将活性气体吸入燃烧室; 以及燃料喷射单元，其具有位于气缸外侧的喷射口，并且将燃料气体喷射到吸入到清除口中的活性气体中。
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公开(公告)号：US20200300183A1
公开(公告)日：2020-09-24
申请号：US16894749
申请日：2020-06-05
申请人： IHI CORPORATION
摘要： Provided is a marine engine, including: a piston; and a compression ratio controller configured to execute lowering processing of moving a top dead center position of the piston toward a bottom dead center side when an engine rotation speed falls within a resonance occurrence range set in advance. A geometrical compression ratio is reduced, and a resonance stress caused by a torsional vibration in a rotary system can thus be suppressed while suppressing a decrease in thermal efficiency compared with a case in which retarding control is applied to a fuel injection timing or a closing timing of an exhaust valve.
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公开(公告)号：US20150167538A1
公开(公告)日：2015-06-18
申请号：US14629862
申请日：2015-02-24
申请人： IHI CORPORATION
CPC分类号： F02B25/04 , F02B75/02 , F02B2075/025 , F02D41/0027 , F02D41/3094 , F02D2041/0015 , F02D2400/04 , F02M21/0275 , F02M21/0284 , Y02T10/32 , Y02T10/36
摘要： A uniflow-scavenging-type two-cycle engine of the present invention includes: a cylinder; a piston that slides in the cylinder; an exhaust port that is provided at a first end of the cylinder; an exhaust valve that opens and closes the exhaust port; a scavenging port that is provided in an inner circumferential surface of a second end of the cylinder in the stroke direction of the piston and draws in an active gas into the combustion chamber in accordance with a sliding movement of the piston; and a plurality of fuel injection valves that inject a fuel gas to the active gas, which has been drawn in from the scavenging port to the combustion chamber, to thereby generate a premixed gas. The fuel injection valves at least include: a first fuel injection valve that injects a fuel gas along a swirling flow of the active gas drawn in into the cylinder; and a second fuel injection valve that injects a fuel gas toward a direction closer to a central axis of the cylinder than the direction of the fuel gas from the first fuel injection valve.
摘要翻译： 本发明的单清扫型二冲程发动机包括：气缸; 活塞在气缸中滑动; 排气口，其设置在所述气缸的第一端; 排气阀，其开闭排气口; 清扫口，其设置在所述活塞的行程方向的所述气缸的第二端的内周面中，并且根据所述活塞的滑动运动将活性气体吸入所述燃烧室; 以及多个燃料喷射阀，其向从所述扫气口吸入燃烧室的活性气体喷射燃料气体，从而产生预混合气体。 燃料喷射阀至少包括：第一燃料喷射阀，其沿着被吸入气缸中的活性气体的旋转流喷射燃料气体; 以及第二燃料喷射阀，其将燃料气体朝向比来自第一燃料喷射阀的燃料气体的方向更靠近气缸的中心轴线的方向喷射。
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公开(公告)号：US20200291874A1
公开(公告)日：2020-09-17
申请号：US16891969
申请日：2020-06-03
申请人： IHI CORPORATION
摘要： Provided is an engine, including: a cylinder including a cylinder liner; a piston provided inside the cylinder liner; a piston ring provided on the piston; a contact detector configured to detect a contact between a step formed in an inner peripheral surface of the cylinder liner and the piston ring; and a compression ratio controller configured to control a top dead center position of the piston so that the piston ring at the top dead center position is located on a combustion chamber side with respect to the step when the contact is detected.
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公开(公告)号：US20160061099A1
公开(公告)日：2016-03-03
申请号：US14935300
申请日：2015-11-06
申请人： IHI Corporation
发明人： Takahiro KUGE , Yutaka MASUDA , Takayuki YAMADA , Takeshi YAMADA , Masafumi KAWAI , Ken SHIZUYA
CPC分类号： F02B25/06 , F02B23/02 , F02B25/04 , F02B75/02 , F02B2075/025 , F02D19/10 , F02D41/0025 , F02D41/3047 , F02D2400/04 , F02M21/02 , F02M21/0275 , F02M21/0278 , Y02T10/125 , Y02T10/32 , Y02T10/36
摘要： A uniflow scavenging two-cycle engine includes a scavenge port and a plurality of injection units which inject a fuel gas into the active gas sucked into the scavenge port and have different positions of the piston in the stroke direction. The plurality of injection units are divided into at least two sets of injection unit groups include first and second injection unit groups, the first injection unit group being a set of one or a plurality of injection units located on the other end side in the stroke direction, and the second injection unit group being a set of one or a plurality of injection units located on one end side in the stroke direction, and the injection stop of the fuel gas is later in the injection unit of the first injection unit group than in the injection unit of the second injection unit group.
摘要翻译： 单流清扫双循环发动机包括清扫口和多个喷射单元，其将吸入入口的活性气体中的燃料气体注入并且在行程方向上具有不同的活塞位置。 多个喷射单元被分成至少两组喷射单元组，包括第一和第二喷射单元组，第一喷射单元组是位于行程方向另一端侧的一个或多个喷射单元的一组 ，第二喷射单元组是位于行程方向一端侧的一个或多个喷射单元的一组，并且在第一喷射单元组的喷射单元中的燃料气体的喷射停止比在 第二注射单元组的注射单元。
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公开(公告)号：US20210071550A1
公开(公告)日：2021-03-11
申请号：US16953477
申请日：2020-11-20
申请人： IHI CORPORATION
发明人： Yutaka MASUDA , Jun TERAMOTO , Ryo OHARA
摘要： Provided is a compression ratio varying mechanism, including a communication hole including: a first opening opened in an outer peripheral side surface of a piston rod; and a second opening, which is prevented from being opposed to the first opening in a radial direction of a piston rod, and is connected to an oil passage at a position apart from the first opening in a stroke direction.
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公开(公告)号：US20150167537A1
公开(公告)日：2015-06-18
申请号：US14633859
申请日：2015-02-27
申请人： IHI Corporation
CPC分类号： F02B25/02 , F02B7/06 , F02B25/04 , F02B75/02 , F02B2075/025 , F02D19/0647 , F02D19/10 , F02D41/3094 , F02D2400/04 , F02M21/0248 , F02M21/0275 , F02M21/0278 , F02M21/0284 , Y02T10/32 , Y02T10/36
摘要： A uniflow-scavenging-type two-cycle engine according to the present invention includes: a cylinder in which a combustion chamber is formed; a piston that slides in the cylinder; a scavenging port that is provided at one end of the cylinder in a stroke direction of the piston and draws in an active gas into the combustion chamber in accordance with a sliding movement of the piston; a fuel injection section that is provided in the scavenging port on an outer side of the cylinder than a center of a width of the scavenging port in a penetration direction and injects a fuel gas to the active gas drawn in into the scavenging port.
摘要翻译： 根据本发明的单清扫型双冲程发动机包括：形成有燃烧室的气缸; 活塞在气缸中滑动; 清扫口，其沿活塞的行程方向设置在气缸的一端，并根据活塞的滑动运动将活性气体吸入燃烧室; 燃料喷射部，其设置在所述气缸的外侧的所述清扫口中，与所述扫气口的宽度在穿透方向的宽度方向的中心相对，并且将燃料气体喷射到被吸入到所述清扫口内的活性气体。
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公开(公告)号：US20210040881A1
公开(公告)日：2021-02-11
申请号：US17080349
申请日：2020-10-26
申请人： IHI CORPORATION
摘要： Provided is an engine system including: a bypass pipe (bypass flow passage) connecting an upstream side and a downstream side of the turbine on an exhaust flow passage; a bypass valve configured to open and close the bypass flow passage; and a catalytic activation controller configured to control the bypass valve and a compression ratio of a combustion chamber.
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公开(公告)号：US20170175616A1
公开(公告)日：2017-06-22
申请号：US15450227
申请日：2017-03-06
申请人： IHI Corporation
发明人： Yutaka MASUDA , Takahiro KUGE , Takayuki YAMADA , Takeshi YAMADA , Jun TERAMOTO
CPC分类号： F02B25/04 , F02B23/10 , F02B31/00 , F02B43/02 , F02B75/04 , F02B75/044 , F02B2023/108 , F02D15/02 , F02D19/105 , Y02T10/125 , Y02T10/146 , Y02T10/32 , Y02T10/36
摘要： A uniflow scavenging two-cycle engine includes an scavenging port having a swirling guide portion that guides scavenging gas into a cylinder in a direction inclined with respect to a radial direction of the cylinder, and a center guide portion that is provided to be closer to a crank side of the cylinder than the swirling guide portion and guides the scavenging gas further toward the center side of the cylinder than the swirling guide portion. At least a part of the center guide portion faces a piston when the piston is positioned at bottom dead center during the high compression ratio mode, and the center guide portion and the piston do not face each other or an area of facing the piston is smaller than that during the high compression ratio mode when the piston is positioned at bottom dead center during the low compression ratio mode.
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公开(公告)号：US20160061098A1
公开(公告)日：2016-03-03
申请号：US14935233
申请日：2015-11-06
申请人： IHI Corporation
发明人： Takahiro KUGE , Yutaka MASUDA , Takayuki YAMADA , Takeshi YAMADA , Masafumi KAWAI , Ken SHIZUYA
CPC分类号： F02B25/06 , F02B25/04 , F02B75/02 , F02B2075/025 , F02M21/0218 , F02M21/0275 , F02M21/0278 , Y02T10/32
摘要： A uniflow scavenging 2-cycle engine includes a cylinder inside in which a combustion chamber is formed; a piston which slides within the cylinder; a scavenge port which is provided on one end side in a stroke direction of the piston in the cylinder to suck an active gas into the combustion chamber in accordance with the sliding movement of the piston; and an injection unit which injects a fuel gas into the active gas suctioned to the scavenge port and is provided on an inner circumferential surface of the scavenge port or on the outside of the cylinder rather than the inner circumferential surface. Further, the amount of the fuel gas injected by the injection unit on the other end side in the stroke direction is larger than the amount of fuel gas injected by the injection unit on one end side in the stroke direction.
摘要翻译： 单流清扫2循环发动机包括在其内形成有燃烧室的气缸; 在气缸内滑动的活塞; 一个清除口，其设置在气缸的活塞的冲程方向的一端侧，以根据活塞的滑动运动将活性气体吸入燃烧室; 以及喷射单元，其将燃料气体喷射到被抽吸到所述清除口的活性气体中，并且设置在所述清除口的内周面或所述气缸的外侧而不是所述内周面。 此外，喷射单元在行程方向上的另一端侧喷射的燃料气体的量比在喷射单元在行程方向上的一端侧喷射的燃料气体量大。
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