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公开(公告)号：EP3088727A1
公开(公告)日：2016-11-02
申请号：EP14875656.2
申请日：2014-12-24
申请人： IHI Corporation
发明人： MASUDA Yutaka , YAMADA Takayuki , KUGE Takahiro , YAMADA Takeshi
CPC分类号： F02B25/04 , F02B2075/025 , F02D19/0647 , F02D19/0689 , F02D19/0692 , F02D19/10 , F02M21/0218 , F02M21/0278 , F02M21/0284 , Y02T10/32 , Y02T10/36
摘要： A uniflow scavenging 2-cycle engine that includes: a plurality of injection valves (160) provided at a fuel supply path (170) in parallel to each other and control ejection of fuel gas from injection ports (132e); a hydraulic pump (174) configured to discharge hydraulic oil and thereby switches the injection valves; a main flow path (176) configured to guide the hydraulic oil discharged from the hydraulic pump; a plurality of branch flow paths (178) which branch off from the main flow path and configured to guide the hydraulic oil from the main flow path to the injection valves; and switching valves (180) provided at the plurality of respective branch flow paths and configured to switch the injection valves. The branch flow paths are connected to one or more of the injection valves that control the ejection of the fuel gas from the plurality of injection ports adjacent to each other in a circumferential direction of a cylinder. The ejection of the fuel gas from the plurality of injection ports adjacent to each other is controlled by switching one switching valve provided at one of the branch flow paths.
摘要翻译： 一种直流扫气式二冲程发动机，包括：多个喷射阀（160），彼此平行地设置在燃料供应通道（170）处并且控制从喷射口（132e）喷射燃料气体; 液压泵（174），其构造成排出液压油并由此切换喷射阀; 主流路（176），其构造成引导从液压泵排出的液压油; 多个分支流路（178），该分支流路从主流路分支并构造成将来自主流路的液压油引导至喷射阀; 以及设置在所述多个相应的分支流动路径处并配置成切换所述喷射阀的切换阀（180）。 分支流动路径连接到一个或多个喷射阀，这些喷射阀控制来自在气缸的圆周方向上彼此相邻的多个喷射口的燃料气体的喷射。 通过切换设置在其中一个分支流路上的一个切换阀来控制来自彼此相邻的多个喷射口的燃料气体的喷射。
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公开(公告)号：EP2995796B1
公开(公告)日：2019-04-24
申请号：EP14795189.1
申请日：2014-05-09
申请人： IHI Corporation
发明人： KUGE Takahiro , MASUDA Yutaka , YAMADA Takayuki , YAMADA Takeshi
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公开(公告)号：EP3088727B1
公开(公告)日：2018-08-22
申请号：EP14875656.2
申请日：2014-12-24
申请人： IHI Corporation
发明人： MASUDA Yutaka , YAMADA Takayuki , KUGE Takahiro , YAMADA Takeshi
CPC分类号： F02B25/04 , F02B2075/025 , F02D19/0647 , F02D19/0689 , F02D19/0692 , F02D19/10 , F02M21/0218 , F02M21/0278 , F02M21/0284 , Y02T10/32 , Y02T10/36
摘要： A uniflow scavenging 2-cycle engine that includes: a plurality of injection valves (160) provided at a fuel supply path (170) in parallel to each other and control ejection of fuel gas from injection ports (132e); a hydraulic pump (174) configured to discharge hydraulic oil and thereby switches the injection valves; a main flow path (176) configured to guide the hydraulic oil discharged from the hydraulic pump; a plurality of branch flow paths (178) which branch off from the main flow path and configured to guide the hydraulic oil from the main flow path to the injection valves; and switching valves (180) provided at the plurality of respective branch flow paths and configured to switch the injection valves. The branch flow paths are connected to one or more of the injection valves that control the ejection of the fuel gas from the plurality of injection ports adjacent to each other in a circumferential direction of a cylinder. The ejection of the fuel gas from the plurality of injection ports adjacent to each other is controlled by switching one switching valve provided at one of the branch flow paths.
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公开(公告)号：EP2891780A1
公开(公告)日：2015-07-08
申请号：EP13832951.1
申请日：2013-08-30
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 (110) in which a combustion chamber is formed; a piston that slides in the cylinder; a scavenging port (122) 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 (126) 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： 根据本发明的单流扫气式二冲程发动机包括：气缸（110），其中形成有燃烧室; 在气缸内滑动的活塞; 扫气口（122），其设置在所述气缸的沿所述活塞的行程方向的一端，并根据所述活塞的滑动移动而将活性气体吸入所述燃烧室; 燃料喷射部（126），其设置于比所述扫气口的贯通方向的宽度的中心靠所述气缸的外侧的所述扫气口，向吸入所述扫气口的所述活性气体喷射燃料气体 。
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公开(公告)号：EP2891780B1
公开(公告)日：2018-01-10
申请号：EP13832951.1
申请日：2013-08-30
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 (110) in which a combustion chamber is formed; a piston that slides in the cylinder; a scavenging port (122) 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 (126) 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.
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公开(公告)号：EP2905450A1
公开(公告)日：2015-08-12
申请号：EP13843592.0
申请日：2013-10-03
申请人： IHI Corporation
CPC分类号： F02D41/0077 , F02B25/04 , F02B75/02 , F02B2075/025 , F02D13/0284 , F02D19/0692 , F02D19/10 , F02D41/0027 , F02D41/1459 , F02D41/3047 , F02D2041/001 , F02D2400/04 , F02M21/0275 , F02M21/0284 , Y02T10/18 , Y02T10/32 , Y02T10/36
摘要： A uniflow scavenging 2-cycle engine (100) includes: a cylinder (110) in which a combustion chamber (140) is formed; a piston (112) sliding in the cylinder; scavenging ports (122) formed in an inner circumferential surface of one end of the cylinder in a stroke direction of the piston and suctioning an active gas into the combustion chamber according to the sliding motion of the piston; fuel injection valves (128) generating a premixed gas by injecting a fuel gas into the active gas suctioned from the scavenging ports into the combustion chamber; an exhaust port (116) formed in the other end of the cylinder in the stroke direction of the piston; exhaust valves (120) opening and closing the exhaust port; and an exhaust valve driving mechanism (118) opening and closing the exhaust valve such that a time required to displace the exhaust valve from a fully opened position to a fully closed position is longer than that required to displace the exhaust valve from the fully closed position to the fully opened position. With this constitution, an injection start timing of the fuel gas can be advanced while blow-by of the fuel gas is suppressed.
摘要翻译： 单流清扫的二冲程发动机（100）包括：形成有燃烧室（140）的气缸（110） 在气缸中滑动的活塞（112）; 在所述活塞的行程方向上形成在所述气缸的一端的内周面的清扫口（122），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; 燃料喷射阀（128），其通过将燃料气体喷射到从所述扫气口吸入燃烧室的活性气体中而产生预混合气体; 在所述活塞的冲程方向上形成在所述气缸的另一端的排气口（116） 排气门（120）打开和关闭排气口; 以及排气门驱动机构（118），其打开和关闭排气门，使得将排气阀从完全打开位置移动到完全关闭位置所需的时间长于将排气阀从完全关闭位置移位所需的时间 到完全打开的位置。 利用这种构造，可以抑制燃料气体的窜气，可以提高燃料气体的喷射开始正时。
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公开(公告)号：EP2891790A1
公开(公告)日：2015-07-08
申请号：EP13833096.4
申请日：2013-08-29
申请人： IHI Corporation
CPC分类号： F02B25/02 , F02B7/08 , F02B25/04 , F02B2075/025 , F02D19/10 , F02D41/0027 , F02D41/3094 , F02D41/32 , F02D41/34 , F02D2041/389 , F02D2250/08 , F02D2400/04 , F02M21/0275 , F02M21/0281 , F02M21/0284 , Y02T10/32 , Y02T10/36 , Y02T10/44
摘要： A uniflow-scavenging-type two-cycle engine (100) includes: a cylinder (110); a piston (112) that slides in the cylinder; an exhaust port (116) that is provided at a first end of the cylinder; an exhaust valve (120) that opens and closes the exhaust port; a scavenging port (122) that is provided in an inner circumferential surface of a second end of the cylinder in the stroke direction of the piston and inhales an active gas into a combustion chamber (140) in accordance with a sliding movement of the piston; a plurality of fuel injection valves (128) 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; and a fuel injection control unit (152) that varies injection directions of fuel gas injected from a part or all of the fuel injection valves (128).
摘要翻译： 单清扫型双冲程发动机（100）包括：气缸（110）; 活塞（112），其在所述气缸中滑动; 设置在所述气缸的第一端的排气口（116） 排气门，其开闭所述排气口; 清除口122设置在所述活塞的行程方向上的所述气缸的第二端的内周面中，并根据所述活塞的滑动运动将活性气体吸入燃烧室; 多个燃料喷射阀（128），其向从所述扫气口向所述燃烧室吸入的活性气体喷射燃料气体，从而产生预混合气体; 以及燃料喷射控制单元（152），其改变从部分或全部燃料喷射阀（128）喷射的燃料气体的喷射方向。
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公开(公告)号：EP3734040A1
公开(公告)日：2020-11-04
申请号：EP18895837.5
申请日：2018-12-28
申请人： IHI CORPORATION
发明人： MASUDA Yutaka , UMEMOTO Yoshiyuki
摘要： A variable compression device of the present disclosure includes: a piston rod (6); a fluid chamber forming member (7a) which forms a portion of a fluid chamber (R3) configured to move the piston rod in a direction in which a compression ratio is increased by supplying a boosted working fluid thereto; a regulation member (7c) which is configured to regulate movement of the piston rod in a direction in which a compression ratio is increased; and a sliding ring (6d) which is provided on a circumferential surface of the piston rod to be slidable with respect to the fluid chamber forming member, in which a lower space (R7) surrounded by the fluid chamber forming member and the piston rod is formed below the sliding ring, an upper space (R6) surrounded by the fluid chamber forming member, the piston rod, and the regulation member is formed above the sliding ring, and the fluid chamber forming member includes a communication channel (R11) that is configured to guide a portion of the working fluid, which is supplied to the lower space as a coolant, to the upper space.
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