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公开(公告)号：US10690044B2
公开(公告)日：2020-06-23
申请号：US15541888
申请日：2016-01-12
发明人： Kazuro Hotta , Yuta Furukawa , Kazuo Ogura
IPC分类号： F02B37/013 , F02B37/007 , F02B37/00
摘要： A engine system is provided with: a plurality of cylinder groups which burn a gas mixture and discharge an exhaust gas; a plurality of high-pressure stage superchargers each having high-pressure stage turbines driven by the exhaust gas from the corresponding cylinder group and high-pressure stage compressors rotated by driving of the high-pressure stage turbines and configured to compress a gas supplied to the corresponding cylinder group; and a plurality of low-pressure stage superchargers having a low-pressure stage turbine driven by an exhaust gas discharged from the high-pressure stage turbine of the high-pressure supercharger which is any one of the plurality of high-pressure stage superchargers, and a low-pressure stage compressor rotated by driving of the low-pressure stage turbine and configured to compress a gas supplied to the high-pressure stage compressor of the high-pressure stage supercharger other than the one high-pressure stage supercharger.
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公开(公告)号：US09581119B2
公开(公告)日：2017-02-28
申请号：US14360882
申请日：2012-11-19
IPC分类号： F02B23/08 , F02M61/04 , F02B19/12 , F02M21/02 , F02B19/10 , F02D19/02 , F16K31/06 , F02F1/24 , F02B1/04
CPC分类号： F02M61/042 , F02B1/04 , F02B19/108 , F02B19/12 , F02B23/08 , F02B2275/22 , F02B2275/34 , F02D19/024 , F02F2001/245 , F02M21/0239 , F02M21/0269 , F02M21/0275 , F16K31/06 , Y02T10/125 , Y02T10/32
摘要： In an auxiliary chamber gas supplying device for a gas engine including an auxiliary chamber gas supply path (5, 14, 28, and 29) through which fuel gas is supplied to an auxiliary chamber (4), the auxiliary chamber gas supply path is connected to a fuel gas supply source (24) through a solenoid valve (23), and when the solenoid valve is opened, the fuel gas, in an amount corresponding to an opened period of the solenoid valve, is supplied from the fuel gas supply source to the auxiliary chamber through the auxiliary chamber gas supply path, and the opened period of the solenoid valve is set in such a manner that a predetermined amount of fuel gas is supplied to the auxiliary chamber, and a restriction unit (30) that extends the opened period of the solenoid valve is formed in the auxiliary chamber gas supply path (5, 14, 28, and 29).
摘要翻译： 在具有辅助室气体供给路径（5,14,28,29）的燃气发动机的辅助室气体供给装置中，向辅助室（4）供给燃料气体，辅助室气体供给路径被连接 通过电磁阀（23）向燃料气体供给源（24）供给燃料气体供给源（24），当电磁阀打开时，从燃料气体供给源供给与电磁阀的打开期间对应的燃料气体 通过辅助室气体供给路径到达辅助室，并且电磁阀的打开时段被设定为向辅助室供给预定量的燃料气体，并且限制单元（30） 在辅助室气体供给路径（5,14,28,29）中形成电磁阀的打开期间。
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公开(公告)号：US20160245151A1
公开(公告)日：2016-08-25
申请号：US15026169
申请日：2014-10-20
发明人： Akihiro Yuuki , Daisuke Takemoto , Yuta Furukawa
CPC分类号： F02B19/08 , F02B19/108 , F02B19/12 , F02B19/18 , F02B43/04 , F02M21/02 , F02M21/0242 , F02M21/0248 , F02M21/0275 , F02M21/0281 , Y02T10/125 , Y02T10/32
摘要： An object is to improve a trap effect to trap ignition fuel gas supplied to a pre-combustion chamber and reduce an amount of non-combusted ignition fuel gas flowing out of the pre-combustion chamber to suppress a decrease in combustion efficiency. A pre-combustion-chamber type gas engine includes: a pre-combustion chamber Sr disposed on a cylinder head portion 10; a spark plug 20 disposed on an upper part of the pre-combustion chamber Sr; a pre-combustion-chamber gas supply mechanism configured to supply ignition fuel gas “g” to the pre-combustion chamber Sr via gas supply channels for the pre-combustion chamber 22a and 22b with an opening on an upper part of the pre-combustion chamber Sr; and a check valve 24 disposed in the gas supply channel 22b for the pre-combustion chamber. The opening of the gas supply channel 22a for the pre-combustion chamber is disposed on a lower surface of a cover member 16 forming the pre-combustion chamber Sr or on an upper section of a side wall of a pre-combustion-chamber member 14, the opening facing in a tangent direction of a side-wall inner peripheral surface 14a of the pre-combustion-chamber member 14. The ignition fuel gas “g” supplied to the pre-combustion chamber Sr forms a swirl flow s1 which swirls about a longitudinal axis x of the pre-combustion chamber Sr inside the pre-combustion chamber Sr.
摘要翻译： 本发明的目的是提高捕集效果以捕获供应到预燃烧室的点燃燃料气体，并减少从燃烧室流出的未燃烧点火燃料气体的量，以抑制燃烧效率的降低。 预燃室型燃气发动机包括：设置在气缸盖部10上的预燃室Sr; 布置在预燃烧室Sr的上部的火花塞20; 燃烧室内气体供给机构，被构造成通过用于预燃烧室22a和22b的气体供应通道在预燃烧室Sr上提供点燃燃料气体“g”，在预燃烧室的上部具有开口 室Sr; 以及设置在用于预燃室的气体供给通道22b中的止回阀24。 用于预燃室的气体供应通道22a的开口设置在形成预燃室Sr的盖构件16的下表面上或者在预燃室14的侧壁的上部 ，该开口面向预燃室构件14的侧壁内周面14a的切线方向。供给到预燃室Sr的点火燃料气体“g”形成围绕 预燃烧室Sr内的预燃烧室Sr的纵轴x。
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公开(公告)号：US20160312685A1
公开(公告)日：2016-10-27
申请号：US15104505
申请日：2014-12-02
发明人： Yuta Furukawa
CPC分类号： F02B19/16 , F02B19/108 , F02B19/12 , F02B43/00 , F02F1/242 , F02F11/002 , F02M21/0275 , F02M21/0281 , Y02T10/125 , Y02T10/32
摘要： A gas engine includes a cylinder head, a prechamber cap that projects into a main combustion chamber by being inserted into an insertion hole formed in the cylinder head, that internally has a prechamber, and that supplies a flame generated in the prechamber to the main combustion chamber, and a prechamber holder that is disposed inside the cylinder head so as to hold the prechamber cap. One of the prechamber cap and the prechamber holder has a concave portion which accommodates an end portion of the other of the prechamber cap and the prechamber holder. An outer diameter of the end portion is set to be smaller than an inner diameter of the concave portion, thereby forming a space between the concave portion and the end portion at least in a radial direction orthogonal to a central axis.
摘要翻译： 燃气发动机包括气缸盖，通过插入到形成在气缸盖中的插入孔中而突入主燃烧室的预燃室盖，其内部具有预燃室，并将预燃室中产生的火焰供应到主燃烧 腔室和设置在气缸盖内部以便保持前房罩的前室保持器。 前房罩和前房保持器之一具有凹入部分，其容纳另一个前房罩和前房架的端部。 端部的外径被设定为小于凹部的内径，从而至少在与中心轴正交的径向方向上在凹部与端部之间形成空间。
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公开(公告)号：US20150354494A1
公开(公告)日：2015-12-10
申请号：US14760987
申请日：2013-02-20
发明人： Yuta Furukawa , Kazuo Ogura
IPC分类号： F02F1/42
CPC分类号： F02F1/4285 , F01L1/26 , F01L3/06 , F02F1/42 , Y02T10/146
摘要： A cylinder head includes a cylinder head body provided with intake and exhaust ports opened toward a combustion chamber and capable of being closed by valves, the intake and exhaust ports being separated from each other in a circumferential direction around a cylinder central axis. An opening section of at least one of the intake or exhaust ports facing the combustion chamber is provided with a seat surface centered on a valve axis and a tapered surface is disposed closer to the combustion chamber than the seat surface, the tapered surface gradually increasing in diameter closer to the combustion chamber. A central axis of the tapered surface is disposed eccentrically from the valve axis toward the cylinder central axis.
摘要翻译： 气缸盖包括具有朝向燃烧室敞开并能够被阀关闭的进气和排气口的气缸盖本体，所述进气和排气口在围绕气缸中心轴线的圆周方向上彼此分离。 面向燃烧室的进气排气口和排气口中的至少一个的开口部设置有以阀轴为中心的座表面，并且锥形表面设置为比座面更靠近燃烧室，锥形表面逐渐增加 直径更靠近燃烧室。 锥形表面的中心轴线从阀轴线朝向气缸中心轴偏心设置。
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公开(公告)号：US10077708B2
公开(公告)日：2018-09-18
申请号：US15104505
申请日：2014-12-02
发明人： Yuta Furukawa
CPC分类号： F02B19/16 , F02B19/108 , F02B19/12 , F02B43/00 , F02F1/242 , F02F11/002 , F02M21/0275 , F02M21/0281 , Y02T10/125 , Y02T10/32
摘要： A gas engine includes a cylinder head, a prechamber cap that projects into a main combustion chamber by being inserted into an insertion hole formed in the cylinder head, that internally has a prechamber, and that supplies a flame generated in the prechamber to the main combustion chamber, and a prechamber holder that is disposed inside the cylinder head so as to hold the prechamber cap. One of the prechamber cap and the prechamber holder has a concave portion which accommodates an end portion of the other of the prechamber cap and the prechamber holder. An outer diameter of the end portion is set to be smaller than an inner diameter of the concave portion, thereby forming a space between the concave portion and the end portion at least in a radial direction orthogonal to a central axis.
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公开(公告)号：US09816430B2
公开(公告)日：2017-11-14
申请号：US15026169
申请日：2014-10-20
发明人： Akihiro Yuuki , Daisuke Takemoto , Yuta Furukawa
CPC分类号： F02B19/08 , F02B19/108 , F02B19/12 , F02B19/18 , F02B43/04 , F02M21/02 , F02M21/0242 , F02M21/0248 , F02M21/0275 , F02M21/0281 , Y02T10/125 , Y02T10/32
摘要： An object is to improve a trap effect to trap ignition fuel gas supplied to a pre-combustion chamber and reduce an amount of non-combusted ignition fuel gas flowing out of the pre-combustion chamber to suppress a decrease in combustion efficiency. A pre-combustion-chamber type gas engine includes: a pre-combustion chamber Sr disposed on a cylinder head portion 10; a spark plug 20 disposed on an upper part of the pre-combustion chamber Sr; a pre-combustion-chamber gas supply mechanism configured to supply ignition fuel gas “g” to the pre-combustion chamber Sr via gas supply channels for the pre-combustion chamber 22a and 22b with an opening on an upper part of the pre-combustion chamber Sr; and a check valve 24 disposed in the gas supply channel 22b for the pre-combustion chamber. The opening of the gas supply channel 22a for the pre-combustion chamber is disposed on a lower surface of a cover member 16 forming the pre-combustion chamber Sr or on an upper section of a side wall of a pre-combustion-chamber member 14, the opening facing in a tangent direction of a side-wall inner peripheral surface 14a of the pre-combustion-chamber member 14. The ignition fuel gas “g” supplied to the pre-combustion chamber Sr forms a swirl flow s1 which swirls about a longitudinal axis x of the pre-combustion chamber Sr inside the pre-combustion chamber Sr.
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公开(公告)号：US20150028239A1
公开(公告)日：2015-01-29
申请号：US14360882
申请日：2012-11-19
CPC分类号： F02M61/042 , F02B1/04 , F02B19/108 , F02B19/12 , F02B23/08 , F02B2275/22 , F02B2275/34 , F02D19/024 , F02F2001/245 , F02M21/0239 , F02M21/0269 , F02M21/0275 , F16K31/06 , Y02T10/125 , Y02T10/32
摘要： In an auxiliary chamber gas supplying device for a gas engine including an auxiliary chamber gas supply path through which fuel gas is supplied to an auxiliary chamber, the auxiliary chamber gas supply path is connected to a fuel gas supply source through a solenoid valve, and when the solenoid valve is opened, the fuel gas, in an amount corresponding to an opened period of the solenoid valve, is supplied from the fuel gas supply source to the auxiliary chamber through the auxiliary chamber gas supply path, and the opened period of the solenoid valve is set in such a manner that a predetermined amount of fuel gas is supplied to the auxiliary chamber, and a restriction unit that extends the opened period of the solenoid valve is formed in the auxiliary chamber gas supply path.
摘要翻译： 在用于燃气发动机的辅助室气体供给装置中，辅助室气体供给路径通过燃料气体供给到辅助室，辅助室气体供给路径通过电磁阀与燃料气体供给源连接， 电磁阀打开，对应于电磁阀打开期间的燃料气体通过辅助室气体供给路径从燃料气体供给源供给辅助室，螺线管的打开期间 阀被设定为向辅助室供给预定量的燃料气体，并且在辅助室气体供给路径中形成有延长电磁阀的打开期间的限制单元。
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