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公开(公告)号：US08151762B2
公开(公告)日：2012-04-10
申请号：US12504445
申请日：2009-07-16
申请人： Toshiaki Nishimoto , Tomomi Watanabe , Yoshiteru Nakayama , Tatsuya Fujikawa , Masahisa Yamakawa
发明人： Toshiaki Nishimoto , Tomomi Watanabe , Yoshiteru Nakayama , Tatsuya Fujikawa , Masahisa Yamakawa
IPC分类号： F02B19/04
CPC分类号： F02B23/104 , F02B2023/103 , Y02T10/125
摘要： Disclosed is a direct-injection spark-ignition engine designed to promote catalyst activation during cold engine operation. A fuel injection timing for a fuel injection period in an compression stroke (second fuel injection period F2) is set to allow a first fuel spray Ga injected from a first spray hole 40a to enter a cavity 34 in a piston crown surface 30, and allow a second fuel spray Gb to impinge against a region of the piston crown surface 30 located closer to an injector than the cavity 34, so as to cause the second fuel spray Gb having a lowered penetration force due to the impingement to be pulled toward the cavity 34 by a negative pressure generated in the cavity 34 as a result of passing of the first fuel spray Ga therethrough. The direct-injection spark-ignition engine can maximally hold an injected fuel spray around a spark plug to reliably stabilize a combustion state in a combustion mode for promoting catalyst activation during cold engine operation, while enhancing combustion efficiency in a homogenous combustion mode during normal engine operation.
摘要翻译： 公开了一种直喷式火花点火发动机，设计用于在冷发动机运行期间促进催化剂活化。 在压缩行程（第二燃料喷射期间F2）中的燃料喷射期间的燃料喷射正时被设定为允许从第一喷射孔40a喷射的第一燃料喷雾Ga进入活塞冠表面30中的空腔34，并且允许 第二燃料喷雾Gb撞击位于比腔34更靠近喷射器的活塞冠表面30的区域，以便使得由于冲击而具有降低的穿透力的第二燃料喷雾Gb被拉向空腔 34由于第一燃料喷雾Ga通过而在空腔34中产生的负压。 直喷式火花点火发动机可以最大限度地保持火花塞周围的喷射燃料喷雾，以在燃烧模式下可靠地稳定燃烧状态，以促进冷机发动机运行期间的催化剂活化，同时在正常发动机中提高均质燃烧模式下的燃烧效率 操作。
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12.发明授权公开(公告)号：US08196560B2
公开(公告)日：2012-06-12
申请号：US12410076
申请日：2009-03-24
CPC分类号： F02B23/104 , F02B17/005 , F02B2023/103 , F02B2023/106 , F02B2075/125 , F02D13/0238 , F02M61/1813 , Y02T10/123 , Y02T10/125 , Y02T10/146
摘要： A multi-hole injector directly injects fuel into a combustion chamber. Intake air is introduced into the combustion chamber through intake ports to provide tumble flow in the combustion chamber. A cavity is formed in a part of the top surface of a piston which is eccentric to the exhaust side. In the intake stroke, fuel injection ends in a downstroke of a piston. When the crank angle is 100 degrees after the top dead center in the intake stroke at which the fuel injection ends, a most downward lower spray collides with a part of the top surface of the piston which ranges on the intake side from the edge on the exhaust side of the cavity. A most upward upper spray does not come into contact with a spark plug. Thus, the fuel injection can enhance the tumble flow to promote homogeneous dispersion of fuel-air mixture in the combustion chamber.
摘要翻译： 多孔喷射器将燃料直接喷射到燃烧室中。 吸入空气通过进气口引入燃烧室，以在燃烧室中提供滚筒流。 在与排气侧偏心的活塞的上表面的一部分中形成空腔。 在进气冲程中，燃料喷射以活塞的下冲程结束。 当燃料喷射结束的进气行程中的上止点之后的曲柄角为100度时，最下面的下喷射与活塞顶表面的一部分在入口侧的边缘上相撞 空腔的排气侧。 最向上的上喷雾器不会与火花塞接触。 因此，燃料喷射可以增强滚筒流动，以促进燃料 - 空气混合物在燃烧室中的均匀分散。
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公开(公告)号：US20090319156A1
公开(公告)日：2009-12-24
申请号：US12485742
申请日：2009-06-16
CPC分类号： F02B23/104 , F02B31/04 , F02B2023/085 , F02B2023/108 , Y02T10/125
摘要： An internal combustion engine is described herein. The engine may include a combustion chamber having a pair of intake ports arranged at one side, and an exhaust port arranged at the other side. The engine may also include a fuel injector configured to inject fuel into said combustion chamber from a side of said intake ports toward a side of said exhaust port, a variable flow restrictor capable of making flow resistance of said second intake port greater than flow resistance of said first intake port, a first spark plug arranged on a ceiling of the chamber and having its spark gap in the proximity of a center portion of said ceiling, and a second spark plug arranged on said ceiling and having its spark gap which is positioned closer to said first intake port in the axial direction of said crankshaft than said first spark plug.
摘要翻译： 这里描述了内燃机。 发动机可以包括具有一侧设置的一对进气口的燃烧室和布置在另一侧的排气口。 发动机还可以包括燃料喷射器，该燃料喷射器被配置为从所述进气口侧朝向所述排气口的侧面将燃料喷射到所述燃烧室中，所述可变流量限制器能够使所述第二进气口的流动阻力大于流动阻力 所述第一进气口，布置在所述室的天花板上并且在所述天花板的中心部分附近具有火花隙的第一火花塞和布置在所述天花板上并具有位于更靠近的火花隙的第二火花塞 到所述第一进气口在所述曲轴的轴向方向上比所述第一火花塞。
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14.发明申请公开(公告)号：US20090235897A1
公开(公告)日：2009-09-24
申请号：US12410076
申请日：2009-03-24
IPC分类号： F02B5/00
CPC分类号： F02B23/104 , F02B17/005 , F02B2023/103 , F02B2023/106 , F02B2075/125 , F02D13/0238 , F02M61/1813 , Y02T10/123 , Y02T10/125 , Y02T10/146
摘要： A multi-hole injector directly injects fuel into a combustion chamber. Intake air is introduced into the combustion chamber through intake ports to provide tumble flow in the combustion chamber. A cavity is formed in a part of the top surface of a piston which is eccentric to the exhaust side. In the intake stroke, fuel injection ends in a downstroke of a piston. When the crank angle is 100 degrees after the top dead center in the intake stroke at which the fuel injection ends, a most downward lower spray collides with a part of the top surface of the piston which ranges on the intake side from the edge on the exhaust side of the cavity. A most upward upper spray does not come into contact with a spark plug. Thus, the fuel injection can enhance the tumble flow to promote homogeneous dispersion of fuel-air mixture in the combustion chamber.
摘要翻译： 多孔喷射器将燃料直接喷射到燃烧室中。 吸入空气通过进气口引入燃烧室，以在燃烧室中提供滚筒流。 在与排气侧偏心的活塞的上表面的一部分中形成空腔。 在进气冲程中，燃料喷射以活塞的下冲程结束。 当燃料喷射结束的进气行程中的上止点之后的曲柄角为100度时，最下面的下喷射与活塞顶表面的一部分在入口侧的边缘上相撞 空腔的排气侧。 最向上的上喷雾器不会与火花塞接触。 因此，燃料喷射可以增强滚筒流动，以促进燃料 - 空气混合物在燃烧室中的均匀分散。
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公开(公告)号：US07360531B2
公开(公告)日：2008-04-22
申请号：US11520700
申请日：2006-09-14
CPC分类号： F02B31/085 , F02B23/08 , F02B23/101 , F02B2023/085 , F02B2031/006 , Y02T10/125 , Y02T10/146
摘要： This invention relates to a combustion chamber structure for a spark-ignition engine, which comprises a combustion chamber defined between a bottom surface of a cylinder head and a top surface of a piston in such a manner that the bottom surface of the cylinder head serves as a ceiling wall thereof, and a spark plug having a sparking end protruding from the ceiling wall into the combustion chamber. In this combustion chamber structure, when the piston is at a top dead center, a principal space of the combustion chamber is comprised of a first combustion space around the sparking end of the spark plug and a second combustion space around a circumference of a cylinder bore. Further, the first combustion space and the second combustion space are communicated with each other through a small interspace zone where an interspace between the ceiling wall and the top surface of the piston is narrowed. The combustion chamber structure makes it possible to increase compression ratio in a practically effective manner.
摘要翻译： 本发明涉及一种用于火花点火发动机的燃烧室结构，该燃烧室结构包括燃烧室，该燃烧室限定在气缸盖的底表面和活塞的顶表面之间，使得气缸盖的底表面用作 其顶壁和火花塞具有从顶壁向燃烧室突出的火花端。 在该燃烧室结构中，当活塞处于上止点时，燃烧室的主要空间由火花塞的火花端周围的第一燃烧空间和围绕气缸孔周围的第二燃烧空间 。 此外，第一燃烧空间和第二燃烧空间通过在顶壁与活塞顶面之间的间隙变窄的小间隙区域彼此连通。 燃烧室结构使得可以以实际有效的方式增加压缩比。
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公开(公告)号：US20070227503A1
公开(公告)日：2007-10-04
申请号：US11727890
申请日：2007-03-28
申请人： Mitsuo Hitomi , Noriyuki Iwata , Masahisa Yamakawa , Toshiaki Nishimoto , Takashi Yohso , Takayoshi Hayashi
发明人： Mitsuo Hitomi , Noriyuki Iwata , Masahisa Yamakawa , Toshiaki Nishimoto , Takashi Yohso , Takayoshi Hayashi
CPC分类号： F02P5/151 , F02D13/0223 , F02D13/0269 , F02D15/04 , F02D37/02 , F02D41/0002 , F02D41/3029 , F02D41/402 , F02D2041/001 , F02P5/1512 , Y02T10/142 , Y02T10/42 , Y02T10/44 , Y02T10/46
摘要： Disclosed is a spark-ignition gasoline engine, which comprises control means operable, when an engine operation zone is a high-load operation zone including a WOT region within at least a low speed range, to adjust a closing timing of an intake valve in such a manner as to maintain an effective compression ratio at 13 or more, and retard an ignition timing to a point within a predetermined stroke range just after a top dead center of a compression stroke, wherein the effective compression ratio is calculated based on an intake-valve closing timing defined by a valve lift amount of 1 mm. The present invention can provide a spark-ignition gasoline engine having both a low-cost performance and a high engine-power performance even in a high-load operation zone (particularly WOT region) in a low speed range.
摘要翻译： 公开了一种火花点火汽油发动机，其包括控制装置，当发动机操作区域是包括至少低速范围内的WOT区域的高负荷运行区域时，可以调节进气门的关闭正时 将有效压缩比保持在13以上的方式，并将点火正时延迟到刚刚在压缩冲程的上止点之后的预定行程范围内的点，其中基于进气压力计算有效压缩比， 阀门关闭时间由阀门升程量为1mm定义。 本发明可以提供即使在低负荷运行区域（特别是WOT区域）中也具有低成本性能和高发动机功率性能的点火点火汽油机。
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公开(公告)号：US07784443B2
公开(公告)日：2010-08-31
申请号：US12362645
申请日：2009-01-30
申请人： Mitsuo Hitomi , Noriyuki Iwata , Masahisa Yamakawa , Toshiaki Nishimoto , Takashi Yohso , Takayoshi Hayashi
发明人： Mitsuo Hitomi , Noriyuki Iwata , Masahisa Yamakawa , Toshiaki Nishimoto , Takashi Yohso , Takayoshi Hayashi
CPC分类号： F02P5/151 , F02D13/0223 , F02D13/0269 , F02D15/04 , F02D37/02 , F02D41/0002 , F02D41/3029 , F02D41/402 , F02D2041/001 , F02P5/1512 , Y02T10/142 , Y02T10/42 , Y02T10/44 , Y02T10/46
摘要： A spark-ignition gasoline engine having at least a spark plug, the engine including an engine body having a geometrical compression ratio set at 14 or more, and an intake valve and an exhaust valve provided, respectively, in intake and exhaust ports connected to each of a plurality of cylinders of the engine body. The intake and exhaust valves are adapted to open and close corresponding respective ones of the intake and exhaust ports. The engine further includes an operation-state detector adapted to detect an operation state of the engine body and a control system adapted, based on detection of the operation-state detector, to perform at least an adjustment control of an ignition timing of the spark plug, the control system being operable, when an engine operation zone is a high-load operation zone including a wide open throttle region within at least a low speed range, to retard the ignition timing to a point within a predetermined stroke range just after a top dead center of a compression stroke.
摘要翻译： 具有至少火花塞的火花点火汽油机，所述发动机包括具有设定在14以上的几何压缩比的发动机主体，以及分别设置在连接到每个的进气和排气口的进气门和排气门 的发动机主体的多个气缸。 进气门和排气门适于打开和关闭相应的进气口和排气口。 发动机还包括适于检测发动机主体的运行状态的操作状态检测器和控制系统，该控制系统基于操作状态检测器的检测，至少对火花塞的点火正时进行调节控制 所述控制系统可操作，当发动机操作区域是包括至少低速范围内的大开度节流区域的高负载运行区域时，将点火正时延迟到正好在顶部之后的预定行程范围内的点 压缩冲程的死点。
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公开(公告)号：US20070056556A1
公开(公告)日：2007-03-15
申请号：US11520700
申请日：2006-09-14
CPC分类号： F02B31/085 , F02B23/08 , F02B23/101 , F02B2023/085 , F02B2031/006 , Y02T10/125 , Y02T10/146
摘要： This invention relates to a combustion chamber structure for a spark-ignition engine, which comprises a combustion chamber defined between a bottom surface of a cylinder head and a top surface of a piston in such a manner that the bottom surface of the cylinder head serves as a ceiling wall thereof, and a spark plug having a sparking end protruding from the ceiling wall into the combustion chamber. In this combustion chamber structure, when the piston is at a top dead center, a principal space of the combustion chamber is comprised of a first combustion space around the sparking end of the spark plug and a second combustion space around a circumference of a cylinder bore. Further, the first combustion space and the second combustion space are communicated with each other through a small interspace zone where an interspace between the ceiling wall and the top surface of the piston is narrowed. The combustion chamber structure makes it possible to increase compression ratio in a practically effective manner.
摘要翻译： 本发明涉及一种用于火花点火发动机的燃烧室结构，该燃烧室结构包括燃烧室，该燃烧室限定在气缸盖的底表面和活塞的顶表面之间，使得气缸盖的底表面用作 其顶壁和火花塞具有从顶壁向燃烧室突出的火花端。 在该燃烧室结构中，当活塞处于上止点时，燃烧室的主要空间由火花塞的火花端周围的第一燃烧空间和围绕气缸孔周围的第二燃烧空间 。 此外，第一燃烧空间和第二燃烧空间通过在顶壁与活塞顶面之间的间隙变窄的小间隙区域彼此连通。 燃烧室结构使得可以以实际有效的方式增加压缩比。
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公开(公告)号：US06928980B2
公开(公告)日：2005-08-16
申请号：US10944710
申请日：2004-09-21
IPC分类号： F02B75/18 , F02B75/20 , F02D13/02 , F02D41/02 , F02D41/30 , F02F1/24 , F02F1/42 , F02M25/07 , F02B75/02 , F02M35/10
CPC分类号： F02D13/0276 , F02B75/20 , F02B2075/1816 , F02D41/0065 , F02D41/3064 , F02F1/4214 , F02F2001/245 , F02M26/01 , F02M26/40 , F02M26/43 , Y02T10/18
摘要： A control device switches an engine between normal operation mode and special operation mode. In the normal operation mode, an independent cylinder configuration is formed to produce combustion independently in individual cylinders. In the special operation mode, a two-cylinder interconnect configuration is formed so that burned gas discharged from preceding cylinders currently in an exhaust stroke is introduced into following cylinders currently in an intake stroke through intercylinder gas channels, a lean mixture having a high air-fuel ratio is combusted in the preceding cylinders, and a mixture produced by supplying fuel to the burned gas is combusted in the following cylinders. When the engine is switched between the special operation mode and the normal operation mode, the control device selects transitional operation mode, in which the two-cylinder interconnect configuration is formed, and interrupts combustion in the preceding cylinders while producing combustion in the following cylinders by compression ignition.
摘要翻译： 控制装置在正常操作模式和特殊操作模式之间切换发动机。 在正常操作模式中，形成独立的气缸结构以在各个气缸中独立地产生燃烧。 在特殊操作模式中，形成双缸互连配置，使从当前处于排气行程的先前汽缸排出的燃烧气体通过气缸内气体通道引入目前处于进气冲程的后续汽缸中， 燃料比在先前的气缸中燃烧，并且通过向燃烧气体供给燃料而产生的混合物在随后的气缸中燃烧。 当发动机在特殊操作模式和正常操作模式之间切换时，控制装置选择形成双气缸互连配置的过渡操作模式，并且在随后的气缸中产生燃烧的同时中断前一个气缸中的燃烧， 压缩点火。
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公开(公告)号：US20050066918A1
公开(公告)日：2005-03-31
申请号：US10944710
申请日：2004-09-21
IPC分类号： F02B75/18 , F02B75/20 , F02D13/02 , F02D41/02 , F02D41/30 , F02F1/24 , F02F1/42 , F02M25/07 , F01L1/34
CPC分类号： F02D13/0276 , F02B75/20 , F02B2075/1816 , F02D41/0065 , F02D41/3064 , F02F1/4214 , F02F2001/245 , F02M26/01 , F02M26/40 , F02M26/43 , Y02T10/18
摘要： A control device switches an engine between normal operation mode and special operation mode. In the normal operation mode, an independent cylinder configuration is formed to produce combustion independently in individual cylinders. In the special operation mode, a two-cylinder interconnect configuration is formed so that burned gas discharged from preceding cylinders currently in an exhaust stroke is introduced into following cylinders currently in an intake stroke through intercylinder gas channels, a lean mixture having a high air-fuel ratio is combusted in the preceding cylinders, and a mixture produced by supplying fuel to the burned gas is combusted in the following cylinders. When the engine is switched between the special operation mode and the normal operation mode, the control device selects transitional operation mode, in which the two-cylinder interconnect configuration is formed, and interrupts combustion in the preceding cylinders while producing combustion in the following cylinders by compression ignition.
摘要翻译： 控制装置在正常操作模式和特殊操作模式之间切换发动机。 在正常操作模式中，形成独立的气缸结构以在各个气缸中独立地产生燃烧。 在特殊操作模式中，形成双缸互连配置，使从当前处于排气行程的先前汽缸排出的燃烧气体通过气缸内气体通道引入目前处于进气冲程的后续汽缸中， 燃料比在先前的气缸中燃烧，并且通过向燃烧气体供应燃料而产生的混合物在随后的气缸中燃烧。 当发动机在特殊操作模式和正常操作模式之间切换时，控制装置选择形成双气缸互连配置的过渡操作模式，并且在随后的气缸中产生燃烧的同时中断前一个气缸中的燃烧， 压缩点火。
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