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    Direct fuel injection engine
    1.
    发明授权
    Direct fuel injection engine 失效
    直接燃油喷射发动机

    公开(公告)号：US06851408B2

    公开(公告)日：2005-02-08

    申请号：US10694013

    申请日：2003-10-28

    申请人： Isamu Hotta ,  Koji Hiraya ,  Masaaki Kubo ,  Akihiko Kakuho

    发明人： Isamu Hotta ,  Koji Hiraya ,  Masaaki Kubo ,  Akihiko Kakuho

    IPC分类号： F02B17/00 ,  F02B23/10 ,  F02D13/02 ,  F02D41/30

    CPC分类号： F02D13/0215 ,  F02B17/005 ,  F02B23/101 ,  F02D41/3029 ,  Y02T10/12 ,  Y02T10/125 ,  Y02T10/18

    摘要： An direct fuel injection spark ignition internal combustion engine comprises a fuel injection valve arranged at a substantially center part of an upper are of a combustion chamber, and a piston having a crown surface with a cavity shaped so that a center axis of a substantially conical-shaped fuel stream injected from the fuel injection valve is substantially coincident with a center axis of the piston. In a low-load stratified combustion operating region when spark ignition is executed, the fuel injection angle is increased to form a first combustible air-fuel mixture before the fuel stream collides against the cavity of the piston crown surface. In a high-load stratified combustion operating region, the fuel injection angle is reduced to form a second combustible air-fuel mixture after the fuel stream collides against the cavity of the piston crown surface.

    摘要翻译： 直接燃油喷射火花点火内燃机包括配置在燃烧室的上部的大致中心部分处的燃料喷射阀，以及具有冠形表面的活塞，其具有形状为使得基本上圆锥形的中心轴线的中心轴线， 从燃料喷射阀喷射的形状的燃料流基本上与活塞的中心轴线重合。 在执行火花点火时的低负荷分层燃烧操作区域中，在燃料流碰撞活塞冠表面的空腔之前，燃料喷射角度增加以形成第一可燃空气燃料混合物。 在高负荷分层燃烧操作区域中，在燃料流与活塞冠表面的空腔相撞之后，燃料喷射角度减小以形成第二可燃空气 - 燃料混合物。

    Direct fuel injection engine
    2.
    发明授权
    Direct fuel injection engine 失效
    直接燃油喷射发动机

    公开(公告)号：US06814046B1

    公开(公告)日：2004-11-09

    申请号：US10788324

    申请日：2004-03-01

    申请人： Koji Hiraya ,  Eiji Takahashi ,  Hirofumi Tsuchida ,  Isamu Hotta ,  Akihiko Kakuho

    发明人： Koji Hiraya ,  Eiji Takahashi ,  Hirofumi Tsuchida ,  Isamu Hotta ,  Akihiko Kakuho

    IPC分类号： F02B300

    CPC分类号： F02D13/0215 ,  F02B17/005 ,  F02B23/101 ,  F02B2075/125 ,  F02B2275/18 ,  F02D37/02 ,  F02D41/3023 ,  F02D41/3029 ,  F02D41/401 ,  F02D2041/001 ,  Y02T10/12 ,  Y02T10/123 ,  Y02T10/125 ,  Y02T10/18 ,  Y02T10/44

    摘要： A direct fuel injection engine basically comprises a combustion chamber, a piston with a cavity, a fuel injection valve, a spark plug and a control unit. The fuel injection valve is configured and arranged to directly inject a fuel stream into the combustion chamber in a substantially constant hollow circular cone shape in a stratified combustion region. The control unit is configured to ignite a first air-fuel mixture formed directly after the fuel stream is injected and prior to a majority of the fuel stream striking the cavity when the direct fuel injection engine is operating in a low-load stratified combustion region, and to ignite a second air-fuel mixture formed after a majority of the fuel stream is guided by the cavity toward an upper portion of the combustion chamber above the cavity when the direct fuel injection engine is operating in a high-load stratified combustion region.

    摘要翻译： 直接燃料喷射发动机基本上包括燃烧室，具有空腔的活塞，燃料喷射阀，火花塞和控制单元。 燃料喷射阀被构造和布置成在分层燃烧区域中以基本恒定的中空圆锥形状将燃料流直接喷射到燃烧室中。 控制单元被配置为点燃燃料流被注入之后直接形成的第一空气 - 燃料混合物，并且当直接燃料喷射发动机在低负荷分层燃烧区域中操作时，大部分燃料流冲击空腔之前， 并且当所述直接燃料喷射发动机在高负荷分层燃烧区域中操作时，在所述燃料流的大部分被所述空腔朝向所述空腔上方的所述燃烧室的上部引导时，点燃形成的第二空气 - 燃料混合物。

    Internal combustion engine with a precombustion chamber
    6.
    发明授权
    Internal combustion engine with a precombustion chamber 失效
    具有预燃室的内燃机

    公开(公告)号：US07584739B2

    公开(公告)日：2009-09-08

    申请号：US11637930

    申请日：2006-12-13

    申请人： Eiji Takahashi ,  Toru Noda ,  Akihiko Kakuho ,  Isamu Hotta ,  Koichi Ashida

    发明人： Eiji Takahashi ,  Toru Noda ,  Akihiko Kakuho ,  Isamu Hotta ,  Koichi Ashida

    IPC分类号： F02B19/10 ,  F02B19/12

    CPC分类号： F02D13/0265 ,  F02B19/12 ,  F02B23/101 ,  F02B23/104 ,  Y02T10/125 ,  Y02T10/18

    摘要： An internal combustion engine includes neighboring main and auxiliary combustion chambers that are separated by a partition wall including a communicating passage. Ignition of an air/fuel mixture in the auxiliary combustion chamber produces a fuel torch that is jetted into an air/fuel mixture in the main combustion chamber. Under a predetermined operation condition, timing for opening an intake valve is retarded relative to both the timing for closing an exhaust valve and the timing for top dead center of a piston on an exhaust stroke. By retarding the timing for opening the intake valve, residual gas in the auxiliary combustion that is left over from a previous cycle can be reduced.

    摘要翻译： 内燃机包括由包括连通通道的分隔壁隔开的相邻的主燃烧室和辅助燃烧室。 在辅助燃烧室中点燃空气/燃料混合物产生喷射到主燃烧室中的空气/燃料混合物中的燃料喷枪。 在预定操作条件下，相对于关闭排气门的时间和排气冲程上的活塞的上止点的定时两者都延迟了用于打开进气门的定时。 通过延迟打开进气门的时间，可以减少从先前循环留下的辅助燃烧中的残留气体。

    Internal combustion engine with a precombustion chamber
    8.
    发明申请
    Internal combustion engine with a precombustion chamber 失效
    具有预燃室的内燃机

    公开(公告)号：US20070151540A1

    公开(公告)日：2007-07-05

    申请号：US11637930

    申请日：2006-12-13

    申请人： Eiji Takahashi ,  Toru Noda ,  Akihiko Kakuho ,  Isamu Hotta ,  Koichi Ashida

    发明人： Eiji Takahashi ,  Toru Noda ,  Akihiko Kakuho ,  Isamu Hotta ,  Koichi Ashida

    IPC分类号： F02B19/10 ,  F02B19/14

    CPC分类号： F02D13/0265 ,  F02B19/12 ,  F02B23/101 ,  F02B23/104 ,  Y02T10/125 ,  Y02T10/18

    摘要： An internal combustion engine includes neighboring main and auxiliary combustion chambers that are separated by a partition wall including a communicating passage. Ignition of an air/fuel mixture in the auxiliary combustion chamber produces a fuel torch that is jetted into an air/fuel mixture in the main combustion chamber. Under a predetermined operation condition, timing for opening an intake valve is retarded relative to both the timing for closing an exhaust valve and the timing for top dead center of a piston on an exhaust stroke. By retarding the timing for opening the intake valve, residual gas in the auxiliary combustion that is left over from a previous cycle can be reduced.

    摘要翻译： 内燃机包括由包括连通通道的分隔壁隔开的相邻的主燃烧室和辅助燃烧室。 在辅助燃烧室中点燃空气/燃料混合物产生喷射到主燃烧室中的空气/燃料混合物中的燃料喷枪。 在预定操作条件下，相对于关闭排气门的时间和排气冲程上的活塞的上止点的定时两者都延迟了用于打开进气门的定时。 通过延迟打开进气门的时间，可以减少从先前循环留下的辅助燃烧中的残留气体。

    Direct fuel injection engine
    10.
    发明申请
    Direct fuel injection engine 失效
    直接燃油喷射发动机

    公开(公告)号：US20050098145A1

    公开(公告)日：2005-05-12

    申请号：US10969339

    申请日：2004-10-21

    申请人： Hirofumi Tsuchida ,  Koji Hiraya ,  Isamu Hotta ,  Taisuke Shiraishi ,  Toshikazu Shiino

    发明人： Hirofumi Tsuchida ,  Koji Hiraya ,  Isamu Hotta ,  Taisuke Shiraishi ,  Toshikazu Shiino

    IPC分类号： F02B17/00 ,  F02B23/10 ,  F02B3/00

    CPC分类号： F02B17/005 ,  F02B23/101 ,  F02B2023/103 ,  Y02T10/125

    摘要： A direct fuel injection engine is provided that an appropriate stratified fuel-air mixture is formed to conduct good stratified combustion over a wide range of loads. The engine has a fuel injection valve that is arranged at an upper surface of the combustion chamber on or near the center reciprocation axis of the piston and oriented such that the injection center axis of the fuel stream injected therefrom is slanted with respect to the center reciprocation axis of the piston. The piston is disposed in the combustion chamber to move along a cylinder center axis. The piston has a top surface having a first outer cavity having a first cavity center axis, and a second inner cavity located in the outer cavity. The second inner cavity has a second cavity center axis offset from the cylinder center axis of the piston in a direction perpendicular to the cylinder center axis.

    摘要翻译： 提供了直接燃料喷射发动机，其形成适当的分层燃料 - 空气混合物以在宽范围的负载下进行良好的分层燃烧。 发动机具有燃料喷射阀，该燃料喷射阀布置在燃烧室的上表面处或活塞的中心往复运动轴线附近，并被定向成使得从其喷射的燃料流的喷射中心轴线相对于中心往复运动倾斜 活塞轴线。 活塞设置在燃烧室中以沿着气缸中心轴线移动。 所述活塞具有顶表面，所述顶表面具有第一外腔，所述第一外腔具有第一空腔中心轴线，所述第二内腔位于所述外腔中。 第二内腔具有在垂直于气缸中心轴线的方向上偏离活塞的气缸中心轴线的第二空腔中心轴线。