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公开(公告)号：US20050098145A1
公开(公告)日：2005-05-12
申请号：US10969339
申请日：2004-10-21
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。
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公开(公告)号：US07028662B2
公开(公告)日：2006-04-18
申请号：US10969339
申请日：2004-10-21
IPC分类号： F02B19/08
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。
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公开(公告)号：US06912989B2
公开(公告)日：2005-07-05
申请号：US10808302
申请日：2004-03-25
IPC分类号： F02B23/10 , F02B75/12 , F02D41/06 , F02D41/14 , F02D41/18 , F02D41/30 , F02D41/34 , F02D41/40 , F02M45/04 , F02B3/02 , F02F3/26
CPC分类号： F02D41/3029 , F02B23/101 , F02B23/104 , F02B2075/125 , F02D41/009 , F02D41/062 , F02D41/1454 , F02D41/18 , F02D41/3076 , F02D41/401 , F02D41/403 , F02D2200/0602 , F02D2200/602 , F02D2250/18 , F02M45/04 , Y02T10/123 , Y02T10/125 , Y02T10/44
摘要： A fuel injection control device for a direct fuel injection engine is configured to selectively control a fuel injection valve, which is configured and arranged to directly inject a first fuel stream per cycle into a combustion chamber, to use a first fuel injection timing when the controller determines that a stratified air-fuel mixture will be difficult to form during a second fuel injection timing based on a determination of an engine operation parameter by at least one sensor. The first fuel injection timing is set to control the injection valve to inject the first fuel stream during an intake stroke while a piston in the combustion chamber is approximately at an intake top dead center position such that a majority of the first fuel stream injected from the fuel injection valve is received inside a cavity formed on the piston.
摘要翻译： 一种用于直接燃料喷射发动机的燃料喷射控制装置被配置为选择性地控制燃料喷射阀，该燃料喷射阀被构造和布置为将每个循环的第一燃料流直接喷射到燃烧室中，以在控制器中使用第一燃料喷射正时 确定在基于由至少一个传感器确定发动机操作参数的第二燃料喷射正时期间难以形成分层的空气 - 燃料混合物。 第一燃料喷射正时被设定为控制喷射阀在进气冲程期间喷射第一燃料流，同时燃烧室中的活塞大致处于进气上止点位置，使得大部分从第一燃料流喷射的第一燃料流 燃料喷射阀被容纳在形成在活塞上的腔内。
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公开(公告)号：US07073480B2
公开(公告)日：2006-07-11
申请号：US11246208
申请日：2005-10-11
申请人： Taisuke Shiraishi , Koji Hiraya , Isamu Hotta , Daisuke Tanaka
发明人： Taisuke Shiraishi , Koji Hiraya , Isamu Hotta , Daisuke Tanaka
IPC分类号： F02B17/00
CPC分类号： F02P5/1502 , F02D41/024 , F02D41/3023 , F02D2200/0602 , Y02T10/26 , Y02T10/46
摘要： An exhaust emission control apparatus for an internal combustion engine includes a fuel injection valve placed substantially at a midpoint above a combustion chamber of the engine; a piston having an outer cavity formed substantially in a midsection of an upper surface of the piston and an inner cavity formed in a bottom surface of the outer cavity; an ignition plug placed in a region right above the outer cavity; an exhaust purifying catalyst provided in an exhaust passage of the engine; and a controller. This controller is configured to carry out a stratified charge combustion when a temperature rise for the exhaust purifying catalyst is required, by forming air-fuel mixture which is richer than stoichiometric ratio and is able to be ignited by the ignition plug, within the outer cavity and in an area substantially right above the outer cavity, from a fuel injected through the fuel injection valve.
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5.发明申请公开(公告)号：US20060075741A1
公开(公告)日：2006-04-13
申请号：US11246208
申请日：2005-10-11
申请人： Taisuke Shiraishi , Koji Hiraya , Isamu Hotta , Daisuke Tanaka
发明人： Taisuke Shiraishi , Koji Hiraya , Isamu Hotta , Daisuke Tanaka
CPC分类号： F02P5/1502 , F02D41/024 , F02D41/3023 , F02D2200/0602 , Y02T10/26 , Y02T10/46
摘要： An exhaust emission control apparatus for an internal combustion engine includes a fuel injection valve placed substantially at a midpoint above a combustion chamber of the engine; a piston having an outer cavity formed substantially in a midsection of an upper surface of the piston and an inner cavity formed in a bottom surface of the outer cavity; an ignition plug placed in a region right above the outer cavity; an exhaust purifying catalyst provided in an exhaust passage of the engine; and a controller. This controller is configured to carry out a stratified charge combustion when a temperature rise for the exhaust purifying catalyst is required, by forming air-fuel mixture which is richer than stoichiometric ratio and is able to be ignited by the ignition plug, within the outer cavity and in an area substantially right above the outer cavity, from a fuel injected through the fuel injection valve.
摘要翻译： 一种用于内燃机的废气排放控制装置，包括基本上位于发动机的燃烧室上方的中点处的燃料喷射阀， 具有基本上形成在所述活塞的上表面的中间部分的外腔的活塞和形成在所述外腔的底表面中的内腔; 放置在所述外腔正上方的区域中的火花塞; 设置在发动机的排气通路内的排气净化催化剂; 和控制器。 该控制器被配置为当需要用于排气净化催化剂的温度升高时，通过形成比化学计量比更丰富并且能够被火花塞点燃的空气 - 燃料混合物在外腔内进行分层充气燃烧 并且在基本上位于外腔正上方的区域中，从通过燃料喷射阀喷射的燃料。
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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。
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公开(公告)号：US07086378B2
公开(公告)日：2006-08-08
申请号：US10990957
申请日：2004-11-18
申请人： Daisuke Tanaka , Koji Hiraya , Isamu Hotta , Hirofumi Tsuchida
发明人： Daisuke Tanaka , Koji Hiraya , Isamu Hotta , Hirofumi Tsuchida
IPC分类号： F02B3/02
CPC分类号： F02B23/101 , Y02T10/125
摘要： A direct fuel injection internal combustion engine includes a fuel injector arranged above a center portion of the piston and positioned higher than a combustion chamber upper surface of a cylinder head. The cylinder head includes a recess portion in which a tip of the fuel injector is disposed in a cross sectional view of the cylinder head in a plane perpendicular to a fuel injection center axis. The recess portion is provided with a channel extending longitudinally away from the tip of the fuel injector configured and arranged to reduce negative pressure within the recess portion. The channel is oriented in such a direction as to avoid the interference between the channel and other parts of the cylinder head. When the fuel injector is a multi-hole fuel injector, the channel can be oriented toward a direction along a centerline between two adjacent injection vents of the fuel injector.
摘要翻译： 直接燃料喷射内燃机包括布置在活塞的中心部分上方并位于高于气缸盖的燃烧室上表面的燃料喷射器。 气缸盖包括凹部，燃料喷射器的前端在与燃料喷射中心轴线垂直的平面中在气缸盖的横截面视图中设置。 所述凹部设置有纵向延伸远离所述燃料喷射器的末端的通道，所述末端构造和布置成减小所述凹部内的负压。 通道朝向避免通道与气缸盖的其他部分之间的干涉的方向。 当燃料喷射器是多孔燃料喷射器时，通道可以朝向沿燃料喷射器的两个相邻喷射通气口之间的中心线的方向。
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公开(公告)号：US20050139191A1
公开(公告)日：2005-06-30
申请号：US10990957
申请日：2004-11-18
申请人： Daisuke Tanaka , Koji Hiraya , Isamu Hotta , Hirofumi Tsuchida
发明人： Daisuke Tanaka , Koji Hiraya , Isamu Hotta , Hirofumi Tsuchida
CPC分类号： F02B23/101 , Y02T10/125
摘要： A direct fuel injection internal combustion engine includes a fuel injector arranged above a center portion of the piston and positioned higher than a combustion chamber upper surface of a cylinder head. The cylinder head includes a recess portion in which a tip of the fuel injector is disposed in a cross sectional view of the cylinder head in a plane perpendicular to a fuel injection center axis. The recess portion is provided with a channel extending longitudinally away from the tip of the fuel injector configured and arranged to reduce negative pressure within the recess portion. The channel is oriented in such a direction as to avoid the interference between the channel and other parts of the cylinder head. When the fuel injector is a multi-hole fuel injector, the channel can be oriented toward a direction along a centerline between two adjacent injection vents of the fuel injector.
摘要翻译： 直接燃料喷射内燃机包括布置在活塞的中心部分上方并位于高于气缸盖的燃烧室上表面的燃料喷射器。 气缸盖包括凹部，燃料喷射器的前端在与燃料喷射中心轴线垂直的平面中在气缸盖的横截面视图中设置。 所述凹部设置有纵向延伸远离所述燃料喷射器的末端的通道，所述末端构造和布置成减小所述凹部内的负压。 通道朝向避免通道与气缸盖的其他部分之间的干涉的方向。 当燃料喷射器是多孔燃料喷射器时，通道可以朝向沿燃料喷射器的两个相邻喷射通气口之间的中心线的方向。
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公开(公告)号：US07334573B2
公开(公告)日：2008-02-26
申请号：US11684862
申请日：2007-03-12
CPC分类号： F02D41/006 , F02D13/0207 , F02D13/023 , F02D13/0249 , F02D13/0265 , F02D13/0269 , F02D15/02 , F02D41/0052 , F02D41/0065 , F02D2041/001 , F02M26/01 , F02M26/21 , Y02T10/142 , Y02T10/47
摘要： A NOx emission reduction apparatus includes high-temperature EGR gas supply means for supplying a high-temperature EGR gas into an engine cylinder, low-temperature EGR gas supply means for supplying a low-temperature EGR gas into the engine cylinder and very-low-load operation control means for, as an engine load decreases in a very-low-load range, increasing an EGR rate of the high-temperature EGR gas and decreasing an EGR rate of the low-temperature EGR gas for stable engine operations and NOx emission reduction.
摘要翻译： NOx排放减少装置包括用于将高温EGR气体供应到发动机气缸中的高温EGR气体供给装置，用于将低温EGR气体供应到发动机气缸中的低温EGR气体供给装置， 负载运行控制装置，用于随着发动机负荷在极低负载范围内减小，增加高温EGR气体的EGR率并降低用于稳定的发动机运转和NOx排放的低温EGR气体的EGR率 减少。
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10.发明申请公开(公告)号：US20110005496A1
公开(公告)日：2011-01-13
申请号：US12866906
申请日：2009-02-19
CPC分类号： F02D39/08 , F02D15/02 , F02D35/027 , F02D39/06 , F02D41/047 , F02D41/10 , F02D41/3023 , F02D41/3029 , F02D41/401 , F02D41/402 , Y02T10/44
摘要： A control apparatus is provided for a four stroke cylinder direct-injection internal combustion engine having a cylinder and a piston disposed within the cylinder. The control apparatus includes a variable compression ratio mechanism for variably controlling the engine compression ratio by changing the top dead center position of the piston and a fuel injection device for injecting fuel directly into the cylinder. When the actual compression ratio of the engine is higher than a target compression ratio, the variable compression ratio mechanism reduces the compression ratio, and in accordance with the reduction in the compression ratio, the fuel injecting device injects an intake fuel injection amount in the intake stroke and a compression fuel injection amount in the compression stroke, and the timing for starting the fuel injection in the compression stroke is retarded.
摘要翻译： 一种用于四冲程缸直喷式内燃机的控制装置，其具有设置在气缸内的气缸和活塞。 控制装置包括可变压缩比机构，用于通过改变活塞的上止点位置和用于将燃料直接喷射到气缸中的燃料喷射装置来可变地控制发动机压缩比。 当发动机的实际压缩比高于目标压缩比时，可变压缩比机构降低压缩比，并且根据压缩比的降低，燃料喷射装置在进气口喷射进气燃料喷射量 行程和压缩冲程中的压缩燃料喷射量，并且延迟了在压缩冲程中开始燃料喷射的定时。
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