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    • 1. 发明授权
    • Direct fuel injection engine
    • 直接燃油喷射发动机
    • US06832594B2
    • 2004-12-21
    • US10327925
    • 2002-12-26
    • Koji HirayaTomonori Urushihara
    • Koji HirayaTomonori Urushihara
    • F02B500
    • F02F3/26F02B23/101F02B23/104F02B2023/103F02B2075/125Y02T10/123Y02T10/125
    • A direct fuel injection engine has a fuel injection valve that injects fuel toward a cavity formed in a top of a piston, and a spark plug that ignites the fuel-air mixture resulting from the fuel injection. The direct fuel injection engine is configured to strengthen the penetration of the fuel streams, to improve the directionality of the fuel streams and to form in the cavity an agglomerate fuel-air mixture that is homogeneous and has uniform concentration. The cavity preferably has a bottom surface, a curved surface, and a flat surface. The fuel injection valve has a plurality of injection vents that spray solid-core fuel streams with angles formed between adjacent injection vents that are less than or equal to the spray angle of the fuel stream sprayed from each injection vent. The fuel streams form a combined fuel stream having a hollow circular cone shape.
    • 直接燃料喷射发动机具有燃料喷射阀,其向形成在活塞顶部的空腔喷射燃料,以及火花塞,其点燃由燃料喷射产生的燃料 - 空气混合物。 直接燃料喷射发动机被构造成加强燃料流的穿透,以改善燃料流的方向性,并且在空腔中形成均匀且具有均匀浓度的凝聚燃料 - 空气混合物。 空腔优选具有底面,弯曲表面和平坦表面。 燃料喷射阀具有多个喷射孔,其喷射在相邻喷射口之间形成的角度小于或等于从每个喷射出口喷射的燃料流的喷射角度的实芯燃料流。 燃料流形成具有中空圆锥形状的组合燃料流。
    • 2. 发明授权
    • Direct fuel injection internal combustion engine
    • 直燃式内燃机
    • US06739309B2
    • 2004-05-25
    • US10421874
    • 2003-04-24
    • Koji HirayaAkihiko KakuhoTomonori Urushihara
    • Koji HirayaAkihiko KakuhoTomonori Urushihara
    • F02F326
    • F02B23/10F02B2023/103F02B2075/125F02B2275/18Y02T10/123Y02T10/125
    • A direct fuel injection internal combustion engine comprises a combustion chamber, a fuel injection valve and a spark plug. The combustion chamber has a piston including an outer cavity located in a top surface of the piston and an inner cavity located in the outer cavity. The outer and inner cavities are substantially axially symmetrical about the reciprocation axis of the piston. The fuel injection valve is arranged adjacent the reciprocation axis of the piston to inject a fuel stream directly into the combustion chamber. The spark plug is arranged adjacent the reciprocation axis of the piston to ignite a fuel-air mixture inside the combustion chamber. The direct fuel injection internal combustion engine further comprises a control unit configured to vary at least one of frequency and start timings of the fuel injection valve based on an engine operating condition.
    • 直接燃料喷射内燃机包括燃烧室,燃料喷射阀和火花塞。 燃烧室具有包括位于活塞顶表面中的外腔和位于外腔中的内腔的活塞。 外腔和内腔基本上是关于活塞的往复运动轴线对称的。 燃料喷射阀邻近活塞的往复运动轴设置,以将燃料流直接喷入燃烧室。 火花塞被布置成邻近活塞的往复运动轴线点燃燃烧室内的燃料 - 空气混合物。 直接燃料喷射内燃机还包括控制单元,该控制单元被配置为基于发动机运行状态来改变燃料喷射阀的频率和开始定时中的至少一个。
    • 3. 发明申请
    • Direct fuel injection engine
    • 直接燃油喷射发动机
    • US20050045145A1
    • 2005-03-03
    • US10960966
    • 2004-10-12
    • Koji HirayaTomonori Urushihara
    • Koji HirayaTomonori Urushihara
    • F02B23/10F02B75/12F02F3/26
    • F02F3/26F02B23/101F02B23/104F02B2023/103F02B2075/125Y02T10/123Y02T10/125
    • A direct fuel injection engine has a fuel injection valve that injects fuel toward a cavity formed in a top of a piston, and a spark plug that ignites the fuel-air mixture resulting from the fuel injection. The direct fuel injection engine is configured to strengthen the penetration of the fuel streams, to improve the directionality of the fuel streams and to form in the cavity an agglomerate fuel-air mixture that is homogeneous and has uniform concentration. The cavity preferably has a bottom surface, a curved surface, and a flat surface. The fuel injection valve has a plurality of injection vents that spray solid-core fuel streams with angles formed between adjacent injection vents that are less than or equal to the spray angle of the fuel stream sprayed from each injection vent. The fuel streams form a combined fuel stream having a hollow circular cone shape.
    • 直接燃料喷射发动机具有燃料喷射阀,其向形成在活塞顶部的空腔喷射燃料,以及火花塞,其点燃由燃料喷射产生的燃料 - 空气混合物。 直接燃料喷射发动机被构造成加强燃料流的穿透,以改善燃料流的方向性,并且在空腔中形成均匀且具有均匀浓度的凝聚燃料 - 空气混合物。 空腔优选具有底面,弯曲表面和平坦表面。 燃料喷射阀具有多个喷射孔,其喷射在相邻喷射口之间形成的角度小于或等于从每个喷射出口喷射的燃料流的喷射角度的实芯燃料流。 燃料流形成具有中空圆锥形状的组合燃料流。
    • 4. 发明授权
    • Direct fuel injection engine
    • 直接燃油喷射发动机
    • US06672276B2
    • 2004-01-06
    • US10327924
    • 2002-12-26
    • Koji HirayaTomonori Urushihara
    • Koji HirayaTomonori Urushihara
    • F02F326
    • F02B23/101F02B23/104F02B2023/103F02B2075/125F02B2275/18F02F3/26Y02T10/123Y02T10/125
    • A direct fuel injection engine has a fuel injection valve that injects fuel toward a cavity formed in a top of a piston, and a spark plug that ignites the fuel-air mixture resulting from the fuel injection. The direct fuel injection engine is configured to strengthen the penetration of the fuel streams, to improve the directionality of the fuel streams and to stably form an agglomerate fuel-air mixture close to the spark plug. The cavity preferably has a bottom surface, a curved surface, and a flat surface. In a plan view taken along the center axis of the engine cylinder, cavity C is shaped like an ellipse whose foci are located at the tip of fuel injection valve and the spark discharge gap of spark plug, respectively. The fuel injection valve has a plurality of injection vents that spray solid-core fuel streams.
    • 直接燃料喷射发动机具有燃料喷射阀,其向形成在活塞顶部的空腔喷射燃料,以及火花塞,其点燃由燃料喷射产生的燃料 - 空气混合物。 直接燃料喷射发动机被构造成加强燃料流的穿透,以改善燃料流的方向性并且稳定地形成靠近火花塞的附聚燃料 - 空气混合物。 空腔优选具有底面,弯曲表面和平坦表面。 在沿着发动机气缸的中心轴线的平面图中,空腔C的形状分别形成为其焦点位于燃料喷射阀的末端和火花塞的火花放电间隙的椭圆形。 燃料喷射阀具有喷射固体燃料流的多个喷射孔。
    • 8. 发明授权
    • System and method for auto-ignition of gasoline internal combustion engine
    • 汽油内燃机自动点火系统及方法
    • US06386177B2
    • 2002-05-14
    • US09767025
    • 2001-01-23
    • Tomonori UrushiharaKoji Hiraya
    • Tomonori UrushiharaKoji Hiraya
    • F02B300
    • F02D13/0211F02B1/12F02B17/005F02B2075/025F02B2075/125F02D13/0253F02D13/0265F02D41/006F02D41/3035F02D41/3047F02D41/401F02D41/402F02D2013/0292F02D2041/001F02M26/01Y02T10/12Y02T10/123Y02T10/128Y02T10/18Y02T10/44Y02T10/47
    • During operation with part load, a gasoline internal combustion engine is operated with a lean air/fuel mixture by auto-ignition. During operation with full load, spark-ignition is used to operate the engine. The internal combustion engine is operated in three auto-ignition combustion modes depending upon magnitude of a predetermined operating parameter. The operating parameter is indicative of the engine load or the engine speed. The three auto-ignition combustion modes are a gasoline reform auto-ignition combustion mode, an auto-ignition stratified charge combustion mode, and an auto-ignition homogeneous charge combustion mode. In the gasoline reform auto-ignition combustion mode that may be selected during operation with low part load, a first fuel injection during an exhaust gas retaining phase produces sufficient amount of active fuel radicals for promotion of auto-ignition of air/fuel mixture produced by a second fuel injection during the subsequent compression phase. In the auto-ignition stratified charge combustion mode that may be selected during operation with intermediate part load, a fuel injection during compression phase supports auto-ignition. In the auto-ignition homogeneous charge combustion mode that may be selected during operation with high part load, a fuel injection during intake phase supports auto-ignition.
    • 在部分负载运行期间,汽油内燃机通过自动点火与贫空气/燃料混合物运行。 在满载运行时,使用火花点火来操作发动机。 根据预定的操作参数的大小,内燃机以三个自动点火燃烧模式操作。 运行参数表示发动机负荷或发动机转速。 三种自动点火燃烧模式是汽油改质自燃燃烧模式,自动点火分层充气燃烧模式和自动点火均质充气燃烧模式。 在可以在部分负荷低的操作期间选择的汽油改质自燃燃烧模式中,在排气保持阶段期间的第一次燃料喷射产生足够量的活性燃料自由基,以促进空气/燃料混合物自动点火 在随后的压缩阶段期间的第二次燃料喷射。 在自动点火分层充气燃烧模式下,在中间部分负荷运行期间可以选择,燃料喷射在压缩阶段支持自动点火。 在自动点火均质充气燃烧模式中,在高部分负载运行时可以选择,在进气阶段燃油喷射支持自动点火。