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    • 1. 发明授权
    • Combustion chamber of an internal combustion engine equipped with an
auxiliary combustion chamber
    • 配备有辅助燃烧室的内燃机的燃烧室
    • US4291662A
    • 1981-09-29
    • US43794
    • 1979-05-30
    • Norihiko NakamuraKiyoshi NakanishiTakashi Kato
    • Norihiko NakamuraKiyoshi NakanishiTakashi Kato
    • F02B1/04F02B19/12F02B23/08
    • F02B19/12F02B1/04Y02T10/125
    • An internal combustion engine comprises a main combustion chamber and an auxiliary combustion chamber which are interconnected to each other via a connecting passage. The spark plug is arranged in the connecting passage. The engine further comprises a first raised portion formed on the inner wall of the cylinder head, a second raised portion formed on the top face of the piston at a position opposite to the first raised portion with respect to the axis of the piston, and a third raised portion formed on the inner wall of the cylinder head above the second raised portion. A first flat squish area is formed between the flat peripheral top face of the piston and the flat bottom face of the first raised portion. A second spherical shell shaped squish area is formed between the spherical bottom wall of the third raised portion and the spherical rear face of the second raised portion. The axis of the connecting passage is located in the extension of the second squish area.
    • 内燃机包括通过连接通道相互连接的主燃烧室和辅助燃烧室。 火花塞布置在连接通道中。 发动机还包括形成在气缸盖的内壁上的第一凸起部分,在与活塞的轴线相对的第一凸起部分的位置处形成在活塞的顶面上的第二凸起部分,以及 第三凸起部分形成在第二凸起部分上方的气缸盖的内壁上。 第一扁平挤压区域形成在活塞的平坦周边顶面和第一凸起部分的平坦底面之间。 在第三凸起部分的球形底壁和第二凸起部分的球形后表面之间形成第二球形壳形挤压区域。 连接通道的轴线位于第二挤压区域的延伸部分。
    • 2. 发明授权
    • Combustion chamber of an internal combustion engine
    • 内燃机燃烧室
    • US4318376A
    • 1982-03-09
    • US117293
    • 1980-01-31
    • Norihiko NakamuraKiyoshi NakanishiKazuhiko ItouToyokazu BaikaShuji Morita
    • Norihiko NakamuraKiyoshi NakanishiKazuhiko ItouToyokazu BaikaShuji Morita
    • F02B1/04F02B19/12F02B23/08
    • F02B19/12F02B23/08F02B1/04Y02T10/125
    • An internal combustion engine having an auxiliary combustion chamber connected to only the main combustion chamber via a connecting passage. The engine comprises a first raised portion formed on the inner wall of the cylinder head, a second raised portion formed on the top face of the piston at a position opposite to the first raised portion with respect to the axis of the piston, and a third raised portion formed on the inner wall of the cylinder head above the second raised portion. A first flat squish area is formed between the flat peripheral top face of the piston and the flat bottom face of the first raised portion. A second spherical shell shape squish area is formed between the spherical bottom wall of the third raised portion and the spherical rear face of the second raised portion. A recessed portion is formed on the top wall of the main combustion chamber at a position near the first raised portion. The open end of the connecting passage is arranged in the recessed portion. The spark plug is arranged within the recessed portion at a position near the open end of the connecting passage and outside of the extension of the connecting passage.
    • 一种具有辅助燃烧室的内燃机,该辅助燃烧室仅通过连接通道连接到主燃烧室。 发动机包括形成在气缸盖的内壁上的第一升高部分,在与活塞的轴线相对的第一凸起部分的位置形成在活塞顶面上的第二凸起部分,以及第三凸起部分 凸起部分形成在第二凸起部分上方的气缸盖的内壁上。 第一扁平挤压区域形成在活塞的平坦周边顶面和第一凸起部分的平坦底面之间。 在第三凸起部分的球形底壁和第二凸起部分的球形后表面之间形成第二球形壳体挤压区域。 在靠近第一升高部分的位置处,在主燃烧室的顶壁上形成凹部。 连接通道的开口端设置在凹部中。 火花塞在靠近连接通道的开口端的位置和连接通道的延伸部的外侧设置在凹部内。
    • 6. 发明授权
    • Variable Venturi carburetor
    • 可变文丘里化油器
    • US4302404A
    • 1981-11-24
    • US080116
    • 1979-09-28
    • Norihiko NakamuraTakashi Kato
    • Norihiko NakamuraTakashi Kato
    • F02B3/06F02D1/10F02M7/17F02M9/06
    • F02M7/17F02D1/10F02B3/06Y10S261/38
    • A variable venturi carburetor wherein the suction piston is fully closed with respect to the venturi section at engine stop to elevate the negative pressure at the time of cranking, and is opened to a predetermined degree at the time of idling, thereby obtaining stable driving performance at a suitable air-fuel ratio. The suction piston slides, via a spring, into and out from a suction chamber communicating with a mixing chamber via a negative pressure path and has at its head a metering needle to face a metering jet. The low negative pressure occurring in the mixing chamber along with cranking is reliably applied to the gap between the metering needle and the metering jet which is wider than the gap in their matching state at the time of idling. Hence, the engine starts operating with an over-rich air-fuel ratio. The suction piston is shaped in such manner so as to close a venturi section on the upstream side with respect to the base portion of the metering needle at the time of stop of the engine. A venturi-crossing flange is disposed at a location corresponding to the position in the venturi section of either one or both of the suction piston head and a barrel member of the above-mentioned venturi section. Alternatively, an atmospheric pressure is communicated with the negative pressure to the suction chamber in order to enable driving at a set air-fuel ratio with a suitable lift movement.
    • 一种可变文丘里化油器,其中吸气活塞在发动机停止时相对于文氏管部分完全关闭,以提升起动时的负压,并且在空转时打开至预定的程度,从而获得稳定的驾驶性能 合适的空燃比。 抽吸活塞经由弹簧经由负压路径从与混合室连通的吸入室滑入和排出,并且在其头部具有计量针以面对计量喷射器。 发生在混合室中的低负压与起动一起被可靠地施加到计量针和计量喷射器之间的间隙,其在空转时处于匹配状态下的间隙宽度。 因此,发动机以超浓空燃比开始运转。 抽吸活塞以这样的方式成形,以便在发动机停止时关闭相对于计量针的基部的上游侧的文氏管部分。 文丘里交叉法兰被布置在对应于吸入活塞头和上述文氏管部分的桶构件中的一个或两个的文氏管部分中的位置的位置处。 或者,将大气压力与负压连通到吸入室,以便能够以适当的提升运动以设定的空燃比进行驱动。