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    • 3. 发明授权
    • Exhaust passage structure of outboard motor unit
    • 舷外马达单元的排气通道结构
    • US5822985A
    • 1998-10-20
    • US687020
    • 1996-07-25
    • Masaaki Yoshimura
    • Masaaki Yoshimura
    • B63H20/24B63H21/32F01N3/04F01N3/28F01N13/12F02B61/04F02B75/02F02B75/18F02B75/22
    • F01N13/12F01N13/004F01N3/043F01N3/28F02B61/045F01N2590/021F02B2075/025F02B2075/1824F02B75/22Y02T10/20
    • An exhaust passage structure is provided for an outboard motor unit having an engine holder mounted to a hull through a bracket, an engine disposed to an upper portion of the engine holder, a drive shaft housing disposed to a lower portion of the engine holder and an exhaust passage structure extending from the engine into water through the drive shaft housing. The exhaust passage structure has an improvement in which first and second exhaust expansion chambers are disposed on the way of an exhaust passage of the exhaust passage structure, the second exhaust expansion chamber is disposed to an upper portion of the engine holder, an exhaust tube is disposed on an upstream side of another exhaust passage which communicates the second exhaust expansion chamber with the water so that an upstream side opening of the exhaust tube is directed upward in a mounted state. The opening is opened at a position between the location of the bracket, preferably the catalyst disposed in the first exhaust expansion chamber, and an upper end of the engine cylinder so that the water does not enter the second exhaust expansion chamber even if a draft line of the water rises.
    • 为舷外马达单元提供排气通道结构,其具有通过托架安装在船体上的发动机保持架,设置在发动机保持架上部的发动机,设置在发动机保持架下部的驱动轴壳体和 排气通道结构通过驱动轴壳体从发动机延伸到水中。 排气通道结构具有第一和第二排气膨胀室设置在排气通道结构的排气通道途中的改进,第二排气膨胀室设置在发动机保持器的上部,排气管为 设置在另一个排气通道的上游侧,其连通第二排气膨胀室与水,使得排气管的上游侧开口在安装状态下朝上。 开口在支架的位置,优选地设置在第一排气膨胀室中的催化剂和发动机气缸的上端之间的位置处打开,使得即使在牵引线 的水涨了。
    • 4. 发明授权
    • Exhaust structure of outboard motor
    • 舷外马达排气结构
    • US5743774A
    • 1998-04-28
    • US690991
    • 1996-08-01
    • Shigeo AdachiMasaaki Yoshimura
    • Shigeo AdachiMasaaki Yoshimura
    • B63H20/24B63H21/38F01N3/28F01N13/12F02B61/04
    • F01N13/12B63H20/245F01N3/28F02B61/045B63B2770/00F01N2590/021
    • An outboard motor is provided with an engine holder, an engine mounted to an upper portion of the engine holder, a drive shaft housing mounted to a lower portion of the engine holder and an exhaust structure connecting an exhaust inlet opening formed to an upper surface of the engine holder to an exhaust outlet opening formed to a lower surface of the engine holder, in an installed state. The exhaust structure has an exhaust port passage extending downward from the engine and communicated with the exhaust inlet opening, an exhaust tube extending downward into the drive shaft housing and an exhaust passage formed between the exhaust inlet and outlet openings, the exhaust passage extending horizontally in the engine holder and being formed with a catalyst chamber in which a catalyst is arranged horizontally.
    • 舷外马达设置有发动机保持器,安装在发动机保持器的上部的发动机,安装到发动机保持器的下部的驱动轴壳体和连接形成于发动机保持器的上表面的排气入口的排气结构 所述发动机保持器处于安装状态下形成到所述发动机保持器的下表面的排气出口。 排气结构具有从发动机向下延伸并与排气入口连通的排气口通道,向下延伸到驱动轴壳体中的排气管和形成在排气入口和出口之间的排气通道,排气通道水平延伸 发动机保持器并且形成有催化剂室,其中催化剂水平布置。