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    • 3. 发明申请
    • Multiple-cylinder internal combustion engine having cylinder head provided with centralized exhaust passageway
    • 具有气缸盖的多气缸内燃机设有集中排气通道
    • US20100251704A1
    • 2010-10-07
    • US11648895
    • 2007-01-03
    • Koichiro AsameYuusuke Wada
    • Koichiro AsameYuusuke Wada
    • F01N1/00
    • F02F1/243F02F1/4264
    • A cylinder head 2 for a multiple-cylinder internal combustion engine is provided with a centralized exhaust passageway E. The centralized exhaust passageway E includes individual exhaust passageways 51 to 54 connected to combustion chambers defined by recesses 11 to 14, and a central passageway 60 collecting the exhaust gas flowing through the individual exhaust passageways 51 to 54. Each of the exhaust passageways 51 to 54 has two branch passageways 21,31; 22,32; 23,33; 24,34 extending from the exhaust ports Ea opened and closed by exhaust valves 6, and a merging passageway 41; 42; 43; 44 having one end connected to the two branch passageways. The respective passage diameters D1 to D4 of the merging passageways 41 to 44 are substantially equal to the passage diameters d1 to d4 of the branch passageways. The merging passageways 41 to 44 and the central collecting passageway 60 are surrounded with water jackets W1 and W2 from above and below. Thus exhaust gas cooling efficiency can be improved without enlarging the cylinder head provided with the centralized exhaust passage.
    • 用于多缸内燃机的气缸盖2设置有集中排气通道E.集中排气通道E包括连接到由凹部11至14限定的燃烧室的单独的排气通道51至54以及收集 排气通过各个排气通路51〜54。排气通路51〜54中的每一个具有两个分支通道21,31; 22,32; 23,33; 24,34从排气门6打开和关闭的排气口Ea延伸,以及合流通道41; 42; 43; 44,其一端连接到两个分支通道。 合流通道41〜44的各通路直径D1〜D4基本上等于分支通道的通道直径d1至d4。 合流通道41至44和中央收集通道60从上下方向被水套W1和W2包围。 因此,可以提高排气冷却效率,而不需要扩大设置有集中排气通道的气缸盖。
    • 4. 发明授权
    • Multiple-cylinder internal combustion engine having cylinder head provided with centralized exhaust passageway
    • 具有气缸盖的多气缸内燃机设有集中排气通道
    • US07849683B2
    • 2010-12-14
    • US11648895
    • 2007-01-03
    • Koichiro AsameYuusuke Wada
    • Koichiro AsameYuusuke Wada
    • F01P3/02F02F1/38F02F1/42
    • F02F1/243F02F1/4264
    • A cylinder head 2 for a multiple-cylinder internal combustion engine is provided with a centralized exhaust passageway E. The centralized exhaust passageway E includes individual exhaust passageways 51 to 54 connected to combustion chambers defined by recesses 11 to 14, and a central passageway 60 collecting the exhaust gas flowing through the individual exhaust passageways 51 to 54. Each of the exhaust passageways 51 to 54 has two branch passageways 21, 31; 22,32; 23,33; 24,34 extending from the exhaust ports Ea opened and closed by exhaust valves 6, and a merging passageway 41; 42; 43; 44 having one end connected to the two branch passageways. The respective passage diameters D1 to D4 of the merging passageways 41 to 44 are substantially equal to the passage diameters d1 to d4 of the branch passageways. The merging passageways 41 to 44 and the central collecting passageway 60 are surrounded with water jackets W1 and W2 from above and below. Thus exhaust gas cooling efficiency can be improved without enlarging the cylinder head provided with the centralized exhaust passage.
    • 用于多缸内燃机的气缸盖2设置有集中排气通道E.集中排气通道E包括连接到由凹部11至14限定的燃烧室的单独的排气通道51至54以及收集 排气通过各个排气通路51〜54。排气通道51〜54中的每一个具有两个分支通道21,31; 22,32; 23,33; 24,34从排气门6打开和关闭的排气口Ea延伸,以及合流通道41; 42; 43; 44,其一端连接到两个分支通道。 合流通道41〜44的各通路直径D1〜D4基本上等于分支通道的通道直径d1至d4。 合流通道41至44和中央收集通道60从上下方向被水套W1和W2包围。 因此,可以提高排气冷却效率,而不需要扩大设置有集中排气通道的气缸盖。