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    • 22. 发明申请
    • INTAKE AND EXHAUST SYSTEM FOR MULTI-CYLINDER ENGINE
    • 多缸发动机的进气和排气系统
    • US20130306025A1
    • 2013-11-21
    • US13978357
    • 2012-01-10
    • Takamasa MatsumotoMikihito Fujii
    • Takamasa MatsumotoMikihito Fujii
    • F02M63/00
    • F02M63/00F01N13/10F01N2260/14F01N2260/16F01N2340/02F02B27/04F02D13/0261Y02T10/146Y02T10/18
    • A multi-cylinder engine intake and exhaust having a plurality of independent exhaust passages each connected to an exhaust port in a respective one of a plurality of cylinders, a collecting pipe connected to downstream ends of the plurality of independent exhaust passages, and a volume-enlarged portion provided downstream with respect to the collecting pipe. Each of at least a downstream portion of each of the plurality of independent exhaust passages and at least an upstream portion of the collecting pipe is formed such that a cross-sectional area thereof gradually decreases toward a downstream direction. The volume-enlarged portion is formed such that a cross-sectional area thereof is relatively increased so as to cause a positive pressure wave of exhaust gas reaching the volume-enlarged portion to be reflected and converted to a negative pressure wave.
    • 一种多气缸发动机进气和排气,具有多个独立的排气通道,每个排气通道连接到多个气缸中的相应一个气缸中的排气口,连接到所述多个独立排气通道的下游端的收集管, 相对于收集管设置在下游的扩大部分。 多个独立排气通道中的每一个的至少一个下游部分和收集管的至少上游部分中的每一个形成为使得其横截面积朝向下游方向逐渐减小。 体积扩大部分形成为使得其横截面积相对增加,以使得到达体积扩大部分的排气的正压波被反射并转换成负压波。