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    Internal combustion engine
    5.
    发明授权
    Internal combustion engine 失效
    内燃机

    公开(公告)号：US5762042A

    公开(公告)日：1998-06-09

    申请号：US808432

    申请日：1997-02-28

    申请人： Satoshi Yoshikawa ,  Katsunori Ueda ,  Takashi Kawabe ,  Hideyuki Oda ,  Kenji Goto ,  Nobuaki Murakami

    发明人： Satoshi Yoshikawa ,  Katsunori Ueda ,  Takashi Kawabe ,  Hideyuki Oda ,  Kenji Goto ,  Nobuaki Murakami

    IPC分类号： F02B23/10 ,  F02B29/00 ,  F02B31/00 ,  F02B31/02 ,  F02B75/12 ,  F02F1/24 ,  F02F1/42 ,  F02F3/26

    CPC分类号： F02F1/242 ,  F02B23/104 ,  F02B31/00 ,  F02F1/4214 ,  F02F3/26 ,  F02B2023/107 ,  F02B2031/006 ,  F02B2075/125 ,  F02B2275/18 ,  F02B2275/48 ,  F02F2001/241 ,  F02F2001/245 ,  Y02T10/125 ,  Y02T10/146

    摘要： An internal combustion engine includes a cylinder head having a pair of upright intake ports formed therein on opposite sides of a plug hole extending along a cylinder axis, and each intake port has an upstream-side upright part extending from the top face of the cylinder head along the cylinder axis and a downstream-side slanting part having an intake opening communicating with a combustion chamber on one side of an imaginary plane containing the cylinder axis. An upper opening of each intake port opening in the top face of the cylinder head has a peripheral edge extending along the peripheral edge of an upper opening of the plug hole, and the peripheral edge of the upstream-side upright part extends along the outer surface of a lash adjuster. When viewed in vertical section along the imaginary plane, the upstream-side upright part extends obliquely downward from the top face of the cylinder head in a direction away from the lash adjuster, and the downstream-side slanting part approaches the plug hole with decrease in distance to the combustion chamber and then extends parallel to the plug hole. The downstream-side slanting part, when viewed in vertical section perpendicular to the imaginary plane, extends away from the cylinder axis with decrease in distance to the intake opening. With the intake ports having the above overall shape and sectional shape, each intake port can be given a required cross-sectional area without increasing the dimensions of the engine, and makes it possible to form a proper intake air flow inside the combustion chamber.

    摘要翻译： 一种内燃机，具有：气缸盖，其具有沿着气缸轴线延伸的塞孔的相对侧形成的一对直立进气口，每个进气口具有从气缸盖的顶面延伸的上游侧直立部 沿着气缸轴线和具有与包含气缸轴线的假想平面的一侧上的燃烧室连通的进气口的下游侧倾斜部件。 在气缸盖的上表面中的每个进气口开口的上开口具有沿着插塞孔的上开口的周缘延伸的周边边缘，并且上游侧直立部的周缘沿着外表面延伸 的间隙调节器。 当沿着假想平面的垂直截面观察时，上游侧立柱部分从气缸盖的上表面向远离间隙调节器的方向倾斜向下延伸，并且下游侧倾斜部分随着减小 到燃烧室的距离，然后平行于插塞孔延伸。 当垂直于假想平面的垂直截面观察时，下游侧倾斜部分随着与进气口的距离减小而远离气缸轴线延伸。 在进气口具有上述整体形状和截面形状的情况下，每个进气口可以被赋予所需的横截面面积，而不增加发动机的尺寸，并且可以在燃烧室内形成适当的进气流。