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    • 71. 发明授权
    • Structure of combustion chamber in diesel engine
    • 柴油机燃烧室结构
    • US4721080A
    • 1988-01-26
    • US787794
    • 1985-10-03
    • Takeshi MoriyasuJun IsomotoTatsuro NakagamiHiroo TakahashiTakuo Maeda
    • Takeshi MoriyasuJun IsomotoTatsuro NakagamiHiroo TakahashiTakuo Maeda
    • F02B3/06F02B23/06F02F3/26F02B19/08
    • F02B23/0636F02B23/06F02B23/0651F02B23/0693F02B23/0696F02F3/26F02B2275/14F02B2275/40F02B23/0621F02B23/0624F02B23/0669F02B3/06Y02T10/123Y02T10/125
    • In a combustion chamber structure in a direct injection type diesel engine, in order to prevent flames from flowing out to a quench zone Q from a combustion chamber (32) which opens to a top part (30a) of a piston (30) to thereby prevent cooling of the flames and also in order to prevent a fuel spray from being concentrated on a lower portion of the combustion chamber (32), the fuel spray should be reflected in the combustion chamber (32) effectively according to displacement of the piston (30) to allow it to be mixed with air sufficiently in the combustion chamber (32) or in a cylinder (28), and to this end there are provided a guide wall (34) which becomes larger in inside diameter downwardly from an opening edge portion (33) of the combustion chamber (32), as well as fuel reflection walls (36, 38) which project below the guide wall (34) toward a central axis (lo) of the combustion chamber (32) and divide the combustion chamber vertically into a first combustion chamber (44) and a second combustion chamber (48).
    • PCT No.PCT / JP85 / 00058 Sec。 371日期:1985年10月3日 102(e)日期1985年10月3日PCT提交1985年2月14日PCT公布。 公开号WO85 / 03738 日期为1985年8月29日。在直喷式柴油发动机的燃烧室结构中,为了防止火焰从开放到顶部(30a)的燃烧室(32)流出到淬火区域Q 活塞(30),从而防止火焰的冷却,并且为了防止燃料喷雾集中在燃烧室(32)的下部,燃料喷雾应该有效地在燃烧室(32)中反射 根据活塞(30)的位移,使其与空气充分混合在燃烧室(32)或气缸(28)中,并且为此,设置有导向壁(34),其在 从燃烧室(32)的开口边缘部分(33)向下的内径以及在引导壁(34)下方朝向燃烧室(32)的中心轴线(lo)突出的燃料反射壁(36,38) (32)并将燃烧室垂直分成第一燃烧室 琥珀(44)和第二燃烧室(48)。
    • 74. 发明授权
    • Internal combustion engine
    • 内燃机
    • US4235202A
    • 1980-11-25
    • US18471
    • 1979-03-08
    • Uwe Buddenhagen
    • Uwe Buddenhagen
    • F02B3/06F02B19/14F02B23/06F02F3/26F02B3/00
    • F02B23/0675F02B19/14F02B23/0618F02B23/0636F02B2275/14F02B3/06Y02T10/123Y02T10/125
    • An internal combustion engine having in the piston crown or cylinder head a combustion chamber in the shape of a body of revolution with a constricted throat. At the end of the compression stroke, the combustion chamber accommodates substantially all of the air for combustion which is imparted a rotation about the longitudinal axis of the combustion chamber. Taking into account the respectively specified combustion chamber volume, the maximum combustion chamber diameter, the combustion chamber depth, the inclination or curvature of the combustion chamber wall, and the inclination or curvature of the transition from the combustion chamber wall to the combustion chamber bottom are matched in such a way that, utilizing the friction occurring between the combustion chamber wall and the rotating air, a boundary layer or interface flow is produced, resulting in velocity components of a predetermined intensity extending in a direction at least substantially perpendicular to the rotating motion of the air, the velocity components in turn generating secondary turbulence.
    • 一种内燃机,其在活塞顶部或气缸体中具有具有收缩喉部的具有旋转体形状的燃烧室。 在压缩冲程结束时,燃烧室基本上容纳有用于燃烧的空气,其被赋予围绕燃烧室的纵向轴线的旋转。 考虑到分别指定的燃烧室体积,最大燃烧室直径,燃烧室深度,燃烧室壁的倾角或曲率以及从燃烧室壁到燃烧室底部的过渡的倾斜或曲率是 使得利用在燃烧室壁和旋转空气之间产生的摩擦产生边界层或界面流,从而产生预定强度的速度分量,该预定强度在至少基本垂直于旋转运动的方向上延伸 的空气,速度分量又产生次级湍流。