INTERNAL COMBUSTION ENGINE PISTON
    1.
    发明公开
    INTERNAL COMBUSTION ENGINE PISTON 失效
    活塞,内燃机。

    公开(公告)号:EP0148888A1

    公开(公告)日:1985-07-24

    申请号:EP84902533.0

    申请日:1984-06-25

    IPC分类号: F02B23 F02B3

    摘要: Moteur à combustion interne comprenant un piston (1) possédant une cuvette de combustion (3) évidée dans la couronne du piston et une pluralité d'évidements arqués (7) formés dans la paroi latérale (6) de la cuvette et écartés par des parties intermédiaires arquées de la paroi latérale, un organe de turbulence provoquant la rotation de l'air d'admission autour de l'axe de la cuvette, et un organe d'injection de carburant (2) permettant de diriger une pluralité de jets de carburant radialement par rapport à la cuvette et chacun vers un évidement correspondant (7). Le piston se caractérise par le fait que le rapport entre la distance maximum sur laquelle chaque évidement (7) s'étend radialement dans la paroi latérale (6) et le rayon de la paroi latérale (6) se situe entre 0,10 et 0,20.

    DIRECT INJECTION DIESEL ENGINE
    4.
    发明公开
    DIRECT INJECTION DIESEL ENGINE 有权
    DIESELMOTOR MIT DIREKTEINSPRITZUNG

    公开(公告)号:EP1876332A1

    公开(公告)日:2008-01-09

    申请号:EP06728994.2

    申请日:2006-03-13

    申请人: Yanmar Co., Ltd.

    摘要: With regard to a direct injection diesel engine comprising a piston 11, which has an upper recess constituting a cavity 21, and a fuel injection nozzle 12 injecting fuel into the cavity 12 of the piston, nozzle holes 32, which have at least a plurality of intersecting points between an axis of the fuel injection nozzle 12 and opening direction of the nozzle holes 32, are regarded as a pair, and a plurality of the pairs of the nozzle holes are provided in the fuel injection nozzle 12. An opening of a combustion chamber of the piston 11 is a polygon which has five or more corners. Accordingly, with regard to the diesel engine, engine output is improved, and noise and hydrocarbon in discharged gas are reduced.

    摘要翻译: 关于包括具有构成空腔21的上凹部的活塞11和将燃料喷射到活塞的空腔12中的燃料喷射喷嘴12的直喷式柴油发动机,喷嘴孔32具有至少多个 燃料喷射喷嘴12的轴线与喷嘴孔32的打开方向之间的相交点被认为是一对,并且在燃料喷射喷嘴12中设置多对喷嘴孔。燃烧口 活塞11的腔是具有五个以上角的多边形。 因此,关于柴油发动机,发动机输出提高,排出气体中的噪声和碳氢化合物减少。

    DIRECT INJECTION DIESEL ENGINE
    5.
    发明授权
    DIRECT INJECTION DIESEL ENGINE 有权
    直接喷射柴油机

    公开(公告)号:EP1876332B1

    公开(公告)日:2011-05-18

    申请号:EP06728994.2

    申请日:2006-03-13

    申请人: Yanmar Co., Ltd.

    摘要: A direct injection diesel engine having a piston (11) with a cavity (21) formed by a recess in the upper surface of the piston and a fuel injection nozzle (12) for injecting fuel into the cavity (21) of the piston. Sets of injection holes are provided in the fuel injection nozzle (12). Each set of the injection holes is composed of injection holes (32), and the direction of the openings of the injection holes (32) of each set intersect at least the axis of the fuel injection nozzle (12) at a plurality of points. The shape of an opening of a combustion chamber of the piston (11) is formed as a polygon having five or more sides. The output of the diesel engine is increased, noise is reduced, and the amount of hydrocarbon in exhaust gases is reduced.

    摘要翻译: 一种直喷式柴油发动机,其具有活塞(11),该活塞具有由活塞上表面中的凹部形成的空腔(21)和用于将燃料喷射到活塞的空腔(21)中的燃料喷嘴(12)。 在燃料喷嘴(12)中设有一组喷射孔。 每组喷孔都由喷孔(32)组成,并且每组喷孔(32)的开孔方向至少与燃油喷嘴(12)的轴线在多个点上相交。 活塞(11)的燃烧室的开口部的形状形成为五边以上的多边形。 柴油机的输出增加,噪音降低,排气中的碳氢化合物量减少。

    DIRECT INJECTION DIESEL ENGINE
    6.
    发明公开
    DIRECT INJECTION DIESEL ENGINE 有权
    DIESELMOTOR MIT DIREKTEINSPRITZUNG

    公开(公告)号:EP1876332A4

    公开(公告)日:2009-06-17

    申请号:EP06728994

    申请日:2006-03-13

    申请人: YANMAR CO LTD

    摘要: A direct injection diesel engine having a piston (11) with a cavity (21) formed by a recess in the upper surface of the piston and a fuel injection nozzle (12) for injecting fuel into the cavity (21) of the piston. Sets of injection holes are provided in the fuel injection nozzle (12). Each set of the injection holes is composed of injection holes (32), and the direction of the openings of the injection holes (32) of each set intersect at least the axis of the fuel injection nozzle (12) at a plurality of points. The shape of an opening of a combustion chamber of the piston (11) is formed as a polygon having five or more sides. The output of the diesel engine is increased, noise is reduced, and the amount of hydrocarbon in exhaust gases is reduced.

    摘要翻译: 一种直喷式柴油发动机,其具有活塞(11),该活塞具有由活塞上表面中的凹部形成的空腔(21)和用于将燃料喷射到活塞的空腔(21)中的燃料喷嘴(12)。 在燃料喷嘴(12)中设有一组喷射孔。 每组喷孔都由喷孔(32)组成,并且每组喷孔(32)的开孔方向至少与燃油喷嘴(12)的轴线在多个点上相交。 活塞(11)的燃烧室的开口部的形状形成为五边以上的多边形。 柴油机的输出增加,噪音降低,排气中的碳氢化合物量减少。

    Combustion chamber for internal combustion engines
    9.
    发明公开
    Combustion chamber for internal combustion engines 失效
    BrennkammerfürBrennkraftmaschinen。

    公开(公告)号:EP0269093A2

    公开(公告)日:1988-06-01

    申请号:EP87117413.2

    申请日:1987-11-25

    IPC分类号: F02B23/06

    摘要: A combustion chamber (3) defined by a recess formed in the piston top (2) in the center axis (O₁) direction thereof with its geometric magnitude being progressively enlarged in the direction of the recess. The intensities of swirl flow (S) and squish flow (V) are optimized by letting the two flows (S,V) interact each other in the upstream side so as to optimize the air flow in the combustion chamber (3) overall. In the meantime, fuel is atomized and injected through a fuel injection nozzle means (15), which has five or more nozzle holes (5), toward the side wall (4a) of the combustion chamber (3) so as to circumferentially divide the chamber (3) by the fuel sprays (f) into five or more approximately equal sections. Thus, uniform dispersion and distribution of fuel together with the optimized flow of air is achieved in the combustion chamber (3), whereby the air utilization rate is raised and the combustion unburnt matters are decreased.

    摘要翻译: 燃烧室(3),其形成在所述活塞顶部(2)中在其中心轴线(O1)方向上的凹部,其几何尺寸沿着所述凹部的方向逐渐增大。 通过使两个流(S,V)在上游侧彼此相互作用来优化涡流(S)和挤压流(V)的强度,从而整体上优化燃烧室(3)中的气流。 同时,通过具有五个或更多个喷嘴孔(5)的燃料喷射喷嘴装置(15)将燃料雾化并喷射到燃烧室(3)的侧壁(4a)上,以便周向地划分 (3)由燃料喷雾器(f)分成五个或更多个大致相等的部分。 因此,在燃烧室(3)中实现燃料的均匀分散和分配以及优化的空气流,由此提高空气利用率并降低燃烧未燃烧物质。