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    • 71. 发明公开
    • 디젤엔진의 연소실 구조
    • 柴油发动机燃烧室结构
    • KR1020030027583A
    • 2003-04-07
    • KR1020010060937
    • 2001-09-29
    • 현대자동차주식회사
    • 조동현
    • F02F3/26
    • F02B3/06
    • PURPOSE: A combustion chamber structure of a diesel engine is provided to achieve increased strength of vortex at the wall of the combustion chamber, while maintaining a swirl. CONSTITUTION: A piston(1) is arranged in a cylinder which is coupled beneath a cylinder head which has a fuel injection nozzle. A combustion chamber(4) formed in the head portion of the piston has a fim(7) protruded from the center of the combustion chamber so as to generate a swirl flow from the flow of the fuel-air mixture. A re-entrant chamber(6) having a predetermined depth(H') has an entrance region having a center deflected with respect to the center of the combustion chamber. The deflected center of the re-entrant chamber is formed with ribs(6') having different protrusion lengths(K1,K2) at the symmetrical position in the upper portion of the combustion chamber.
    • 目的:提供柴油发动机的燃烧室结构,以在燃烧室的壁处提高涡流强度,同时保持涡流。 构成:活塞(1)布置在气缸中,气缸联接在具有燃料喷射喷嘴的气缸盖下方。 形成在活塞的头部的燃烧室(4)具有从燃烧室的中心突出的翼缘(7),以从燃料 - 空气混合物的流动产生涡旋流。 具有预定深度(H')的入口室(6)具有相对于燃烧室中心偏转的中心的入口区域。 入口室的偏转中心形成有在燃烧室上部的对称位置具有不同突出长度(K1,K2)的肋(6')。
    • 80. 发明授权
    • 크라운 냉각 제트를 가진 피스톤
    • KR101794165B1
    • 2017-11-06
    • KR1020167035667
    • 2010-04-08
    • 페더럴-모걸 엘엘씨
    • 레벨로호세
    • F02F3/00F02F3/22F02F3/26F01P3/10F16J1/09F01P3/08F01P1/04
    • F02F3/003F02F3/22
    • 피스톤(10, 10')은피스톤보디(12, 12')를포함하고있고, 이피스톤보디(12, 12')는연소력의작용을받는상부연소돔(18, 18')을가진상부크라운부분(16, 16')을가지고있다. 상부연소돔(18, 18')의아래쪽은언더-크라운구역(60, 60')으로이루어져있다. 피스톤보디(12, 12')는또한하부크라운부분(26, 26')을포함하고있고, 이하부크라운부분(26, 26')은커넥팅로드를피벗식으로인접하여배치시키기위해이격되어있는한 쌍의핀 보스(36, 38)를가지고있다. 외측냉각유로(31, 31')는상부크라운부분(16, 16')과하부크라운부분(26, 26') 사이의개재부(inclusion)로서형성되어있다. 외측냉각유로(31, 31')는오일입구(50, 50') 및오일출구(52, 52')를가지고있다. 튜브형오일제트(54, 54')는오일출구(52, 52')와유체연통상태로부착되어있으며피스톤(16, 16')이왕복운동하는동안오일이배출되는언더-크라운구역(60, 60') 쪽으로뻗어있다. 외측냉각유로(33)로부터나오는냉각오일은오일제트(54, 54')에의해언더-크라운구역(60, 60')으로보내져서수동적으로작동되는시스템에서보충적인냉각기능을제공한다.