Combustion chamber shape of direct injection type diesel engine
    1.
    发明授权
    Combustion chamber shape of direct injection type diesel engine 有权
    直喷式柴油机的燃烧室形状

    公开(公告)号:US07472678B2

    公开(公告)日:2009-01-06

    申请号:US11629707

    申请日:2005-05-25

    IPC分类号: F02B23/02 F02B23/06 F02F3/26

    摘要: An object of the present invention is to provide a combustion chamber shape of a direct injection type diesel engine in which a black smoke generation amount can be suppressed during no-load operation while suppressing NOx and fuel consumption. The combustion chamber 5 is formed in a recessed shape in a piston top wall 3 and injecting fuel at a predetermined nozzle hole angle α into the combustion chamber 5 from a nozzle hole 20 of a fuel injection valve having a nozzle hole center O1 substantially on a cylinder center line. A wall face of the combustion chamber 5 includes: a conical mountain portion 12 formed at a central portion in the combustion chamber and having such a slope angle and skirt end diameter D2 that fuel spray does not collide with the mountain portion; a slope portion 14 that inclines downward and outward from a skirt end of the mountain portion 12 at a smaller angle than the slope angle of the mountain portion 12 and with which the fuel spray collides; and a saucer portion 15 which rises in an arc shape from an outer peripheral end of the slope portion 14 to reach an outer peripheral end of the combustion chamber and with which the fuel spray collides.

    摘要翻译: 本发明的目的是提供一种直喷式柴油发动机的燃烧室形状,其中在空载运转期间可以抑制黑烟发生量同时抑制NOx和燃料消耗。 燃烧室5在活塞顶壁3中形成为凹形,并且从具有喷嘴孔中心O1的燃料喷射阀的喷嘴孔20将喷射孔角度α的燃料喷射到燃烧室5中, 气缸中心线。 燃烧室5的壁面包括:形成在燃烧室的中心部分并具有倾斜角度和裙部端部直径D2的锥形山部12,燃料喷雾不与山部相撞; 斜坡部分14以比山部部分12的倾斜角度更小的角度从山部分12的裙边向下和向外倾斜并与燃料喷雾器相撞; 以及从斜面部分14的外周端以弧形形状到达燃烧室的外周端并与燃料喷雾相撞的碟形部分15。

    Combustion Chamber Shape of Direct Injection Type Diesel Engine
    2.
    发明申请
    Combustion Chamber Shape of Direct Injection Type Diesel Engine 有权
    直喷式柴油机燃烧室形状

    公开(公告)号:US20070272191A1

    公开(公告)日:2007-11-29

    申请号:US11629707

    申请日:2005-05-25

    IPC分类号: F02F1/24

    摘要: An object of the present invention is to provide a combustion chamber shape of a direct injection type diesel engine in which a black smoke generation amount can be suppressed during no-load operation while suppressing NOx and fuel consumption. The combustion chamber 5 is formed in a recessed shape in a piston top wall 3 and injecting fuel at a predetermined nozzle hole angle α into the combustion chamber 5 from a nozzle hole 20 of a fuel injection valve having a nozzle hole center O1 substantially on a cylinder center line. A wall face of the combustion chamber 5 includes: a conical mountain portion 12 formed at a central portion in the combustion chamber and having such a slope angle and skirt end diameter D2 that fuel spray does not collide with the mountain portion; a slope portion 14 that inclines downward and outward from a skirt end of the mountain portion 12 at a smaller angle than the slope angle of the mountain portion 12 and with which the fuel spray collides; and a saucer portion 15 which rises in an arc shape from an outer peripheral end of the slope portion 14 to reach an outer peripheral end of the combustion chamber and with which the fuel spray collides.

    摘要翻译: 本发明的目的是提供一种直喷式柴油发动机的燃烧室形状,其中在空载运转期间可以抑制黑烟发生量同时抑制NOx和燃料消耗。 燃烧室5在活塞顶壁3中形成为凹形,并且从具有喷嘴孔中心O 1的燃料喷射阀的喷嘴孔20将燃料以预定喷嘴孔角α喷射到燃烧室5中,喷嘴孔20基本上在 气缸中心线。 燃烧室5的壁面包括:形成在燃烧室的中心部分并且具有倾斜角度和裙部端部直径D 2的锥形山部12,燃料喷雾不与山部相撞; 斜坡部分14以比山部部分12的倾斜角度更小的角度从山部分12的裙边向下和向外倾斜并与燃料喷雾器相撞; 以及从斜面部分14的外周端以弧形形状到达燃烧室的外周端并与燃料喷雾相撞的碟形部分15。

    Exhaust manifold for internal combustion engine
    3.
    发明申请
    Exhaust manifold for internal combustion engine 审中-公开
    内燃机排气歧管

    公开(公告)号:US20070079608A1

    公开(公告)日:2007-04-12

    申请号:US10579493

    申请日:2004-11-12

    IPC分类号: F01N5/02 F01N7/00

    CPC分类号: F02F1/4264 F01N13/10

    摘要: The present invention relates to an exhaust manifold for a supercharger-equipped internal combustion engine having multiple cylinders capable of preventing an increase in the fuel consumption and of reducing load application time. The engine satisfies at least one of the following expressions, where D is the diameter of a main tube of the exhaust manifold, d is the diameter of a branch tube, D1 is the diameter of a passage of a connection connecting the branch tube to the main tube, R is the radius in the outer peripheral side of the connection smoothly connecting the branch tube to the main tube of the exhaust manifold, and r is the radius in the inner circumference side. 1.2≦(D/d)2 ≦2.5, 0.8≦(d/de)2≦1.2, 0.7≦(D/D1)2≦1.4, 1.7≦R/r≦2.1.

    摘要翻译: 本发明涉及一种具有多个气缸的增压器内燃机的排气歧管,能够防止燃料消耗的增加和减少负荷施加时间。 发动机满足以下表达式中的至少一个,其中D是排气歧管的主管的直径,d是分支管的直径,D 1是通道的直径 连接分支管与主管的连接,R是连接的外周侧的半径,平滑地将分支管连接到排气歧管的主管,r是内周侧的半径。 1.2 <=(D / D)2 <= 2.5,0.8 <=(D / DE)2 <= 1.2,0.7 <=(D / D> 1 2 <= 1.4,1.7 <= R / r <= 2.1。

    Fuel injection valve for diesel engine
    4.
    发明申请
    Fuel injection valve for diesel engine 审中-公开
    柴油机燃油喷射阀

    公开(公告)号:US20050120995A1

    公开(公告)日:2005-06-09

    申请号:US10502343

    申请日:2002-12-24

    摘要: A diesel engine including a shallow-dish type combustion chamber on the top face of a piston. A fuel injection valve projects toward the combustion chamber, where a plurality of first nozzle holes are arranged in the same circumference of the fuel injection valve. A plurality of second nozzle holes having a diameter smaller than that of the first nozzle holes are provided in a circular side wall of the fuel injection valve, the circular side wall locating opposite to the tip part of the valve with respect to the first nozzle holes. The first nozzle holes and the second nozzle holes are staggered so that the sprays of the fuel ejected from the first nozzle holes and the second nozzle holes do no cross one another.

    摘要翻译: 一种柴油发动机,其包括活塞顶面上的浅盘型燃烧室。 燃料喷射阀朝向燃烧室突出,其中多个第一喷嘴孔布置在燃料喷射阀的同一圆周上。 在燃料喷射阀的圆形侧壁中设置有直径小于第一喷嘴孔直径的多个第二喷嘴孔,与第一喷嘴孔的顶端部相对的圆形侧壁 。 第一喷嘴孔和第二喷嘴孔交错,使得从第一喷嘴孔和第二喷嘴孔喷出的燃料喷雾不互相交叉。