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Invention Grant
US07677221B2 Internal-combustion engine, notably of direct injection type, with a piston provided with a bowl comprising a teat 失效
具有特别是直接喷射型的内燃机，具有设置有包括奶头的碗的活塞

Internal-combustion engine, notably of direct injection type, with a piston provided with a bowl comprising a teat
Abstract:
The invention concerns an internal combustion engine, in particular with direct injection comprising at least one cylinder (10), one piston (30) sliding in said cylinder, a combustion chamber (26) delimited on one side by the upper side of the piston including a concave trough (32) wherein is arranged a dog point (34) with apex angle (a2) and a fuel injector (22) for injecting fuel at a spray angle (a1) not greater than 2 Arctg CD/2f where CD is the diameter of the cylinder (10) and F the distance between the point of origin of the fuel jets derived from the injector and the position of the piston (30) corresponding to a crankshaft angle of 50° relative to the upper dead center. The invention is characterized in that the apex angle (a2) of the dog point is greater than the spray angle (a1) by an angle ranging between 30° and 60°.
Abstract(Chinese):

本发明涉及内燃机，特别是直接喷射，其包括至少一个气缸（10），在所述气缸中滑动的一个活塞（30），在活塞的上侧限定一侧的燃烧室（26），其包括 凹槽（32），其布置有具有顶角（a2）的爪形点（34）和用于以不大于2Arctg CD / 2f的喷射角（a1）喷射燃料的燃料喷射器（22），其中CD是 气缸（10）的直径，F是从喷射器获得的燃料喷嘴的原点与相对于上死点相对应的曲轴角度为50°的活塞（30）的位置之间的距离。 本发明的特征在于，该爪点的顶角（a2）大于喷雾角（a1）30°至60°之间的角度。

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