| 摘要 |
A combustion chamber assembly for use in a diesel engine includes a combustion chamber being defined in a crown of a piston, the combustion chamber having a center portion being elevated relative to a bottom plane of the combustion chamber, the center portion being defined in part by a portion of a convex sphere, the sphere having a radius and an origin, the origin of the radius lying on a piston central axis and the combustion chamber further having an outwardly radially disposed bottom margin, the bottom margin being defined in part by a portion of a concave sphere, the sphere having a radius, the origin of the radius lying on the piston central axis and being greater than the center portion radius. The combustion chamber has a plurality of curved surfaces having smooth transitions between adjacent smooth surfaces, the smooth surfaces including the spherical center portion and the spherical bottom margin in combination with an annular sidewall surface. A piston incorporating the aforementioned combustion chamber and a method of forming the combustion chamber are further included.
|
