Abstract: A diesel engine fuel injection strategy comprises injecting fuel into a cylinder (28) during a compression upstroke of a piston (30) that reciprocates within the cylinder and creating pressure sufficient to initiate combustion of the injected fuel. As the fuel is combusting, more fuel is injected at a controlled rate of injection to cause further combustion of fuel in a manner that upon substantially peak in-cylinder pressure being attained is effective to prolong that peak in-cylinder pressure such that a trace (62B) of pressure vs. crank angle would contain a distinct plateau (62P) representing the prolonged peak pressure.

Abstract: A combustion chamber assembly for use in a diesel engine, includes a combustion chamber having a lower portion and an upper portion and being defined in a crown of a piston, the combustion chamber lower portion being formed of a plurality of spherical and annular surfaces having smooth annular transitions; and the combustion chamber upper portion having at least one step defining a flat surface and defining a transition between the lower portion and the crown. A piston incorporating the combustion chamber assembly and a method for forming the combustion chamber assembly are further included.

Abstract: A combustion chamber assembly for use in a piston of a diesel engine includes a combustion chamber defined intersecting a crown of the piston, the combustion chamber being defined by a concave surface in cooperation with three convex surfaces, adjacent surfaces having direct smooth junctures. A piston and a method of forming a combustion chamber are further included.

Abstract: A combustion chamber assembly for use in a piston of a diesel engine includes a combustion chamber defined intersecting a crown of the piston, the combustion chamber being defined by three curved surfaces, adjacent surfaces having direct smooth junctures. A piston and a method of forming a combustion chamber are further included.

Abstract: A combustion chamber assembly for use in a piston of a diesel engine includes a combustion chamber being defined intersecting a crown of the piston, the combustion chamber being substantially defined by three surfaces, a post being in part a spherical surface, a bottom and first side portion being an annular surface, and a second side portion being a taper surface, the combustion chamber having at least three reentrancies. A piston incorporating the combustion chamber assembly and a method of forming the combustion chamber are further included.

Abstract: A combustion chamber assembly for use in a piston of a diesel engine includes a combustion chamber defined intersecting a crown of the piston, the combustion chamber being defined by three curved surfaces, adjacent surfaces having direct smooth junctures.

Abstract: A combustion chamber assembly for use in a diesel engine includes a combustion chamber defined in a crown of a piston, the combustion chamber having a center portion, the center portion being defined at least 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 an annulus, the annulus having a radius and an origin. The combustion chamber further has a plurality of curved surfaces having smooth transitions between adjacent smooth surfaces, the smooth surfaces including the spherical center portion and the annular bottom margin. A piston incorporating the aforementioned combustion chamber and a method of forming the combustion chamber are further included.

Abstract: A combustion chamber assembly for use in a piston of a diesel engine includes a combustion chamber being defined in a crown of a piston, the combustion chamber having a center portion, the center portion being defined at least in part by a surface being a portion of a convex sphere to define a post, the sphere having a radius and an origin, the origin of the radius lying on a combustion chamber central axis and the combustion chamber further having an outwardly radially disposed sidewall margin, the sidewall margin being defined in part by an annular surface, the annular surface being concave and having an origin and a radius. The combustion chamber is further defined by an annular bowl lip surface. A piston and a method of forming a combustion chamber are further included.

Abstract: A combustion chamber assembly for use in a piston of a diesel engine includes a combustion chamber being defined in a crown of a piston, the combustion chamber having a center portion, the center portion being defined at least in part by a surface being a portion of a convex sphere to define a post, the sphere having a radius and an origin, the origin of the radius lying on a combustion chamber central axis and the combustion chamber further having an outwardly radially disposed sidewall margin, the sidewall margin being defined in part by an annular surface, the annular surface being concave and having an origin and a radius. The combustion chamber is further defined by an annular bowl lip surface. A piston and a method of forming a combustion chamber are further included.

Abstract: A combustion chamber assembly (and a piston having the 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 central axis, and having a center portion being raised above a bottom plane of the combustion chamber. The center portion of the combustion chamber is defined in part by a portion of a sphere, the sphere having a radius, the origin of the radius lying on the combustion chamber central axis. The combustion chamber has a plurality of curved surfaces having smooth tangential transitions between adjacent smooth surfaces, the smooth surfaces including the spherical center portion in combination with a plurality of annular surfaces. A method of forming a combustion chamber is also included.

Abstract: 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, the center portion being defined at least in part by a portion of a convex sphere to define a post, the sphere having a radius and an origin, the origin of the radius lying on a combustion chamber 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 sphere, the sphere being concave and having an origin and a radius. The combustion chamber has more than two spherical surfaces having smooth annular transitions between adjacent spherical surfaces, the spherical surfaces including the spherical center portion and the spherical bottom margin. A piston and a method of forming a combustion chamber are further included.

Abstract: 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, the center portion being defined at least in part by a portion of a convex sphere to define a post, the sphere having a radius and an origin, the origin of the radius lying on a combustion chamber 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 sphere, the sphere being concave and having an origin and a radius. The combustion chamber has more than two spherical surfaces having smooth annular transitions between adjacent spherical surfaces, the spherical surfaces including the spherical center portion and the spherical bottom margin. A piston and a method of forming a combustion chamber are further included.

Abstract: A flow controller assembly for use with a hydraulically-actuated, electrically-controlled fuel injector, includes a flow controller fluidly disposable intermediate an injector control valve assembly and an injector intensifier assembly for controlling flow of actuating fluid to and from the intensifier assembly to effect rate shaping of an injectable quantity of fuel and to effect a reduction of noise generated by the stopping of return motion of an intensifier piston. A fuel injector and a method of controlling an intensifier piston are also included.

Abstract: A combustion chamber assembly for use in a diesel engine includes a combustion chamber defined in a crown of a piston, the combustion chamber having a center portion, the center portion being defined at least 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 an annulus, the annulus having a radius and an origin. The combustion chamber further has a plurality of curved surfaces having smooth transitions between adjacent smooth surfaces, the smooth surfaces including the spherical center portion and the annular bottom margin. A piston incorporating the aforementioned combustion chamber and a method of forming the combustion chamber are further included.

Abstract: 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.

Abstract: A combustion chamber assembly (and a piston having the 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 central axis, and having a center portion being raised above a bottom plane of the combustion chamber. The center portion of the combustion chamber is defined in part by a portion of a sphere, the sphere having a radius, the origin of the radius lying on the combustion chamber central axis. The combustion chamber has a plurality of curved surfaces having smooth tangential transitions between adjacent smooth surfaces, the smooth surfaces including the spherical center portion in combination with a plurality of annular surfaces. A method of forming a combustion chamber is also included.

Abstract: A combustion chamber assembly for use in a diesel engine includes a combustion chamber being defined in a crown of a piston, the piston having a central axis, the combustion chamber having a center portion being elevated relative to a bottom plane of the combustion chamber. The center portion is defined in part by a portion of a sphere, the sphere having a radius, the origin of the radius lying on the combustion chamber central axis. The combustion chamber further has an outer margin, the outer margin being defined in part by a portion of a sphere, the sphere having a radius, the origin of the radius lying on the combustion chamber central axis and being greater than the center portion radius. The spherical center portion and the spherical outer margin are connected by an annular surface.

Abstract: 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.