Diesel engine piston

摘要

A diesel engine piston having a combustion chamber may include a profile surface that protrudes toward a center axis of the combustion chamber from an inner wall thereof and includes a protrusion on the inner wall, the protrusion extending from the inner wall with a predetermined length, wherein the protrusion divides a spray fuel, which may be sprayed and atomized onto the protrusion, into a fuel flow at an upper portion of the combustion chamber and a fuel flow at a lower portion of the combustion chamber, respectively.

主权项

1. A diesel engine piston having a combustion chamber comprising:
a profile surface that protrudes toward a center axis of the combustion chamber from an inner wall thereof and includes a protrusion on the inner wall, the protrusion extending from the inner wall with a predetermined length; wherein the protrusion divides a spray fuel, which is sprayed and atomized onto the protrusion, into a fuel flow at an upper portion of the combustion chamber and a fuel flow at a lower portion of the combustion chamber, respectively; wherein the profile surface includes:
an inclined portion that is connected to the protrusion and a top of a piston body above the protrusion and forms the upper portion of the combustion chamber, anda bowl rim connected to a base and the protrusion and formed in a recessed arc shape below the protrusion to form the lower portion of the combustion chamber; wherein an end portion of the base is connected to the bowl rim; wherein the other end portion of the base is formed flat and connected a pip, wherein the pip is protruded inward from the base in the combustion chamber; and wherein the inclined portion is a flat straight inclined surface and the protrusion is a flat straight vertical surface opposite to the center axis of the combustion chamber.