Patent ID: 9163580
Filing Date: 2015-10-20
Classification: F02F,F05C,Y10T

Abstract:
1. A piston for an internal combustion engine, having a piston base body and a piston ring element, whereby the piston base body has at least an inner region of a piston crown as well as a piston skirt, which is provided with pin bosses having pin bores, whereby the piston ring element has at least an outer region of a piston crown having a circumferential top land, and a circumferential ring belt provided with ring grooves, wherein the piston crown has a combustion chamber bowl, wherein the piston base body and piston ring element jointly form a circumferential cooling channel, wherein piston base body and piston ring element are joined together by way of corresponding, conical inner and outer joining surfaces configured on them, wherein the outer joining surface of the piston ring element is located below the ring belt, wherein the inner joining surface of the piston base body encloses the inner region of the piston crown, wherein the inner joining surfaces form an acute angle α relative to a vertical piston axis, wherein the outer joining surfaces form an acute angle β relative to said vertical piston axis, and wherein β is larger than α.