PISTON FOR AN INTERNAL COMBUSTION ENGINE

摘要

The invention relates to a piston (10, 110) for an internal combustion engine. Said piston comprises a piston head (11), a piston skirt (12) and a peripheral recess (24) between the piston head (11) and the piston skirt (12), an annular peripheral cooling channel (17), which is open towards the bottom and which is closed by a closing element (18), being provided in the piston head (11), and the piston skirt (12) having fillets (21) which are connected to the bottom of the piston skirt (11) and interconnected via bearing surfaces (23, 123). According to the invention, at least one projection (26, 126) is formed in the region of a free end face (25, 125) of the bearing surfaces (23, 123) and extends radially into a region of the cooling channel (17), said projection matching an opening (19) in the closing element (18) of the cooling channel (17).

主权项

1. Piston (10, 110) for an internal combustion engine, having a piston head (11), a piston skirt (12), and a circumferential recess (24) formed between the piston head (11) and the piston skirt (12), wherein a ring-shaped, circumferential cooling channel (17) open toward the bottom and closed off with a closure element (18) is formed in the piston head (11), wherein the piston skirt (12) has pin bosses (21) connected on the underside of the piston head (11), which are connected with one another by way of working surfaces (23, 123), wherein at least one projection (26, 126) that extends radially all the way into a region of the cooling channel (17) is formed in the region of a free face surface (25, 125) of the working surfaces (23, 123), which projection corresponds with at least one opening (19) in the closure element (18) of the cooling channel (17).