Piston for an internal combustion engine
AssigneeMahle International GmbH
InventorKlaus Keller
Life of this patent
Estimating the term…
Abstract
The present invention relates to a piston (10) for an internal combustion engine, having a piston head (11) having a piston crown (17), an outer circumferential cooling channel (21), an inner cooling space (22) disposed in the region of the underside (17a) of the piston crown (17), which is closed off with a separate closure element (23) that has at least one outflow opening (25) for cooling oil. According to the invention, it is provided that the closure element (23) and the inner cooling space (22) extend all the way to below the outer circumferential cooling channel (21).
Claims10
A piston for an internal combustion engine, comprising:
- a piston head (11) having a piston crown (17), a ring belt, an outer circumferential cooling channel (21), an inner cooling space (22) disposed in the region of the underside (17a) of the piston crown (17),
- a piston skirt (12) having inner skirt walls (12a), pin bosses (16) that are connected with the underside (17a) of the piston crown (17) by way of pin boss connections (18), and having pin bores (19),
- wherein the inner cooling space (22) is closed off with a separate closure element (23) configured as a separate component fixed to the underside (17a) of the piston crown (17) below the outer circumferential cooling channel, said separate closure element having at least one outflow opening (25) and at least one inflow opening for cooling oil, and wherein the closure element (23) and the inner cooling space (22) extend all the way to the inner skirt walls of the piston skirt, below the outer circumferential cooling channel (21).
Dependencies are inferred from the claim text.