Piston for an internal combustion engine and method for its production
First Claim
1. Piston (10) for an internal combustion engine, having a piston head (10a), a piston skirt (15), and a circumferential recess (25) configured between the piston head (10a) and the piston skirt (15), whereinthe piston (10) has a piston base body (11) and a piston ring element (12),the piston base body (11) has a crown region (19a) of a combustion bowl (19) as well as the piston skirt (15),the piston ring element (12) has a piston crown (21), a wall region (19b) of the combustion bowl (19), a circumferential top land (22), and a circumferential ring belt (23) provided with ring grooves,the piston ring element (12) has a circumferential cooling channel (27) between the wall region (19b) of the combustion bowl (19) and the ring belt (23), closed with a closure element (26),the piston base body (11) and the piston ring element (12) have a circumferential joining seam (28) between the wall region (19b) and the crown region (19a) of the combustion bowl (19), in each instance, by way of which seam they are non-releasably connected with one another,the joining seam (28) forms an acute angle (α
- ) with the longitudinal axis (M) of the piston (10).
1 Assignment
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Accused Products
Abstract
A piston for an internal combustion engine has a piston head, a piston skirt, and a circumferential recess configured between the piston head and the piston skirt. The piston has a piston base body and a piston ring element. The piston base body has a crown region of a combustion bowl and the piston skirt. The piston ring element has a piston crown, a wall region of the combustion bowl, a circumferential top land, and a circumferential ring belt with ring grooves. The piston ring element has a circumferential cooling channel between the wall region of the combustion bowl and the ring belt, closed with a closure element. The piston base body and the piston ring element have a circumferential joining seam in the region of the combustion bowl, by way of which seam they are non-releasably connected with one another.
16 Citations
7 Claims
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1. Piston (10) for an internal combustion engine, having a piston head (10a), a piston skirt (15), and a circumferential recess (25) configured between the piston head (10a) and the piston skirt (15), wherein
the piston (10) has a piston base body (11) and a piston ring element (12), the piston base body (11) has a crown region (19a) of a combustion bowl (19) as well as the piston skirt (15), the piston ring element (12) has a piston crown (21), a wall region (19b) of the combustion bowl (19), a circumferential top land (22), and a circumferential ring belt (23) provided with ring grooves, the piston ring element (12) has a circumferential cooling channel (27) between the wall region (19b) of the combustion bowl (19) and the ring belt (23), closed with a closure element (26), the piston base body (11) and the piston ring element (12) have a circumferential joining seam (28) between the wall region (19b) and the crown region (19a) of the combustion bowl (19), in each instance, by way of which seam they are non-releasably connected with one another, the joining seam (28) forms an acute angle (α - ) with the longitudinal axis (M) of the piston (10).
- View Dependent Claims (2, 3, 4, 5, 6, 7)
Specification