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Piston for an internal combustion engine and method for its production

  • US 9,322,358 B2
  • Filed: 07/22/2014
  • Issued: 04/26/2016
  • Est. Priority Date: 03/04/2011
  • Status: Expired due to Fees
First Claim
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1. A method for the production of a piston for an internal combustion engine, the piston having a piston base body and a piston ring element and a ring-shaped recess configured between a piston head and a piston skirt, the method comprising the following steps:

  • (a) making available a blank of a piston base body that has a crown region of a combustion bowl, the piston skirt, as well as a circumferential joining surface delimiting the crown region of the combustion bowl and forming an acute angle a with the longitudinal axis of the piston;

    (b) making available a blank of a piston ring element that has at least a piston crown, a ring belt portion, a wall region of a combustion bowl, a circumferential recess between the wall region of the combustion bowl and the ring belt portion, as well as a circumferential joining surface delimiting the wall region of the combustion bowl and forming an acute angle a with the longitudinal axis of the piston; and

    (c) connecting the blank of the piston base body with the blank of the piston ring element by way of their joining surfaces, to produce a piston blank.

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