Invention Grant
- Patent Title: Steel piston for an internal combustion engine and method for its production
- Patent Title (中): 用于内燃机的钢活塞及其生产方法
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Application No.: US14516226Application Date: 2014-10-16
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Publication No.: US09581104B2Publication Date: 2017-02-28
- Inventor: Monika Lehnert , Reinhard Rose , Juergen Ramm , Beno Widrig
- Applicant: Mahle International GmbH , Oerlikon Trading AG, Truebbach
- Applicant Address: DE CH
- Assignee: Mahle International GmbH,Oerlikon Surface Solutions AG, Pfäffikon
- Current Assignee: Mahle International GmbH,Oerlikon Surface Solutions AG, Pfäffikon
- Current Assignee Address: DE CH
- Agency: Fishman Stewart PLLC
- Priority: DE102013221102 20131017
- Main IPC: B32B15/04
- IPC: B32B15/04 ; F02F3/00 ; C23C14/02 ; C23C14/06 ; C23C28/04 ; C23C28/00 ; F02F3/14 ; B23P15/10 ; F02F3/10
Abstract:
A steel piston for an internal combustion engine may include a piston crown and a protective layer disposed on the piston crown. The protective layer may include an adhesion layer of Cr or CrN, which is present on a surface of the piston crown. The protective layer may include a functional layer, which is present on the adhesion layer. The functional layer may have at least one of (i) at least one layer (A) of CrN and (ii) at least one layer (B) of CrOn in the form of [(A)/(B)]a, and a may represent 1 to 100.
Public/Granted literature
- US20150107544A1 STEEL PISTON FOR AN INTERNAL COMBUSTION ENGINE AND METHOD FOR ITS PRODUCTION Public/Granted day:2015-04-23
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