Invention Grant
- Patent Title: Multi-part piston for an internal combustion engine and method for its production
- Patent Title (中): 用于内燃机的多部件活塞及其生产方法
-
Application No.: US12587960Application Date: 2009-10-15
-
Publication No.: US08371261B2Publication Date: 2013-02-12
- Inventor: Rainer Scharp , Klaus Keller , Volker Weisse
- Applicant: Rainer Scharp , Klaus Keller , Volker Weisse
- Applicant Address: DE Stuttgart
- Assignee: MAHLE International GmbH
- Current Assignee: MAHLE International GmbH
- Current Assignee Address: DE Stuttgart
- Agency: Collard & Roe, P.C.
- Priority: DE102008055910 20081105; DE102009032865 20090714
- Main IPC: F02F3/00
- IPC: F02F3/00 ; F02F3/22

Abstract:
A multi-part piston for an internal combustion engine has an upper piston part having a piston crown, and a lower piston part. The lower piston part has pin boss supports and pin bosses connected with them and the upper piston part and the lower piston part each have an inner and an outer support element, which elements delimit an outer circumferential cooling channel. The inner support elements delimit a cavity that is open toward the pin bosses. The cavity has a separate cooling oil collector that has at least one cooling oil opening. The piston is produced by manufacturing the upper piston part and lower piston part, inserting the cooling oil collector into the upper piston part or lower piston part, and joining the upper and lower piston parts together by friction welding.
Public/Granted literature
- US20100108000A1 Multi-part piston for an internal combustion engine and method for its production Public/Granted day:2010-05-06
Information query