Invention Grant
- Patent Title: Rotor recess with scupper slots and free casting
- Patent Title (中): 转子凹槽带有切屑槽和自由铸件
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Application No.: US11722608Application Date: 2005-11-29
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Publication No.: US07730828B2Publication Date: 2010-06-08
- Inventor: Emmerich Ottliczky , Franz Ratzky , Norbert Ries
- Applicant: Emmerich Ottliczky , Franz Ratzky , Norbert Ries
- Applicant Address: DE Neckarsulm
- Assignee: KS Kolbenschmidt GmbH
- Current Assignee: KS Kolbenschmidt GmbH
- Current Assignee Address: DE Neckarsulm
- Agency: YoungBasile, PC
- Priority: DE102004061777 20041222
- International Application: PCT/EP2005/012708 WO 20051129
- International Announcement: WO2006/072293 WO 20060713
- Main IPC: F01B31/08
- IPC: F01B31/08

Abstract:
A piston for an internal combustion engine includes a piston head provided with an annular field, and a piston shaft arranged beneath the annular field. The piston shaft has shaft surfaces and a recess surface which is arranged around a bolt borehole and set back in relation to an outer diameter of the piston. At least one cavity is provided in the region of the lowest annular groove for oil flow in the direction of the recess surface during the movement of the piston and the at least one cavity is arranged outside an especially stressed region above the bolt borehole.
Public/Granted literature
- US20080202330A1 Rotor Recess With Scupper Slots and Free Casting Public/Granted day:2008-08-28
Information query
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