Invention Grant
US09243582B2 Complex-shaped piston oil galleries with piston crowns made by cast metal or powder metal processes
有权
具有活塞冠的复式活塞油画廊由铸造金属或粉末金属工艺制成
- Patent Title: Complex-shaped piston oil galleries with piston crowns made by cast metal or powder metal processes
- Patent Title (中): 具有活塞冠的复式活塞油画廊由铸造金属或粉末金属工艺制成
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Application No.: US14182165Application Date: 2014-02-17
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Publication No.: US09243582B2Publication Date: 2016-01-26
- Inventor: Norbert G. Schneider
- Applicant: Federal-Mogul Corporation
- Applicant Address: US MI Southfield
- Assignee: Federal-Mogul Corporation
- Current Assignee: Federal-Mogul Corporation
- Current Assignee Address: US MI Southfield
- Agency: Dickinson Wright, PLLC
- Agent Robert L. Stearns
- Main IPC: F02F3/18
- IPC: F02F3/18 ; B21K1/18 ; F02F3/00 ; F02F3/22 ; F02B23/06
Abstract:
A steel piston with an oil gallery, and process for forming a steel piston oil gallery channel, which corresponds to the complex shape of the combustion bowl in the piston crown. The piston crown is made by a cast metal or powder metal forming process. The oil gallery channel is formed to the basic shape that corresponds to the shape of the walls of the combustion bowl. Machine-turning surfaces in the oil gallery channel can be machine-finished as desired. Surfaces in the oil gallery which cannot be machined with conventional turning operations, such as recesses and protrusions into the channel, are left in the original as-formed condition.
Public/Granted literature
- US20140230774A1 Complex-Shaped Piston Oil Galleries With Piston Crowns Made By Cast Metal or Powder Metal Processes Public/Granted day:2014-08-21
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