Hollow valve for internal combustion engines
US6006713A · kind A · utility
20Cited by
7References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 19, 1998 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Aug 19, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L3/14
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A hollow valve for internal combustion engines, comprising a valve body having a disk, a hollow throat region and a stem component, wherein the valve body is designed in the form a deep-drawn metal part made of austenitic metal. There is a stem end piece welded to the stem component of the valve body and a cover welded to the disk. The valve body, end piece and cover enclose a hollow space extending from the stem end piece into the disk. This valve is considerably lighter in weight than traditional valves, and is capable of lowering the temperature of the valve when the hollow space is filled with a coolant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.