Gas exchange valve of an internal combustion engine
US7603976B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 1, 2006 |
| Grant date | Oct 20, 2009 |
| Priority date | — |
| Expiry date | Oct 4, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L3/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
With a gas exchange valve of an internal combustion engine having a hollow valve shaft (1) and valve disk (7), wherein the valve disk (7) has a valve tray (5) and a valve cone (6) connected to the outer edge thereof, whereby the valve cone (6) tapers with an increase in distance from the valve tray (5); the hollow valve shaft (1), passing completely through the space surrounded by the valve cone (6), is fixedly connected to the valve tray (5) at one end and at the other end is fixedly connected to the tapering end of the valve cone (6); the valve shaft (1) has parts telescoping into one another, namely a lower shaft part (3) facing the valve tray (5) and an upper shaft part (2) connected thereto, whereby the lower shaft part (3) engages in a form-fitting manner in the upper shaft part (2); and the upper shaft part (2) and the lower shaft part (3) are joined in a shaft connecting area (4), in particular by being welded together; coke deposits in the areas of the valve facing away from the combustion chamber, such deposits being promoted there due to interfering edges in the flow, are to be prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.