Light-alloy cylinder head for reciprocating piston internal combustion engines
US4543925A · kind A · utility
7Cited by
6References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 29, 1984 |
| Grant date | Oct 1, 1985 |
| Priority date | — |
| Expiry date | Aug 29, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02F2001/247
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In order to be able to enlarge the width of web 13 between adjacent valve seating rings 6 of a light-alloy cylinder head 1 for reciprocating internal combustion engines, an external diameter D1 of valve seating surface 11 at the valve seating ring is selected, which is smaller than the external diameter D2 of the total valve seating surface 7. In order nevertheless to give valve seating ring 6 the required strength, the smallest internal diameter D4 is smaller than the internal diameter D3 of the valve seating surface. Throttling the flow is avoided by a transition from D4 to D3, which is advantageous to flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.