Valve seat insert for engine having double-crowned seating surface profiled for limiting valve recession
US10934899B2 · kind B2 · utility
24Cited by
3References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2018 |
| Grant date | Mar 2, 2021 |
| Priority date | — |
| Expiry date | Jan 15, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K25/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A valve seat insert for a gas exchange valve controlling gas exchange of a cylinder includes an insert body having an inner peripheral surface, an outer peripheral surface, and a valve seating surface structured to contact the gas exchange valve at a closed position and profiled to limit valve recession thereof. The valve seating surface includes an arrangement of linear segments and curved segments forming crowns to contact the gas exchange valve at different wear states.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.