Anti-ingestion system for a marine drive
US8317557B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2010 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | May 20, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2590/02
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An anti-ingestion system is provided for a marine drive with a submerged exhaust outlet. An anti-ingestion valve is operated by differential pressure thereacross to a closed condition when the engine is operating in an on state and cooling water is being pumped through a water conduit to an exhaust mixing point, with the anti-ingestion valve blocking passage of cooling water therepast in the noted closed condition. The anti-ingestion valve is operated by differential pressure thereacross to an open condition when the engine is in an off state, and permits passage of air therethrough and communicates atmospheric pressure through the water conduit to the exhaust mixing point to relieve vacuum in the exhaust system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.