Method and apparatus for controlling gasoline vapor emissions
US6478576B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Feb 22, 2001 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Feb 22, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23G7/06
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The present invention combines the gasoline vapor recovery efficiency advantages of a flirt “Partial Seal System”, as disclosed, for example, in U.S. Pat. No. 4,680,004 to flirt, with the customer convenience advantages of gasoline vapor recovery systems employing “bootless” nozzles. The use of bootless nozzles in combination with strict environmental vapor emissions compliance is made possible because of specific system advantages, which include the use of a burner designed to operate at two different flow rates, a coaxial processor stack which permits second and third stage combustion of excess gasoline vapor generated by the system before it is released to atmosphere, and a remote sensor which continually monitors system vacuum pressure to ensure that a sufficient vacuum is maintained at all times. A major advantage of the present system is that the processor unit is adaptable for installation into existing gasoline vapor recovery systems and into other systems, including other manufacturer's systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.