Method and system for fuel vapor control
US8434461B2 · kind B2 · utility
20Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2011 |
| Grant date | May 7, 2013 |
| Priority date | — |
| Expiry date | Aug 31, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M25/089
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Methods and systems are provided for operating a fuel vapor recovery system having a fuel tank isolation valve coupled between a fuel tank and a canister. Fuel vapors are purged from the fuel tank to a canister buffer over a plurality of purge pulses. The pulses are adjusted based on the buffer capacity, a purge flow rate, and a fuel tank pressure to improve control of canister loading and reduce air-to-fuel ratio disturbances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.