Fuel vapor emission control device for an engine
US6453887B1 · kind B1 · utility
9Cited by
8References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2002 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | Mar 5, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel vapor emission control device of an engine 10 includes a canister 4 which adsorbs fuel vapor generated in a fuel tank 1, and a purge valve 11 which opens and closes a pipe 6 connecting the canister 4 and an intake passage 8 of the engine 10. A controller 21 sets a target purge rate according to a difference between a target air-fuel ratio feedback deviation and an actual air-fuel ratio feedback deviation during purge, and drives the purge valve 11 so that the target purge rate is achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.