Evaporative emission control system
US4446838A · kind A · utility
24Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1982 |
| Grant date | May 8, 1984 |
| Priority date | — |
| Expiry date | Nov 30, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2025/0845
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In an evaporative emission control system of a motor vehicle, a two way valve is provided for connecting the canister with the air-fuel mixture intake tube of the engine when assuming a first position and connecting the canister with the clean side of the air cleaner when assuming a second position. The two way valve assumes the first position when the interior condition of the fuel tank does not tend to saturate the vapor adsorbing power of the canister, and assumes the second position when the interior condition of the fuel tank tends to saturate the vapor adsorbing power of the canister.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.