Proportional solenoid for purging fuel vapors
US6363920B1 · kind B1 · utility
8Cited by
11References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 2000 |
| Grant date | Apr 2, 2002 |
| Priority date | — |
| Expiry date | May 25, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M25/0836
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An improved regulator valve 10 for controlling the purging of fuel vapors collected in a canister 12 and an evaporative emission control system into an intake system 18 of an internal combustion engine employs a solenoid valve assembly 40 with an armature 86 disposed outside of the coil 58 to operate with low friction. A spring 90 separating the armature 86 from the valve member 98 allows the spring 98 to absorb most of the magnetic and gravitational side loading.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.