Fuel weathering method for vehicle evaporative emission system
US6435164B1 · kind B1 · utility
35Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2000 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Dec 7, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/63
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A fuel weathering method for an evaporative emission system of a motor vehicle includes determining a current temperature of liquid fuel inside the evaporative emission system, determining a fuel residency time representing the amount of time the fuel has resided above the current temperature, and performing a system diagnostic test of the evaporative emission system only if the fuel residency time exceeds a minimum fuel residency time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.