Dual purge system for vehicle
US10823119B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 8, 2019 |
| Grant date | Nov 3, 2020 |
| Priority date | — |
| Expiry date | May 8, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K2015/03514
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present disclosure relates to a dual purge system for a vehicle, which varies a purging amount depending on a pressure condition of an intake manifold surge tank to realize desired purging efficiency suitable for a vehicle driving range. In the dual purge system, by desorbing fuel evaporation gas from all canisters in a state of engine negative pressure, a purging amount increases thereby improving fuel efficiency, and by desorbing the fuel evaporation gas from some canisters in a state of engine positive pressure, flow resistance of the gas is reduced in comparison with previous flow resistance thereby increasing desorption efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.