Method and system for a vehicle evaporative emissions control system
US11333112B2 · kind B2 · utility
0Cited by
7References
18Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 21, 2020 |
| Grant date | May 17, 2022 |
| Priority date | — |
| Expiry date | Oct 21, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods and systems are provided herein for a dust box cleanout routine of an evaporative emissions control (EVAP) system of a vehicle. In one example, a method is provided for an engine of a vehicle, comprising, during travel on an unpaved road, selectively discharging a dust box housed in a vent line of an evaporative emissions control (EVAP) system by opening a discharge valve of the dust box leading to atmosphere. In this way, an accumulation of dust on the air filter and in the dust box of the EVAP system may be reduced, thereby maintaining an efficiency of the EVAP system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.