Air cleaner with snow bypass valve
US8048179B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2009 |
| Grant date | Nov 1, 2011 |
| Priority date | — |
| Expiry date | Jan 3, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M35/161
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An air cleaner for a motor vehicle includes a housing having an air inlet opening, an air outlet opening, a secondary air inlet opening and at least one peripheral wall defining a chamber therein. An air filter element is provided and received into the chamber and positioned to separate the air inlet opening from the air outlet opening. A vacuum actuated valve is provided in the secondary air inlet opening of the housing and is in communication with a secondary air portion of a dirty face of the filter element. The valve configured and adapted to automatically change from a closed to an open state when a vacuum in the housing increases to a predetermined vacuum value and then to close when the vacuum decreases below the predetermined value, thereby permitting the vehicle engine to continue to operate even though airflow in the primary air intake may be obstructed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.