Heated PCV valve and hose assemblies
US7263984B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2002 |
| Grant date | Sep 4, 2007 |
| Priority date | — |
| Expiry date | Oct 10, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01M2013/0472
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A PCV valve assembly including housing having a fluid inlet and outlet. A poppet valve is disposed in the housing between the fluid inlet and outlet and is moveable in an axial direction between a plurality of positions. A heating element having a positive temperature coefficient material is supported in the housing in proximity to at least a portion of the valve for automatically heating the valve in response to a given voltage. The material produces a first heat in response to a first temperature and the given voltage. The material produces a second heat less than the first heat produced in response to the given voltage and a second temperature greater than the first temperature. That is, the positive temperature coefficient material automatically regulates the flow of current and the temperature produced without the need of a thermostat in response to the same voltage. A hose may also be used defining an air passageway and having a length is connected between the fluid outlet and an intake manifold respectively at first and second connections. The hose has a heating element arranged substantially along the length for applying heat to the bare passageway. An electrical device is …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.