Heated PCV valve and hose assemblies

Details Heated PCV valve and hose assemblies Heated PCV valve and hose assemblies

2007-09-04

2007-09-04

McMahon, Marguerite (Department: 3747)

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

Reexamination Certificate

active

10487057

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 connected to the heating element for providing power to the heating element to generate heat. In this manner, air entering the intake manifold in proximity to the throttle blade is heated to maintain a higher temperature to prevent blade icing.

REFERENCES:
patent: 5758826 (1998-06-01), Nines
patent: 5970962 (1999-10-01), Nelson et al.
patent: 6044829 (2000-04-01), Butz et al.
patent: 6102303 (2000-08-01), Bright et al.
patent: 6478043 (2002-11-01), Ishigaki
patent: 6546921 (2003-04-01), Callahan

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