Patent ID: 7263984
Filing Date: 2007-09-04
Classification: F01M,F16L

Abstract:
1. A positive crankcase ventilation valve assembly comprising: a housing having a fluid inlet, a fluid outlet and an intermediate portion between the fluid inlet and the fluid outlet; a poppet valve disposed in said housing between said fluid inlet and said fluid outlet and movable in an axial direction between a plurality of positions; and a tubular heating element arranged about at least a portion of the value, and having a positive temperature coefficient material within said intermediate portion that is supported by said housing in proximity to at least a portion of said valve for automatically heating said valve in response to a given voltage, said positive temperature coefficient material producing a first heat in response to a first temperature and said given voltage and producing a second heat in response to a second temperature and said given voltage, wherein said second heat is less than said first heat and said second temperature is greater than said first temperature.