Pcv valve

A method of manufacturing a positive crankcase ventilation (PCV) valve, comprising:

• providing a tubular body that extends along an axis between a first end and a second end, the tubular body having an outer diameter and an inner diameter defining a wall around a central passage that extends through the tubular body and is orthogonal to the axis;
• securing a metering device within the central passage, adjacent the first end;
• and
• positioning a window in the wall between the metering device and second end, wherein the window defines an air flow path through the wall and into the central passage for detecting a disconnection of the PCV valve from the crankcase, and wherein a total area of the window is greater than an open axial area within the metering device when the metering device is in a maximum flow condition.

An engine, comprising:

• a crankcase;
• an air intake;
• and
• positive crankcase ventilation (PCV) valve positioned in fluidic contact between the crankcase and the air intake, the PCV valve including:
• a tubular body extending along an axis between a first end and a second end, the tubular body having an outer diameter and an inner diameter defining a wall around a central passage that extends through the tubular body and is orthogonal to the axis;
• a metering device secured within the central passage, adjacent the first end;
• and
• the wall having a window between the metering device and second end, and the window defines an air flow path through the wall and into the central passage for detecting a disconnection of the PCV valve from the crankcase, wherein a total area of the window is greater than an open axial area within the metering device when the metering device is in a maximum flow condition.