It vents the gasses that form inside the crankcase to the intake. It is a small round valve located on the top of the valve cover. They are inexpensive and easy to replace.
open crankcase ventilation and closed crankcase ventilation.
In pre-PCV (Positive Crankcase Ventilation) vehicles, that was a term for the crankcase ventilation pipe.
positive crankcase ventilation
I believe you are talking about a PCV valve. PCV means Positive Crankcase ventilation.
That would be part of the crankcase ventilation system. I guess you could call it the air filter housing to engine crankcase ventilation tube.
To find the positive crankcase ventilation valve, look on the right bank of the engine. The valve is located beneath the intake manifold.
Be sure the PCV (Positive Crankcase Ventilation) system is in good working order.
PCV is positive crankcase ventilation
The positive crankcase ventilation valve on a 2002 Mercury Cougar is located on top of the engine; in the valve cover. It removes harmful fumes from the engine.
A PCV valve is for positive crankcase ventilation. It is to keep crankcase pressure from building up in the engine. If it does it can cause seal leakage, air filter contamination and engine blowby.
Air is pulled into the crankcase from the PCV (positive crankcase valve) the fresh air enters through this filter to keep dirt from being sucked into the crankcase. This filter is usually located inside the air filter housing.
Positive Crankcase Ventilation Answer 2: The Positive Crankcase Ventilation (PCV) system reduces hydrocarbon emissions by scavenging crankcase vapors. It does this by circulating fresh air from the air cleaner through the crankcase, where it mixes with blow-by gases and is then rerouted through a PCV valve to the intake manifold. - Haynes Repair Manual #36071