breather

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breather

a vent in a container to equalize internal and external pressure, such as the pipe in the crankcase of an internal-combustion engine

Breather

 

a device for connecting the interior of a crank-case with the atmosphere. Breathers prevent the buildup of pressure within the crankcase and the attendant extrusion of oil through leaks; they also prevent dust from being sucked into the crankcase. A filter is installed to purify the air passing through the breather.

breather

A vent in any engine lubrication system that keeps the pressure within equal to ambient atmospheric pressure. Often used with oil tanks, crankcases, etc.
References in periodicals archive ?
Of mouth breathers surveyed, 54 percent reported they did not get a good night's sleep the night before.
TCD engines typically require four to five ducts versus the current two to three: Crankcase breathers, air-charger inlets, air-charger returns, and other ducts are targets for 3D blow molding.
I was basically just out there to give guys breathers or someone got hurt,'' said Bethea, who is Cal's top kickoff returner and a special-teams leader.
A team of friends, the Heavy Breathers, are taking a well-earned rest after they successfully beat 198 other teams.
CMW's design goal from the start was to avoid the bulky, 'stuck on' appearance of conventional PCVs and breathers normally seen on engines that must use either one or both.