Many air conditioning and refrigeration systems have their condensing units located outdoors for two main reasons. First, this takes advantage of the cooler outdoor ambient temperatures to reject the ...

Migration of refrigerant to the compressor’s crankcase during an off cycle is a serious problem. Significant compressor damage can occur if the problem is not remedied. If refrigerant migration does ...

Crankcase blow-by is hot gases that sneak past the piston rings. As of 2007, the U.S. Environmental Protection Agency limits nonmethane hydrocarbons to 0.14 grams per bhp-hr. Blow-by gases are rich in ...

Every engine has some sort of crankcase breathing system. The internal combustion process creates pressure, some of which makes its way past the piston rings-along with fuel vapors-and into the rest ...

Positive Crankcase Ventilation—three dirty words, but do they really need to be perceived that way? In general, the PCV system has two main functions: vapor relief and liquid separation. PCV systems ...

Improper blow-by control can lead to oily breather and valve covers. Is improper control of blow-by gases in your crankcase causing problems in your engine? If any of these questions below sound ...

Crankcase ventilation is almost provided in all automotive engines. Its prime job is to prevent the dilution of lubricating oil present in crankcase which may lead to corrosion of crankcase metals if ...