Students Against Driving Drunk: A National Study-Final Report

A scavenge pump in the form of tubular member is connected to the bottom wall of the housing of an engine air particle separator and is shaped to define an annular ejector so that as heated fluid is passed through the annular ejector the portion of the scavenge pump nearest the separator is heated by convection to prevent ice formation and the heated air from the ejector is discharged to form a low pressure region in the tubular member and is passed along the inner wall of the tubular member to prevent ice formation thereagainst, thereby permitting the scavenge of liquid and gases, which may be below the freezing temperature in the low pressure region of the separator, to be discharged through said tubular member due to the operation of the scavenge pump.