Parker Hannifin

Parker Hannifin’s Racor division recently designed an emissions filter that enables diesel engine manufacturers to meet new emission requirements. The company used its Fortus FDM system to create a PPSF (polyphenylsulfone) prototype of the filter. The filter, called a crankcase vapor coalescer, was used for functional design testing. The PPSF prototype was durable enough to mount directly on the valve cover of a 6.0-liter V8 diesel engine and test at various loads for 78 hours. “The prototype filter collected blow-by gases containing 160°F (71°C) oil, fuel, soot, and other combustion by-products,” says Racor senior development engineer Russ Jensen. “It withstood the operating environment and heat of the engine.”

PPSF prototype mounted on V8 engine.

PPSF prototype mounted on V8 engine.

“Vibration affects filter efficiency, so it was important to mount the prototype directly on the engine for accurate testing.”

Russ Jensen, Parker Hannifin-Racor