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EFFECT OF THE DIFFERENTIAL PRESSURE BY THE BLOW-BY GAS FLOW ON THE PCV VALVE WITH A CRACK  

Song, S.M. (Graduate School, Department of Safety Engineering, Pukyong National University)
Kwon, O.H. (Division of Safety Engineering, Pukyong National University)
Lee, Y.W. (Division of Mechanical Engineering, Pukyong National University)
Publication Information
International Journal of Automotive Technology / v.8, no.2, 2007 , pp. 219-224 More about this Journal
Abstract
Recently, atmospheric contaminations has become worse due to the increased number of automobile. The PCV (Positive Crankcase Ventilation) valve acts as a flow control to allow re-combustion of blow-by gas by having it flow from a crankcase to an inlet manifold suction tube. Also, during the fabrication of the PCV valve, micro cracks may occur in the valve body and be extended under operation. The excessive stress distribution and crack initiation on the PCV valve body would bring an unstable blow-by gas flow rate control and would cause valve failure. The purpose of this study is to examine the crack affects on the stress and strain variations on the PCV valve according to the inlet and outlet manifold under differential pressures. From the results, we can explain the behavior of the crack extension for a safe condition of PCV valve.
Keywords
PCV valve; Blow-by gas; Crack extension; Finite element analysis; Differential pressure; Stress and strain variation; Stress intensity factor;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By Web Of Science : 0  (Related Records In Web of Science)
Times Cited By SCOPUS : 1
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