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Characteristics of Flow Coefficients in an Engine Cylinder Head with a Quasi-steady Flow Condition by Continuous Variation of the Valve Lift  

Oh, Dae-San (Department of Automotive Engineering, Seoul National University of Science and Technology)
Lee, Choong-Hoon (Department of Automotive Engineering, Seoul National University of Science and Technology)
Publication Information
Journal of the Korean Society of Safety / v.25, no.6, 2010 , pp. 22-27 More about this Journal
Abstract
Flow Coefficients of intake port in an engine cylinder head were measured by a newly designed flow rig. In measuring the flow coefficient with traditional method, the valve lift was manually varied by technician with adjusting a micrometer which is directly connected to the intake valve of the cylinder head. The cam shaft of the cylinder head is directly rotated by a step motor and the valve lift was automatically varied with cam shaft profile in the newly designed flow rig. The measurement of the flow coefficient was automated by rotating the cam shaft with the step motor. Automatic measurement of the flow coefficient could be safely measured by separating a technician from the noise and vibration of the traditional flow rig. Also, the automatic measurement of the flow coefficient reduce the measurement time and provide meaningful statistical data.
Keywords
flow coefficient; cylinder head; intake port; valve seat diameter; valve lift; cam profile; automation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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