LDV를 이용한 토크 컨버터 내 유동의 실험적 분석(Ⅱ) Experimental Analyses of Flow in a Production Torque Converter Using LDV(Ⅱ)
한국기계기술학회지
(韓國機械技術學會誌)
제21권 제4호
(2019.08)
pp.679-684
pp.679-684
한국기계기술학회
(Korean Society of Mechanical Technology)
초록
LDV(laser Doppler velocimetry) measurements were conducted at a total of four planes at 0.4 speed ratio. The speed ratio of 0.4 is 1600rpm of impeller and 633rpm of turbine speed. Even at the speed ratio 0.4, fluid flow at the gap region between the impeller and turbine and impeller exit was leaving the impeller and flowing up behind the turbine, and flows were affected by the turbine blade as it passed, negatively effecting converter efficiency. In the gap region, fluctuations make a clear sinusoidal trend unclear. The rise and fall of the flow rates in a broad sense, indicate a dependency based on the passage of the turbine blade in front of the impeller passage exit but a sinusoidal trend is not evident from this data.
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