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A Study of Internal EGR Distribution Measurements in an Engine Cylinder (2nd Report)~Internal EGR Behaviors in Whole Engine Cycle
Published May 23, 2007 by Society of Automotive Engineers of Japan in Japan
Event: JSAE Spring Conference
"Tracer Producing LIF technique" described in the 1st report was applied to the visualized engine, in which whole pent-roof area can be observed from the engine side direction. Internal EGR behaviors have been measured from suction to exhaust in while engine cycle. As a result, gas exchange process between burned gas and air, as well as the influence of the valve timing on the above process were clarified. It was also confirmed that inhomogeneous internal EGR distribution still existed at the ignition timing for the first time.