To increase air charge of two-stroke cycle engines, relations between delivery ratio and engine speed were investigated on rotary disk-value inlet port engine and on conventional piston-valve inlet port engine by varying through wide limits angle area and timing of inlet port; for inlet port configuration tested, it was found that there was optimum cut angle of rotary disk valve, which produced certain angle area; to improve delivery ratio characteristics at given speed, only timing of inlet port by shifting disk valve around crankshaft had to be changed; for piston-valve inlet port engine, results showed that wide, low port produced higher delivery ratio over entire engine speed range than narrow, high port. (22526)
Study of delivery ratio characteristics of crankcase-scavenged two-stroke cycle engines
SAE Paper
SAE Meeting ; 1969 Scavenging
1969
29 pages
Conference paper
English
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A Study of the Delivery Ratio Characteristics of Crankcase-Scavenged Two-Stroke Cycle Engines
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