In order to obtain the limiting delivery ratio curve, the relationships between the delivery ratio and the engine speed were investigated on crankcase-scavenged 2-stroke cycle engines by varying through wide limits the effective angle-areas Fia(e) of the inlet ports.It was found that the mean inlet Mach number Mim, already reported by the authors using 4-stroke cycle engines, showed well the characteristics of the limiting delivery ratio, and when Mim approached a limiting value the delivery ratio decreased hyper-bolically with an increase in engine speed.
Limiting Delivery Ratio Curves of Crankcase-Scavenged 2-Stroke Cycle Engines by Throttling the Inlet Port
Sae Technical Papers
SAE International Congress and Exposition ; 1986
01.02.1986
Aufsatz (Konferenz)
Englisch
Study of delivery ratio characteristics of crankcase-scavenged two-stroke cycle engines
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