Limiting delivery ratio curves of crankcase-scavenged 2-stroke cycle engines (By throttling the inlet port)

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  • クランク室掃気二サイクル機関の限界給気比曲線について（吸気口を絞っていった場合）
  • クランクシツ ソウキ 2 サイクル キカン ノ ゲンカイ キュウキヒ キョクセ

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In order to obtain the limiting delivery ratio curve, the relation-ships between delivery ratio and engine speed were investigated on the crankcase-scavenged 2 stroke-cycle engines by varing through wide limits the effective time area of the inlet ports. It was found that the mean inlet Mach number Mim already reported by the authors using the 4 stroke-cycle engines showed well the characteristics of limiting delivery ratio and when Mim approached a limit value the delivery ratio decreased hyperbolically with an increase in engine speed.

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