吸気の絞りによるクランク室圧縮二サイクルディーゼル機関の始動の助け

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  • Starting Aid by Inlet Throttling in a Crankcase Scavenged Two-cycle Diesel Engine
  • キュウキ ノ シボリ ニ ヨル クランクシツ アッシュク ニ サイクルディーゼル キカン ノ シドウ ノ タスケ

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In the previous paper the temperature rise due to throttling was applied to a starting aid in a four-cycle Diesel engine. To apply the same method to the crank case scavenged two-cycle diesel engine, theoretical calculation and measurement of the scavenge air temperature has been performed for the various throttle ratios which contain throtle area, piston area and piston speed. Results obtained are summerised as follows : (1) The scavenge air temperature rises as the throttle ratio decreases.(2) For the limited number of cranking, the temperature rise becomes maximum at a proper throttle ratio.(8) For the same throttle ratio, the temperature rise in a engine of piston port type is twice as high as in that of automatic valve type.

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