混合気中の湿度が燃焼におよぼす影響 : 第2報, 燃焼期間および点火遅れにおよぼす影響

概要

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The Humidity in a mixture make delay times (Flame propagation delay : τ_<dp>, Total ignition delay : τ_t = τ_<df>τ_<dp>) and total combustion period (τ_<pmax>) long. τ_<df> was determined by the record of the ion current, τ_<dp> and τ_<pmax> were determined by the indicated pressure diagram in the constant volume combustion chamber. the results are as follows : 1) The ignition delay time takes the minimum value around φ =1.15. 2) τ_<df> andτ_t time increased according to the increases of the concentration of dilution gases, because the adiabatic flmae temperature decreased due to the increases of the heat capacity. But dilution gases have little effect on flame nucleus formation delay. 3) The relation between τ_t time and the reciprocal of the laminer burning velocity is almost linear. 4) The larger the propagation length, the more was rate of changeτ_<df>, τ_<dp>, τ_t, τ_<pmax> by dilution gases addition ratio.
一般社団法人日本機械学会の論文
1988-02-25