Thermal Effect upon Air Capacity of the Four-Stroke Engine : 1st Report, Thermodynamical Analysis Method

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概要

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• The temperature changes of the mixture gas in the induction process are given using the following notation : ΔT_1 : Vaporization of fuel, ΔT_2 : Ram effect, ΔT_3 : Preheating for intake mixture, ΔT_4 : Heat transfer from high temperature parts, ΔT_5 : Mixing with residual gas. The change ΔT_5 has almost no effect on air capacity, but ΔT_2,ΔT_3 and ΔT_4 change with engine types, operation and atmospheric conditions. Report No. 1 has expressed the sum of ΔT_2,ΔT_3,and ΔT_4 (called ΔT_<2,3,4>) as a function of the directly measurable intake mixture gas weight and the cylinder pressures. The suction end temperature T_1 is a function of ΔT_<2,3,4> and pressures needed for thermodynamical analysis. It has become possible to determine each of the changes ΔT_1 to ΔT_5 analytically. Finally the relationship between the air capacity and various temperature rises of the mixture gas is expressed theoretically.

• 一般社団法人日本機械学会の論文

著者

• Gomi Tsutomu

  Faculty Of Science And Engineering Sophia University.

関連論文

• Thermal Effect upon Air Capacity of the Four-Stroke Engine : 1st Report, Thermodynamical Analysis Method
• Thermal Effect upon Air Capacity of the Four-Stroke Engine : 2nd Report, Results of Experimental Analysis

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