401 燃料温度が圧縮着火機関の着火及び機関性能に及ぼす影響

概要

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The purpose of this study is to improve the engine performance and the exhaust gas emission characteristics of the diesel engine. The heated fuels are provided for the diesel engine in order to activate the fuel. The test engine is a four-stroke, direct fuel injection, diesel engine. The experiment is made under constant engine speed and const fuel injection volume. For an arbitrary mass flow rate of fuel injection, the fuel temperature is increased from 373 [K] to 673 [K] at 50 [K] intervals. The crank angles at ignition and maximum combustion pressure are delayed and the maximum combustion pressure is decreased as the fuel temperature rises. In cases of middle and large mass flow rate of fuel injection, the burning period is reduced and the brake thermal efficiency is decreased when the fuel temperature is higher than 573 [K]. However, NO_x concentration is gradually decreased as fuel temperature increases.
一般社団法人日本機械学会の論文
2002-03-14