燃焼反応抑制物質導入による予混合圧縮着火燃焼の制御とその機構(熱工学,内燃機関,動力など)

概要

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Direct in-cylinder injection of reaction suppressors was effective to successfully control igition timing and suppress rapid combustion in a premixed charge compression ignition (PCCI) engine. The experimental results showed that the reaction suppressor injection significantly recuced the heat release at low-temperature oxidation reactions which suppressed an increase in the charge temperature after the onset of low-temperature oxidation reactions and in the rapid combustion. Chemical kinetic modeling showed a reduction of OH radical concentration before the onset of low temperature oxidation with injection of suppressors. Among the various ignition suppressors, alcohols had a greater impact on OH radical reduction resulting in stronger ignition suppression than other oxygenated and unoxygenated hydrocarbons, water, and hydrogen. The mechanism of the low temperature oxidation suppression with alcohols was considered to be caused by the consumption of OH radical reacting with hydrogen atom in alcohol molecules.
一般社団法人日本機械学会の論文
2003-04-25