2ストロークHCCIエンジンの燃焼完結性に関する研究 : 排出ガスの組成と排出機構についての調査(熱工学,内燃機関,動力など)

概要

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In this study, the exhaust gas composition was clarified by using a gas chromatography, and combustion completion was considered in 2-stroke HCCI engine. In exhaust gas composition, n-Butane was high concentration as opposed to calculation results and intermediate products (CO, C_2H_4, C_3H_6, CH_4, C_2H_6) also exhausted. Increasing maximum in-cylinder gas temperature until 1600K, combustion efficiency became higher and HC emissions became lower, but over 1600K, combustion efficiency kept constant 82±3% and HC emissions became higher again. In actual engine, it was considered that mixture near cylinder wall couldn't be ignited because of heat loss to wall. This region was almost 0.83-1.01mm from wall by calculated from exhaust gas composition and concentration by 2 models. And the ratio of exhaust n-butane from heat loss to wall in exhaust n-butane is about 79%, from crevice is about 1%, from leak is about 20%.
一般社団法人日本機械学会の論文
2004-11-25