直噴式ディーゼル機関における燃焼および畷射系の諸元と微粒子および未燃炭化水素の排出特性

概要

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This paper investigates the effects of combustion and infection systems on HC and particulate emissions from a DI diesel engine with a dish type combustion chamber. Diesel particulate was sampled using a mini-dilution tunnel. Gaseous HC was analysed with gas chromatography, and the PAH in SOF in the particulates was measured with liquid chromatography. The results show that the emission characteristics of the deep dish type chamber greatly differs from those of the shallow dish type chamber, depending on the number of nozzles, injection direction, and swirl intensity. The HC analysis shows that the main constituents of gaseous HC are carbon number HC, and there is a tending towards increasing polynucleation PAH in SOF corresponding to the increase in soot formation. Additionally it was found that the particulate concentration can be expressed as an exponential function of the Bosch smoke density for a wide range of engine combustion conditions.
一般社団法人日本機械学会の論文
1986-06-25