Research on the Soot Generation of Diesel Surrogate Mechanisms of Different Carbon Chain Length

This paper studies the generation process and emission characteristics of soot from Marine diesel engine. On basis Particulate size mimic (PSM) detailed model, parameters related to obtained reaction mechanism calculation 3 surrogate different carbon chain length: n-heptane, n-tetradecane n-tetradecane-toluene were compared analyzed including precursor soot, quality density particle distribution empirical model. The results show that nucleation stage was slightly more consistent than with experimental results, far n-heptane mechanism. intensity surface growth aggregation is greater, which reflected in precursor: acetylene A4, leads produced by small but large quantity. calculated closer data Then combustion suitable for marine engine, higher temperature smaller equivalent ratio cylinder.