【摘要】 高温条件下甲醇喷雾的燃烧特性杨长林，舒国才，刘月辉，王懿铭（天津大学内燃机燃烧学国家重点实验室天津３０Ｏ０７２）关键词高温环境，甲醇喷雾，燃烧特性１前言甲醇作为一种内燃机代用燃料，已经受到了人们的广泛重视，但由于甲醇的十六烷值低，着人性能差，因此在柴...更多还原

【Abstract】 In constant volume bomb, the high speed photography was employed to observe the ignition and combustion process of methanol spray at different ambient temperature. The experimental results of methanol spray were contrasted with diesel one. As ambient temperatureincreased, tile penetration of methanol spray decreased and the spray cone angle increased.At the same temperature, methanol spray had less penetration and larger spray cone anglethan diesel spray. As ambient temperature increased, the ignition delay of methanol spraybecome short. But at the same temperature, methanol spray showed much longer ignitiondelay and more amount of pre-mixed combustion than diesel spray . The ignition point ofmethanol spray located on the middle part and the spray was not enveloped by the flame.After combustion started, methanol spray had larger spray volume volume and more amount of airentrainment than diesel spray. At high temperature,methanol spray had higher initial heatrelease rate and shorter combustion duration. Unlike diesel spray, there was almost no sootgenerated during combustion period in methanol spray.更多还原