Engine Performance and Exhaust gas Characteristics When Operated with Dimethyl Ether (DME)
Engine Performance and Exhaust gas Characteristics When Operated with Dimethyl Ether (DME)
复制标题
使用二甲醚 (DME) 时的发动机性能和废气特性
DOI：
10.5988/jime.40.6_761
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
S. Kajitani
中科院分区：
文献类型：
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作者：
S. Kajitani
世界人口的增加以及世界经济（尤其是亚洲）的随之增长，产生了对额外能源的需求，而这不应以二氧化碳排放为代价。利用生物质生产的燃料可以解决这个问题。二甲醚 (DME) 是一种很有前途的燃料，因为它排放清洁，且将其商业化用于轻型和重型卡车的技术问题相对较少。最新20吨卡车的排放符合2005年后挑战法规（即09法规，NOx：0.23g/kWh，PM：0.01g/kWh）。 DME 的沸点较低（-24.8C），因此需要使用混合燃料来保证船用发动机的安全。混合燃料（30% DME 和 70% 棕榈油）的粘度接近柴油燃料的粘度，具有与柴油燃料相似的性能。混合燃料中较高的二甲醚含量可减少发动机产生的烟灰。燃烧室内的积碳应使用纯净或高含量的DME混合燃料来燃烧。
The increase in world population and the concomitant growth in world economy especially in Asia has created a necessity for additional energy which should not come at the cost of CO2 emission. The situation can be solved by making use of fuel produced from biomass. Dimethyl ether (DME) is a promising fuel in view of its clean emission and relatively low technical problems to commercialize it for light duty and heavy duty trucks. The emission of the latest 20 ton truck is within the post 2005 challenge regulation (namely, 09 regulation, NOx: 0.23g/kWh, PM: 0.01g/kwh) . The low boiling temperature of DME (-24.8C) necessitates the use of blend fuel for the safety of marine engines. The viscosity of the blend fuel (30% DME and 70% palm oil) is close to that of diesel fuel giving a similar performance as that of diesel fuel. The higher DME content in the blend fuel decreases the soot from the engine. The carbon deposit in the combustion chamber should be burned by the use of neat or high content of DME blended fuel.