混合动力用甲醇发动机快速起动性能

    Quick Start Performance of Methanol Engine for HEV Applications

    • 摘要: 为了解决城市工况中混合动力用发动机频繁停机/再起动导致排放恶劣的问题,提出以甲醇作为混合动力用发动机快速起动的燃料,并对采用甲醇燃料的发动机快速起动性能进行试验研究.试验用发动机为点燃式进气道喷射自然吸气汽油机,加装一套甲醇喷射系统可作为甲醇发动机,再通过加装一台交流电机来模拟混合动力发动机快速起动过程,采用自主开发的电子控制单元对试验系统进行控制.试验结果表明,相比于采用汽油燃料,采用甲醇燃料时,发动机高转速快速起动阶段消耗燃料的比能耗降低,发动机的火焰发展期和快速燃烧期都有所缩短,起动过程中的碳氢、一氧化碳和氮氧化物排放都明显减少.

       

      Abstract: For improving bad emissions resulted from frequently stop/re-start of bybrid electric vehicle (HEV) engines in urban drive condition, using methanol as the fuel of HEV engine in quick start was proposed and experimentally studied. The experimental engine was a spark ignited port fuel injected gasoline engine. An AC motor was connected to the flywheel to simulate quick start process of HEV engine. A self-developed electric control unit was used to control the experimental system. Results show that comparing with gasoline engine, methanol engine consumes less energy in quick start, both the CA0-10 and CA10-90 are decreased, and the HC, CO and NOx emissions are reduced significantly.

       

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