...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Fuel >Improvement of fuel economy of a direct-injection spark-ignition methanol engine under light loads
【24h】

Improvement of fuel economy of a direct-injection spark-ignition methanol engine under light loads

机译：在轻载条件下提高直喷式火花点火甲醇发动机的燃油经济性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The effects of ignition system, compression ratio, and methanol injector configuration on the brake thermal efficiency (BTE) and combustion of a high-compression direct-injection spark-ignition methanol engine under light loads were investigated experimentally, and its BTE was compared with its diesel counterpart. The experimental results showed that these factors significantly affect the fuel economy under light load. The BTE of a methanol engine using a high-energy multi-spark-ignition system is on average 25% higher than that of one using a single-spark-ignition system at a brake mean effective pressures (BMEP) of 0.11-0.29 MPa and an engine speed of 1600 rpm. Decreasing the compression ratio of the methanol engine from 16:1 to 14:1 markedly increases the BTE under low loads and decreases the BTE at high loads. For the methanol engine, using an injector of a 10-hole x 0.30 mm nozzle decreases the ignition delay and improves the fuel economy compared to when an injector of a 7-hole x 0.45 mm nozzle is used. The combustion duration using an injector of a 7-hole x 0.45 mm nozzle is much longer than that with one of a 10-hole x 0.30 mm nozzle under light loads. As a result, the BTE for a methanol engine with optimal parameters is improved by 27% compared to that for a methanol engine without optimized parameters at a BMEP of 0.17 MPa and an engine speed of 1600 rpm, but the BTE of the optimized methanol engine is 20% lower than that of its diesel counterpart under these operating conditions.
机译：实验研究了点火系统，压缩比和甲醇喷射器配置对轻载下高压缩直喷式火花点火甲醇发动机的制动热效率（BTE）和燃烧的影响，并将其与BTE进行了比较。柴油机。实验结果表明，这些因素显着影响轻载条件下的燃油经济性。在制动平均有效压力（BMEP）为0.11-0.29 MPa且制动平均有效压力为0.1-0.29 MPa的情况下，使用高能多火花点火系统的甲醇发动机的BTE平均比使用单火花点火系统的甲醇发动机的BTE高25％。发动机转速为1600 rpm。甲醇发动机的压缩比从16：1降低到14：1显着提高了低负荷下的BTE，降低了高负荷下的BTE。对于甲醇发动机，与使用7孔x 0.45 mm喷嘴的喷射器相比，使用10孔x 0.30 mm喷嘴的喷射器减少了点火延迟并提高了燃油经济性。在轻载下，使用7孔x 0.45毫米喷嘴的喷射器的燃烧持续时间比使用10孔x 0.30毫米喷嘴的喷射器的燃烧持续时间长得多。结果，与最佳参数的甲醇发动机相比，在BMEP为0.17 MPa和发动机转速为1600 rpm的情况下，与没有优化参数的甲醇发动机相比，BTE提高了27％，但是优化甲醇发动机的BTE在这些工况下比柴油机低20％。

著录项

  • 来源
    《Fuel》 |2011年第5期|p.1826-1832|共7页
  • 作者

    Chang-Ming Gong; Kuo Huang; Jing-Long Jia; Yan Su; Qing Gao; Xun-Jun Liu;

  • 作者单位

    State Key Laboratory of Automobile Dynamic Simulation, Jilin University, Changchun 130022, China;

    State Key Laboratory of Automobile Dynamic Simulation, Jilin University, Changchun 130022, China;

    State Key Laboratory of Automobile Dynamic Simulation, Jilin University, Changchun 130022, China;

    State Key Laboratory of Automobile Dynamic Simulation, Jilin University, Changchun 130022, China;

    State Key Laboratory of Automobile Dynamic Simulation, Jilin University, Changchun 130022, China;

    State Key Laboratory of Automobile Dynamic Simulation, Jilin University, Changchun 130022, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    spark-ignition methanol engine; direct injection; fuel economy; combustion; light loads;

    机译：火花点火式甲醇发动机;直接喷射;燃油经济性;燃烧;轻载;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号