西安交通大学能源与动力工程学院,西安,710049
网络首发:2009-11-10,
纸质出版:2009
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宋睿智, 李珂, 刘圣华, 等. 深度废气再循环对二甲醚发动机性能及排放的影响[J]. 西安交通大学学报, 2009,43(11):27-31.
Influences of Ultra-High Exhaust Gas Recirculation on Performance and Emission Characteristics of a Dimethyl Ether Engine[J]. 2009, 43(11): 27-31.
在一台两缸二甲醚发动机上开展了不同废气再循环(EGR)率下发动机的性能和排放特性研究
测量了不同工况下发动机的油耗
HC、CO和NO
x
的排放.研究表明:二甲醚发动机可承受的最大EGR率接近60%
但在高负荷时
过大的EGR率会导致发动机燃油消耗率显著升高; EGR率对发动机的NO
x
排放量影响很大
随着EGR率的增加
发动机的NO
x
排放量大幅度下降
高负荷时下降幅度更大; EGR率增大
HC和CO排放增加
高负荷时增加的幅度更大
特别是当EGR率超过一定范围时
EGR率的增大会引起HC和CO排放的急剧增加; 低负荷时
最佳EGR率应保持在30%左右
而高负荷时
应采用较小的EGR率.
To study the influences of the exhaust gas recirculation(EGR)rate on the emissions and performance of dimethyl ether(DME)engines
an experimental investigation was conducted on a 2-cylinder DME engine with EGR. Under the various operating conditions
the fuel consumption and emissions of HC
CO
and NO
x
were measured. The results show that the maximum EGR rate of the DME engine can reach 60% approximately
however
under high load conditions
too large EGR rate will result in obvious deterioration in the engine brake specific fuel consumption. EGR has significant effects on NO
x
emissions. NO
x
emissions decrease clearly with the increase in the EGR rate
especially under high load conditions. HC and CO emissions increase with the increase in the EGR rate
particularly under high load
conditions. When the EGR rate is over a certain value
the increase of the EGR rate will lead to a quick increase in HC and CO emissions. It is suggested that the optimal EGR rate should be near 30% under low load conditions while the engine should run with low EGR rates under high load conditions.
WANG Y, ZHOU L B, YANG Z J, et al. Study on combustion and emission characteristics of a vehicle engine fuelled with dimethyl ether[J]. Proc IMechE: J Automobile Engineering, 2005, 219(2): 263-269.[2] FLRISCH T, MCCARTHY C, BASU A, et al. A new clean diesel technology: demonstration of ULEV emission on a Navistar diesel engine fueled with dimethyl ether, SAE Paper 950061 [R]. Warrendale, Pennsylvania, USA: Society of Automotive Engineers, Inc., 1995.
WANG Y, ZHOU L B. Experimental study on exhaust emissions from a multi-cylinder DME engine operating with EGR and oxidation catalyst[J]. Applied Thermal Engineering, 2008, 28(13): 1589-1595.
吴君华, 黄震, 乔信起, 等. 废气再循环对增压二甲醚发动机性能和排放影响的试验研究[J]. 内燃机学报, 2008, 26(2): 147-152.
WU Junhua, HUANG Zhen, QIAO Xinqi, et al. Experimental study of EGR on performance and emissions of a turbocharged DME engine [J]. Transactions of CSICE, 2008, 26(2): 147-152.
周龙保. 内燃机学[M]. 北京:机械工业出版社,2006:233-235.
王尚勇, 杨青. 柴油机电子控制技术[M]. 北京:机械工业出版社,2005:259-260.
ABD-ALLA G H. Using exhaust recirculation in internal combustion engines: a review[J]. Energy Conversion Management, 2002, 43(8): 1027-1042.
HEYWOOD J B. Internal combustion engine fundamentals[M]. New York,USA: McGraw-Hill,1998: 572-592.
燃烧与供油系统参数对二甲醚发动机热效率的影响.西安交通大学学报,2008,42(5):528-531.
柴油-丙烷发动机不同喷油提前角时的燃烧和排放特性.西安交通大学学报, 2008,42(5): 532-536.
柴油-丙烷发动机不同喷油提前角时的燃烧和排放特性.西安交通大学学报, 2008,42(5):532-536.
二甲醚-氢气-空气混合气预混燃烧的实验研究.西安交通大学学报, 2008,42(5):542-545.
甲醇柴油双燃料发动机甲醇掺烧比例的正交试验研究. 西安交通大学学报,2007,41(11):1284-1287.
柴油机燃用柴油-丙烷混合燃料的性能与排放研究.西安交通大学学报,2007,41(9):1083-1086.
引燃油量对甲醇柴油双燃料发动机燃烧特性的影响.西安交通大学学报,2007,41(5):517-520.
高比例甲醇柴油双燃料发动机燃烧与排放特性的研究.西安交通大学学报,2007,41(1):14-17.
柴油机燃用柴油/乙醇混合燃料的燃烧特性.西安交通大学学报,2006,40(9):1019-1023.
直喷发动机燃用天然气掺氢混合燃料的燃烧特性.西安交通大学学报,2006,40(9):1001-1005.
柴油机燃用二甲醚/柴油混合燃料时的性能与排放研究.西安交通大学学报,2006,40(3):294-297.
直喷式柴油机燃用F-T柴油时燃烧特性的研究.西安交通大学学报,2006,40(1):5-9.
甲醇-汽油混合燃料对汽油机性能和排放的影响.西安交通大学学报,2006,40(1):1-4.
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