电子增压器对增压米勒循环汽油机性能影响的试验研究

doi:10.19562/j.chinasae.qcgc.2019.07.002

汽车工程 ›› 2019, Vol. 41 ›› Issue (7): 738-743.doi: 10.19562/j.chinasae.qcgc.2019.07.002

电子增压器对增压米勒循环汽油机性能影响的试验研究

冯浩, 秦博, 林思聪, 孙云龙

广州汽车集团股份有限公司汽车工程研究院,广州 511434

出版日期:2019-07-25 发布日期:2019-07-30
通讯作者: 冯浩,工程师,E-mail:haovon@foxmail.com
基金资助:
国家重点研发计划项目(2017YFB0103300)资助。

An Experimental Study on the Effect of Electric Supercharger on the Performance of a Turbocharged Miller Cycle Gasoline Engine

Feng Hao, Qin Bo, Lin Sicong ,Sun Yunlong

GAC Automotive Research & Development Center, Guangzhou 511434

Online:2019-07-25 Published:2019-07-30

摘要/Abstract

摘要： 为提高发动机有效热效率和动力响应性,在一台三缸增压米勒循环汽油机上,研究了电子增压器对发动机经济性和动力响应性的影响。结果表明:经济性方面,电子增压器能显著提高发动机低转速大负荷时的低压废气再循环引入能力,发动机在2 000 r/min、平均有效压力为1.4 MPa时低压最大EGR率从15%提升到25%,实现了39.5%的有效热效率。从能量平衡角度分析,热效率提升的主要因素是传热损失、排气损失和未燃HC损失的减少。动力响应性方面,发动机在1 500 r/min时,电子增压器的接入显著提高了发动机增压阶段的压力升高率,瞬态响应时间缩短了58%;同时,电子增压器起到发动机功率放大器的作用,消耗3 kW的电耗使发动机功率增加12 kW。

关键词: 电子增压器, 废气再循环, 有效热效率, 瞬态响应, 米勒循环

Abstract: To improve the brake thermal efficiency (BTE) and power response performance of gasoline engines, an experimental study is conducted on a 3-cylinder turbocharged Miller cycle gasoline engine with electrical supercharger (e-SC) to investigate the effects of e-SC on the fuel economy and power response performance of engine. Results show that e-SC can significantly enhance the capability of engine in introducing low-pressure exhaust gas recirculation (EGR) at low-speed high-load conditions. Under a condition of a rotational speed of 2 000 r/min and a BMET of 1.4 MPa, the maximum low-pressure ERG rate can increase from 15% to 25% and the engine achieves a BTE of 39.5%, due to the reductions of heat transfer loss, exhaust heat loss and unburned HC loss. At a rotational speed of 1 500 r/min, the switching-on of e-SC markedly increases the pressure rise rate of engine, with the transient response time shortened by 58%. In addition, e-SC gains a 12 kW engine power pay-off by consuming 3 kW of electric power, playing a role of amplifying engine power

Key words: electric supercharger, EGR, brake thermal efficiency, transient response, miller cycle

冯浩, 秦博, 林思聪, 孙云龙. 电子增压器对增压米勒循环汽油机性能影响的试验研究[J]. 汽车工程, 2019, 41(7): 738-743.

Feng Hao, Qin Bo, Lin Sicong ,Sun Yunlong. An Experimental Study on the Effect of Electric Supercharger on the Performance of a Turbocharged Miller Cycle Gasoline Engine[J]. Automotive Engineering, 2019, 41(7): 738-743.

参考文献

[1] LECOINTE B, MONNIER G. Downsizing a gasoline engine using turbocharging with direct injection[C]. SAE Paper 2003-01-0542.
[2] ZACCARDI J M, PAGOT A, VANGRAEFSCHEPE F, et al. Optimal design for a highly downsized gasoline engine[C]. SAE Paper 2009-01-1794.
[3] MIKLANEK L, VITEK O, GOTFRYD O, et al. Study of unconventional cycles (Atkinson and Miller) with mixture heating as a means for the fuel economy improvement of a throttled SI engine at part load[J]. SAE International Journal of Engines,2012,5(4):1624-1636.
[4] 冯仁华,付建勤,杨靖,等.Atkinson循环发动机性能改进研究[J].汽车工程,2017,39(5):509-516.
[5] LI T, ZHENG B, YIN T. Fuel conversion efficiency improvements in a highly boosted spark-ignition engine with ultra-expansion cycle[J]. Energy Conversion & Management,2015,103:448-458.
[6] 郑斌,李铁,尹涛.米勒循环改善增压直喷汽油机热效率的机理分析——部分负荷工况分析[J].内燃机工程,2016,37(6):116-121.
[7] 祖炳锋,周仁杰,徐玉梁,等.米勒循环在小型增压汽油机典型工况的应用研究[J].内燃机工程,2017,38(6):125-130.
[8] 吴学松,詹樟松,尚宇,等.外部EGR技术在高压缩比米勒循环发动机上的试验研究[J].内燃机工程,2015,36(4):19-24.
[9] 潘锁柱,宋崇林,裴毅强,等.EGR对GDI汽油机燃烧和排放特性的影响[J].内燃机学报,2012(5):409-414.
[10] ALGER T, CHAUVET T, DIMITROVA Z. Synergies between high EGR operation and GDI systems[J]. SAE International Journal of Engines,2008,1(1):101-114.
[11] 晁岳栋,陆海峰,李理光,等.基于理论循环的汽油机EGR技术节油机理[J].内燃机学报,2017(3):208-214.
[12] 姚春德,敬章超,傅晓光,等.冷却废气再循环对发动机性能影响的试验研究[J].汽车工程,2003,25(6):537-540,568.
[13] LI T, WU D, XU M, et al. Thermodynamic analysis of EGR effects on the first and second law efficiencies of a boosted spark-ignited direct-injection gasoline engine[J]. Energy Conversion and Management,2013:130-138.
[14] 黎长乐,杨彬彬,尧命发,等.汽油/柴油双燃料不同燃烧模式能量平衡分析研究[J].内燃机工程,2015,36(5):43-48.

电子增压器对增压米勒循环汽油机性能影响的试验研究

An Experimental Study on the Effect of Electric Supercharger on the Performance of a Turbocharged Miller Cycle Gasoline Engine

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