动态跳跃点火(DSF)停缸技术节油效果
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摘要
动态跳跃点火(DSF)为一项全可变停缸技术,发动机的每一个气缸都可以动态地执行停缸操作。其控制逻辑对停缸作出适当搭配,在兼顾NVH的同时,赋予了发动机更广泛的停缸范围,停缸缸数增加,节油能力优于传统停缸技术。基于车辆实测解析评估,一款1.4T轿车改装DSF在中国工况CLTC_P下的节油效果近于怠速起停的收益,例如7%左右。DSF在不同工况下节油效果有差别,数据显示NEDC循环下节油率略优于CLTC_P循环。DSF可以与48 V技术、智能控制技术、米勒循环发动机及均质稀燃发动机技术相配合,达成综合节油,这些组合为汽车厂家满足第五阶段油耗目标值提供了技术选项。
The dynamic skip fire(DSF) is a fully-variable engine cylinder deactivation technology, which allows each cylinder of engine to conduct deactivation dynamically. The control logic of DSF can make an appropriate strategy of cylinder deactivation with the solution of NVH problem, which bring a wider range of cylinder deactivation and hence increase the number of deactivated cylinder. Accordingly, DSP can achieve better fuel economy than traditional cylinder deactivation. According to car real-time measurement and analysis, the fuel saving of CLTC_P cycle for 1.4 T car retrofitted with DSP was around 7%, which was close to that of idle start-stop. DSF had a different fuel economy under different conditions and the data showed that the fuel saving effect of NEDC was superior to that of CLTC_P. In addition, DSP could be matched with 48 V hybrid technology, intelligent control, Miller cycle engine and homogeneous lean-burn engine so as to realize integrated fuel economy. The composite technology was good choice to meet the fifth stage fuel consumption target value for automobile manufacturer.
The dynamic skip fire(DSF) is a fully-variable engine cylinder deactivation technology, which allows each cylinder of engine to conduct deactivation dynamically. The control logic of DSF can make an appropriate strategy of cylinder deactivation with the solution of NVH problem, which bring a wider range of cylinder deactivation and hence increase the number of deactivated cylinder. Accordingly, DSP can achieve better fuel economy than traditional cylinder deactivation. According to car real-time measurement and analysis, the fuel saving of CLTC_P cycle for 1.4 T car retrofitted with DSP was around 7%, which was close to that of idle start-stop. DSF had a different fuel economy under different conditions and the data showed that the fuel saving effect of NEDC was superior to that of CLTC_P. In addition, DSP could be matched with 48 V hybrid technology, intelligent control, Miller cycle engine and homogeneous lean-burn engine so as to realize integrated fuel economy. The composite technology was good choice to meet the fifth stage fuel consumption target value for automobile manufacturer.
引文
[1] 国家标准化管理委员会.GB/T 中国汽车行驶工况(征求意见稿)[S].http://www.catarc.org.cn/upload/201808/01/201808011133125858.pdf.
[2] US Environment Protect Agency.Proposed determina-tion on the appropriateness of the model year 2022-2025 light duty vehicle Greenhouse Gas Emission standards under Midterm Evaluation[R].EPA-420-R-16-021,2016:1-6.
[3] 杨文海.GDI发动机可变排量技术的研究[D].长春:吉林大学,2017:6-7.
[4] 俞晓旋.基于电磁驱动气门的发动机停缸技术研究[D].南京:南京理工大学,2011.
[5] Rebbert M,Kreusen G,Lauer S.A New Cylinder Deactivation by FEV and Mahle[C].SAE Paper 2008-01-1354.
[6] Andrei Radulescu,Eaton Corp.Switching Response Optimization for Cylinder Deactivation with Type Ⅱ Passenger Car Applications[C].SAE Paper 2013-01-0589.
[7] Andrei Radulescu,Leighton Roberts,Eri Yankovic,et al.Durability and Reliability Demonstration for Switching Roller Finger Follower in Cylinder Deactivation system[C].SAE Paper 2014-01-1704.
[8] Mark Wilcutts,Joshua Switkes,Mark Shost,et al.Tula Technology Inc.,Design and Benefits of Dynamic Skip Fire Strategies for Cylinder Deactivated Engines[C].SAE Paper 2013-01-0359.
[9] Kian Eisazadeh-Far,Matthew Younkins.Tula Techno-logy Inc.,Fuel Economy Gains through Dynamic-Skip-Fire in Spark Ignition Engines[C].SAE Paper 2016-01-0672.
[10] 钱国刚,李菁元,陆红雨.轻型乘用车在中国的怠速起停循环外油耗测试评价[J].汽车安全与节能学报,2015,6(2):172-173.
[11] 钱国刚,周华,方茂东.配置48V系统后汽车的节油效益研究[J].重庆理工大学学报(自然科学),2017(12):2.
[12] Mark Wilcutts,Masaki Nagashima,Eisazadeh-Far,et al.Electrified Dynamic Skip Fire(eDSF):Design and Benefits[C].SAE Paper 2018-01-0864.
[2] US Environment Protect Agency.Proposed determina-tion on the appropriateness of the model year 2022-2025 light duty vehicle Greenhouse Gas Emission standards under Midterm Evaluation[R].EPA-420-R-16-021,2016:1-6.
[3] 杨文海.GDI发动机可变排量技术的研究[D].长春:吉林大学,2017:6-7.
[4] 俞晓旋.基于电磁驱动气门的发动机停缸技术研究[D].南京:南京理工大学,2011.
[5] Rebbert M,Kreusen G,Lauer S.A New Cylinder Deactivation by FEV and Mahle[C].SAE Paper 2008-01-1354.
[6] Andrei Radulescu,Eaton Corp.Switching Response Optimization for Cylinder Deactivation with Type Ⅱ Passenger Car Applications[C].SAE Paper 2013-01-0589.
[7] Andrei Radulescu,Leighton Roberts,Eri Yankovic,et al.Durability and Reliability Demonstration for Switching Roller Finger Follower in Cylinder Deactivation system[C].SAE Paper 2014-01-1704.
[8] Mark Wilcutts,Joshua Switkes,Mark Shost,et al.Tula Technology Inc.,Design and Benefits of Dynamic Skip Fire Strategies for Cylinder Deactivated Engines[C].SAE Paper 2013-01-0359.
[9] Kian Eisazadeh-Far,Matthew Younkins.Tula Techno-logy Inc.,Fuel Economy Gains through Dynamic-Skip-Fire in Spark Ignition Engines[C].SAE Paper 2016-01-0672.
[10] 钱国刚,李菁元,陆红雨.轻型乘用车在中国的怠速起停循环外油耗测试评价[J].汽车安全与节能学报,2015,6(2):172-173.
[11] 钱国刚,周华,方茂东.配置48V系统后汽车的节油效益研究[J].重庆理工大学学报(自然科学),2017(12):2.
[12] Mark Wilcutts,Masaki Nagashima,Eisazadeh-Far,et al.Electrified Dynamic Skip Fire(eDSF):Design and Benefits[C].SAE Paper 2018-01-0864.