电控单缸柴油机燃烧室设计与实验研究

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电控单缸柴油机燃烧室设计与实验研究

兰旭东¹, 潘春雨², 周明¹

1. 清华大学航天航空学院, 北京 100084;
2. 中航工业金城南京机电液压工程研究中心, 南京 211106

Design and tests of a combustion chamber for an electrically controlled, single-cylinder diesel engine

LAN Xudong¹, PAN Chunyu², ZHOU Ming¹

1. School of Aerospace Engineering, Tsinghua University, Beijing 100084, China;
2. Nanjing Engineering Institute of Aircraft Systems, Jincheng, AVIC, Nanjing 211106, China

摘要:

输出: BibTeX | EndNote (RIS)

摘要为了满足发动机动力性、经济性和排放的要求，设计与进气系统和燃油喷射系统相匹配的燃烧室构型至关重要。采用数值模拟和实验验证相结合的方法，对电控单缸柴油机的燃烧室进行设计和优化。参考基准机型的主要结构参数，完成燃烧室结构设计，采用Euler-Lagrange联合仿真法对发动机标定点和扭矩点的性能进行计算，并与实验结果对比；对燃烧室结构进行参数化建模，研究标定点和扭矩点工况下燃烧室缩口比、燃烧室深度、燃烧室内径3个关键结构参数对发动机耗油率和排放的影响。结果表明：Euler-Lagrange联合仿真法满足燃烧室设计要求；在进气系统和燃油喷射系统确定的情况下，燃烧室的3个关键结构参数对发动机性能有显著影响。

关键词 ：柴油机,燃烧室设计,Euler-Lagrange耦合方法,实验研究

Abstract：The design of a combustion chamber must match the intake air and fuel injection systems to improve the power, specific fuel consumption (SFC) and emissions of diesel engines. Numerical simulations and experimental validations are used to optimize the combustion chamber of an electrically controlled, single-cylinder diesel engine. The power and torque of a single-cylinder diesel engine are predicted using a hybrid Euler-Lagrange method with comparisons to test measurements. A parameterized design is then used to design the combustion chamber. Three key parameters for the re-entrance ratio, depth and inner diameter of the combustion chamber relate to the engine performance (power, torque, SFC and emission). The results show that the hybrid Euler-Lagrange method can be used to design the combustion chamber. The three key parameters strongly affect the engine performance for the given intake air and fuel injection systems.

Key words：diesel engine combustion chamber design hybrid Euler-Lagrange method experimental research

收稿日期: 2015-12-11 出版日期: 2016-10-25

ZTFLH:

TK422

引用本文:

兰旭东, 潘春雨, 周明. 电控单缸柴油机燃烧室设计与实验研究[J]. 清华大学学报（自然科学版）, 2016, 56(10): 1109-1113.
LAN Xudong, PAN Chunyu, ZHOU Ming. Design and tests of a combustion chamber for an electrically controlled, single-cylinder diesel engine. Journal of Tsinghua University(Science and Technology), 2016, 56(10): 1109-1113.

链接本文:

http://jst.tsinghuajournals.com/CN/10.16511/j.cnki.qhdxxb.2016.22.047或 http://jst.tsinghuajournals.com/CN/Y2016/V56/I10/1109

图表:

图１ Euler多相流与Lagrange喷雾联合仿真流程图

表１联合仿真模型及参数选取

表２单缸柴油机主要设计指标

图２燃烧室结构示意图

表３初始和边界条件

图３缸内压强和放热率随曲轴转角变化(标定点)

图４缸内压强、放热率随曲轴转角变化(扭矩点)

表４电控单缸柴油机设计指标与实测结果对比

图５ ω 型燃烧室结构示意图

表５ 6组燃烧室几何构型

图６燃烧室构型对有效功率和耗油率的影响(标定点)

图７燃烧室构型对有效功率和耗油率的影响(扭矩点)

图８燃烧室构型对NO和碳烟排放的影响(标定点)

图９燃烧室构型对NO和碳烟排放的影响(扭矩点)

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