EGR化合物对HCCI-柴油替代物氧化的影响
Influence of EGR compounds on the oxidation of an HCCI-diesel surrogate
摘要：
本文介绍了一种典型的汽车代用燃料混合物，即正庚烷和甲苯的氧化的各种添加剂的影响的实验和数值研究。研究了发动机再循环排气对均质充量压缩点火（HCCI）发动机控制的影响。在高度稀释的喷射搅拌反应器（JDR）中在1和10大气压（1大气压= 101，325 Pa）的压力下进行一系列实验。所选择的热化学条件接近HCCI发动机的预燃期特性。研究了在550-1100 K范围内（包括负温度系数区），一氧化氮（NO）、乙烯（C2 H4）和甲醇（CH 3OH）对正庚烷/甲苯混合物氧化的影响。
英文摘要：
This paper presents an experimental and numerical study of the impact of various additives on the oxidation of a typical automotive surrogate fuel blend, i.e. n-heptane and toluene. It examines the impact of engine re-cycled exhaust has compounds on the control of an Homogeneous Charge Compression-Ignition (HCCI) engine. Series of experiments were performed in a hihly diluted Jet-Stirred Reactor (JDR) at pressures of 1 and 10 atm (1 atm = 101,325 Pa). The chosen thermo-chemical conditions were close to those characteristices of the pre-ignition period in an HCCI engine. The influence of various additives, namely nitric oxide (NO), ethylene (C2H4) and methanol (CH3OH), on the oxidation of a n-heptane/toluene blend was studied over a wide range of temperatures (550-1100 K), including the zone of the Negative Temperature Coefficient (NTC).
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