不同海拔高度下自然吸气和增压柴油机的燃烧过程

随着海拔的增加 (高于海平面 ) ,大气压力减小 ,导致吸入柴油机气缸内的空气量减少。因此 ,柴油机缸内的压力、温度以及混合气密度相应减小 ,以至于在不同海拔地区运行的自然吸气柴油机和增压柴油机的燃烧过程存在差异。使用内燃机大气模拟综合测量系统对在不同海拔地区运行的柴油机的燃烧过程进行了研究 ,所获得的结论有助于澄清和解决在不同海拔地区运行的柴油机其燃烧过程中某些不清楚的问题。

Combustion Process of Naturally Aspirated and Supercharged Diesel Engines at Regions with Different Altitude

With the increase of altitude (above sea level),atmospheric pressure decreases,which leads to a reduction of the air amount inhaled into the cylinder of diesel engines.Thereby the pressure,the temperature of the cylinder in diesel engines and the density of the mixture decrease correspondingly,so that there are differences between the combustion processes which naturally aspirated and supercharged diesel engines operate at different altitude regions.The combustion processes of diesel engines at different altitude regions have been studied by means of a micro computer controlled atmosphere simulating system on engines.The achieved conclusions serve to clarify some of the uncertainties about the combustion processes of diesel engines in plateau regions and contribute to solve some of the problems that diesel engines have when working in plateau regions.