论文部分内容阅读
本文介绍了对模件式脉冲转换器(以下简写成MPC)所作的一系列试验工作,讨论了主要结构参数对MPC效率的影响。根据试验所得结果和对工作机理的分析论证了MPC增压系统在一定工作条件下(增压压力P_k为2—3.5公斤/厘米~2),其能量传递效率可以相当于或者大于通常的脉冲增压系统的能量传递效率。由于多缸柴油机采用了MPC系统,增压器废气涡轮热效率有明显提高,因而柴油机增压系统的总效率将能得到提高。此外,MPC系统与增压柴油机的现有各排气系统相比,结构大大简化,重量轻,尺寸小。鉴于目前国内外有越来越多的船用柴油机,增压压力P_k达到了2—3.5公斤/厘米~2,而MPC系统特别适用于这一压力范围,因此应当对MPC作进一步的理论研究和重视推广应用工作。
This paper presents a series of experimental work on a modular pulse converter (hereinafter abbreviated as MPC) and discusses the effect of major structural parameters on MPC efficiency. According to the test results and the analysis of the working mechanism, it is demonstrated that the MPC pressurization system can work at a certain working condition (supercharging pressure P_k is 2-3.5 kg / cm ~ 2) and its energy transfer efficiency can be equal to or greater than the normal pulse increase Pressurization system energy transfer efficiency. Due to the MPC system used in the multi-cylinder diesel engine, the thermal efficiency of the turbocharger exhaust gas turbine is significantly increased, so that the overall efficiency of the diesel engine pressurization system can be improved. In addition, compared with the existing exhaust systems of turbocharged diesel engines, the MPC system is greatly simplified in structure, light in weight and small in size. In view of the increasing number of marine diesel engines at home and abroad, the supercharging pressure P_k reaches 2-3.5 kg / cm ~ 2, and the MPC system is particularly suitable for this pressure range. Therefore, further theoretical research and emphasis on MPC should be made Promote the application of work.