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随着柴油机增压程度的不断提高,出现了高工况时增压压力P_k 过高,低工况时P_k 太低的现象,引起低工况性能差的问题.为了解决这个问题,提出了在增压系统中增加实时控制的放气阀或旁通阀等措旋.在选择这类系统时,需要比较这些系统的好坏,目前的方法,只能依靠定性分析或者计算机配合计算,但前者太粗略,后者太复杂,且因计算工况数目有限对比不全面.本文提出了等效增压器的概念,并利用它比较了各类系统的性能,得出了一些明确的结论,为这方面研究提供了新的有效的方法.
With the constant increase of the supercharging degree of diesel engine, the phenomenon of too high supercharging pressure P_k in high working condition and too low P_k in low working condition appeared, which caused the poor performance of low working condition.In order to solve this problem, Pressurization system to increase real-time control of the purge valve or bypass valve and other measures.In the choice of such systems, you need to compare these systems is good or bad, the current method can only rely on qualitative analysis or computer with the calculation, but the former Too coarse, the latter is too complicated, and due to the limited comparison of the number of working conditions is not comprehensive.This paper presents the concept of equivalent turbocharger and use it to compare the performance of various systems, come to some definite conclusions as Research in this area provides a new and effective method.