增压进气旁通功能介绍及对发动机性能和排放的影响  

Charge Air By-pass Function and Effect on Engine Performance and Emission

作　　者：徐明月 李文涛 冯元福 王继勇 张桂芹 XU Ming-yue;LI Wen-tao;FENG Yuan-fu;WANG Ji-yong;ZHANG Gui-qin(Weichai Power Co.,Ltd.,Weifang 261061,China;Weichai Heavy Machinery Co.,Ltd.,Weifang 261108,China)

机构地区：[1]潍柴动力股份有限公司大缸径发动机研究院,潍坊261061 [2]潍柴重机股份有限公司技术中心,潍坊261108

出　　处：《内燃机与配件》2021年第20期55-59,共5页Internal Combustion Engine & Parts

摘　　要：采用定压增压方式的大型船用发动机,在匹配增压器时一般满足高速时增压适量的要求,在低速工况下会出现进气量不足造成增压器喘振、冒黑烟以及排温过高等不良后果,一般会采用增压进气旁通这种方式来优化低负荷工况。本文详细介绍某型号船用发动机上使用的进气旁通原理以及控制策略,并结合实际的试验结果阐述对发动机性能和排放的影响。Large Marine engines with constant pressure turbocharging generally meet the requirements of an appropriate amount of turbocharging at high speed when matching the turbocharger.Under low speed conditions,insufficient air intake will cause the turbocharger surge,black smoke and excessively high exhaust temperature.In general,charge air by-pass will be adopted to optimize the low-load conditions.In this paper,the principle and control strategy of the charge air by-pass used in a certain Marine engine are introduced in detail,and the influence on engine performance and emission is expounded based on the actual test results.

关 键 词：增压进气旁通 船用发动机 性能和排放 

分 类 号：TK442[动力工程及工程热物理—动力机械及工程]