内燃机工程2025，Vol.46Issue(4)：181-189,9.DOI:10.13949/j.cnki.nrjgc.2025.04.019
对置二冲程柴油机电辅助增压方式对能量利用的影响
Influences of Electrically Assisted Turbocharging Modes on Energy Utilization of Opposed-Piston Two-Stroke Diesel Engines
摘要
Abstract
To address the issue of insufficient exhaust energy at low engine speeds in opposed-piston two-stroke(OP2S)engines,research on an electrically-assisted boosting system was conducted to enhance the boosting capability.A 1D simulation model for an electrically assisted turbocharged OP2S engine was established,and the in-cylinder energy and exhaust energy utilization efficiencies of pre-installed,mid-installed,and rear-installed electrically assisted turbocharging modes were analyzed.The results indicate that the exhaust energy is insufficient for the turbocharger to operate stably at low engine speed under 2 300 r/min.The electrically assisted turbocharging can extend the stable operating speed range of the OP2S engine.In addition,the increase of the exhaust energy at low engine speed makes the exhaust gas turbocharger which could not operate stably also have a supercharging effect,further increasing the pressure ratio.It suggests a synergistic effect between the two systems.The mid-installed mode exhibits the highest in-cylinder energy utilization efficiency,surpassing the lowest(the pre-installed mode)by 1.1 percentage points without compromising exhaust energy utilization.关键词
对置活塞二冲程发动机/废气涡轮增压/电辅助增压/介入功率/能量利用率Key words
opposed-piston two-stroke(OP2S)engine/exhaust turbocharging/electrically assisted turbocharging/interventional power/energy utilization rate分类
能源科技引用本文复制引用
吴晗,黄延瑞,王子玉,张丛,郭瑾朋,孙珑,张泽宇,石智成,李向荣..对置二冲程柴油机电辅助增压方式对能量利用的影响[J].内燃机工程,2025,46(4):181-189,9.基金项目
车用动力系统全国重点实验室基金项目(6142212220403) （6142212220403）
国家自然科学基金项目(52306129) National Key Laboratory of Vehicle Power System Foundation(6142212220403) （52306129）
National Natural Science Foundation of China(52306129) （52306129）
