第32卷(2010)第5期性能与排放
柴油机 Diesel Engine
中速柴油机燃用低质混合油的试验研究
刘鑫，冯立岩，杜宝国，隆武强
（大连理工大学能源与动力学院，辽宁大连116023）
Vel. 32(2010) No. 5
摘要：在一台中速荣油机上进行了轻荣油和低质混合油的动力性能试验，通过对缸内压力曲线的分析，对比研究了轻柴油和低质混合油的缸内燃烧情况；比较了两种喷油嘴参数对应的柴油机动力性能；研究了燃油温度对低质混合油动力性能的影响。结果表明，采用原机喷油嘴，与燃用轻柴油相比，燃用低质混合油时，在中低负荷条件下，燃烧压升率变大，最高燃烧压力升高；高负荷条件下，缸内最高燃烧压力有所降低；采用喷孔数及實孔直径均增加的新實油嘴后，在各个工况下燃用低质混合油时的最高燃烧压力比燃用轻柴油时的高；随燃油温度升高，缸内燃烧压力
升高，但燃油温度升高到一定限值后，动力性能下降。关键词：中速荣油机；低质混合油；燃烧；喷油嘴
中图分类号：TK421.2
文献标识码：A
文章编号：10014357(2010)05000805
TheExperimentResearchonMediumSpeedDieselEngine
UsingHeavyFuelOil
Liu Xin,Feng Liyan,Du Baoguo,Long Wuqiang
(Liaoning Province Key Laboratory of Internal Combustion Engine,
Dalian University of Technology, LiaoningDalian 116023)
Abstract: Dynamic performance tests were carried out on a medium speed diesel engine, using light diesel fuel and heavy fuel oil. Cylinder pressure was measured to evaluate the combustion characteristics. The engine's dynamic performance corresponding to the parameters of two different injection nozzle were compared. The influence of fuel temperature on the dynamic performance of heavy fuel oil was studied. Results show that : if the nozzle is kept unchanged, using of heavy fuel oil causes higher pressure in-creasing rate and increased peak pressure under low and medium load conditions; on the contrary, under high load condition, peak pressure decreases; compared with light diesel fuel, the peak pressure gets higher for heavy fuel oil after increasing the nozzle hole number and enlarging the hole diameter; fuel temperature also has great impact on combustion performance of heavy fuel oil, and there is an optimal fuel temperature; with the increasing of fuel temperature, the combustion pressure gets higher, however, when the fuel temperature reach a certain limit, the dynamic performance of the engine turms to be worse. Keywords: medium speed diesel engine; heavy fuel oil; combustion; injection nozzel
1概述
近年来，石油及成品油价格不断上涨，导致柴收稿日期：2010-03-02；修回日期：2010-07-02
基金项目：辽宁省教育厅高校重点试验室资助项目，
油机运行成本大幅增加。为降低产品的运行成本以拓宽市场，对某型号中速柴油机进行改进，改进后的柴油机可燃用低质混合油。
作者简介：刘鑫（1985-），男，硕士研究生，研究方向为内燃机缸红内工作过程与排放，E-mail：sanjinliu@163.com。