电控柴油机燃油系统参数匹配对油耗率的影响  

Influence of Optimal Matching of Fuel Injection System's Parameters on Fuel Comsumption of Diesel Engine

作　　者：孙思远[1] 徐虎[1] 黄加亮[1,2] 胡启坤 

机构地区：[1]集美大学轮机工程学院,福建厦门361021 [2]福建省船舶与海洋工程重点实验室,福建厦门361021 [3]上海海事局,上海200086

出　　处：《中国航海》2017年第3期14-19,共6页Navigation of China

基　　金：国家自然科学基金(51279066);福建省自然科学基金(2017J01486)

摘　　要：基于某船用四冲程柴油机的电控化改造,利用AMESim及AVL_FIRE软件建立电控组合泵单缸燃油喷射系统模型和缸内高压循环模型。采用一次回归正交试验设计方法对燃油喷射系统参数进行优化匹配和显著性检验;采用二次回归正交试验设计方法对优化结果与油束夹角进行匹配优化。结果表明:初优化得到的三组参数组合都满足设计压力为105 MPa的要求;再优化得到的8个×0.26 mm-15.0 mm-0.46 mm/(°)-900 mm-150°(喷孔数×孔径-柱塞直径-凸轮型线速度-油管长度-油管直径-油束夹角)参数组合下的油耗率最低为0.191 0 kg/(kW·h);通过回归分析得到的油耗率预测模型可准确预测油耗率,使研究周期大大缩短。Based on the engine fuel injection system for electronically-control transformation of a 4-stroke diesel engine,the unit cylinder fuel injection system model of electronically-controlled unit pump and the model of high pressure circulation in cylinder are respectively built by means of the software AMESim and AVL_FIRE. Multiple parameters are tested and optimized by means of the linear regression orthogonal experiment design method. The experiment is verified by the significance test. Quadratic regression orthogonal experiment design method is used to match the above optimized results with oil beam angle. Research results show that three sets of parameter combination optimization that gained through the linear regression orthogonal experiment design method can meet the requirements of 105 MPa. The fuel consumption rate can reach the lowest level of 0. 191 0 kg/（ kW · h） under the parameter combination optimization of 8 × 0. 26 mm-15. 0 mm-0. 46 mm/（ °）-900 mm-150°（ number of nozzle holes × bore diameter-diameter of plunger-cam type linear velocity-tubing length-tubing diameter-oil beam angle） which are gained through re-optimization. Quadratic orthogonal regression design method provides a sound basis for fuel consumption rate prediction,greatly shortening the research period.

关 键 词：船舶工程 柴油机 电控化改造 正交试验设计 燃油系统 参数优化 油耗率 

分 类 号：U664.121[交通运输工程—船舶及航道工程]