| 柴油机起动油量控制策略优化对燃烧的改善 |
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| 引用本文： | 刘忠长,郭亮,苏岩,雷霆.柴油机起动油量控制策略优化对燃烧的改善[J].燃烧科学与技术,2009,15(6). |
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| 作者姓名： | 刘忠长 郭亮 苏岩 雷霆 |
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| 作者单位： | 1. 吉林大学汽车动态模拟国家重点实验室,长春,130022
2. 广州汽车集团股份有限公司汽车工程研究院,广州,510640 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 为了改善柴油机起动过程的燃烧,利用基于循环控制的柴油机起动过程测控系统,研究了起动油量对柴油机冷机起动过程燃烧的影响规律,并对起动过程的油量控制策略进行了优化.试验结果表明:冷机条件下,采用不同恒定油量起动,直接进入怠速控制的起动油量控制策略,在起动初始或过渡阶段都存在不同程度的失火现象,供油量与转速变化的不匹配是导致过渡期失火的主要原因.通过采用大油量起动,过渡期随转速变化使用阶梯降低油量进入怠速的供油策略,能够有效减少在起动过渡期的失火和不完全燃烧循环,改善起动过程燃烧.
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| 关 键 词： | 柴油机 冷起动 燃油喷射 控制策略 燃烧 |
Improvement on Combustion by Optimization of Fuel Control Strategy of Diesel Engine Under Start Conditions |
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| LIU Zhong-chang,GUO Liang,SU Yan,LEI Ting.Improvement on Combustion by Optimization of Fuel Control Strategy of Diesel Engine Under Start Conditions[J].Journal of Combustion Science and Technology,2009,15(6). |
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| Authors: | LIU Zhong-chang GUO Liang SU Yan LEI Ting |
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| Affiliation: | LIU Zhong-chang1,GUO Liang1,SU Yan1,LEI Ting2(1.State Key Laboratory of Automobile Dynamic Simulation,Jilin University,Changchun 130022,China,2.Automotive Engineering Institute,Guangzhou Automobile Group Company Limited,Guangzhou 510640,China) |
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| Abstract: | The effect of fuel injection during start on combustion of diesel engine was investigated and the control strategy of fuel injection was optimized to improve combustion of diesel engine under start conditions.A control and measure system based on cycle-by-cycle for diesel engine start was utilized in this study.The result indicates that when the diesel engine is started under low temperature,the control strategy to let the engine start with a certain constant fuel injection,there may be misfire cycles durin... |
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| Keywords: | diesel engine cold start fuel injection control strategy combustion |
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