E100乙醇发动机电加热喷油器冷启动控制策略  

Strategy on Cold Start Control of E100 Ethanol Engine Electric Heating Fuel Injector

作　　者：胡俊勇 李杰 王先瑞 杨越 

机构地区：[1]安徽江淮汽车集团股份有限公司技术中心

出　　处：《汽车工程师》2017年第8期35-38,共4页Automotive Engineer

摘　　要：E100乙醇燃料在低温环境下冷启动会出现性能恶化,存在低温(-5℃)时E100燃料发动机启动时间长或无法启动的问题。提出了一种控制精度准确、结构简单及成本低的喷油器加热控制系统,对乙醇燃料加热以改善冷启动性能。描述了电加热喷油器系统的工作原理和控制策略。经实车测试,在水温为-5℃及以上温度点发动机一次启动成功,启动时间2.3 s。试验研究结果表明,电加热喷油器系统可以极大地提升乙醇发动机的冷启动性能。The performance of E100 ethanol fuel is bed at the low temperature in cold start, E100 engine starts for a long time or can＇t start at the temperature of -5 ℃. The electric heating fuel injector is used, that has the advantages of high control precision, simple structure and low cost, to improve the performance of cold start. This paper introduces the work principle and control strategy. The actual vehicle test shows that the engine starts only one time at the temperature of-5 ℃ or above, the start time needs 2.3 s. The test results indicate that the electric heating fuel injector can greatly improve the performance of E100 engine at cold start.

关 键 词：发动机 E100乙醇 电加热喷油器 冷启动 

分 类 号：U464.178[机械工程—车辆工程]