使用注射系统作为传感器来分析电子汽车系统的状态.
Matej Kucera1, Miroslav Gutten1, Daniel Korenciak1
1Department of Mechatronics and Electronics, Faculty of Electrical Engineering and Information Technology, University of Zilina, Univerzitna 1, 01026 Zilina, Slovakia.
Sensors (Basel, Switzerland)
|September 27, 2025
概括
这项研究引入了一种新的方法来诊断使用燃料注入系统作为传感器的内燃机问题. 它准确地检测出连接器退化和针移动等故障,改善发动机诊断.
科学领域:
- 汽车工程 汽车工程
- 机械工程 机械工程
- 传感器技术 传感器技术
背景情况:
- 内部燃烧发动机需要精确的燃料注入,以获得最佳性能.
- 燃料喷射器的传统诊断方法可能是复杂和侵入性的.
- 监测注入器性能对于发动机效率和排放控制至关重要.
研究的目的:
- 为内燃机开发一种新的,非侵入性诊断方法.
- 为了利用燃料注射系统作为一个集成的传感器进行实时监控.
- 准确检测和诊断常见的注射器故障.
主要方法:
- 分析燃料注入器的电气参数 (电流幅度,线圈充电时间).
- 与注入器针位移,燃料压力和连续电阻相关联的电变化.
- 模拟故障,例如连接器退化 (氧化/磨损),通过改变连续电阻.
- 开发基于当前波形分析的自动诊断系统.
主要成果:
- 减少注射器针开口 (100%至20%) 导致35%的峰值电流减少和0.2 ms的延迟.
- 燃料压力的增加 (0.3至2.5巴) 导致了35%的峰值电流上升和0.4毫秒的延迟.
- 增加的串行电阻 (0.2 Ω到2.0 Ω) 将电流幅度降低了50%左右,并扭曲了波形.
- 自动化系统在故障检测中实现了90%以上的准确性.
结论:
- 燃料喷射器的电气特性是引擎内部状况的可靠指标.
- 提出的方法有效地诊断了注射器针运动,燃料压力变化和连接器退化.
- 使用这种方法的自动诊断系统为发动机故障检测提供了高度准确和高效的解决方案.
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