付雨民,钱立运,王宏丽,等.汽油机颗粒捕集器低温环境失效诊断研究[J].内燃机工程,2022,43(3):94-99.
汽油机颗粒捕集器低温环境失效诊断研究
Study of Failure Diagnosis of Gasoline Particulate Filter at Low Environment Temperatures
DOI：10.13949/j.cnki.nrjgc.2022.03.013
关键词:汽油机颗粒捕集器  在线诊断  压差模型  故障移除
Key Words:gasoline particulate filter（GPF）  on-board diagnosis（OBD）  deltapressure model  removal of fault
基金项目:
作者单位E-mail
付雨民* 中国环境科学研究院，北京 100012 fuym@vecc.org.cn 
钱立运* 中国环境科学研究院，北京 100012 qly_peter@vecc.org.cn 
王宏丽 中国环境科学研究院，北京 100012  
赵海光 中国环境科学研究院，北京 100012  
韦崇明 标志雪铁龙（中国）汽车贸易有限公司 上海分公司， 上海 200233  
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摘要:探讨并验证了轻型汽车在低温环境下对汽油机颗粒捕集器（gasoline particulate filter， GPF）完成诊断要求的可行性，在-30 ℃到-10 ℃范围内的多种环境下进行试验，采集了发动机在低温下起动后GPF两端温度和压力信号数据，结果表明即使在-30 ℃的环境下，温度和压力传感器仍然能够正常工作，且GPF两端温度和压力数据的变化趋势与常温状态下相似，能够较好区分出GPF是否存在移除或破损的异常情况。
Abstract:The diagnostic requirements of gasoline particulate filter（GPF） for light-duty vehicles at low-temperature environment was investigated and the feasibility of fulfilling these requirements was verified. Tests were carried out at variable environment temperatures ranging from -30 ℃ to -10 ℃. And the temperature and pressure signal data at both ends of GPF were collected after the engine was started under these temperatures. The results showed that the temperature and pressure sensors worked normally even at -30 ℃. Moreover， the temperature and pressure at both ends of GPF had similar variation tendencies with that under normal temperatures. Whether GPF was removed or damaged could be detected at low-temperature conditions.
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