基于OBD技术的轻型柴油车DPF系统诊断策略的研究

A Research on the Diagnostic Strategy for the DPF System of Light-duty Diesel Vehicle Based on OBD Technology

在OBD诊断原理的基础上,通过灵活运用诊断方法和合理设计诊断逻辑框架,构建了轻型柴油车DPF系统的OBD功能诊断策略,并进行了实车试验。结果表明,所设计的诊断策略能满足OBD认证法规的要求。

On the base of on-board diagnosis（OBD） theory,and by using diagnostic methods flexibly and devising diagnostic logic frame rationally,a OBD function diagnostic strategy for the diesel particle filter（DPF） system of light-duty diesel vehicle is constructed,which is then verified by real vehicle test.The results show that the diagnostic strategy devised can meet the requirements of OBD certification regulations.