柴油机SCR系统OBD功能的诊断策略研究

摘要

在OBD诊断原理研究基础上,通过灵活运用诊断方法和合理设计诊断逻辑框架,构建了基于SCR系统的OBD功能诊断策略.研究表明,所设计的诊断策略能满足OBD认证法规的要求.%Upon the basis of the study on OBD diagnosis theory and by using diagnostic methods flexibly and devising diagnostic logic frame rationally, the diagnostic strategy of OBD function based on SCR system is constructed.The studies show that the OBD diagnostic strategy meets the requirements of OBD certification regulations.