发明名称 Method for diagnosing operation of a particulate matter sensor
摘要 A method for diagnosing a particulate matter sensor is described. In one example, a liquid is purposefully injected into the exhaust system to verify operation of the particulate matter sensor. Reliability of particulate matter diagnostics may be improved by way of the approach, at least during some conditions.
申请公布号 US9115629(B2) 申请公布日期 2015.08.25
申请号 US201313909907 申请日期 2013.06.04
申请人 Ford Global Technologies, LLC 发明人 Hopka Michael;Van Nieuwstadt Michiel J.
分类号 F01N11/00;F02D41/14;F02D41/22;F01N3/20 主分类号 F01N11/00
代理机构 Alleman Hall McCoy Russell & Tuttle LLP 代理人 Voutyras Julia;Alleman Hall McCoy Russell & Tuttle LLP
主权项 1. A method for diagnosing a particulate matter sensor, comprising: injecting a liquid into an exhaust system before a dewpoint temperature in the exhaust system is exceeded; depositing at least some of the liquid on the particulate matter sensor; and indicating particulate matter sensor degradation responsive to particulate matter sensor conductance.
地址 Dearborn MI US