首页>
外国专利>
NOX SENSOR REASONABLENESS DIAGNOSTIC DEVICE AND REASONABLENESS DIAGNOSTIC METHOD, AND EXHAUST PURIFICATION DEVICE FOR INTERNAL-COMBUSTION ENGINE
NOX SENSOR REASONABLENESS DIAGNOSTIC DEVICE AND REASONABLENESS DIAGNOSTIC METHOD, AND EXHAUST PURIFICATION DEVICE FOR INTERNAL-COMBUSTION ENGINE
展开▼
机译：内燃机的NOX传感器的合理诊断装置和合理的诊断方法及净化装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
A NOx sensor reasonableness diagnostic device and a NOx sensor reasonableness diagnostic method by which the reasonableness of a NOx sensor can be diagnosed at a desired timing without deteriorating drivability and fuel efficiency even during operation of an internal-combustion engine, and an exhaust purification device including the NOx sensor reasonableness diagnostic device. A NOx sensor reasonableness diagnostic device for diagnosing the reasonableness of a NOx sensor disposed downstream from a reducing catalyst comprises a sensor value storage section for monitoring the transition of the sensor value detected by the NOx sensor, a reducing agent supply amount designation section for designating the supply amount of the reducing catalyst such that a predetermined amount of ammonia flows out to the downstream side of the reducing catalyst, and a reasonableness judgment section for judging the reasonableness of the NOx sensor by judging whether the transition of the sensor value has been changed by the outflow of the predetermined amount of ammonia to the downstream side of the reducing catalyst.
展开▼
