Method of diagnosis of sensors, method of assistance to termitores, half carrying signs that performs a tangu00cdvel a program of instructions legu00cdveis by machine executu00c1veis by digital processing apparatus to perform diagnostic operations of the rationality of a Series of sensors.Post treatment system of exaustu00c3o engine capable to diagnose the rationality of thermistor, diagnostic apparatus of temperature sensor and method of diagnosis of rationality of thermistors in treatment of exaustu00c3o engines

摘要

A sensor diagnostic method, such as to determine rationality of one of three temperature sensors used in an exhaust aftertreatment system, includes determining the temperature difference between the first and second sensor, determining the temperature difference between the second and third sensor, determining whether the temperature differences are within an acceptable threshold range and comparing the two temperature differences to determine which sensor is in error, if any.