Device for diagnosing function of collecting particle sensor to determine particle contents in exhaust gas of diesel engine, has particle sensor soot coated with functional layer for converting long chain hydrocarbons

摘要

The device has a particle sensor (10) soot coated with a functional layer (15) for converting long chain hydrocarbons, where the functional layer is a zeolite such as H-erionite, H-ZSM-5, beta-zeolite and Y zeolite. The particle sensor includes two mutually cross interdigital electrodes (12, 13) on a surface of the particle sensor. The surface and the electrodes are coated with the functional layer. The electrodes are formed from a material, and the material is immiscible or slightly catalytic active material for conversion of nitrogen monoxide to nitrogen dioxide. An independent claim is also included for a method for diagnosing a function of a collecting particle sensor to determine particle contents in an exhaust gas of an internal combustion engine.