| abstract |
A diesel particulate filer unit 1 comprising a filter 4 for capturingnparticulates in the exhaust gas G of an engine E, and a regeneration controlnmeans 50 judging the start of the regeneration operation of said filter 4,naccording to the comparison between the value measured by exhaust pressurensensors 51, 52 and a predetermined exhaust pressure judgment value ΔPes,nPes, Res wherein said regeneration control means 50 is configured to estimatenthe ash accumulated quantity SAsh of ash leaked into the exhaust gas G andnaccumulated in said filer 4, and correct said exhaust pressure judgment valuenΔPes, Pes, Res for judging the regeneration operation start based on this.nThereby, a diesel particulate filter that can judge the regeneration start timingnappropriately, taking accumulation and deposit of ash generated from lubricantnoil on the filter into consideration, and remove particulates efficiently all the waynpreventing the filter from clogging is provided. |