Diesel particulate filter regeneration control and method

• Main Authors: NANJUNDAREDDY RAJIV B, BLOMS JASON K, RICHARDS TYLER V, LEUSTEK MATTHEW E, COX GLENN B, KAPPAROS DAVID J, KULKARNI VADIRAJ P
• Format: Patent
• Language: Chinese; English
• Published: 04.04.2012
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

An after-treatment device (202) that includes a diesel particulate filter (DPF) (206) requiring periodic regeneration includes a sensor (238) providing a signal (306) indicative of a soot accumulation and at least one device (240) providing an operating parameter (242) indicative of a work mode of the machine (100). A controller (222) determines a soot level (310) and a readiness level (312) based on the work mode of the machine (100), and further classifies the soot level (310) relative to a desired range for initiating a regeneration event and initiates the regeneration event when the soot level (310) falls within the desired range.