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METHOD FOR OPERATING AN EXHAUST GAS AFTERTREATMENT, DEVICE FOR CONTROLLING AN EXHAUST GAS AFTER TREATMENT, EXHAUST GAS AFTERTREATMENT AND INTERNAL COMBUSTION ENGINE HAVING EXHAUST GAS AFTER TREATMENT
METHOD FOR OPERATING AN EXHAUST GAS AFTERTREATMENT, DEVICE FOR CONTROLLING AN EXHAUST GAS AFTER TREATMENT, EXHAUST GAS AFTERTREATMENT AND INTERNAL COMBUSTION ENGINE HAVING EXHAUST GAS AFTER TREATMENT
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机译:处理排气的方法,处理后的排气控制装置,处理后的排气以及处理后的排气内燃发动机
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摘要
A method and a device for operating an exhaust gas aftertreatment, wherein a diesel particulate filter is regenerated during the operation, in particular passively regenerated, wherein a corrected differential pressure is calculated from a current differential pressure across the diesel particulate filter at a current exhaust gas volumetric flow rate and with a current correction factor. The current correction factor is determined by determining a lower differential pressure in a predetermined time interval at a defined exhaust gas volumetric flow rate, in particular in a specified exhaust gas volumetric flow rate interval around the defined exhaust gas volumetric flow rate, and comparing the lower differential pressure with a specified current reference value and, depending thereon, calculating a new correction factor or retaining the previous correction factor as the current correction factor.
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