A method for operating an internal combustion engine (100) and exhaust system therefor includes the step of initiating a regeneration event in a diesel particulate filter (DPF 109) (401). A first oxygen concentration (213) of a gas upstream of the DPF 109, and a second oxygen concentration (215) of the gas downstream of the DPF 109 are sensed (403) to infer a rate of combustion of material in the DPF (405) based on the difference between the first (213) and the second (215) oxygen concentrations. The rate of combustion is compared to a threshold value (409) and the regeneration event in the DPF 109 is terminated (411) if the rate of combustion is above the threshold.
申请公布号
WO2007027576(A2)
申请公布日期
2007.03.08
申请号
WO2006US33472
申请日期
2006.08.29
申请人
INTERNATIONAL ENGINE INTELLECTUAL PROPERTY COMPANY, LLC;BARASA, PATRICK;GUNDRUM, TIMOTHY