Detection of soot burn in a vehicle

A method of controlling soot burn in a diesel particulate filter (DPF) of a vehicle comprises deriving a gradient value from a change in a measured pressure difference across the DPF, and controlling regeneration of the DPF in response to the derived gradient value. Differential pressure may be meas...

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Bibliographische Detailangaben
Hauptverfasser:	James Donnelly, James Wright, James Bromham, Kim Ford, Norman Hiam Opolsky
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	A method of controlling soot burn in a diesel particulate filter (DPF) of a vehicle comprises deriving a gradient value from a change in a measured pressure difference across the DPF, and controlling regeneration of the DPF in response to the derived gradient value. Differential pressure may be measured by respective downstream and upstream pressure sensors. Preferably, the pressure difference normalized by dividing by the corresponding measured volume flow of exhaust gas through the DPF.