Method of controlling an exhaust gas temperature of an internal combustion engine

A method of controlling an exhaust gas temperature at the inlet of a particulate filter located in an exhaust system of an internal combustion engine. The method controls the exhaust gas temperature using at least a post-injection (PostQ), whose quantity is estimated as function of an exhaust gas vo...

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Bibliographische Detailangaben
Hauptverfasser:	ANGELA VITIELLO, ROBERTO ARGOLINI, GIUSEPPE SCHIAVONE
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION 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 GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS 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
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Beschreibung
Zusammenfassung:	A method of controlling an exhaust gas temperature at the inlet of a particulate filter located in an exhaust system of an internal combustion engine. The method controls the exhaust gas temperature using at least a post-injection (PostQ), whose quantity is estimated as function of an exhaust gas volumetric flowrate. The post-injection quantity may be the sum of a proportional, an integral and a derivative, each based on the exhaust gas volumetric flowrate, and a temperature error between a set point of the exhaust gas temperature and a measured temperature at the filter inlet. A maximum and/or minimum post-injection quantity in a closed loop control is a product of first and second contributes, which are functions of the volumetric flowrate and temperature at the filter inlet respectively.