Exhaust gas purifying apparatus and method for internal combustion engine, and engine control unit

An exhaust gas purifying apparatus and method for an internal combustion engine, and an engine control unit are provided for appropriately regenerating a filter by supplying neither too much nor too less intake air when the filter is regenerated by supplying an unburnt fuel into exhaust gases. A fil...

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Bibliographische Detailangaben
1. Verfasser:	ISHIHARA YOSHINORI
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:	An exhaust gas purifying apparatus and method for an internal combustion engine, and an engine control unit are provided for appropriately regenerating a filter by supplying neither too much nor too less intake air when the filter is regenerated by supplying an unburnt fuel into exhaust gases. A filter is disposed in the exhaust system for collecting particulate matters included in exhaust gases. An ECU instructs to burn particulate matters deposited in the filter to execute a regenerating operation for regenerating the filter. An intake throttle valve adjusts the amount of intake air flowing through an intake system of the internal combustion engine. The ECU controls the intake throttle valve to narrow down an opening of the intake throttle valve during execution of the regenerating operation by the regenerating operation executing means. The ECU also corrects the opening of the intake throttle valve in accordance with at least one of the temperature of the internal combustion engine, the atmospheric pressure, and the intake air temperature detected by at least one of sensors.