Method and apparatus for exhaust gas posttreatment in internal combustion engines

A method and an apparatus for posttreatment of exhaust gases of internal combustion engines after an engine operation includes an intake system and an exhaust gas treatment system with an exhaust gas catalytic converter. Secondary air that originates in an air source can be delivered to the exhaust...

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Bibliographische Detailangaben
Hauptverfasser:	HILLER BURKHARD, GLENZ ANDREAS
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES CYCLICALLY OPERATING VALVES FOR MACHINES OR 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 SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS
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Beschreibung
Zusammenfassung:	A method and an apparatus for posttreatment of exhaust gases of internal combustion engines after an engine operation includes an intake system and an exhaust gas treatment system with an exhaust gas catalytic converter. Secondary air that originates in an air source can be delivered to the exhaust gas treatment system at a first secondary air inlet. After an engine operation, with the exhaust gas catalytic converter at operating temperature, the throttle device in the intake system is closed. After the engine operation, the engine is shut off in a phase relationship in which inlet/outlet valves of at least one combustion chamber of the engine are open. By means of the air source, an air flow is generated, which discharges at a further inlet point in the intake system of the engine and flows through or bathes the components in the direction of the exhaust gas catalytic converter at operating temperature in the exhaust gas treatment system.