Method for controlling energy recovery system of exhaust line of motor vehicle engine

The invention concerns a method for controlling an energy recovery system (30) of an exhaust line (40) of a motor vehicle engine (1). The energy recovery system comprises a bypass duct (31) pierced into an exhaust duct (41) of the exhaust line and comprising a heat exchanger (32), and a bypass valve...

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Bibliographische Detailangaben
Hauptverfasser:	QUECHON NICOLAS, JACQUOT LAURENT, SHONDA OSOKO
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION 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 POSITIVE-DISPLACEMENT ENGINEPLANTS HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NOT OTHERWISE PROVIDED FOR STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE USE OF WASTE HEAT OF COMBUSTION ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	The invention concerns a method for controlling an energy recovery system (30) of an exhaust line (40) of a motor vehicle engine (1). The energy recovery system comprises a bypass duct (31) pierced into an exhaust duct (41) of the exhaust line and comprising a heat exchanger (32), and a bypass valve (33) arranged in the exhaust duct, at the inlet of the bypass duct, designed to take up different positions. The method comprises the following steps: a) defining (100) values of the injected fuel flow rate, the inlet air flow rate, the temperature and flow rate of the exhaust gases; b) defining (200) an optimum position of the bypass valve on the basis of a fuel consumption saving corresponding to the values defined in a), and an overconsumption of fuel corresponding to the values defined in a) and to the optimum position of the bypass valve; and c) positioning (300) the bypass valve in the optimum position defined in step b).