METHOD FOR DETECTING AN UNSEALED LOCATION IN A HEAT RECOVERY SYSTEM

The invention relates to a method for detecting an unsealed location in a heat recovery system (12; 12a) of an internal combustion engine (1) of a motor vehicle. The heat recovery system (12) has at least one working medium, in particular a combustible working medium, and a working medium circuit (1...

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Bibliographische Detailangaben
Hauptverfasser:	THALER MARTIN, MAHLER SUSANNE, GLENSVIG MICHAEL
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL ENGINE PLANTS NOT OTHERWISE PROVIDED FOR ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METHODS OF STEAM GENERATION STEAM ACCUMULATORS STEAM BOILERS STEAM ENGINE PLANTS STEAM ENGINES STEAM GENERATION WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to a method for detecting an unsealed location in a heat recovery system (12; 12a) of an internal combustion engine (1) of a motor vehicle. The heat recovery system (12) has at least one working medium, in particular a combustible working medium, and a working medium circuit (13; 3a) with at least one evaporator (14; 14a), a pump (15; 15a), and at least one expansion machine(16; 16a), wherein exhaust gas of the internal combustion engine (1) flows through the evaporator (14; 14a). The aim of the invention is to allow an early and reliable detection of leakages in the evaporator (14, 14a) of the heat recovery system (12) as simply as possible. This is achieved in that at least one NH3 sensor (20; 20a) is arranged in the exhaust gas flow path (2) downstream of the evaporator (14; 14a), and the exhaust gas in the exhaust gas flow path (2) is measured by the NH3 sensor (20; 20a). The occurrence of at least one abnormally high NH3 measurement value, preferably after carrying out a plausibilit