METHOD FOR DETECTING AN UNSEALED LOCATION IN A HEA

专利名称：METHOD FOR DETECTING AN UNSEALED

LOCATION IN A HEAT RECOVERY SYSTEM

发明人：GLENSVIG, Michael,MAHLER,

Susanne,THALER, Markus

申请号：EP17742937.0申请日：20170712公开号：EP3485148A1公开日：20190522

摘要：The invention relates to a method for detecting an unsealed location in a heatrecovery system (12; 12a) of an internal combustion engine (1) of a motor vehicle. Theheat recovery system (12) has at least one working medium, in particular a combustibleworking 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 gasof the internal combustion engine (1) flows through the evaporator (14; 14a). The aim ofthe 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 atleast one NH sensor (20; 20a) is arranged in the exhaust gas flow path (2) downstream ofthe evaporator (14; 14a), and the exhaust gas in the exhaust gas flow path (2) is measuredby the NH sensor (20; 20a). The occurrence of at least one abnormally high NH

measurement value, preferably after carrying out a plausibility check, implies a leakageof the evaporator (14; 14a).

申请人：AVL List GmbH,FPT Industrial S.p.A.,Iveco S.p.A.

地址：Hans-List-Platz 1 8020 Graz AT,Via Puglia 15 10156 Torino IT,Via Puglia 35 10156

Torino IT

国籍：AT,IT,IT

代理机构：Babeluk, Michael

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