Method for Detecting an Unsealed Location in a Hea

专利名称：Method for Detecting an Unsealed Location

in a Heat Recovery System of an InternalCombustion Engine

发明人：Klemens Neunteufl,Gerald Gradwohl,Helmut

Altendorfer,Fabio Cococcetta,ThomasEckhardt

申请号：US157521申请日：20160819

公开号：US20180252609A1公开日：20180906

专利附图：

摘要：The invention relates to a method for detecting an unsealed location in a heatrecovery system () of an internal combustion engine () of a motor vehicle. The heatrecovery system () has at least one combustible working medium, a working mediumcircuit () with at least one EGR evaporator (), a pump (), and at least one expansionmachine (). The aim of the invention is to allow an early and reliable detection of leakagesin the EGR evaporator () of a heat recovery system () in the simplest manner possible. Thisis achieved in that the internal combustion engine () is operated in the overrun mode, theoxygen concentration in the exhaust gas is ascertained and compared with a definedlower threshold, and if the lower threshold is undershot, a leakage in the EGR evaporator() is detected.

申请人：AVL LIST GMBH,IVECO S.P.A.,FPT INDUSTRIAL S.P.A.

地址：GRAZ AT,TORINO IT,TORINO IT

国籍：AT,IT,IT

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