Condenser in a Turbo-Compressor System and Method for Operating One Such System

Abstract

The invention relates to an system, especially a turbo-compressor system pertaining to a motor vehicle comprising an internal combustion engine with exhaust gas recirculation. Said system comprises an exhaust gas cooler ( 2 ) and a charge air cooler ( 1 ) for cooling recirculate exhaust gases and/or charge air, a compressor (V) for compressing the charge air, and at least on condenser ( 3 ).

1 . An arrangement, in particular a turbocharger arrangement of a motor vehicle having an internal combustion engine, with exhaust gas recirculation, wherein the arrangement has an exhaust gas cooler and a charge air cooler for cooling recirculated exhaust gas and/or charge air and, a compressor for compressing the charge air, characterized in that the arrangement has at least one condensate separator.  
     
     
         2 . The arrangement as claimed in  claim 1 , wherein the condensate separator is a centrifugal separator or cyclone separator.  
     
     
         3 . The arrangement as claimed in  claim 1 , wherein the condensate separator has a turbulence generator which causes the exhaust gas stream or the charge air stream to rotate so that at least some of the condensate droplets are deposited on the wall.  
     
     
         4 . The arrangement as claimed in  claim 3 , wherein an annular duct with an outflow opening for the condensate is arranged downstream of the turbulence generator.  
     
     
         5 . The arrangement as claimed in  claim 1 , wherein the condensate separator is a filter.  
     
     
         6 . The arrangement as claimed in  claim 1 , wherein multi-stage condensate separation is provided.  
     
     
         7 . The arrangement as claimed in  claim 1 , wherein a collector vessel is arranged at the condensate outlet.  
     
     
         8 . The arrangement as claimed in  claim 1 , wherein a valve is provided for throttling the exhaust gas stream or the charge air stream.  
     
     
         9 . The arrangement as claimed in  claim 1 , wherein a pump is provided for sucking in the collected condensate.  
     
     
         10 . The arrangement as claimed in  claim 1 , wherein the condensate separator is arranged directly downstream of the cooler, in particular the exhaust gas cooler.  
     
     
         11 . The arrangement as claimed in  claim 1 , wherein the condensate separator is arranged in a region in which the temperature of the exhaust gas stream or of the charge air stream reaches or drops below the dew point.  
     
     
         12 . The arrangement as claimed in  claim 1 , wherein the condensate separator is coupled or permanently connected to the shaft of the compressor.  
     
     
         13 . The arrangement as claimed in  claim 12 , wherein the condensate separator has an expeller element or centrifuge element which is arranged on the shaft in a rotationally fixed fashion or formed by a region of the shaft.  
     
     
         14 . The arrangement as claimed in  claim 13 , wherein the expeller element or centrifuge element is arranged upstream of the impeller wheel of the compressor in the normal direction of flow of the charge air and deflects the charge air stream by at least 90°, preferably by two times 180°.  
     
     
         15 . The arrangement as claimed in  claim 12 , wherein the condensate separator is arranged in the compressor housing and/or is designed so as to be integrated into the compressor housing.  
     
     
         16 . The arrangement as claimed in  claim 1  wherein the arrangement has a thermal condensate disposal means.  
     
     
         17 . The arrangement as claimed in  claim 16 , wherein the thermal condensate disposal means is of multi-stage design.  
     
     
         18 . The arrangement as claimed in  claim 16 , wherein the thermal condensate disposal means is connected to a plurality of condensate separators via lines.  
     
     
         19 . A method for operating a turbocharger, in particular of a motor vehicle, having an internal combustion engine in which exhaust gas is recirculated and fed to the charge air, wherein the exhaust gas or charge air is deflected or directed through a filter in a region in which the exhaust gas or the charge air is at a temperature which corresponds to the dew point or drops below it.  
     
     
         20 . The method as claimed in  claim 19 , wherein the exhaust gas stream which flows essentially in a straight direction or the air stream is deflected in a region directly downstream of a cooler, in particular an exhaust gas cooler, or is directed through the filter.  
     
     
         21 . The method as claimed in  claim 20 , wherein a speed component is applied to the in the tangential direction so that a rotational movement is superimposed on the longitudinal movement.  
     
     
         22 . The method as claimed in  claim 19 , wherein the average tangential speed component is at least as large as the average speed component in the longitudinal direction.  
     
     
         23 . The method as claimed in  claim 19 , wherein the average tangential speed component is at least twice as large as the average speed component in the longitudinal direction.  
     
     
         24 . The method as claimed in  claim 19 , wherein the condensate which collects at an expeller element or centrifuge element is thrown outwards by means of centrifugal force.  
     
     
         25 . The method as claimed in  claim 19 , wherein the condensate is evaporated by means of a thermal condensate disposal means, the acids contained in the condensate are converted and the vapor which is produced and/or the gases are fed again to the exhaust gas stream.