초록

The invention relates to a device for cooling media or liquids, in particular the inlet air and exhaust gas from a motor vehicle.

대표청구항 ▼

The invention claimed is: 1. An apparatus suitable for cooling charge air and exhaust gas in a motor vehicle with an internal combustion engine, comprising: a first heat exchanger adapted to cool a recirculated exhaust-gas stream; a second heat exchanger adapted to cool the exhaust-gas stream, said

The invention claimed is: 1. An apparatus suitable for cooling charge air and exhaust gas in a motor vehicle with an internal combustion engine, comprising: a first heat exchanger adapted to cool a recirculated exhaust-gas stream; a second heat exchanger adapted to cool the exhaust-gas stream, said second heat exchanger located downstream from the first heat exchanger; and a third heat exchanger adapted to cool a charge-air stream, wherein the apparatus is adapted to combine the exhaust-gas stream and charge-air stream after the exhaust-gas stream has been cooled by the first heat exchanger and the second heat exchanger and after the charge-air stream has been cooled by the third heat exchanger, and wherein the first heat exchanger and the second heat exchanger are separate heat exchangers and are formed as a structural unit. 2. The apparatus as claimed in claim 1, further comprising a valve adapted to control the recirculated exhaust-gas stream. 3. The apparatus as claimed in claim 1, further comprising fluid passages that separately route and cool the exhaust gas and the charge air. 4. The apparatus as claimed in claim 1, further comprising a mixing chamber that is adapted to combine the exhaust-gas stream and charge-air stream after the exhaust-gas stream has been cooled by the first heat exchanger and the second heat exchanger and after the charge-air stream has been cooled by the third heat exchanger, wherein the mixing chamber comprises a portion of a heat exchanger and is adapted to be cooled. 5. The apparatus as claimed in claim 1, further comprising a mixing chamber that is adapted to combine the exhaust-gas stream and charge-air stream after the exhaust-gas stream has been cooled by the first heat exchanger and the second heat exchanger and after the charge-air stream has been cooled by the third heat exchanger, wherein the mixing chamber is part of a heat exchange module. 6. The apparatus as claimed in claim 1, further comprising a mixing chamber that is adapted to combine the exhaust-gas stream and charge-air stream after the exhaust-gas stream has been cooled by the first heat exchanger and the second heat exchanger and after the charge-air stream has been cooled by the third heat exchanger, wherein the mixing chamber is part of a heat exchanger. 7. The apparatus as claimed in claim 6, wherein the exhaust-gas stream and the charge-air stream are mixed at an inlet of the heat exchanger. 8. The apparatus as claimed in claim 6, wherein the exhaust-gas stream and the charge-air stream are mixed at an exit end of the heat exchanger. 9. An apparatus suitable for cooling charge air and exhaust gas in a motor vehicle with an internal combustion engine, comprising: a first heat exchanger adapted to cool a recirculated exhaust-gas stream; a second heat exchanger adapted to cool the exhaust-gas stream; and a third heat exchanger adapted to cool a charge-air stream, wherein the apparatus is adapted to combine the exhaust-gas stream and charge-air stream after the exhaust-gas stream has been cooled by the first heat exchanger and the second heat exchanger and after the charge-air stream has been cooled by the third heat exchanger, and wherein at least two of the first and/or the second and/or the third heat exchanger are formed as a structural unit. 10. The apparatus as claimed in claim 9, further comprising a mixing chamber that is adapted to combine the exhaust-gas stream and charge-air stream after the exhaust-gas stream has been cooled by the first heat exchanger and the second heat exchanger and after the charge-air stream has been cooled by the third heat exchanger, wherein the mixing chamber comprises a portion of a heat exchanger and is adapted to be cooled. 11. An apparatus suitable for cooling charge air and exhaust gas in a motor vehicle with an internal combustion engine, comprising: a first heat exchanger adapted to cool a recirculated exhaust-gas stream; and a second heat exchanger adapted to cool a mixed exhaust-gas/charge-air stream that is formed by combining the exhaust-gas stream cooled by the first heat exchanger with a charge-air stream, wherein the first heat exchanger and the second heat exchanger are separate heat exchangers and are formed as a structural unit. 12. The apparatus as claimed in claim 11, wherein the first heat exchanger and/or the second heat exchanger is fixed to the engine. 13. The apparatus as claimed in claim 11, wherein the first heat exchanger and/or the second heat exchanger is integrated in a cooling module. 14. The apparatus as claimed in claim 11, further comprising a mixing chamber that is adapted to form the mixed exhaust-gas/charge-air stream by combining the exhaust-gas stream cooled by the first heat exchanger with the charge-air stream, wherein the mixing chamber comprises a portion of a heat exchanger and is adapted to be cooled. 15. An apparatus suitable for cooling charge air and exhaust gas in a motor vehicle with an internal combustion engine, comprising: a first heat exchanger adapted to cool a recirculated exhaust-gas stream; and a second heat exchanger adapted to cool a mixed exhaust-gas/charge-air stream that is formed by combining the exhaust-gas stream cooled by the first heat exchanger with a charge-air stream, wherein the exhaust gas is recirculated upstream of a turbine. 16. The apparatus as claimed in claim 15, further comprising a mixing chamber that is adapted to form the mixed exhaust-gas/charge-air stream by combining the exhaust-gas stream cooled by the first heat exchanger with the charge-air stream, wherein the mixing chamber comprises a portion of a heat exchanger and is adapted to be cooled.