Patent ID: 7310947
Filing Date: 2007-12-25
Classification: F01N,F02B,Y02T

Abstract:
1. An internal combustion engine with a first, a second and a third exhaust gas turbocharger for charging the internal combustion engine, each of the exhaust gas turbochargers comprises a compressor wheel and a turbine wheel, which rotate around a common charger axis, a first exhaust gas feed line arranged to lead to the first exhaust gas turbocharger, a second exhaust gas feed line arranged to lead to the second exhaust gas turbocharger, the three exhaust gas turbochargers having parallel air flows, a carrier housing arranged to hold the three exhaust gas turbochargers, a manifold arranged to collect exhaust gas streams downstream of the first and second exhaust gas turbochargers, and a common exhaust gas discharge line connected to the turbochargers, the three exhaust gas turbochargers being arranged to lie in a common place (E), the two charger axes of the first exhaust gas turbo charger and the second exhaust gas turbo charger are positioned at an angle to each other in an angular range of 55-100 and the charger axis of the third exhaust gas turbocharger lies within the angular range, the third exhaust gas turbo charger being arranged centrally between the first exhaust gas turbocharger and the second exhaust gas turbocharger, wherein a branch line for feeding uncompressed air to the third exhaust gas turbocharger is arranged in the air feed lines so as to feed in uncompressed air to the first gas exhaust gas turbocharger and to the second exhaust gas turbocharger.