US 12,253,018 B2
Turbocharger
Robert Szolak, Freiburg (DE); Paul Beutel, Freiburg (DE); and Bernd Danckert, Mauren (LI)
Assigned to Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Munich (DE)
Filed by FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V., Munich (DE)
Filed on Dec. 11, 2023, as Appl. No. 18/534,893.
Application 18/534,893 is a continuation of application No. PCT/EP2022/065807, filed on Jun. 10, 2022.
Claims priority of application No. 102021205972.4 (DE), filed on Jun. 11, 2021.
Prior Publication US 2024/0110498 A1, Apr. 4, 2024
Int. Cl. F01N 3/28 (2006.01); F01N 3/10 (2006.01); F01N 13/00 (2010.01); F02B 37/18 (2006.01); F02C 6/12 (2006.01)
CPC F01N 3/28 (2013.01) [F02B 37/18 (2013.01); F01N 3/106 (2013.01); F01N 13/009 (2014.06); F01N 2270/00 (2013.01); F01N 2340/06 (2013.01); F02C 6/12 (2013.01); F05D 2230/21 (2013.01); F05D 2230/53 (2013.01); F05D 2250/40 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A turbocharger (1) comprising:
a compressor arrangement (2) configured to compress fresh air entering an internal combustion engine, the compressor arrangement comprising at least one compressor housing (20) having a fresh air inlet (201), a fresh air outlet (202), and at least one compressor impeller arranged in the compressor housing (20);
at least one exhaust gas turbine (3) configured to drive the compressor arrangement (2), the at least one exhaust gas turbine comprising at least one turbine housing (30) having an exhaust gas inlet (301), an exhaust gas outlet (302), and at least one turbine wheel being arranged in the turbine housing (30);
a heated catalytic converter (4) configured to at least partially convert supplied fuel with fresh air and/or exhaust gas, the heated catalytic converter (4) comprising a catalytic converter housing (40) having a gas inlet (401) and a gas outlet (402) and a fuel inlet (403); and
a third overflow channel (35) having a first end (351) connected to the gas outlet (402) of the catalytic converter housing (40) and a second end (352) connected to the exhaust gas outlet (302) of the turbine housing (30), such that a product gas generated in the heated catalytic converter (4) bypasses the turbine (3) and is directed into an exhaust pipe (71) downstream of the turbine (3), via the third overflow channel (35);
wherein:
the catalytic converter housing (40) and the compressor housing (20) are in thermal contact on at least one part surface (45); and/or
the catalytic converter housing (40) and the turbine housing (30) are in thermal contact on at least one part surface (45).