CPC F02M 26/49 (2016.02) [F02B 33/34 (2013.01); F02B 33/38 (2013.01); F02B 39/10 (2013.01); F02D 41/0007 (2013.01); F02D 41/0055 (2013.01); F02D 41/006 (2013.01); F02D 41/0065 (2013.01); F02D 41/064 (2013.01); F02D 41/1446 (2013.01); F02M 26/05 (2016.02); F02M 26/33 (2016.02); F02M 26/34 (2016.02); F02M 26/50 (2016.02); F04C 18/126 (2013.01); F04C 28/06 (2013.01); F04C 28/08 (2013.01); F04C 29/04 (2013.01); F02D 2200/021 (2013.01); F02M 26/00 (2016.02); F04C 18/14 (2013.01); F04C 29/02 (2013.01); F04C 2240/30 (2013.01); F04C 2240/81 (2013.01); F04C 2270/0525 (2013.01); F04C 2270/19 (2013.01); Y02T 10/12 (2013.01); Y02T 10/40 (2013.01)] | 2 Claims |
1. A method of operating an exhaust gas recirculation (EGR) pump for an internal combustion engine comprising:
providing an EGR pump assembly including an electric motor coupled to a Roots device having rotors, the EGR pump assembly operably connected to an internal combustion engine;
providing an EGR control unit linked to the EGR pump assembly;
providing sensors linked to the EGR control unit;
performing an engine shut down and determining if an exhaust temperature is less than 5 degrees Celsius (C); and
moving the rotors when the exhaust temperature is determined to be less than 5 degrees C.
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