US 12,006,896 B2
EGR pump system and control method of EGR pump
Douglas Anthony Hughes, Novi, MI (US); Brandon Dennis Biller, Ferndale, MI (US); Jim Kevin Spring, Milford, MI (US); Jesse Drummond, Rochester Hills, MI (US); and Matthew Fortini, Allen Park, MI (US)
Assigned to Eaton Intelligent Power Limited, Pembroke (IE)
Filed by EATON INTELLIGENT POWER LIMITED, Dublin (IE)
Filed on May 19, 2023, as Appl. No. 18/320,777.
Application 18/320,777 is a continuation of application No. 16/962,459, granted, now 11,668,269, previously published as PCT/EP2019/051132, filed on Jan. 17, 2019.
Claims priority of provisional application 62/736,161, filed on Sep. 25, 2018.
Claims priority of provisional application 62/733,340, filed on Sep. 19, 2018.
Claims priority of provisional application 62/674,872, filed on May 22, 2018.
Claims priority of provisional application 62/662,521, filed on Apr. 25, 2018.
Claims priority of provisional application 62/660,497, filed on Apr. 20, 2018.
Claims priority of provisional application 62/629,461, filed on Feb. 12, 2018.
Claims priority of provisional application 62/618,412, filed on Jan. 17, 2018.
Prior Publication US 2023/0374958 A1, Nov. 23, 2023
Int. Cl. F02M 26/49 (2016.01); F02B 33/34 (2006.01); F02B 33/38 (2006.01); F02B 39/10 (2006.01); F02D 41/00 (2006.01); F02D 41/06 (2006.01); F02D 41/14 (2006.01); F02M 26/00 (2016.01); F02M 26/05 (2016.01); F02M 26/33 (2016.01); F02M 26/34 (2016.01); F02M 26/50 (2016.01); F04C 18/12 (2006.01); F04C 18/14 (2006.01); F04C 28/06 (2006.01); F04C 28/08 (2006.01); F04C 29/02 (2006.01); F04C 29/04 (2006.01)
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
OG exemplary drawing
 
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.