US 11,692,500 B2
Internal combustion engine system
Mathias Magnusson, Gothenburg (SE); Fredrik Blomgren, Hisings Kärra (SE); and Lars Carlhammar, Lindome (SE)
Assigned to Volvo Truck Corporation, Gothenburg (SE)
Filed by Volvo Truck Corporation, Gothenburg (SE)
Filed on Sep. 22, 2021, as Appl. No. 17/481,807.
Claims priority of application No. 20197959 (EP), filed on Sep. 24, 2020.
Prior Publication US 2022/0090566 A1, Mar. 24, 2022
Int. Cl. F02D 41/02 (2006.01); F02M 26/15 (2016.01); F02M 26/34 (2016.01); F02M 26/35 (2016.01); F02M 26/06 (2016.01); F02D 41/00 (2006.01); F01N 3/20 (2006.01); F01N 9/00 (2006.01)
CPC F02D 41/0255 (2013.01) [F01N 3/2006 (2013.01); F01N 9/00 (2013.01); F02D 41/0055 (2013.01); F02D 41/024 (2013.01); F02M 26/06 (2016.02); F02M 26/15 (2016.02); F02M 26/34 (2016.02); F02M 26/35 (2016.02); F01N 3/2013 (2013.01); F01N 3/2033 (2013.01); F01N 2240/14 (2013.01); F01N 2240/16 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An internal combustion engine system, comprising:
an internal combustion engine (ICE),
an exhaust aftertreatment system (EATS) located downstream of said ICE and comprising one or more exhaust aftertreatment devices,
an exhaust gas duct fluidly connecting said ICE and said EATS,
an exhaust gas recirculation duct being in fluid communication with said exhaust gas duct and fluidly connecting a first point downstream of said ICE and a second point upstream thereof,
an exhaust gas recirculation (EGR) pump arranged in said exhaust gas recirculation duct, wherein the internal combustion engine system has a normal operation mode for transporting, by means of the EGR pump, at least a portion of said exhaust gas from said first point to said second point,
a heating device arranged upstream of at least one of said exhaust aftertreatment devices of said EATS and in that the internal combustion engine system has a pre-heat operation mode for transporting, by means of the EGR pump, exhaust gas and/or air through said heating device and then to said at least one of said exhaust aftertreatment devices, and
a valve arranged downstream of said EGR pump, said valve comprising:
a first outlet fluidly connecting said EGR pump and said ICE, and
a second outlet fluidly connecting said EGR pump and a diverter duct, said diverter duct fluidly connecting said EGR pump and a recombination point at said exhaust gas duct upstream of said heating device.