US 12,110,816 B1
Hybrid vehicle gasoline particulate filter regeneration
Brett Schubring, Macomb, MI (US); and Brian E Hallgren, Milford, MI (US)
Assigned to FCA US LLC, Auburn Hills, MI (US)
Filed by FCA US LLC, Auburn Hills, MI (US)
Filed on Sep. 1, 2023, as Appl. No. 18/459,608.
Int. Cl. F01N 3/02 (2006.01); F01N 3/021 (2006.01); F01N 3/023 (2006.01)
CPC F01N 3/023 (2013.01) [F01N 3/021 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A series hybrid electric vehicle (HEV), comprising:
one or more electric traction motors configured to provide drive torque to one or more vehicle axles;
an internal combustion engine;
a motor/generator configured to drive the internal combustion engine or be driven by the internal combustion engine to generate electricity to charge a high voltage battery and/or drive the one or more electric traction motors;
an exhaust aftertreatment system having a gasoline particulate filter (GPF); and
a control system including a controller for monitoring and performing a regeneration operation of the GPF, wherein the controller is programmed to:
determine the GPF needs to be regenerated;
determine if a temperature of the GPF meets or exceeds a predetermined threshold indicating a GPF regeneration can occur;
if the GPF temperature does not meet or exceed the predetermined threshold, load the engine via the motor/generator to increase an exhaust gas temperature to heat the GPF to the predetermined threshold; and
if the temperature meets or exceeds the predetermined threshold, operate the internal combustion engine in fuel shut-off to generate a flow of air to the GPF to initiate the GPF regeneration.