US 12,078,114 B1
Electronic turbine and engine phaser for reduction of cold start emission and noise vibration and harshness
Pavan Kumar Mukkara Srinivas, Troy, MI (US); and Ronald A Reese, II, Goodrich, MI (US)
Assigned to FCA US LLC, Auburn Hills, MI (US)
Filed by FCA US LLC, Auburn Hills, MI (US)
Filed on Sep. 28, 2023, as Appl. No. 18/476,503.
Int. Cl. F02D 13/02 (2006.01); F02D 41/00 (2006.01); F02D 41/06 (2006.01)
CPC F02D 13/0215 (2013.01) [F02D 41/0007 (2013.01); F02D 41/064 (2013.01); F02D 2200/0406 (2013.01)] 13 Claims
OG exemplary drawing
 
10. A method of operating an engine system that delivers torque to a driveline of a vehicle, the method comprising:
receiving a start request in an engine system having an internal combustion engine (ICE);
sending a signal, based on receiving the start request, to an engine phaser to open identified intake and exhaust valves creating a pathway through the ICE;
sending a signal, based on receiving the start request, to an electric motor to rotate an electric turbine (eTurbine) to move air in a direction out of the manifold thereby creating a vacuum through the pathway in the ICE and moving air out of the manifold;
receiving a signal from a manifold air pressure (MAP) sensor indicative of a measured pressure in the manifold;
determining whether the measured pressure in the manifold satisfies a threshold, the threshold corresponding to a reduced pressure in the manifold suitable to reduce emissions at startup of the ICE;
sending a signal to the electric motor to stop rotating the eTurbine based on the measured pressure satisfying the threshold;
sending a signal to the ePhaser to return the intake and exhaust valves to a start position; and
sending a signal, based on the measured pressure satisfying the threshold, to the engine system to crank the ICE.