US 12,281,624 B1
Electronic compressor 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. 18/476,489.
Int. Cl. F02D 41/06 (2006.01); F02B 39/10 (2006.01); F02D 41/00 (2006.01)
CPC F02D 41/064 (2013.01) [F02B 39/10 (2013.01); F02D 41/0007 (2013.01); F02D 2200/0406 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An engine system that delivers torque to a driveline of a vehicle, the engine system comprising:
an internal combustion engine (ICE);
a manifold that selectively communicates air into the ICE;
a throttle that moves between an open position that allows air to be directed into and out of the manifold, and a closed position that inhibits air from being directed into and out of the manifold;
a compressor driven by an electric motor, the compressor configured to deliver air toward and away from the manifold; and
a controller that:
determines an ICE start request and, based on the ICE start request, sends a signal to the electric motor to rotate the compressor in a direction that moves air out of the manifold;
receives a signal from a manifold pressure sensor indicative of a measured pressure in the manifold;
determines whether the manifold pressure has reached a threshold pressure suitable to reduce emissions at startup of the ICE;
commands the throttle to be moved to the closed position and stops rotation of the compressor based on the manifold pressure reaching the threshold pressure; and
based on the manifold pressure reaching the threshold pressure subsequent to rotating the compressor in a direction that moves air out of the manifold, commands the engine to crank.