US 7,321,820 B2
Model-based inlet air dynamics state characterization
Ognyan N. Yanakiev, Canton, Mich. (US); Chan-Chiao Lin, Ann Arbor, Mich. (US); and Sherif H. El Tahry, Troy, Mich. (US)
Assigned to GM Global Technology Operations, Inc., Detroit, Mich. (US)
Filed on Jan. 30, 2006, as Appl. No. 11/342,925.
Prior Publication US 2007/0175452 A1, Aug. 02, 2007
Int. Cl. G06F 17/00 (2006.01); F02N 25/07 (2006.01); F02B 47/08 (2006.01)
U.S. Cl. 701—105  [701/104; 701/108; 123/480; 123/568.16; 123/568.21] 22 Claims
OG exemplary drawing
 
1. An engine control system that includes an exhaust gas recirculation (EGR) valve, comprising:
a first module that determines an EGR error; and
a second module that calculates a fuel injection timing based on said EGR error, wherein operation of an engine is regulated based on said fuel injection timing to reduce emissions during transient operation.