Browse Publications Technical Papers 2000-01-0258
2000-03-06

An Algorithm to Compensate for Air Charge Prediction Errors 2000-01-0258

Various methods are available to predict future cylinder air charge for improved air/fuel control. However, there can never be perfect prediction. This paper presents an algorithm to correct for imperfect cylinder charge prediction. This is done by expanding the air/fuel control boundary to include the catalyst, and correcting prediction errors as soon as possible using small corrective changes to later cylinder fuel inputs. The method was experimentally tested and showed improved air/fuel control as indicated by reduced variability of catalyst downstream air/fuel ratio. Additional vehicle testing showed potential to further reduce emissions.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Modeling of Automotive Aftertreatment Catalysts

1999-01-3043

View Details

TECHNICAL PAPER

A New Catalyzed Hydrocarbon Trap Control System for ULEV/SULEV Standard

2003-01-0567

View Details

TECHNICAL PAPER

A 3WCC Global Kinetic Model: A Calibration Method Using Laboratory Scale and Engine Test Bench Experiments

2008-01-0453

View Details

X