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 »

Preview Document Add to Cart
Members save up to 16% 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

An Experimental Investigation on OBD II Techniques for Fuel Injection System Monitoring in a Common Rail Passenger Car Diesel Engine

2009-01-0240

View Details

TECHNICAL PAPER

A Production Wide-Range AFR Control Algorithm for Direct-Injection Gasoline Application

2001-01-0260

View Details

TECHNICAL PAPER

Virtual GDI Engine as a Tool for Model-Based Calibration

2012-01-1679

View Details

X