Browse Publications Technical Papers 2002-01-0374
2002-03-04

Mean Value Models for Exhaust System Temperatures 2002-01-0374

Exhaust temperatures are important for turbine and catalyst performance. A set of exhaust temperature models suitable for turbo matching as well as design and analysis of engine control systems are developed and investigated. The models are lumped parameter heat transfer models, that fall within the category of mean value engine models.
The model is developed for describing exit temperatures from the exhaust manifold and temperature drops in pipe sections in the exhaust system. The components used to model the exhaust temperature are: engine out temperature, temperature drop in a straight pipe, and a set of heat transfer modes. The model is validated using data from three different engines. It is shown that, for a spark ignited engine operating at MBT and stoichiometric conditions, it is sufficient to model the engine out temperature as a linear function of mass flow. Recommendations for tuning the model are also given.
A thorough survey of exhaust heat transfer literature is also made together with a comparative summary of the different heat transfer modes that are present in the exhaust.

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

A One-Dimensional Model for Heat Transfer in Engine Exhaust Systems

2005-01-0696

View Details

TECHNICAL PAPER

Exhaust Manifold Temperature Observer Model

2014-01-1155

View Details

TECHNICAL PAPER

A Numerical Contribution to the Improvement of Individual Cylinder AFR Control in a 4 Cylinder S.I. Engine

2001-01-1009

View Details

X