Browse Publications Technical Papers 850012
1985-02-01

A New Approach to the Oxidizing Behavior of a Porous Ceramic Diesel Particulate Trap 850012

A model simulating the behavior of the porous ceramic trap was developed. The model is based on the assumption that the pore size of the trap combined with the particle size distribution resulting from the trap oxidising activity defines two areas of trap operation: Ci) accumulation when no pass-through is permitted, and (ii) continuous regeneration when pass-through is permitted.
The mathematical evaluation of the model demonstrates that regeneration depends on the ratio of space-time and oxidation process time constant. As far as the lower regeneration limit is concerned, temperature is the main parameter, while the upper regeneration limit is imposed by the low space-time. These dependencies have been experimentally confirmed for the couple of a light-duty Daimler-Benz engine and a Corning EX 47 trap. The test data at the regeneration limits have been correlated on the basis of the model and for continuous oxidation of particle mass flow. This resulted in a direct derivation of the physical constants of the oxidation process.

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 17% 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 Thermal Regeneration Model for Monolithic and Fibrous Diesel Particulate Traps

880007

View Details

TECHNICAL PAPER

Operation Characteristics of the Ceramic Diesel Particulate Trap during Forced Regeneration

870252

View Details

TECHNICAL PAPER

Computational Simulation of the Ceramic Trap Transient Operation

890403

View Details

X