Development of Automatic Trap Oxidizer Muffler Systems

Barris, Marty A.; Rocklitz, Gary J.

doi:10.4271/890400

Cited by 13 publications

(4 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly, regeneration system performance is often evalu-*Corresponding author: Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, Loughborough, Leicestershire, LE11 3TU, UK. email: a.m.williams@ lboro.ac.uk ated by weighing a PM-loaded DPF before and after a regeneration event [15][16][17] with similar levels of accuracy required.…”

Section: Introductionmentioning

confidence: 99%

Correcting mass measurement of diesel particulate filters at non-ambient temperatures

Williams

Garner

2009

Proceedings of the Institution of Mechanical Engineers, Part D:

View full text Add to dashboard Cite

• This is an article from the journal, Proceedings of the In- Abstract: Diesel particulate filters (DPFs) are becoming a widespread method for reducing the particulate matter (PM) emissions from both on-highway and off-highway automotive diesel engines. Mass measurements of DPFs are commonly used to determine rapidly both the amount of PM trapped by the filter and the amount regenerated (removed) by regeneration systems. To avoid issues with adsorption of atmospheric water the filters are often weighed at elevated temperatures. It is shown in this work that at elevated temperatures the filters weigh less than at lower temperatures as a direct result of the buoyant hot air within the filter substrate. This study shows that consideration of the buoyancy forces allows for correction of the mass measurement for the errors relating to the non-ambient temperature of the filter, allowing mass measurements at elevated temperatures while avoiding adsorption of atmospheric water on to the filter substrate and, therefore, improving the accuracy of mass-measurement-based studies of filtration and regeneration performance of DPFs. It is demonstrated that a filter with approximately 85 per cent overall porosity weighed at 150 uC in ambient temperatures will have an error of about 0.3 g/l (typically about 10 per cent of the trapped PM mass) in the mass measurement when not correcting for the temperature. By way of an example, this is shown to have potentially an important effect on the calculated trapped PM.

show abstract

Section: Introductionmentioning

confidence: 99%

Correcting mass measurement of diesel particulate filters at non-ambient temperatures

Williams

Garner

2009

Proceedings of the Institution of Mechanical Engineers, Part D:

View full text Add to dashboard Cite

show abstract

“…Clogging can be a problem with surface collection filters, and backpressure levels can become high enough to stall an engine (Kiyota et al 1986). Many researchers have chosen the wall-flow monolith for the filtration medium due to its high filtration area-to-volume ratio, high collection efficiency, and packed-bed filtration characteristic which requires only one end of the filter to be heated to soot ignition temperatures before a sustained burning occurs (Barris and Rocklitz, 1989). Some researchers have preferred ceramic foam filters to wall-flow filters because ceramic foam filters can be manufactured in a variety of shapes and feature a "deep bed" type of filtration collection which allows the external energy source for regeneration to be focused in the area of greatest soot deposition.…”

Section: Filtration Mediamentioning

confidence: 99%

“…Since smaller initial soot loadings resulted in incomplete regeneration, a narrow range soot loading prior to regeneration was required for controlled and complete regeneration. Barris and Rocklitz (1989) performed an electrical heating regeneration study utilizing modeling techniques to predict flow characteristics, temperature distributions, and thermal stresses within the filter element. An electrically heated bypass regeneration system was developed using a cordierite wall-flow monolith as the filtration medium.…”

Section: Electrical Heating Systemsmentioning

confidence: 99%

See 1 more Smart Citation

Design and development of a microwave-enhanced diesel soot oxidation system

Rankin¹

View full text Add to dashboard Cite

vi also need to thank Linda Cox for giving me a thorough explanation of the graduation requirements. I would like to thank Dan Carder, Ryan Barnett, and Wesley Riddle for helping with the testing during the last two hectic months of testing. I would like to thank Cliff Judy for all his help in the shop. He conveyed a wealth of practical information to me over the years, and he always allowed me to use his equipment when necessary. I would like to express my gratitude to Marylin ("Mom") Host and Gene Kopasko for their help with all my purchasing problems and blunders, and for having such great senses of humor. Marylin and Gene, if there are still receipts missing for any of my purchases, they are in the mail. I would also like to thank Richard Atkison for providing help with the automated valve control and wiring. Finally, I would like to express my appreciation to Dr. Al Hoffmanner and Eric Tekrul of Walker, Inc. for providing the stuffing cone and initial trap assembly. vii

show abstract

Durability Studies of Trap Oxidizer Systems

Barris¹

1990

SAE Technical Paper Series

View full text Add to dashboard Cite

Development of Automatic Trap Oxidizer Muffler Systems

Cited by 13 publications

References 13 publications

Correcting mass measurement of diesel particulate filters at non-ambient temperatures

Correcting mass measurement of diesel particulate filters at non-ambient temperatures

Design and development of a microwave-enhanced diesel soot oxidation system

Durability Studies of Trap Oxidizer Systems

Contact Info

Product

Resources

About