|
A diesel particulate filter (DPF) is highly effective
at removing particulate matter (PM) from the exhaust stream. Removing the collected soot (i.e., regenerating the
filter) is a more challenging problem, and for this reason a large number of diesel engines are not compatible
with currently ARB-verified DPFs. This includes many older engines found in school buses.
The objective of Cleaire's Inovative Clean Air Technology (ICAT) project with the Air Resources Board was to develop
and demonstrate a product that decouples the regeneration from the engine's operating conditions through off-line
electrical heating of the DPF. The ICAT project's goals were to optimize the hardware, control systems, and operational
procedures to create a robust and fail safe PM control system that can be used in widespread duty cycles and on
older engines.
The Horizon EPF and regenerative infrastructure performed as designed during the ICAT project and field demonstration.
The chassis dynamometer testing validated the Level 3 emission reduction goal for the EPF (greater than 85% PM
removal efficiency). Furthermore, the testing found that the Horizon EPF reduced the NO2 emissions, thus providing
an additional air quality benefit. Cleaire successfully met the objectives of the ICAT project and is now commercializing
the Horizon EPF product. |
| |
|
|
Brad Edgar, Ph.D., currently serves as the Executive Vice-President and Chief Technology Officer of Cleaire.
In this role he leads the company's technical and marketing efforts in the area of diesel engine emission control.
Brad spearheaded the development of Longview®, Horizon-S™, Horizon-M™, and the Filter Cleaning System that
meet the highest standards of the California Air Resources Board (CARB). Additionally, he was one of the chief
architects of Cleaire's marketing and product plan. As a result of his efforts, more than 2,500 Cleaire systems
have been sold and installed to reduce diesel emissions.
Brad has spent his entire career working with clean diesel technologies. He previously held the position of Chief
Technology Officer at Ceryx Incorporated, and was the Technical Director of Thermatrix Diesel Systems. Over the
course of his career, Brad has invented or co-invented nine United States patents.
Brad earned a Bachelors of Science and Ph.D. in Mechanical Engineering from the University of California at Berkeley.
As an undergraduate, Brad was a four-year letter winner for the football team and earned the 1989 team award for
most valuable special teams play. Brad and his wife, Ankie, live in Oakland, California with their two children,
Jackson and Rosi.
Michael Streichsbier, Ph.D.,
is currently a Senior Engineer
and Project Manager at Cleaire. Dr. Streichsbier received his B.S., M.S, and Ph.D. degrees in Mechanical Engineering
at the University of California, Berkeley. He has spent his career working on state-of-the-art emission control
technologies. Michael is the product manager for the Horizon EPF and he managed the testing for the ICAT project.
Tom Swensen received his B.S. in Mechanical Engineering from the California
State University, Sacramento and is a registered mechanical engineer in the State of California. Tom has extensive
experience in the development and implementation of technology-based air quality improvement strategies related
to internal combustion engines.
Tom joined Cleaire in August 2003 after 10 years of developing and implementing nationally recognized market-based
vehicle and equipment emission reduction incentive programs for the Sacramento Metropolitan Air Quality Management
District. Prior experience also includes work with a national consulting firm and the California Energy Commission. |
| |
|
|
|
For more information on this
Seminar please contact Jorn Herner, Ph.D., at (916) 324-9299 or send email to: jherner@arb.ca.gov
|
| |
|
|
|
For a complete listing of
the ARB Chairman's Series and the related documentation for each one of the series please check this page
|
|
