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News from Analytical Engineering, Inc.
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AEI Newsletter - February 2008
Exhaust Aftertreatment and Altitude/Cold calibration development are two areas of significant focus at Analytical Engineering, Inc. (AEI) in 2008. AEI has ongoing laboratory and test cell research programs to help our customers develop new catalyst formulations and control strategies to cost effectively meet emissions requirements and maintain reliability. The motoring dynamometer and cold ambient conditions in the AEI SuperCell provide a controlled and repeatable testing environment for cold weather/high altitude calibration development. Cold Motoring Friction tests provide the information needed for fueling requirements to overcome engine friction and develop an engine calibration providing excellent driveability through all temperature ranges. Two example overviews of these programs are included below. Please call AEI directly or send an email to news@aei-tech.com if you are interested in conducting similar work.
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COLD MOTORING FRICTION TESTS IN AEI SUPER CELL
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AEI has helped several customers develop engine control strategies and calibration maps for cold operation. The AEI supercell provides the ability to cool the engine and fluids to temperatures as low as -40 deg. C. The motoring dyno then can rotate the engine at different speeds while using an inline torque flange to measure the torque required to overcome the engine friction at a given speed. This data is compiled to create appropriate engine fueling maps for good driveability and torque transparency to the vehicle driver. This test cell may also be utilized to conduct motoring tear down tests, such that the friction attributed to various engine components may be measured.
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AEI recently demonstrated 75% NOx reduction in diesel exhaust utilizing a catalyst with no precious metal content. AEI has been developing a cost-effective aftertreatment system with funding from a New Technology Research and Development (NTRD) grant from Texas Emissions Reduction Program (TERP) in cooperation with the Houston Advanced Research Center (HARC). A recent breakthrough resulted in several nonprecious metal catalyst formulations yielding between 65% and 75% NOx reduction in diesel exhaust, with the potential for even higher NOx reduction with future process/catalyst optimization. The chart below illustrates the NOx reduction achieved over a range of temperatures. This is an ongoing program and is expected to result in a commercial retrofit product by 2009.
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EMISSIONS REDUCTION NEW TECHNOLOGY DEVELOPMENT PROGRAM
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Read more about AEI's emission reduction program or cold motoring friction testing capabilities...
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