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Aberdeen Test Center 1
U.S. Army Aberdeen Test Center Support of Heavy Duty Diesel Engine
Emissions TestingMr. Jason A. Jack
Military Environmental Technology Demonstration Center
U.S. Army Aberdeen Test Center
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Aberdeen Test Center 2
Background
• Program developed in 1998 in response to consent decree settlement
• EPA has utilized ATC as independent test agency since 2001
• Program tests heavy duty diesel engines with EPA Real time On road Vehicle Emissions Reporter (ROVER)
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Aberdeen Test Center 3
ROVER System
• Comprised of various off the shelf items including two emissions analyzers, a GPS system, and an engine control module scanner
• Also includes a calibrated flow pipe
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Aberdeen Test Center 4
ROVER System
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Aberdeen Test Center 5
In-Use Testing
• ROVER developed to test engines while performing their intended duty cycle
• Currently program participants volunteer engine for testing purposes
• ROVER program participants include state and local governments throughout the United States, private industry, and newer model engines from rental companies
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Aberdeen Test Center 6
In-use Testing
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Aberdeen Test Center 7
Various Types of Testing
• Variables • Marathon • Non-road • New technology comparison
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Aberdeen Test Center 8
Variables Testing
• Engine families are tested under various conditions with the widest range of operational parameters
• Variables include hot and cold temperatures, driver variation, and altitude
• When possible, the same engines in the same vehicles are tested under different conditions
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Aberdeen Test Center 9
Variables Testing
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Aberdeen Test Center 10
Variables Testing
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Aberdeen Test Center 11
Non-road Testing
• Early tests were conducted on various types of non-road equipment including forklifts, dozers, loaders, tractors, etc
• Currently, a method is used to test tractors only
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Aberdeen Test Center 12
Non-road Testing
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Aberdeen Test Center 13
Marathon Testing
• Effort to test an engine under the most varied conditions possible during a short period of time
• Involve renting a test item and operating the vehicle from Maryland to points west into higher altitudes
• Normal marathon test will be conducted from ATC to Colorado via Interstate – 70
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Aberdeen Test Center 14
Marathon Testing
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Aberdeen Test Center 15
Comparison Testing
• Includes testing engines with ROVER and various available in-use emissions testing technologies
• Analyze applicability of available technologies in the emissions compliance program and real-time emissions capabilities of each system
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Aberdeen Test Center 16
Comparison Testing
• Performed testing in support of EPA SmartWay to study emissions and fuel economy results with applications of various technologies on tractors and trailers
• Conducted testing in support of the American Bus Association (ABA) to study bus engine idle emissions
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Aberdeen Test Center 17
Procurement of Test Items
• Procure test items from a variety of sources • Includes federal, state, and local
governments, private industry, and rental companies
• ATC and EPA determine the specific engines to be tested in above referenced scenarios
• Each year ATC attempts to locate the newest model year engine families for testing
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Aberdeen Test Center 18
Typical ROVER Test
• Most testing of rented vehicles is conducted locally on public roads around ATC
• ATC ROVER test team travels to various program participants to perform testing daily
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Aberdeen Test Center 19
Data Analysis
• ATC also performs preliminary data analysis • ATC personnel analyze the data with respect
to NTE NOx in grams per brake horsepower hour over various periods within each test
• A quick pass/fail analysis is usually done before data is submitted to EPA assuring its quality and validity
• ATC provides a fleet report with various types of analysis of NTE NOx, fuel economy, and engine data for each engine tested for various participants requesting data
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Aberdeen Test Center 20
ATC Reporting
• Transfer analyzed data to EPA at the completion of each test
• Report progress on procurement, scheduling, testing, and data analysis monthly to EPA
• Interact daily with EPA personnel to further support data analysis and ensure program achieves its goals with respect to variety and number of engine families, number of tests, and cost
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Aberdeen Test Center 21
Other ATC Reporting
• EPA SmartWay testing• ABA idle testing
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Aberdeen Test Center 22
Other ATC ROVER Testing
• EPA allows ATC to use ROVER in DoD programs for emissions measurements
• ESTCP NFESC biodiesel emissions program• ESTCP NFESC diesel engine emissions
reduction technologies program
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Aberdeen Test Center 23
ATC Testing and Capabilities
• Tracks that simulate various road conditions used primarily for DoD vehicle testing
• The world’s largest Roadway Simulator capable of testing up to 80,000 lb tractor trailers while simulating various driving scenarios
• In the process of constructing a high speed test track that will allow vehicles to maintain speeds of 70 mph over a 4.5 mile tri oval track with paved and gravel traffic lanes
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Aberdeen Test Center 24
THANK YOU!
Jason A. JackU.S. Army Aberdeen Test Center(410) 278 [email protected]