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Emissions, Performance, and Duty Cycle Measurements of Diesel Powered TRUs
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 16, 2007 by SAE International in United States
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In recent years emission control agencies have turned their attention to to the cleanup of diesel engines, both mobile and stationary. This paper is one of the first attempts to characterize the load and emissions of a subsection of stationary diesel emissions, specifically Truck/Trailer Refrigeration Units (TRUs). These devices are used to keep refrigerated or frozen cargo cold when it is being shipped/delivered. Two general sizes of TRUs were tested, smaller TRUs for cooling box trucks, used for local deliveries, and large TRUs, used for long hauling and very large deliveries. After observing a matrix of these units over a large spectrum of temperatures it was found that, although there were multiple control strategies, they all heavily relied on pulling the trailer down to the set point temperature as fast as the engine and refrigeration unit would allow.
Emissions tests were taken in the field at the General Produce Warehouse in Sacramento over a large range of temperatures using this control strategy. It was found that after testing the amount of O2, CO, CO2, and NOx in the exhaust system, the major pollution present in large amounts was NOx (PM was not measured.). Engine power was found by doing a carbon balance with CO2 and comparing the results with a well documented diesel engine. Using the NOx measurements in grams of pollution per hour, as well as per unit energy output from the engine, then the cooling from the trailer was found as a function of energy used.
- P. Mader - Mechanical and Aeronautical Engineering University of California at Davis
- C. Kulkarni - Mechanical and Aeronautical Engineering University of California at Davis
- H. A. Dwyer - Mechanical and Aeronautical Engineering University of California at Davis
- C. J. Brodrick - Institute of Transportation Studies University of California at Davis
CitationMader, P., Kulkarni, C., Dwyer, H., and Brodrick, C., "Emissions, Performance, and Duty Cycle Measurements of Diesel Powered TRUs," SAE Technical Paper 2007-01-1087, 2007, https://doi.org/10.4271/2007-01-1087.
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- CHRW 2002 Temperature Controlled Logistics Report: Shipper and Carrier Perspectives C.H. Robinson Worldwide, Inc and Iowa State University.
- DOE 2001 21 st Century Truck Roadmap
- U.S. Department of Commerce 2001 “Truck Trailers: A Summary.” August
- VIUS 2000 Vehicle Inventory and Use Survey U.S. Census Bureau, U.S. Department of Commerce
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