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Development of the Texas Drayage Truck Cycle and Its Use to Determine the Effects of Low Rolling Resistance Tires on the NO X Emissions and Fuel Economy
Technical Paper
2009-01-0943
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Trucks operating in inter-modal (drayage) operation in and around port and rail terminals, are responsible for a large proportion of the emissions of NOX, which are problematic for the air quality of the Houston and Dallas/Ft. Worth metro areas. A standard test cycle, called the Texas Dray Truck Cycle, was developed to represent the operation of heavy-duty diesel trucks in dray operations. The test cycle reflects the substantial time spent at idle (~45%) and the high intensity of the on-road portions. This test cycle was then used in the SAE J1321 test protocol to evaluate the effect on fuel consumption and NOX emissions of retrofitting dray trucks with light-weight, low-rolling resistance wide-single tires.
In on-track testing, a reduction in fuel consumption of 8.7% was seen, and NOX emissions were reduced by 3.8% with the wide single tires compared to the conventional tires. Without considering the test-cycle idle periods, the reductions were 9.3% and 7.4% for fuel consumption and NOX emissions, respectively.
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Citation
Diller, T., Matthews, R., Hall, M., DeFries, T. et al., "Development of the Texas Drayage Truck Cycle and Its Use to Determine the Effects of Low Rolling Resistance Tires on the NOX Emissions and Fuel Economy," SAE Technical Paper 2009-01-0943, 2009, https://doi.org/10.4271/2009-01-0943.Also In
References
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