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Development of a Transient Duty Cycle for Large Nonroad SI Engines
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 06, 2002 by SAE International in United States
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The Environmental Protection Agency (EPA) has proposed emission standards for nonroad spark-ignition engines rated over 19 kW. Existing emission standards adopted by the California Air Resources Board require testing on a steady-state duty cycle. This paper presents the results of measurements to characterize normal operation from forklift trucks, which are the dominant application for these engines. In combination with previous measurements with a welder to represent constant-speed applications, the measured data were used to derive a composite 20-minute transient duty cycle for emission testing for all nonroad industrial spark-ignition engines.
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CitationUlmet, V., White, J., Stout, A., and Salardino, D., "Development of a Transient Duty Cycle for Large Nonroad SI Engines," SAE Technical Paper 2002-01-1716, 2002, https://doi.org/10.4271/2002-01-1716.
- October 5 2001
- Ulmet, Vlad “Evaluation of Emissions Durability of Off-Road LPG Engines Equipped with Three-Way Catalyst,” SwRI Final Report (SwRI 08.03661 & 08.03377) September 2001
- Ulmet, V. White, J.J. Stout, A. Salardino, D. “Evaluation of Durable Emission Controls for Large Nonroad SI Engines SAE Paper 2002-01-1752 April 2002
- Starr, Michael E. “Nonroad Test Cycle Development,” SwRI Final Report (SwRI 08-7633-829) September 1998