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Real World Duty Cycle Development Method for Non-road Mobile Machinery (NRMM)
ISSN: 1946-391X, e-ISSN: 1946-3928
Published September 27, 2016 by SAE International in United States
Citation: Yuan, Q., "Real World Duty Cycle Development Method for Non-road Mobile Machinery (NRMM)," SAE Int. J. Commer. Veh. 9(2):306-312, 2016, https://doi.org/10.4271/2016-01-8118.
Emission, fuel economy and productivity in non-road mobile machinery (NRMM) depend largely on drive cycles. Understanding drive cycles can provide the in-depth information and knowledge that help the system integrator better optimize the vehicle management system. Some non-road engine test cycles already exist nowadays. However, these cycles are mainly for engine emission regulation purpose, and not closely tied to real world applications. Therefore, from both industries and academia, it has been the common practice to instrument and retrofit a vehicle, assign a professional driver operate the retrofitted vehicle for real testing, and compare the results to the baseline vehicle under the similar operating conditions. Obviously this approach is time consuming and resource intensive. In this paper, we attempt to address this issue by introducing a method of constructing standard drive cycles from in-field operation data. The constructed drive cycle will affect design, analysis, optimization and testing of NRMM. Moreover, the standardization of such drive cycles will ease measurement of performance metrics across the industry.
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