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Fuel Economy/CO2 - USA Federal
of the requirement for the engine to operate at higher power to maintain speed while climbing a hill. Even though the engine may save fuel on a downhill section, the overall impact of a hill is, generally, to increase average fuel consumption. Secondly, Phase 2 includes changes in the evaluation of aerodynamics. To reflect the in-use aerodynamic performance of combination tractors, the wind averaged coefficient of drag is used in the GEM model in...
法规认证 2024/12/13 更新