Jose A. Romero Navarrete, Frank Otremba



A Method to Assess the Gravity Response Efficiency of a Truck

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Transport activities contribute with around 14% of the total green-house gases emitted to the atmosphere as a result of human activities. Several efforts have been made to reduce such emissions through better vehicle designs and environmentally friendly operating conditions. One crucial element in this process, consists of objectively assessing the performance of the vehicles in that respect. The passive performance of the vehicle, namely the operation of the vehicle without any power input, represents an important component of such assessment, to measure the rolling, drag and mechanical losses of the vehicle. In this paper, a methodology is proposed to assess the passive performance of the vehicle, which avoids the uncertainties associated to the current standard testing methodologies. Such a method is based upon the loss of potential energy when the vehicle performs a U-turn along a long ramp. Both, comparative and parametric analyzes can be carried out with the testing facility, whether to assess the potential environmental performance benefits of different technologies, or to quantify the effects of several potentially influential parameters. In particular, the cargo condition (liquid or solid) and the container shape (elliptical, cylindrical).


Road tankers, energy efficiency, environmental assessment, gravity response, transportation energy, rolling resistance, drag resistance


Cite this paper

Jose A. Romero Navarrete, Frank Otremba. (2020) A Method to Assess the Gravity Response Efficiency of a Truck. International Journal of Environmental Science, 5, 213-219


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