Discussions of alternative fuel and propulsion technologies for transportation often overlook the infrastructure required to make these options practical and cost-effective. We estimate ethanol production facility locations and use a linear optimization model to consider the economic costs of distributing various ethanol fuel blends to all metropolitan areas in the United States. Fuel options i...

g – standard gravitational acceleration, m/s μ gravitational constant, km/s mdry – spacecraft mass without fuel, kg mwet – spacecraft mass with total fuel, kg mhighF – high-thrust system fuel mass, kg mHSTF – hybrid system fuel mass, kg m02 – spacecraft mass after phase 1 of the transfer, kg ∆Vhigh – high-thrust only system ∆V, m/s ∆VH – high-thrust portion of hybrid system ∆V, m/s ∆VL – low-th...

In this paper, the dynamic model of a fuel processor for hydrogen production from steam reformation is first introduced. The fuel processor is built according to an integrated burner and reformer bi-catalyst plate configuration. The model is then coupled with the one of a PEM fuel cell, and the overall simulator is used to analyze different control configurations. It is shown that the limited d...

The road topography in highways affects the powertrain control of a heavy truck substantially since the engine power is low in relation to the vehicle weight. In large road gradients constant speed is not possible to keep, which would have been beneficial otherwise, and in some uphills shifting gears becomes inevitable. If information about the road ahead, i.e. look ahead information, is availa...

Different g-C3N4 composite systems (coke carbon/g-C3N4, Bi/Bi2WO6/g-C3N4 and Bi/Bi2MoO6/g-C3N4) have been assessed as photocatalysts for wastewater pollutants removal. The coke carbon/g-C3N4 hybrid, produced by thermal treatment at 550 °C of a composite made from melamine cyanurate and coke, only showed activity under UV-light irradiation. On the other hand, inorganic Bi spheres/Bi mixed oxides...

In this paper, a kind of on-board liquid hydrogen (LH2) cold energy utilization system for heavy-duty fuel cell hybrid truck is proposed. Through system, the LH2 used cooling inlet air compressor and coolant accessories sequentially, to reduce parasitic power, including compressor, water pump, radiator fan power. To estimate ratio power saving capabilities model based on AMESim software was est...

The power to mass ratio of a heavy truck causes even moderate slopes to have a significant influence on the motion. The velocity will inevitable vary within an interval that is primarily determined by the ratio and the road topography. If further variations are actuated by a controller, there is a potential to lower the fuel consumption by taking the upcoming topography into account. This possi...

This research aims to reduce fuel consumption in transportation systems using vacuum insulation panels (VIPs) for cold storage trucks. The material was Insulation Panels is a custom-made insulator glass fibers pressed at 10 tons per square meter and the thermal conductivity conditions of selected materials ranged between 0.0028 0.007 W/mK has size 12 mm comparative experiment method trucks equi...

In this project we investigate the effect of heavy-duty trucks, equipped with different Adaptive Cruise Control (ACC) systems, operating in mixed traffic with manually driven passenger vehicles, on the environment and traffic flow characteristics. The sluggish dynamics of trucks whether manual or ACC that is due to their limited acceleration capabilities filters speed disturbances caused by lea...