regarding to the escalating trend of environmental pollutions, especially air pollution in great city of tehran, the perspective and study of the conditions for supply and consumption trends of fuels, with specific to fossil fuels, can lead to formation of significant figures and data. on the other hand, recognition, and if possible, reformation of environmental management schemes in the supply...

P ERSONAL transportation offers people freedom, but this choice of freedom creates a conflict with growing environmental concerns and the sustainability of humanity's use of natural resources. Hybrid electric vehicles (HEVs) improve fuel efficiency by optimizing powertrain operation and recovering kinetic energy during braking, hence reducing liquid fuel consumption in the transportation sector...

The future of U.S. transport energy requirements and emissions is uncertain. Transport policy research has explored a number of scenarios to better understand the future characteristics of U.S. light-duty vehicles. Deterministic scenario analysis is, however, unable to identify the impact of uncertainty on the future U.S. vehicle fleet emissions and energy use. Variables determining the future ...

NOTICE This Technical Report does not necessarily represent final EPA decisions or positions. It is intended to present technical analysis of issues using data that are currently available. The purpose in the release of such reports is to facilitate an exchange of technical information and to inform the public of technical developments. Executive Summary This study proposes a modeling methodolo...

The future of US transport energy requirements and emissions is uncertain. Transport policy research has explored a number of scenarios to better understand the future characteristics of US light-duty vehicles. Deterministic scenario analysis is, however, unable to identify the impact of uncertainty on the future US vehicle fleet emissions and energy use. Variables determining the future fleet ...

The invention of the spark-ignited internal combustion engine provided a market for a petroleum middle distillate, gasoline, about 100 years ago. The internal combustion engine and gasoline have co-evolved until motor vehicles now annually consume about 110 billion gallons of gasoline in the United States. Continuing air pollution problems and resulting regulatory pressures are driving the need...

This paper proposes a method of distinguishing between the effect of anticipated and unanticipated changes in oil prices and oil inventories on the US gasoline prices. I show that gasoline price adjustments are faster and stronger for anticipated changes in oil prices and inventory levels than for unanticipated changes. The dynamics of the gasoline price response depends on the relative importa...