Abstract
This paper presents aspects regarding the physico-chemical properties of some alternative fuels used for automotive applications. Fossil fuel resources are non-renewable and are mainly responsible for the increasing human related greenhouse gas emissions and consequently for global climate change. This is an incentive for the research and development of modern, efficient and sustainable technologies to produce alternative fuels. Especially in the transport sector, renewable energy resources and technologies are a feasible solution to maintain reliability, and availability for a longer period. Several engines were tested with different alternative fuels and the results regarding the pollution level and properties of the fuels are presented.
Keywords: alternative fuels, biofuels, physico-chemical properties