Investigating the Effect of Using of Different Alcohols as Gasoline Additives on an Engine Emitted Pollutants

Fossil fuels are the most commonly used fuels in the world, causing various types of environmental pollution due to the increase in energy consumption; the demand for renewable energy such as biofuels has increased. The aim of this study was to evaluate the performance and pollution of a four-cylinder gasoline engine with biofuels of ethanol, propanol butanol and pentanol at three different speeds of ۱۰۰۰, ۱۵۰۰ and ۲۰۰۰ rpm.  The results of the tests showed that adding alcoholic fuels to gasoline increases engine power. Improves engine torque. Brake specific fuel consumption of the engine with proposed fuels increases compared to pure gasoline, but this trend decreases with increasing the speed from ۱۰۰۰ to ۲۰۰۰ rpm. In terms of pollutant emissions, the amount of NOX pollutant increased with increasing engine speed in fuel combinations, but this pollutant had a lower amount compared to pure gasoline fuel. The emission of HC pollutant decreases by increasing the percentage of pentanol in fuel compounds. In addition, the amount of CO pollutant decreases greatly with the increase of engine speed from ۱۰۰۰ to ۱۵۰۰rpm and the engine speed increases from ۱۵۰۰ to ۲۰۰۰rpm. In addition, with the increase in the volume percentage of pentanol in the fuel compounds, the amount of CO increased.

کلیدواژه ها:

Renewable energy ، environmental pollution ، engine performance ، Bio alcohols