ADAPTATION OF SMALL SPARK IGNITION ENGINE TO ALCOHOL FUELS

作者：Pechout Martin^*; Trnka Miroslav; Novotny Martin; Vojtisek Michal

来源：Listy Cukrovarnicke a Reparske, 2014, 130(7-8): 262-267.

• gasoline engine
• combustion
• carburetor
• alcohols
• n-buthanol
• ethanol

Most of the effort to decrease dependency on fossil fuels is taking place in vehicular applications. There are relatively few studies aimed to investigate possibilities and results of usage of alternative, mainly alcohol-based, fuels in small engines used for propulsion of small garden machinery. The aim of this paper is to investigate the effects of alcohol fuels, n-buthanol and E85, on the operation of small spark ignition engine without any modification and with simple carburetor modification. The test results of an unmodified engine show a remarkable mixture enleanment with increasing alcohol share accompanied by decrease in maximum torque, limitation of stable engine regimes, increased nitrogen oxides production and lowered production of carbon monoxide and hydrocarbons. Simple carburetor modification suppressed all the above mentioned negative impacts and thus allowed combustion of selected alcohol fuels.

• 出版日期2014-8