سنجش ميزان آلاينده هاي خروجي از اگزوز خودروهاي پژو 206 ، سمند معمولي و سمند تاكسي در شهر مشهد

Measuring Vehicle Exhaust Emissions from Peugeot 206, Samand and EL Samand in Mashhad

زمينه و هدف: كنترل گازهاي خروجي خودروها با توجه به نرخ بالاي توليد خودرو در ايران و انتشار گازهاي سمي توسط آن ها از اهميت خاصي برخوردار است. در اين مطالعه، ميزان آلاينده هاي خروجي (مونوكسيد كربن، دي اكسيد كربن و هيدروكربن هاي نسوخته) از اگزوز خودروهاي پژو206، سمند معمولي و سمند تاكسي در شهر مشهد در فاصله سال هاي ساخت 1387-1383 مورد بررسي قرار گرفت. روش بررسي: داده هاي اوليه از مراكز معاينه فني خودرو گردآوري شده و توسط نرم افزار Excel و آزمون چند دامنه اي دانكن در سطح اطمينان 5 درصد ( 0/05

Background and Objective: The control of gaseous emissions of vehicles is very important issue due to high rates of car production in Iran and their toxic emissions. In this study, in order to introduce a superior car compatible with environmental standards, the emissions of hydrocarbons, carbon monoxide and carbon dioxide by Peugeot 206, Samand and EL Samand during 2004-2008 were examined. Method: Preliminary data was collected from Vehicle Inspection Centers and statistical analysis of the experimental data. Moreover, the mean data comparison was carried out using Excel software and Duncan’s Multiple Range Test at a 5% (p < 0.05) alpha level. Results: The results showed that Samand and EL Samand significantly produce more hydrocarbon and carbon monoxide pollutants compared to Peugeot 206, while Peugeot 206 provides a greater amount of carbon dioxide. This could be attributed to the different mechanisms of combustion (complete or incomplete) in the vehicles. Moreover, the downward trend in emissions of hydrocarbons and carbon monoxide was observed during 2004-2008 by Peugeot 206 unlike carbon dioxide. Although, the amount of pollutants produced by Samand and EL Samand was declined. Conclusion: Therefore, Peugeot 206 is more appropriate vehicle in terms of environmental standards as compared to Samand and EL Samand cars. Furthermore, Samand in competition with EL Samand produces more pollutants. It is hoped that by systematic survey of the vehicles performance and improvement their quality the gray dust can be wipe out from sky.