Preliminary communication

Analysis of the vehicle exhaust system corrosion and its effect on the ECO-test result

T. Šolić ; Mechanical Engineerring Faculty in Slavonski Brod, University of Slavonski Brod, Croatia
D. Marić ; Mechanical Engineerring Faculty in Slavonski Brod, University of Slavonski Brod, Croatia
S. Suhi ; Center for Vehicles of Croatia JSC, Donji Miholjac, Croatia
I. Samardžić ; Mechanical Engineerring Faculty in Slavonski Brod, University of Slavonski Brod, Croatia

Abstract

This paper deals with analysis of the vehicle exhaust system quality and its influence on the results of measuring exhaust emissions of the Otto and Diesel motor vehicles. Results of eco-tests obtained from correct and faulty vehicle exhaust systems were compared to conclude that damages caused by corrosion had significant influence on the pass rate of vehicles at eco-test. Referring to vehicles with the Otto engine, damages in the exhaust system increase the oxygen level, which results in the increased λ factor and in failure at the eco-test. On the contrary, vehicles with the damaged Diesel engine exhaust system allow the gas to leak through the damage, so the measurement of blackening is lower, i.e. the eco-test result is better than that of the exhaust system without damage.

Keywords

vehicle; exhaust system; corrosion; eco-test; technical inspection

Hrčak ID:

274058

URI

https://hrcak.srce.hr/274058

Publication date:

1.7.2022.

Visits: 547 *