Influências dos modos de operação nas emissões de poluentes provenientes de veículos flex em região urbana
DOI:
https://doi.org/10.14295/transportes.v25i2.1304Keywords:
Emissions, Flex-fuel vehicle, Operating mode, Driving cycle.Abstract
This work proposes to verify the influence of operating modes on pollutants emissions of flex - fuel vehicles. For this, a real driving cycle was developed for the flex light vehicle in an urban street of the Fortaleza city. For data collection was used a method of instant collection of kinematic parameters from engine, road and vehicle emissions. Due to the local characteristics of the traffic, a greater representatively of the idle operating modes was observed. In general, there was a greater influence of the acceleration mode on pollutant emissions and fuel consumption. The highest average CO2 emission rate was observed during acceleration mode (6.38 mg/s), followed by the idle mode (4.70 mg/s). For the CO pollutant, the highest average emission rate was also observed during the acceleration mode (55.60 μg/s), followed by the idle mode (35.01 μg/s). For the NOx pollutant, higher emission rates were observed in the acceleration mode, 5.08 μg/km and 1.98 μg/km for the idle mode. The average fuel consumption in the acceleration mode was 6.61 L/100 km during the tests, followed by idle and deceleration modes, with 4.84 and 3.39 L/100 km, respectively.Downloads
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