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Impact of the use of comfort devices on the exhaust emission from a hybrid vehicle

ehicles are equipped with more and more devices to improve the comfort of traveling. These include, among others heated and ventilated seats, heated and adjustable rear-view mirrors, audio equipment and a heated rear window. They are usually powered by electricity generated by the engine, which translates into an increase in its loads and, as a consequence, fuel consumption and emission. However, there is no information about the possible increase in the amount of other harmful components contained in the exhaust gases. Such data are not presented to the user, since the only measurement of fuel consumption is based on the homologation cycle (currently WLTC- World Harmonized Transient Cycle), where the vehicle is tested on a chassis dynamometer under strictly defined conditions, where most comfort systems are not used. Often this result is inadequate to that obtained during the operation of the vehicle, where the obtained fuel consumption is higher. As part of this article, tests were carried out in real hybrid vehicle traffic conditions on the same test route using an analyzer from the PEMS (Portable Emission Measurement System) ¬ SEMTECH DS group. Sensors Inc. The analysis of gaseous components of exhaust gases together with the exhaust mass flow probe and the GPS system made it possible to calculate the pollutant emission. The emission of hydrocarbons, carbon monoxide, carbon dioxide and nitrogen oxides was studied. On this basis, the actual mileage fuel consumption of the tested vehicle was calculated using the road emission of carbon-containing compounds (carbon balance method). The results obtained were combined and analyzed.
Topic: Emission measurements and aftertreatment
Author: Maciej Siedlecki
Co-authors: Jerzy Merkisz, Kamil Kubiak, Michał Dobrzyński, Łukasz Rymaniak