Study of the effect of the Dienitro additive on the NO_xand CO emissions in buses of collective transport to Diesel S-50 EGR and S-10 with SCR and EGR systems

Abstract

Purpose Transport of people and goods has always been associated with the generation of some form of pollution, whether atmospheric, sound or visual. Managing the urban environment presents a major challenge: preserving environmental resources and also ensuring decent living conditions for the current population and for future generations. In the era of motorized and carbonized transport, vehicles are the main source of emission of atmospheric pollutants, mainly in large urban centers and important precursors of ozone. An important advance in minimizing vehicle emissions was the introduction of cleaner and additive fuels into the Brazilian market. The purpose of this paper is to study the effect of the Dienitro additive on the NOx and CO emissions in buses of collective transport, Diesel S-50 exhaust gas recirculation (EGR) and S-10 with selective catalytic reduction (SCR) and EGR systems. Measurements of CO and NOx gas emissions were carried out using a gas analyzer in S50 and S10 diesel buses with an EGR and SCR systems from a company operating in the collective transport of Biguaçu. Design/methodology/approach In this study, 20 measurements were performed without additives and 20 measurements with additivation in each bus, making it possible to calculate the average emission rate of CO and NOx, pollutant gases with toxic effect. Findings The usage of Dienitro additive in diesel engines resulted in a significant reduction in the emission of polluting gases, carbon monoxide (CO) and nitrogen oxide (NOx), thus being efficient in reducing the emissions of these gases. Originality/value The Dienitro additive was first tested on diesel engines by public transport buses, and there is great potential for reducing the emission of toxic gases.

Simulation of the effect of EGR rates on combustion and emission of a diesel engine

“…Compared with gasoline engine, diesel engine has some certain advantages in reducing fuel consumption, carbon dioxide and unburned hydrocarbon emissions due to its relatively high combustion efficiency, the main challenge of diesel engine is its higher nitrogen oxide (NOx) and Soot emission [1,2]. As the emission regulations become more and more stricter, the development of diesel engine technology is increasingly close to the bottleneck of today's existing technology, and it is more and more difficult to reduce emissions.…”