Influence of the quality of fuel atomization on the emission of exhaust gases toxic components of combustion engines

Abstract

The paper contains analysis of the impact on the quality of the fuel spray of droplets on the number and the value of the surface area of the droplets that have a direct impact on the efficiency of the combustion process. It presents a change in the level of toxic exhaust emissions with an increase in the so-called. Sauter Mean Diameter (SMD) of fuel droplets. The presented figures show that the increase in the average droplet diameter SMD in particular causes an increase of toxic exhaust gases emissions, i.e. mainly nitrogen oxides NO, carbon monoxide CO, hydrocarbons HC and Particulate Matter (PM). This tendency is not constant, because it is changing according to changes of the coefficient of equivalence Φ. For example, emissions of nitrogen oxides for the lean mixtures (Φ <1), with an increase in average droplet diameter increases, while now for the rich mixtures (Φ> 1), this trend is significantly changed, i.e. the level of this emission decreases.

Laser Research of the Fuel Atomization Process of Internal Combustion Engines

“…The most harmful droplets of fuel in the spray are large droplets. Even a few such droplets significantly change the combustion process and emission of toxic exhaust components, mainly (NO x ) [9][10][11]. The atomization process from the point of view of combustion and ignition processes, as well as emission levels, is characterized by the best substitute diameter D 43 , which value is close to the median volume.…”

“…10 , D 20 , D 30 , D 32 , D 43 . The differences in the dimensions of individual droplet diameters are a measure of the uniformity of dimensions of the fuel stream.…”

Research the Possibility of Obtaining Diagnostic Information about the Ships Engine Fuel Injection System Condition based on the Analysis of Characteristics of Heat Release

“…The increase of these costs may affect the current technical condition of the ship's engine. Decline in its efficiency will cause an increase in fuel consumption [2,3,6,8].…”