Effect of injector nozzle parameters on fuel consumption and soot emission of two-cylinder diesel engine for vehicle
01 Apr 2022-Case Studies in Thermal Engineering-pp 101981-101981
TL;DR: In this paper , the shape of the combustion chamber of a two-cylinder diesel engine with high-pressure common rail direct injection (CRDI) system was determined by comparing the fuel economy and soot emission of diesel engines.
About: This article is published in Case Studies in Thermal Engineering.The article was published on 2022-04-01 and is currently open access. It has received 1 citations till now. The article focuses on the topics: Brake specific fuel consumption & Nozzle.
TL;DR: In this paper, the effect of cavitation on Diesel spray behavior was investigated in two bi-orifices nozzle geometries, a cylindrical nozzle and a convergent one, by means of two fundamental spray parameters: mass flux and momentum flux.
TL;DR: In this paper, the combined effect of nano additives, combustion chamber geometry and injection timing in a single cylinder diesel engine fuelled with ternary fuel (diesel-biodiesel-ethanol) blends is investigated.
TL;DR: In this article, the authors have shown that the cavitation in fuel injector nozzles has a significant effect on the quality of spray and charge preparation, but the mechanism and degree of this effect is unclear.
Abstract: Diesel fuel injector nozzles have a significant effect on the quality of spray and charge preparation. However, the mechanism and degree of this effect is unclear. The complexity of the internal nozzle flow has hindered the study of the fuel injection process. Diesel fuel injector nozzle flows are highly turbulent and usually two-phase. Several experiments have shown the presence of cavitation in the nozzles to be a dominating effect. Recent experimental work has revealed new qualitative details about the cavitation in fuel injector nozzles. The cavity tends to be smooth near the inlet, transitioning to a more ruffled appearance downstream. These flows are also strongly asymmetric in realistic geometries. Additionally, photographs have shown string cavitation inside the sac volume extending into the nozzles. The strings appear to be a form of stratified two-phase flow, like the cavities near the inlet corner. Like the cavities, the strings break down into bubbly flow near the exit of the nozzle. F...
TL;DR: In this paper, the influence of compression ratio on the performance of a spark ignition engine fuelled by a blend of 78% gasoline-22% ethanol (E22) or hydrous ethanol(E100) was investigated.
TL;DR: In this article, an extended computational study has been performed in a multi-hole nozzle modeling 10 different fixed needle lifts, and the internal flow has been modeled with a continuum nozzle flow model that considers the cavitating flow as a homogeneous mixture of liquid and vapour.