Reducing Engine-Out Emissions for Medium High Speed Diesel Engines: Influence of Injection Parameters

Large-eddy simulation of n-dodecane spray flame: Effects of nozzle diameters on autoignition at varying ambient temperatures

“…Decreasing D noz was shown to reduce the IDT [3,7]. At the same time, other studies [4][5][6] showed contradicting findings, where varying the D noz had no significant effects on the IDT in a diesel engine. It is worth mentioning that incylinder flow varies from one engine to another due to different piston bowl and intake valves configurations.…”

“…Understanding the ignition characteristics of diesel spray combustion is critical as a longer ignition delay time (IDT) increases the local pre-combustion mixing, thus reducing emission [1,2]. Different nozzle diameter sizes (D noz ) show significant effect on the ignition characteristics in diesel engines [3][4][5][6][7]. Decreasing D noz was shown to reduce the IDT [3,7].…”

Diesel aerosols and gases in underground mines: guide to exposure assessment and control.

“…Additionally, high-pressure fuel injection allows the fuel spray to penetrate further into the chamber, enabling a greater dispersion of the fuel spray. These combined benefits increase the amount of oxygen available to the fuel during combustion and, ther efore, he lp to reduce the formation of DPM [Roels et al 2009;Busch et al 2007;DEEP 1999;Majewski and Jääskeläinen 2010].…”

“…Fuel injectors themselves are designed with spray angles and timing events that coordinate with the position of the piston bowl within the chamber (so as to prevent fuel impingement on the cooler metal surfaces within the chamber) [Roels et al 2009;Heywood 1988b;Vanegas et al 2009;Horibe et al 2007;…”