Ignition Delay in Low Temperature Combustion

Arrhenius type empirical ignition delay equations based on the phenomenology of in-cylinder conditions for wide operating ranges in modern diesel engines

“…The low temperature combustion establishes both clean and efficient combustion while maintaining a specific ignition delay for premixing and the precise control of the ignition delay is essential. 10–21…”

“…The low temperature combustion establishes both clean and efficient combustion while maintaining a specific ignition delay for premixing and the precise control of the ignition delay is essential. [10][11][12][13][14][15][16][17][18][19][20][21] As is well known, the exhaust gas emissions including the NOx and smoke are strongly affected by the mixing time determined with the ignition delays in low temperature combustion when the operation parameters including the fuel injection pressures and the oxygen concentrations are varied. [16][17][18][19][20][21] Dependence of the ignition delay on the operating conditions has not been clarified, and this is one of the problems for application of new combustion modes including the low temperature combustion.…”

“…[10][11][12][13][14][15][16][17][18][19][20][21] As is well known, the exhaust gas emissions including the NOx and smoke are strongly affected by the mixing time determined with the ignition delays in low temperature combustion when the operation parameters including the fuel injection pressures and the oxygen concentrations are varied. [16][17][18][19][20][21] Dependence of the ignition delay on the operating conditions has not been clarified, and this is one of the problems for application of new combustion modes including the low temperature combustion. Simple and practical ways for the accurate prediction of ignition delays are required to develop real-time control with an electronic control unit (ECU) based on model results and hardware in the loop simulators (HILS) to apply the latest combustion strategies efficiently.…”

Effect of Timing and Pattern of Fuel Injection on Performance and Emissions of a Diesel Engine in the Low-Temperature Combustion Mode – An Experimental Investigation

“…These systems allow variations in fuel injection timing, fuel quantity, fuel injection pressure and also allow multiple injections in one engine cycle (Zhao, 2007;Horibe, 2009 andTorregrosa, 2013). Injecting a small quantity of fuel very early during the compression stroke increases the ignition delay (Drallmeler et al, 2018) and the possibility of formation of a very lean homogeneous mixture leading towards homogeneous charge compression ignition (HCCI) combustion which helps reduce NOx and smoke emissions simultaneously (Itoli, 2006). Wanhua et al, (2005) injected diesel in six pulses to form a homogeneous mixture.…”