The effects of spark timing, unburned gas temperature, and negative valve overlap on the rates of stoichiometric spark assisted compression ignition combustion

Experimental investigation of the influence of internal and external EGR on the combustion characteristics of a controlled auto-ignition two-stroke cycle engine

“…In the late 70s initial attempts concerning auto-ignited twostroke engine resulted in significant improvements in the combustion stability, fuel efficiency and exhaust emissions [22][23][24][25][26][27][28][29]. Numerous investigations have performed using exhaust port throttling to increase the amount of trapped residual gas in the combustion chamber [15,[30][31][32][33][34][35][36][37].…”

Enhanced heat release analysis for advanced multi-mode combustion engine experiments

“…After validating the ACE-HRA with the KIVA simulation, the capabilities of ACE-HRA were demonstrated by application to a recent experimental study by Olesky et al [52]. In the SACI study, the authors investigated the effects of spark timing and unburned temperature on combustion phasing and burn rate.…”

Twin Shaft-Geared Crankweb Crankshaft System with Optimization of Crankshaft Dimensions Using Integrated Artificial Neural Network-Multi Objective Genetic Algorithm

“…Tribological significance of major frictional components in an engine has also been documented and it has been proved that combined application of surface treatment and decrease in lubricant viscosity can improve fuel economy by over 4% (Taylor, 1998;Fox, 2005). There have been significant advancements in improving the fuel efficiency of the engine by varying burn duration, combustion phasing and load by turbocharging, varying spark timing and unburned temperature (Olesky et al, 2013). A two-zone engine thermodynamic model has also been developed to study the characteristics in an IC engine (Rakopoulos et al, 2009).…”

“…Modification of the slider crank mechanism, addition of an eccentric connector between connecting rod and crankpin, variation of valve timings to control the engine load, dynamic optimization of a mean value model comprising of two state variables namely intake manifold and engine speed represent some of the ways to improve the fuel efficiency and reduce (Fontana and Galloni, 2009;Erkaya et al, 2007;Saerens et al, 2009). Two-step surface response methodology based engine optimization, variation of spark timings and unburned gasoline temperatures have resulted in fuel economy improvement (Molina et al, 2014;Olesky et al, 2013). Research has been conducted to develop a two-cylinder gamma type low temperature differential engine operating on Stirling cycle; various parameters have been compared with that of a diesel engine (Tavakolpour et al, 2008).…”