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Numerical simulations were performed for the effect of injection and ignition timings on combustion and the generation of formaldehyde and unburned methanol emissions in the cylinder of a stratified charge direct injection spark ignition (DISI) methanol engine during cold start using AVL-fire, coupling the methanol chemical and kinetic reaction mechanisms. A non-uniform spray-line distribution nozzle...
The effects of overall equivalence ratio, injection timing, and ignition timing on formaldehyde and unburned methanol emissions, cylinder temperature histories, and formaldehyde emission histories of a spark ignition direct injection stratified charge methanol engine during cold start and steady state conditions were simulated using computational fluid dynamics coupling the methanol chemical kinetics...
A non-uniform spray-line distribution nozzle was used to form a stratified charge distribution of methanol-air mixture in-cylinder. Computational fluid dynamics were employed to simulate the methanol chemical kinetics reaction mechanism. The effects of an overall methanol-air equivalence ratio on the mixture distribution of the in-cylinder, cylinder pressure, heat release rate, cylinder temperature,...
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