Year: 2014
Type: article
Abstract: There are two types of fuel supply method in CNG vehicles.One is premixed ignition and the other is gas-jet ignition.In premixed ignition, the fuel is introduced with intake air so that homogeneous air-fuel mixture may form.The ignitability of this method depends on the global equivalence ratio.In gas-jet ignition, CNG is introduced directly into the engine combustion chamber.The overall mixture is stratified by retarded fuel injection.In this study, a visualization technique was employed to obtain fundamental properties regarding overall mixture formation and combustion characteristics of direct injected CNG fuel inside a constant volume chamber and engine.For gas-jet visualization, Schlieren high speed imaging is used with the effects of ambient pressure and impingement wall on mixture formation being investigated.
Authors: S. W. Lee, Doo-Sung Baik, T. Rogers, P. Petersen
Institutions: Kookmin University, Daejin University, RMIT University
Language: English
Subfield: Fluid Flow and Transfer Processes
Field: Chemical Engineering
Domain: Physical Sciences
Open Access status: bronze
Award: G3494007552
OpenAlex ID: W2067802001