A Study of Lean Burn Pre-Chamber Concept in a Heavy Duty Engine

• DOI: 10.4271/2019-24-0107
• Publication Date: 2019-09-10T09:01:28Z
• Authors: Ponnya Hlaing; Manuel Echeverri ...; Vijai Shankar Bha...; Emre Cenker; Moez Ben Houidi; Bengt Johansson
• Keywords: Lean burn; Heavy duty; Burn-in

Due to stringent emission standards, the demand for higher efficiency engines has been unprecedentedly high in recent years.Among several existing combustion modes, pre-chamber spark ignition (PCSI) emerges be a potential candidate high-efficiency engines.Research on concept exhibit indicated through lean limit extension while maintaining stability.In this study, unique geometry was tested single-cylinder heavy-duty engine at low load conditions.The features narrow throat, which designed packaged inside commercial diesel injector pocket.The fueled with methane main chamber supplied an ethanol/air mixture.The 'avalanche activated combustion' or L.A.G. process explored relies enriched generate radicals which, upon being discharged into chamber, will trigger sites distributed thus achieving fast combustion.The ability of PCSI enhance progressive enrichment demonstrated.In addition, passive concept, where no additional fuel injected pre-chambers, also and compared against experiments.The processed data rates stability evident limit.The engine-out emissions, measured by exhaust gas analyzer, were reported together data.