Experimental and numerical investigations of the unscavenged prechamber combustion in a rapid compression and expansion machine under engine-like conditions
Even though the unscavenged prechamber has been extensively applied in lean premixed
natural gas engines, the limited understanding of the fundamentals and the lack of predictive …
natural gas engines, the limited understanding of the fundamentals and the lack of predictive …
Experimental study of the effects of pre-chamber geometry on the combustion characteristics of an ammonia/air pre-mixture ignited by a jet flame
Z Cui, J Tian, X Zhang, S Yin, W Long, H Song - Processes, 2022 - mdpi.com
In the future, ammonia is expected to become a carbon-free fuel for internal combustion
engines. However, the flammability of ammonia is poorer compared to conventional fuels …
engines. However, the flammability of ammonia is poorer compared to conventional fuels …
An experimental and one-dimensional modeling analysis of turbulent gas ejection in pre-chamber engines
JM Garcia-Oliver, Y Niki, R Rajasegar, R Novella… - Fuel, 2021 - Elsevier
Experimental results from a study on the evolution of gas jets ejected through the orifices of
a pre-chamber in a heavy-duty optical engine are presented. The work examines conditions …
a pre-chamber in a heavy-duty optical engine are presented. The work examines conditions …
Experimental observation of the combustion modes based on a novel multistage pre-chamber turbulent jet ignition (TJI) system
Transient jet flame propagation under newly proposed multistage pre-chambers is studied in
a constant-volume combustion chamber with a high-speed schlieren photography system …
a constant-volume combustion chamber with a high-speed schlieren photography system …
Combustion sensitivity to the nozzle hole size in an active pre-chamber ultra-lean heavy-duty natural gas engine
G Onofrio, P Napolitano, P Tunestål, C Beatrice - Energy, 2021 - Elsevier
Active pre-chamber configurations are considered a valuable solution for improving the
operation of the internal combustion engine, in the view to overcome the many challenges it …
operation of the internal combustion engine, in the view to overcome the many challenges it …
A study of lean burn pre-chamber concept in a heavy duty engine
Due to stringent emission standards, the demand for higher efficiency engines has been
unprecedentedly high in recent years. Among several existing combustion modes, pre …
unprecedentedly high in recent years. Among several existing combustion modes, pre …
Prechamber hot jet ignition of ultra-lean H₂/air mixtures: Effect of supersonic jets and combustion instability
An experiment has been developed to investigate the ignition characteristics of ultra-lean
premixed H₂/air mixtures by a supersonic hot jet. The hot jet is generated by combustion of …
premixed H₂/air mixtures by a supersonic hot jet. The hot jet is generated by combustion of …
Characterization of combustion in a gas engine ignited using a small un-scavenged pre-chamber
Prechamber ignition technology receives increasing attention due to its considerable
improvement on engine combustion efficiency and stability. However, fundamental …
improvement on engine combustion efficiency and stability. However, fundamental …
A computational study on the effect of the orifice size on the performance of a turbulent jet ignition system
Fully three-dimensional computational fluid dynamic simulations with detailed combustion
chemistry of a turbulent jet ignition system installed in a rapid compression machine are …
chemistry of a turbulent jet ignition system installed in a rapid compression machine are …
A numerical investigation of ignition of ultra-lean premixed H₂/air mixtures by pre-chamber supersonic hot jet
Gas engines often utilize a small-volume pre-chamber in which fuel is injected at near
stoichiometric condition to produce a hot turbulent jet which then ignites the lean mixture in …
stoichiometric condition to produce a hot turbulent jet which then ignites the lean mixture in …