Optical and simulation investigation of effect of jet-wall interaction on combustion performance of methanol pre-chamber turbulent jet ignition system

Applied Energy, Год журнала: 2025, Номер 385, С. 125533 - 125533

Опубликована: Фев. 17, 2025

Язык: Английский

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Suppressing pre-ignition and knock in hydrogen direct injection spark ignition engines with variable valve timing and split injection

Energy Conversion and Management, Год журнала: 2025, Номер 327, С. 119570 - 119570

Опубликована: Янв. 28, 2025

Язык: Английский

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Numerical investigation on the propagation process of ammonia diffusion flame ignited by hydrogen jet flame in a chamber with piston bowl

Physics of Fluids, Год журнала: 2025, Номер 37(2)

Опубликована: Фев. 1, 2025

Hydrogen jet flame ignition technology, based on active pre-chamber, is an effective approach to improve the combustion inertness of ammonia. Revealing transition mechanism ammonia diffusion ignited by hydrogen flame, driven coupling chemical reactions and mass transfer, great significance for developing advanced strategies. This paper offers a comprehensive analytical perspective development process ammonia–hydrogen combustion. The results show that, compared with pre-chamber structure, direction has more significant impact turbulence kinetic energy mixture. slender throat structure intensifies turbulent thermal dissipation effect, which detrimental formation propagation initial flame. can be divided into four stages. squeezed main chamber during mixture stage significantly impacts speed During from shifts its dominant factor transfer rate reaction rate. initially focuses thin zone, followed front becoming corrugated under influence vortices study provides important theoretical basis strategies, especially in context as power sources zero-carbon marine vessels.

Язык: Английский

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Passage parameters study of a new prechamber type combustion system aiming at decarbonization and emission reduction in a diesel engine

Sustainable Energy Technologies and Assessments, Год журнала: 2025, Номер 75, С. 104248 - 104248

Опубликована: Фев. 20, 2025

Язык: Английский

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Characteristics of high-pressure spray combustion of liquid ammonia blended with methanol/propane in a marine engine

Fuel, Год журнала: 2025, Номер 391, С. 134808 - 134808

Опубликована: Фев. 22, 2025

Язык: Английский

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Study of NOx formation mechanisms in ammonia combustion under different adding hydrogen ignition modes using a constant volume combustion chamber

Fuel, Год журнала: 2025, Номер 398, С. 135556 - 135556

Опубликована: Май 2, 2025

Язык: Английский

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