Lambda load control in spark ignition engines, a new application of prechamber ignition systems

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorSantos, Nathália Duarte Souza Alvarenga-
Autor(es): dc.creatorAlvarez, Carlos Eduardo Castilla-
Autor(es): dc.creatorRoso, Vinícius Rückert-
Autor(es): dc.creatorBaeta, José Guilherme Coelho-
Autor(es): dc.creatorValle, Ramon Molina-
Data de aceite: dc.date.accessioned2026-02-09T12:20:29Z-
Data de disponibilização: dc.date.available2026-02-09T12:20:29Z-
Data de envio: dc.date.issued2022-02-13-
Data de envio: dc.date.issued2022-02-13-
Data de envio: dc.date.issued2021-05-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/49312-
Fonte completa do material: dc.identifierhttps://doi.org/10.1016/j.enconman.2021.114018-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1159331-
Descrição: dc.descriptionEnergy shortages based on current global demand requires the technological solutions to increase fuel conversion efficiency in internal combustion engines. In this context, lean combustion is a relevant technique for increasing thermal efficiency and reducing pumping losses. Another strategy to reduce engine pumping losses is operating without restrictions imposed by the throttle valve, as in wide open throttle (WOT) conditions, when load is regulated by fuel injection. This technique, already used in diesel engines, is not currently used in Otto cycle engines due to limitations of operating outside fuel stoichiometry. However, lean operation is increasingly feasible with the development of technologies such as the prechamber ignition system (PCIS), which provides high ignition energy and mixture turbulence, improving combustion. The present work compares the effects of mixture enleanment in an Otto ethanol multicylinder engine using a prototype PCIS with the original ignition system running stoichiometrically. The results indicate that the use of PCIS enables the engine load control by variations of lambda, extending the lean limit to λ = 1.35 and λ = 1.6 with the homogeneous and stratified systems respectively. The use of PCIS in SI engines could increase the efficiency of stationary generator sets and hybrid vehicles, also reducing NOx, CO and CO2 engine-out emissions at partial loads.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceEnergy Conversion and Management-
Palavras-chave: dc.subjectDe-throttling-
Palavras-chave: dc.subjectPrechamber systems-
Palavras-chave: dc.subjectLean combustion-
Palavras-chave: dc.subjectPower generation-
Palavras-chave: dc.subjectHybrid vehicles-
Palavras-chave: dc.subjectSistema de ignição com pré-câmara-
Palavras-chave: dc.subjectCombustão "magra"-
Palavras-chave: dc.subjectGeração de energia-
Palavras-chave: dc.subjectVeículos híbridos-
Título: dc.titleLambda load control in spark ignition engines, a new application of prechamber ignition systems-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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