Results 1 to 10 of about 10,006 (189)
Internally Catalyzed Hydrogen Atom Transfer (I-CHAT)—A New Class of Reactions in Combustion Chemistry [PDF]
MoleculesThe current paradigm of low-T combustion and autoignition of hydrocarbons is based on the sequential two-step oxygenation of fuel radicals. The key chain-branching occurs when the second oxygenation adduct (OOQOOH) is isomerized releasing an OH radical ...
Rubik Asatryan +3 more
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Autoignition in nonpremixed flow [PDF]
, 1993 The objective of this investigation has been to improve understanding of autoignition processes in nonpremixed flow fields of the types encountered in Diesel-engine ignition, through theoretical analyses that employ asymptotic methods of applied ...
Liñán Martínez, Amable +1 more
core +3 more sources
Energies, 2023 It was found in our previous work that hyperbranched polyester (HPE) can generate radicals and accelerate the chemical reactions of hydrocarbon fuels used as initiators.
Derui Jin +4 more
doaj +1 more source
Replicating HCCI-like autoignition behavior: What gasoline surrogate fidelity is needed?
Applications in Energy and Combustion Science, 2022 This work seeks to characterize the fidelity needed in a gasoline surrogate with the intent to replicate the complex autoignition behavior exhibited within advanced combustion engines, and specifically Homogeneous Charge Compression Ignition (HCCI).
Song Cheng +7 more
doaj +1 more source
Octane Index Applicability over the Pressure-Temperature Domain
Energies, 2021 Modern boosted spark-ignition (SI) engines and emerging advanced compression ignition (ACI) engines operate under conditions that deviate substantially from the conditions of conventional autoignition metrics, namely the research and motor octane numbers
Tommy R. Powell +6 more
doaj +1 more source
Archives of Mechanics, 2021 We analyse an autoignition process in a two-phase flow in a temporally evolving mixing layer formed between streams of a cold liquid fuel (heptane at 300 K) and a hot oxidizer (air at 1000 K) flowing in opposite directions. We focus on the influence of a
J. Stempka, Ł. Kuban, A. Tyliszczak
doaj +1 more source
Energies, 2023 One factor limiting the exploitation of hydrogen as a fuel in internal combustion engines is their tendency to autoignition. In fact, on one hand, its low activation energy facilitates autoignition even with low compression ratios; on the other hand ...
Antonio Caricato +5 more
doaj +1 more source
Energy Science & Engineering, 2022 The aim of this paper is to analyze local autoignition induced by secondary flame acceleration. The secondary flame acceleration process and the local autoignition formation mechanism at the condition of the secondary flame acceleration propagation were ...
Yangyang Yu +3 more
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The Assessment of Autoignition of Modified Jet Fuels
Energies, 2021 The condition of the natural environment, including breathable air, indicates that actions are to be taken related to the reduction of exhaust emissions from transport. One of the sectors of transport is aviation.
Jerzy Merkisz +2 more
doaj +1 more source
Autoignition flame dynamics in sequential combustors [PDF]
Combustion and Flame, 2018 Abstract This numerical study investigates the linear and non-linear flame dynamics in the second stage of a sequential combustor, with methane fuel injection into vitiated hot gas. It focuses on the heat release rate response of the sequential flame to entropy waves.
Oliver Schulz, Nicolas Noiray
openaire +3 more sources