Examination of combustion characteristics and phasing strategies of a natural gas HCCI engine

Soylu, Seref

doi:10.1016/j.enconman.2004.02.013

Cited by 67 publications

(19 citation statements)

References 28 publications

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“…Studies of methane spark-ignition direct-injection engines to date have concentrated on the methane-air homogeneous charge combustion and few reports can be found related to stratified charge combustion [33][34][35][36]. In addition, many aspects of hydrogen and diluent addition as well the effect of varying injection pressure, chamber pressure, and chamber temperature on methane SIDI stratified charge combustion in the presence of turbulence have not been well understood and require further investigation.…”

Section: Introductionmentioning

confidence: 94%

Lean Partially Premixed Combustion Investigation of Methane Direct-Injection Under Different Characteristic Parameters

Askari

Metghalchi

Hannani

et al. 2014

Journal of Energy Resources Technology

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The effects of hydrogen addition, diluent addition, injection pressure, chamber pressure, chamber temperature and turbulence intensity on methane-air partially premixed turbulent combustion have been studied experimentally using a constant volume combustion chamber (CVCC). The fuel-air mixture was ignited by centrally located electrodes at given spark delay times of 1, 5, 40, 75, and 110ms. Experiments were performed for a wide range of hydrogen volumetric fractions (0% to 40%), simulated diluent volumetric fractions (0% to 25% as a diluent), injection pressures (30-90 bar), chamber pressures (1-3 bar), chamber temperatures (298-432 K) and overall equivalence ratios of 0.6, 0.8, and 1.0. Elame propagation images via the Schlieren/Shadowgraph technique, combustion characteristics via pressure derived parameters and pollutant concentrations were analyzed for each set of conditions. The results showed that peak pressure and maximum rate of pressure rise increased with the increase in chamber pressure and temperature while changing injection pressure had no considerable effect on pressure and maximum rate of pressure rise. The peak pressure and maximum rate of pressure rise increased, while combustion duration decreased with simultaneous increase of hydrogen content. The lean burn limit of methane-air turbulent combustion was improved with hydrogen addition. Addition of diluent increased combustion instability and misfiring while decreasing the emission of nitrogen oxides (NOJ.

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Section: Introductionmentioning

confidence: 94%

Lean Partially Premixed Combustion Investigation of Methane Direct-Injection Under Different Characteristic Parameters

Askari

Metghalchi

Hannani

et al. 2014

Journal of Energy Resources Technology

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“…Having been a major source of pollution in the form of spark ignition or diesel engines, ICEs' environmental *Corresponding author. e-mail: shahrir@ukm.my impact from their exhaust emissions and the inevitable depletion of crude oil reserves result in a need to create a clean and efficient engine (Soylu, 2005). Due to their advantages in controlling fuel economy, direct-injection (DI) systems appear to be a key to the successful application of the spark ignition engine in the commercial passenger car market.…”

Section: Introductionmentioning

confidence: 97%

Emission analysis of a compressed natural gas directinjection engine with a homogenous mixture

Abdullah

Kurniawan

Khamas

et al. 2011

Int.J Automot. Technol.

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In an era in which environmental pollution and depletion of world oil reserves are of major concern, emissions produced by automotive vehicles need to be controlled and reduced. An ideal solution is to switch to a cleaner fuel such as natural gas, which generates cleaner emissions. In addition, control over the in-cylinder air-fuel mixture can be best achieved through a direct-injection mechanism, which can further improve combustion efficiency. This need for cleaner automobiles provides the motivation for this paper's examination of the use of computational fluid dynamic (CFD) simulations to analyze the concentrations of the exhaust gases produced by a compressed natural gas engine with a direct-fuel-injection system. In this work, a compressed natural gas direct-injection engine has been designed and developed through a numerical simulation using computational fluid dynamics (CFD) to provide an insight into complex in-cylinder behavior. The emissions analyzed in this study were carbon monoxide (CO), nitric oxide (NO) and carbon dioxide (CO 2 ), i.e. the main pollutants produced by natural gas combustion. Based on a stoichiometric mixture, the concentrations of CO and NO were computed using the dissociation of carbon dioxide and the extended Zeldovich mechanism. CO 2 was calculated using a mass balance of the species involved in the combustion process. The simulation results were then compared with the experimental data generated by a single-cylinder research engine test rig. A good agreement was obtained with the experimental data for the engine speeds considered for all emissions concentrations.

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“…Since the mixture is lean and is fully controlled by chemical kinetics, there are new challenges in developing HCCI engines: difficulty controlling the auto-ignition of the mixture and the heat release rate at high load operation, achieving a cold start, meeting emission standards and controlling knock [29,30]. The advantages of using HCCI technology in IC engines are:…”

Section: Homogeneous Charge Compression Ignition Enginesmentioning

confidence: 99%

An Introduction to a Homogeneous Charge Compression Ignition Engine

Hairuddin

Wandel²,

Yusaf³

2014

J MECH ENG SCI

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Examination of combustion characteristics and phasing strategies of a natural gas HCCI engine

Cited by 67 publications

References 28 publications

Lean Partially Premixed Combustion Investigation of Methane Direct-Injection Under Different Characteristic Parameters

Lean Partially Premixed Combustion Investigation of Methane Direct-Injection Under Different Characteristic Parameters

Emission analysis of a compressed natural gas directinjection engine with a homogenous mixture

An Introduction to a Homogeneous Charge Compression Ignition Engine

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