A computational study of combustion in compression ignition natural gas engine with separated chamber

Zheng, Qing Ping; Zhang, Hui Ming; Zhang, De Fu

doi:10.1016/j.fuel.2005.02.021

Cited by 16 publications

(9 citation statements)

References 17 publications

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“…Biodiesel could also be used in HCCI engines, as it currently receives increasing attention from researchers worldwide [38][39][40][41][42][43][44] as a renewable energy or for vehicle engines. Various researchers have investigated the HCCI engine both experimentally [45][46][47][48] and numerically [45,[49][50][51]. Many numerical studies used a computational fluid dynamics (CFD) approach to obtain more accurate results of combustion temperature and products [52][53][54][55][56][57][58][59].…”

Section: Introductionmentioning

confidence: 99%

Single-zone zero-dimensional model study for diesel-fuelled homogeneous charge compression ignition (HCCI) engines using Cantera

Hairuddin¹,

Yusaf²,

Wandel³

2016

Int. J. Automot. Mech. Eng.

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Homogeneous charge compression ignition (HCCI) engine technology is relatively new and the combustion behavior in an HCCI engine is difficult to predict. The combustion is fully controlled by the chemical kinetics and the chemical reaction of the mixture is influenced by changing input parameters. A zero-dimensional single-zone model was used to investigate the combustion behavior of a diesel engine operating in HCCI mode. An open source chemical kinetics package from Cantera was used in this study. The combustion behaviour can be observed, where H2O2 was fully decomposed during the main combustion event. The time for H2O2 to completely decompose into OH radicals was very short, which was about 5°CA. The combustion phasing was predicted in accordance with the experiment. The auto-ignition can be controlled by controlling the intake temperature or AFR. The start of combustion was advanced by increasing the intake temperature from 20 to 70°C and reducing the AFR from 58 to 29. However, reducing AFR will increase the in-cylinder peak pressure. In general, a zero-dimensional model is a useful and faster tool to predict the combustion phasing. When coupled with chemical kinetics, it provides more accurate results.

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Section: Introductionmentioning

confidence: 99%

Single-zone zero-dimensional model study for diesel-fuelled homogeneous charge compression ignition (HCCI) engines using Cantera

Hairuddin¹,

Yusaf²,

Wandel³

2016

Int. J. Automot. Mech. Eng.

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“…A multidimensional modeling of the formation of NO in a directinjection natural gas engine (modified from a diesel engine with an auto-ignition system) was performed by Agarwal and Assanis (2000). The combustion process and fluid flow in a compression ignition natural gas engine with a separated chamber was analyzed by Zheng et al (2005) by coupling commercial CFD software with detailed chemical kinetics.…”

Section: Introductionmentioning

confidence: 99%

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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“…Combustion and operation limits of the engine as well as the influence of the fuel composition were well reproduced by the simulations. Zheng, Zhang & Zhang (2005) simulated a prechamber autoignition engine with direct injection of natural gas using the GRI3.0 reaction mechanism.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulations of a Prechamber Autoignition Engine Operating on Natural Gas

Heyne¹,

Millot²,

Favrat³

2011

Int. J. Thermo

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At our laboratory extensive research has been conducted on the conversion of conventional Diesel cogeneration engines to operation on natural gas and biogas. In the framework of this research, a numerical simulation of a prechamber autoignition gas engine has been performed based on an experimental test case. With a simplified finiterate/eddy-dissipation model for the combustion of natural gas, it was possible to properly reproduce the experiment considering the combustion duration, ignition timing and overall energy balance. A modification of the original cylindrical-conical prechamber geometry to a simpler cylindrical one was tested with the simulation model. The influence of burnt gases inside the prechamber was assessed simulating the mixture formation inside the prechamber. The simulations showed little effect of taking into account the non-homogeneities in the gas phase on the combustion duration. The new cylindrical geometry envisaged did not show any improvement in the combustion homogeneity inside the prechamber and its volume (limited by the real engine geometry) is in fact not sufficient to properly ignite the main chamber according to the simulations. The model can be used to further guide design modifications of the prechamber engine to improve performance.

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A computational study of combustion in compression ignition natural gas engine with separated chamber

Cited by 16 publications

References 17 publications

Single-zone zero-dimensional model study for diesel-fuelled homogeneous charge compression ignition (HCCI) engines using Cantera

Single-zone zero-dimensional model study for diesel-fuelled homogeneous charge compression ignition (HCCI) engines using Cantera

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

Numerical Simulations of a Prechamber Autoignition Engine Operating on Natural Gas

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