Effects of Ignition Timing and Air-Fuel Ratio on In-Cylinder Heat Flux and Temperatures in a Four-Stroke, Air Cooled, Homogeneous Charge Engine

Boyce, Brian P.; Martin, Jay K.; Poehlman, Art; Shears, Doug

doi:10.4271/1999-01-0284

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…They concluded that if we advance the ignition timing more than a suitable point it leads to knock and if we retard the ignition timing it may lead to misfiring. Boyce et al (1999) did some research in the effect of an ignition timing and air/fuel ratio on the release of energy in combustion chamber and temperature of a combustion chamber. They found advancing the ignition timing increase the rate of energy release and temperature of the combustion chamber.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation on the effect of different parameters on the performance and the emission of a spark ignition (SI) engine

Mirgolbabaei¹,

Bozorgi²,

Etghani³

2013

Int. J. Phys. Sci.

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In this work, NISSAN Z24 engine was simulated numerically and valves and ignition timings were modified in order to improve the engine performance and emissions. The engine was simulated using a version of the Los Alamos code KIVA-3V2 which is a computer program for the numerical calculation of transient, two and three dimensional chemically reactive flows with sprays. The computational grid was generated by the commercial software, ANSYS ICEM CFD. To validate the code, a comparison between experimental and theoretical results has been made, which confirm good qualitative agreement between these results. A series of parametric studied is performed to gain a better understanding of the effects of valves and ignition timings on the engine performance and emission. The results show that the engine volumetric efficiency, output power, emissions and performance are well improved by applying the optimal values.

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Section: Introductionmentioning

confidence: 99%

Numerical investigation on the effect of different parameters on the performance and the emission of a spark ignition (SI) engine

Mirgolbabaei¹,

Bozorgi²,

Etghani³

2013

Int. J. Phys. Sci.

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show abstract

“…During the design phase, models are used to estimate the thermal loading of engine components [16,17]. However, predicting the temperatures and heat transfer inside an engine is difficult and requires complex models which are hard to validate since there is a lack of actual engine data [18,19].…”

Section: Characterization Problem Statementmentioning

confidence: 99%

“…Boyce et al [18] studied the effects of air fuel ratio on in-cylinder heat flux and temperatures in a small utility engine. They utilized a thermopile based heat flux sensor manufactured by Vatell to measure the surface heat flux on the cylinder head.…”

Section: Parametric Effects On In-cylinder Temperatures and Heat Tranmentioning

confidence: 99%

Thermal Characterization of a Gasoline Turbocharged Direct Injection (Gtdi) Engine Utilizing Lean Operation and Exhaust Gas Recirculation (Egr)

Madison¹

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A study of heat flux in a constant-volume combustion chamber

Lee

Kim

2003

Proceedings of the Institution of Mechanical Engineers, Part D:

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In the production of internal combustion engines, there has been a move towards the development of high-performance engines with fuel economy, lighter weights and smaller sizes. These trends help to answer problems related to thermal load and abnormal combustion, etc., in these engines. In order to clarify these problems, a thin film-type probe for instantaneous measurement of surface temperatures has been suggested. A method for manufacturing such a probe was established in this study. The instantaneous surface temperature of a constant-volume combustion chamber was measured by this probe, and heat flux was calculated and analysed with a Fourier series. For a thorough understanding of the characteristics of combustion, the authors measured the wall temperature of the combustion chamber and computed heat flux through a cylinder wall while varying the protrusion height of the probe. To achieve the above goals, an instantaneous temperature probe was developed, thereby making possible the analysis of the instantaneous temperature of the wall surface and unsteady heat flux in the constant-volume combustion chamber.

show abstract

Effects of Ignition Timing and Air-Fuel Ratio on In-Cylinder Heat Flux and Temperatures in a Four-Stroke, Air Cooled, Homogeneous Charge Engine

Cited by 5 publications

References 4 publications

Numerical investigation on the effect of different parameters on the performance and the emission of a spark ignition (SI) engine

Numerical investigation on the effect of different parameters on the performance and the emission of a spark ignition (SI) engine

Thermal Characterization of a Gasoline Turbocharged Direct Injection (Gtdi) Engine Utilizing Lean Operation and Exhaust Gas Recirculation (Egr)

A study of heat flux in a constant-volume combustion chamber

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