Development of empirically based burning rate sub-models for a natural gas engine

Soylu, Seref; Gerpen, Jon Van

doi:10.1016/s0196-8904(03)00164-x

Cited by 30 publications

(19 citation statements)

References 14 publications

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“…In the early years, increasing engine power and engine working reliability were the principal aims for engine designers. In recent years, however, ignition timing has brought increased attention to development of advanced SI engines for maximizing performance [2,3].…”

Section: Introductionmentioning

confidence: 99%

“…Soylu and Gerpen developed a two zone thermodynamic model to investigate the effects of ignition timing, fuel composition, and equivalence ratio on the burning rate and cylinder pressure for a natural gas engine [5]. Burning rate analysis was carried out to determine the flame initiation period and the flame propagation period at different engine operating conditions [5].…”

Section: Introductionmentioning

confidence: 99%

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Study and the effects of ignition timing on gasoline engine performance and emissions

Zareei

Kakaee

2013

Eur. Transp. Res. Rev.

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Introduction Ignition timing, in a spark ignition engine, is the process of setting the time that an ignition will occur in the combustion chamber (during the compression stroke) relative to piston position and crankshaft angular velocity. Setting the correct ignition timing is crucial in the performance and exhaust emissions of an engine.The objective of the present work is to evaluate whether variable ignition timing can be effect on exhaust emission and engine performance of an SI engine. Method For achieving this goal, at a speed of 3400 rpm, the ignition timing has been changed in the range of 41°BTDC to 10°ATDC and for optimize operation, ignition timing has been designed at wide-open throttle and at last, the performance characteristics such as power, torque, BMEP, volumetric efficiency and emissions are obtained and discussed. Results The results show optimal power and torque is achieved at 31°CA before top dead centre and volumetric efficiency, BMEP have increased with rising ignition timing. O 2 , CO 2 , CO has been almost constant, but HC with advance of ignition timing increased and the lowest amount NO x is obtained at 10 BTDC. Conclusions In conclusion, it obtained that ignition timing can be used as an alternative way for predicting the performance of internal combustion engines. Also engine speed and throttle position were all found to significantly influence performance in this engine.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study and the effects of ignition timing on gasoline engine performance and emissions

Zareei

Kakaee

2013

Eur. Transp. Res. Rev.

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“…A typical heat release curve consists of the initial ignition lag(flame development) followed by flame propagation and flame termination [6]. Heat addition rate is zero for most of the cycle.…”

Section: Burn Fraction Variationmentioning

confidence: 99%

“…[3] First, a function is defined containing the equation (6). Then that function is called in the syntax as shown below for integration.…”

Section: Piston Volume Sweepmentioning

confidence: 99%

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Effect of Spark Timing on Combustion Process of SI Engines using MATLAB

Karkamkar¹

2013

IJCA

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The spark timing plays a significant role in the combustion process and in deciding the engine parameters of SI engine. This paper aims at demonstrating the effect of advanced and retarded spark timing on the burn fraction variation versus crank angle, cumulative heat release rate versus the crank angle and the pressure variation as a function of crank angle with the help of MATLAB programs. For this purpose, a basic finite heat release model is used for the combustion process in SI engines. This model can also be extended to evaluate effect of spark timing on engine work and thermal efficiency. In each section of the paper, the codes used for analysis are provided for future research work. Salient results, such as peak pressure crank angles for different spark timings , are derived from analysis.

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