Simulation Models for Spark Ignition Engine: A Comparative Performance Study

Chaudhari, Ashish J.; Sahoo, Niranjan; Kulkarni, Vinayak

doi:10.1016/j.egypro.2014.07.276

Cited by 22 publications

(12 citation statements)

References 8 publications

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“…CFD analysis of engine combustion chamber and Simulink analysis using single-zone zero-dimensional model was done by Chaudhari et.al. The results of simulations were validated with experimental results and found in good agreement with the simulations [20].…”

Section: Introductionsupporting

confidence: 68%

Influence of Ethanol-Gasoline Fuel Fractions on Variable Compression Ratio Engine

Hatte*¹,

Bhalerao²

2019

IJRTE

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Increase in demand of ethanol as blending fuel with gasoline is increasing. For noting the performance of the engine, experimentations are required to be done on engine, fuelled with various percentages of ethanol in gasoline. In this study, fuel fractions of ethanol and gasoline were taken for observing the performance of spark ignition engine. One-cylinder gasoline engine was used for conducting the experiments and to analyse the effects of ethanol-gasoline fuel fraction on performance of the engine. The engine was tested at Full Open Throttle condition. The load on the engine was changed by changing the load on Eddy Current Dynamometer to vary the engine speed from 1300 to 1700 rpm in the interval of 100 rpm. Gasoline is blended with ethanol to make five fuel fractions from 0 % ethanol (E0) to 40 % ethanol (E40) in gasoline at the interval of 10% by volume. Engine performance was observed at various Compression Ratio (CR) of the engine as 7,8,9 and 10. Calorific Value (CV) of the fuel fractions observed decreasing from E0 to E40 as CV of ethanol is less than base gasoline. Increase in Brake Specific Fuel Consumption was not very significant with rise in ethanol percentage. Power outputs in terms of Brake Power (BP) was increasing with increase in speed of the engine and observed decreasing with increase in ethanol percentage at constant CR. However various engine output parameters like BP, Mechanical Efficiency found decreasing with increase in fuel fractions ratio. Brake Thermal Efficiency (BTE) was observed decreasing with increase in fuel fractions. However, BTE was observed increasing with increase in CR.

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Section: Introductionsupporting

confidence: 68%

Influence of Ethanol-Gasoline Fuel Fractions on Variable Compression Ratio Engine

Hatte*¹,

Bhalerao²

2019

IJRTE

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“…This differences is expected as port flow closely resembled the flow bench in term of setup and boundary condition where engine is hold static at each critical point [3,5,12]. Meanwhile, cold flow simulation deals with the tremendous change of parameters during transition from one critical point to another, thus causing more losses in induced flow for moving simulation [5,6]. Even though the deviation is big, the tabulated trend shows that cold flow simulation can be used to investigate the trend and predict the lower limit for the flow coefficient.…”

Section: Resultsmentioning

confidence: 99%

“…Eventhough the large deviation causes the difficulties to accurately predict the real breathing parameter value, the similarities in trend shows that cold flow can be used to predict the trend of discharge coefficient and the lower limit of this breathing parameter. As discharge coefficient is closely related to flow coefficient and only differs in term of referred valve area, it is also deduced that the differences of data obtained is because there is more losses in the valve movement from lower valve lift to high valve lift in cold flow moving simulation [5,6] compared to port flow engine simulation where losses in volume flow rate is measured at static critical point [3,5,12]. In a similar manner to flow coefficient data, repeated simulation shows that discharge coefficient is more precise at 1-4mm valve lift, thus cold flow simulation is suitable for the prediction of trend and lower limit at lower valve lift value.…”

Section: Resultsmentioning

confidence: 99%

“…The complex-problem solving capability of the CFD simulation is emphasised more in the analysis of engine by Chaudhari et.al [6], Morauszki et.al [7] and Schmidt et.al [8]. Injection of fuel and combustion were reflected close to reality in the research where it is proven that CFD simulation is superior in engine analysis with respect to time and cost optimization.…”

Section: Introductionmentioning

confidence: 99%

“…Injection of fuel and combustion were reflected close to reality in the research where it is proven that CFD simulation is superior in engine analysis with respect to time and cost optimization. In the research done by Chaudhari et.al [6] , analysis on a 2-dimensional spark ignition engine with the validation of experiment and zero-dimensional simulation had proven that deviation of data is larger at high engine speed compared to low one. Meanwhile, Morauszki et.al [7] had used CFD to provide greater details on the visualization of flow in engine, mixing, injection and combustion occurred in gasoline engine aided with fuel direct injection.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Steady flow and dynamic analyses comparison of an air intake breathing capacity

et al. 2016

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Abstract. Analysis of intake breathing capacity is important in order to determine the performance output for any respective engine. Flow coefficient and discharge coefficient are the common parameters used to define the breathing capability and different analysis have been applied by researchers to determine these parameters which include experiments and Computational Fluid Dynamics (CFD) analyses. This study aims to investigate the difference in breathing parameters obtained from steady flow simulation and dynamics simulation. Proton CAMPRO 1.6-litre engine was selected as the reference engine in this study. The experiment involved was the flow bench test, while CFD simulation carried out were the port flow analysis (steady flow) and the cold flow analysis (dynamics). Results obtained indicate that flow coefficient and discharge coefficient from cold flow simulation are always lower than both parameter values obtained from port flow simulation and experiment with large deviations of minimum 15.6% and maximum 27%. Meanwhile, the breathing parameter values from port flow simulation were very close to the experimental data with the minimum deviation of 1.6%. This study concludes that port flow simulation is very accurate for the analysis of defining intake breathing capacity, meanwhile cold flow simulation can be used to predict the trend and lower limit of these parameters especially at low valve lift.

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