Showing papers on "Spark-ignition engine published in 2018"
TL;DR: A systematic review of oxygenated fuels including alcohol and ether regarding the production, environmental impacts and potential using as octane booster of gasoline that used in spark ignition SI) engine is presented in this article.
Abstract: Oxygenated fuels such as alcohols and ethers have the potential to provide reliable sources, and environmentally friendly fuel to world's increasing future energy demands. Oxygenated fuels have a promised future since are renewable and produced from several sources, also can be produced locally. The first objective of this paper is to systematically review of oxygenated fuels including alcohol and ether regarding the production, environmental impacts and potential using as octane booster of gasoline that used in spark ignition SI) engine. Another objective of this paper is to review the effects of oxygenated fuels on performances and emissions characteristics of spark ignition engine. Alcohol and ether burn very cleanly than regular gasoline and produce lesser carbon monoxide (CO) and nitrogen oxides (NOx). Mainly the ether fuels (methyl tertiary butyl ether MTBE and Dimethyl Ether DME) are used as additives at low blending ratio to enhance the octane number and oxygen content of gasoline. Furthermore, alcohols and ethers have significant impacts on the environment, greenhouse gas and human health. In addition to this, application of oxygenated fuel on SI engines can decrease environmental pollution, strengthen agricultural economy and decrease gasoline fuel requirements. The increase in engine performance could be attained with an increased compression ratio along with the use of alcohol fuels which have a higher-octane value. Overall, oxygenated fuels have been found to be a very promising alternative fuel for SI engines, capable of providing high thermal efficiency, and lower NOx levels.
80 citations
TL;DR: In this article, an experimental evaluation of a spark-ignition (SI) engine fueled with water-containing IBE-gasoline blends was carried out in a stoichiometric condition.
79 citations
TL;DR: In this paper, the potential of ABE and IBE as fuel candidate in spark ignition (SI) engine was compared and it was found that IBE-gasoline blends showed an advanced combustion phasing with a shorter initial and major combustion duration compared to gasoline and ABE-gasolina blends.
78 citations
TL;DR: In this article, the effects of HHO enrichment on engine performance and emissions in compressionignition and spark-ignition engines have been examined in detail, and it is found from the experiments that plate type reactor with NaOH produced more HHO gas with the same amount of catalyst and electric energy.
68 citations
TL;DR: In this article, an experimentally validated KIVA4-based CFD simulation integrated with CHEMKIN was performed to evaluate engine performance fuelled by syngas and biogas under both single and blended-fuel modes.
66 citations
TL;DR: In this paper, an Artificial Neural Network (ANN) method was used to estimate the thermal efficiency (TE), brake specific fuel consumption (BSFC) and volumetric efficiency (VE) values of a biogas engine with spark ignition at different methane (CH4) ratios and engine load values.
58 citations
TL;DR: In this paper, the authors investigated a total of seven fuels in a spark ignition engine under boosted operating conditions to determine whether knock propensity is predicted by fuel antiknock metrics: antiknik index (AKI), research octane number (RON), and octane index (OI).
56 citations
TL;DR: In this article, six types of fuel blends consisting of ethanol and isobutanol were mixed with gasoline at different volume rates and were tested on a four-cylinder spark ignition engine by varying the engine speeds and engine torques to evaluate their engine performance and exhaust emissions characteristics.
53 citations
TL;DR: In this paper, experiments were conducted on a four-cylinder spark-ignition engine to investigate the effects of iso-butanol additives in ethanol-gasoline blend on fuel properties, performance and emission characteristics of a SI engine.
53 citations
TL;DR: In this paper, a comparative investigation was conducted on a turbocharged direct-injection spark-ignition engine fuelled with gasoline and ethanol blend, and the results indicated that 50% combustion position was slightly shifted to TDC and 10-90% combustion duration was shortened by using TSIS modes as compared with SI mode.
52 citations
TL;DR: In this paper, the exhaust noise, performance and emission characteristics of a gasoline engine fuelled by hydrous ethanol gasoline with 10%, 20% Hydrous ethanol by volume (E10W and E20W) and pure gasoline (E0) were experimentally investigated.
TL;DR: In this article, the effect of variable valve overlap on the in-cylinder exhaust residuals and toxic emissions was investigated in a natural gas-fuelled engine with variable valve timing.
TL;DR: The proposed approach, based on refined sub-models for in-cylinder phenomena description, shows the capability to predict the effects of advanced valve strategies, making the implementation of a “virtual” calibration of a VVA engine possible.
TL;DR: In this article, the effects of hydrogen-addition on the performance and emission characteristics of Methanol-Gasoline blends in a spark ignition (SI) engine were investigated, and it was concluded that hydrogen addition improves combustion process; CO and HC emissions reduce as a result of the leaning effect caused by the methanol addition.
TL;DR: In this paper, the effect of backfire and its control by varying operating parameters was analyzed on a multi-cylinder spark ignition engine fueled with hydrogen for analyzing backfire at equivalence ratio 0.82.
TL;DR: In this paper, an experimental investigation was conducted on the performance, combustion and knock characteristics of a high compression ratio, lean-burn heavy-duty spark ignition (SI) engine fuelled with n-butane and liquefied methane gas blend.
TL;DR: In this article, a single cylinder port fuel injected spark ignition engine prototype was evaluated using a variety of test fuels such as compressed natural gas, 10, 20, 30, 50, 70% and hydrogen for in-depth understanding of relative particulates and gaseous emissions, in addition to determining the engine's knocking characteristics.
TL;DR: In this article, the effect of ethanol-gasoline blends as a bio-fuel in the conventional spark-ignition engine was discussed and the merits and disadvantages of using ethanol as a fuel in Spark Ignition Engines also discussed.
TL;DR: In this article, the authors investigated the influence of compression ratio on engine performance and tailpipe emissions by using unleaded gasoline and gasoline blends with (10 and 20%) pure ethanol SI (spark ignition) engine having variable compression ratio with the air-cooled single-cylinder engine.
TL;DR: In this article, a diesel engine with a high compression ratio (CR) was converted to a spark ignition (SI) biogas engine to be fueled with gaseous fuels.
TL;DR: In this article, a study has been made of the investigations concerning stratified lean burn combustion in a wall-air guided type SI single cylinder optical research engine (SCORE) using Brazilian hydrous ethanol (E100) as fuel.
TL;DR: In this paper, an artificial neural network model was developed to predict the engine performance and exhaust emissions when a port fuel injection spark ignition engine fueled with n-butanol-gasoline blends under various equivalence ratio.
Abstract: The engine experiments require multiple tests that are hard, time-consuming, and high cost. Therefore, an artificial neural network model was developed in this study to successfully predict the engine performance and exhaust emissions when a port fuel injection spark ignition engine fueled with n-butanol–gasoline blends (0–60 vol.% n-butanol blended with gasoline referred as G100-B60) under various equivalence ratio. In the artificial neural network model, compression ratio, equivalence ratio, blend percentage, and engine load were used as the input parameters, while engine performance and emissions like brake thermal efficiency, brake-specific fuel consumption, carbon monoxide, unburned hydrocarbons, and nitrogen oxides were used as the output parameters. In comparison between experimental data and predicted results, a correlation coefficient ranging from 0.9929 to 0.9996 and a mean relative error ranging from 0.1943% to 9.9528% were obtained. It is indicated that the developed artificial neural network ...
TL;DR: In this article, the laminar burning velocity of water/ethanol/air mixtures with up to 40% water by volume was measured with a constant volume combustion vessel using two distinct techniques: imaging of the flame front during the constant pressure period and analyzing the pressure rise data.
TL;DR: In this paper, an automotive size 4-cylinder 1.4-L naturally aspirated port-fuel injection spark ignition Volkswagen engine adapted to run on hydrogen has been investigated, and three distinct methods (incylinder pressure, block-engine vibration and acoustic measurements) have been employed to detect abnormal combustion phenomena provoked through the enrichment of the hydrogen-air mixture fed to the cylinders under a wide range of engine speeds (1000-5000 rpm).
TL;DR: In this article, a high compression ratio coupled with advanced spark timings were employed to achieving intense or critical thermal-dynamic conditions to easily inducing the super-knock, which is a major obstacle for further improving the power density in SI engines.
TL;DR: In this paper, the effect of ethanol-gasoline blends as fuel on the performance and exhaust emission of a four-stroke three-cylinder spark ignition (SI) engine was investigated.
Abstract: The objective of this investigation was to find the effect of ethanol–gasoline blends as fuel on the performance and exhaust emission of a spark ignition (SI) engine. A four-stroke three-cylinder SI engine was used for this study. Performance tests were conducted for the three blends E5 (5% ethanol), E10 (10% ethanol) and E15 (15% of ethanol) as well as E0(100% gasoline) to evaluate their brake thermal efficiency, specific fuel consumption and mechanical efficiency, while exhaust emissions were also analysed for carbon monoxide (CO), hydrocarbons (HC), carbon dioxide (CO2) and oxides of nitrogen (NOx) with varying torque conditions and constant speed of the engine. The results showed that blends of gasoline and ethanol increased the brake power, brake thermal efficiency and the fuel consumption. The CO and HC emissions concentration in the engine exhaust decreased while the NOx concentration increased.
TL;DR: In this article, the equivalence ratio was kept at 0.77 and the energy input into the engine was constant, and a comprehensive evaluation of different injection modes were obtained. But, the results showed that higher injection pressure could lead to longer spray penetration distance and better atomization, but excessive direct injection pressure may cause spray wall impingement and deteriorate the engine emissions performance.
TL;DR: In this article, the impact of compression ratio (CR) on the performance, combustion and emissions of internal combustion engines (ICE) that are operated with oxygenated fuels that could potentially replace petroleum-based fuels or to improve the fuel properties.
Abstract: Energy sources are becoming a governmental issue, with cost and stable supply as the main concern. Oxygenated fuels production is cheap, simple and eco-friendly, as a well as can be produced locally, cutting down on transportation fuel costs. Oxygenated fuels are used directly in an engine as a pure fuel, or they can be blended with fossil fuel. The most common fuels that are conceded under oxygenated fuels are ethanol, methanol, butanol Dimethyl Ether (DME), Ethyl tert-butyl ether (ETBE), Methyl tert-butyl ether (MTBE) and biodiesel that have attracted the attention of researchers. Due to the higher heat of vaporization, high octane rating, high flammability temperature, and single boiling point, the oxygenated fuels have a positive impact on the engine performance, combustion, and emissions by allowing the increase of the compression ratio. Oxygenated fuels also have a considerable oxygen content that causes clean combustion. The aim of this paper was to systematically review the impact of compression ratio (CR) on the performance, combustion and emissions of internal combustion engines (ICE) that are operated with oxygenated fuels that could potentially replace petroleum-based fuels or to improve the fuel properties. The higher octane rating of oxygenated fuels can endure higher compression ratios before an engine starts knocking, thus giving an engine the ability to deliver more power efficiently and economically. One of the more significant findings to emerge from this review study was the slight increases or decreases in power when oxygenated fuel was used at the original CR in ICE engines. Also, CO, HC, and NOx emissions decreased while the fuel consumption (FC) increased. However, at higher CR, the engine performance increased and fuel consumption decreased for both SI and CI engines. It was seen the NOx, CO and CO2 emissions of oxygenated fuels decreased with the increasing CR in the SI engine, but the HC increased. Meanwhile, in CI engine, the HC, CO and NOx decreased as the CR increased with biodiesel fuel.
TL;DR: In this paper, a dual sequential spark ignition engine is separately tested either with gasoline or CNG at low and high loads, and numerical engine analyses are performed by constructing a 1-D engine model in Ricardo-Wave software.