Topic
Spark-ignition engine
About: Spark-ignition engine is a research topic. Over the lifetime, 4352 publications have been published within this topic receiving 66550 citations.
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TL;DR: In this article, the potential of exhaust gas recycle in a downsized, turbocharged spark-ignition engine has been extensively analyzed, at different speed and load, and the most severe conditions for knock onset have been investigated.
45 citations
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TL;DR: In this article, the effect of spark plug position on the combustion and emission characteristic of a hydrogen-fueled Wankel rotary engine under 1500 r/min, 66 kPa manifold absolute pressure and 1.5 excess air ratio was investigated.
45 citations
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TL;DR: In this paper, a modified dual fuel spark ignition engine was used to study the performance of port injection of ethanol and direct injection of gasoline surrogates (toluene reference fuel).
45 citations
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TL;DR: In this article, the mechanism of forming toxic emissions in spark ignition engines is expounded on basis of the theory of chemical dynamics of combustion and the experimental investigation results of restraining toxic emissions are introduced.
45 citations
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TL;DR: Ratcliff et al. as mentioned in this paper examined the impact of high octane number oxygenates on the performance of a single-cylinder direct-injection spark-ignition engine.
Abstract: Several high octane number oxygenates that could be derived from biomass were blended with gasoline and examined for performance properties and their impact on knock resistance and fine particle emissions in a single cylinder direct-injection spark-ignition engine. The oxygenates included ethanol, isobutanol, anisole, 4-methylanisole, 2-phenylethanol, 2,5-dimethyl furan, and 2,4-xylenol. These were blended into a summertime blendstock for oxygenate blending at levels ranging from 10 to 50 percent by volume. The base gasoline, its blends with p-xylene and p-cymene, and high-octane racing gasoline were tested as controls. Relevant gasoline properties including research octane number (RON), motor octane number, distillation curve, and vapor pressure were measured. Detailed hydrocarbon analysis was used to estimate heat of vaporization and particulate matter index (PMI). Experiments were conducted to measure knock-limited spark advance and particulate matter (PM) emissions. The results show a range of knock resistances that correlate well with RON. Molecules with relatively low boiling point and high vapor pressure had little effect on PM emissions. In contrast, the aromatic oxygenates caused significant increases in PM emissions (factors of 2 to 5) relative to the base gasoline. Thus, any effect of their oxygen atom on increasing local air-fuel ratio was outweighed by their low vapor pressure and high double-bond equivalent values. For most fuels and oxygenate blend components, PMI was a good predictor of PM emissions. However, the high boiling point, low vapor pressure oxygenates 2-phenylethanol and 2,4-xylenol produced lower PM emissions than predicted by PMI. This was likely because they did not fully evaporate and combust, and instead were swept into the lube oil. CITATION: Ratcliff, M., Burton, J., Sindler, P., Christensen, E. et al., \"Knock Resistance and Fine Particle Emissions for Several BiomassDerived Oxygenates in a Direct-Injection Spark-Ignition Engine,\" SAE Int. J. Fuels Lubr. 9(1):2016, doi:10.4271/2016-01-0705. 2016-01-0705 Published 04/05/2016 Copyright © 2016 SAE International doi:10.4271/2016-01-0705 saefuel.saejournals.org 59 NREL/CP-5400-65398. Posted with permission. Presented at the SAE 2016 World Congress & Exhibition, 12-14 April 2016, Detroit, Michigan.
45 citations