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.
Papers published on a yearly basis
Papers
More filters
01 Jan 2017
TL;DR: In this article, the authors measured a time series of emission spectra from the spark discharge and initial flame kernel inside a spark-ignition engine using a spectrometer coupled with a spark plug and optical fiber.
Abstract: The spark discharge ignition process was investigated using simultaneous temperature measurements of the spark discharges and the initial flame kernel. We were able for the first time to measure a time series of emission spectra from the spark discharge and initial flame kernel inside a spark-ignition engine using a spectrometer coupled with a spark plug and optical fiber. The plasma vibrational temperature of the spark discharge can be measured using time series emission spectra from the electrically excited CN * violet band system. The gas rotational temperature of the initial flame kernel can also be measured using emission spectra from OH * radicals (P and R branches). Simultaneously, visualization of the spark discharge and a time series of emission spectra inside a spark-ignition engine were performed under homogeneous mixture conditions, to eliminate the effects of stratification of temperature and mixture concentrations around the spark plug. We discuss thermal energy transfer from the spark discharge to the combustible mixture. The main conclusions that can be drawn from this study are as follows. CN * emission can be detected from the spark discharge, visualized using a high-speed camera during the arc discharge phase. Our results confirmed that the plasma temperature of the spark discharge was nearly 6800 K and that thermal energy was transferred from the spark plasma channel to the combustible mixture. The gas temperature of the initial flame kernel approached that of the adiabatic flame temperature.
27 citations
TL;DR: In this paper, a single-cylinder optical research engine with a modern central direct injection combustion chamber and Bowditch type optical piston was used for high-speed cross-correlated particle image velocimetry.
27 citations
TL;DR: In this article, the effect of different methods of ethanol fueling on particulate matter by means of the correlation between the in-cylinder soot formation and the exhaust particle emissions was investigated in a 4-stroke small displacement optical spark ignition engine.
27 citations
TL;DR: Influence de la forme de la chambre de combustion sur le taux de combustion dans un moteur a allumage par etincelle.
Abstract: Influence de la forme de la chambre de combustion sur le taux de combustion dans un moteur a allumage par etincelle
26 citations
26 citations