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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13 Oct 201432 citations
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TL;DR: In this paper, a single-stage pressure reducer was selected as an LPG evaporator, to take advantage of an additional pre-heating of the liquid LPG that allows higher power output than a two-stage device of the same size.
32 citations
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TL;DR: In this paper, a 1D thermo-fluid dynamic simulation code for the simulation of a hydrogen fuelled S.I. engine has been developed; in particular, a quasi-D multi-zone combustion model has been enhanced to predict the burning rate of a homogeneous mixture of hydrogen and air, on the basis of an extended database for laminar burning velocities.
32 citations
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TL;DR: In this article, the effects of fuel/air non-uniformity and residual gas/fresh charge non-iformity on the flame development process and combustion rate were investigated under the conditions of light loads and low speed.
Abstract: For some time, spatial nonuniformities in the unburned mixture within a spark ignition engine have been suspected of contributing to cycle-by-cycle variations in combustion. In this work, and experimental structure has been developed that allowed the effects of fuel/air nonuniformity and residual gas/fresh charge nonuniformity to be separately addressed, with special regard given to their impact on the flame development process and combustion rate. Under the conditions of light loads and low speed, it was found that a decrease in fuel-air nonuniformity caused a slight reduction in the variation of the early flame development angle but had no significant impact on the statistics of the main combustion phase of IMEP. Eliminating residual gas nonuniformity by skip firing the engine and adding equivalent residual to the fresh mixture prior to entry to the cylinder had no detectable impact on the flame development process. In fact all evidence showed that the in-cylinder residual gas present under the continuous-firing conditions tested was well mixed with the fresh charge by the time of spark discharge.
31 citations
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TL;DR: In this article, the authors evaluated the combustion characteristics and emissions of a two-stroke direct injection spark-ignition (DISI) engine under various compression ratios with aviation kerosene (RP-3) as fuel.
31 citations