Cycle-to-Cycle Fluctuations in a Spark Ignition Engine at Low Speed and Load
نویسندگان
چکیده
منابع مشابه
Cycle-to-cycle Fluctuations of Burned Fuel Mass in Spark Ignition Combustion Engines
We examine a simple, fuel-air, model of combustion in spark ignition (si) engine with indirect injection. In our two fluid model, variations of fuel mass burned in cycle sequences appear due to stochastic fluctuations of a fuel feed amount. We have shown that a small amplitude of these fluctuations affects considerably the stability of a combustion process strongly depending on the quality of a...
متن کامل3 M ay 2 00 4 A Numerical Study of a Simple Stochastic / Deterministic Model of Cycle - to - Cycle Combustion Fluctuations in Spark Ignition Engines
We examine a simple, fuel-air, model of combustion in spark ignition (si) engine with indirect injection. In our two fluid model, variations of fuel mass burned in cycle sequences appear due to stochastic fluctuations of a fuel feed amount. We have shown that a small amplitude of these fluctuations affects considerably the stability of a combustion process strongly depending on the quality of a...
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We study the energetic functions obtained in a simulated spark-ignited engine that incorporates cyclic variability through a quasi-dimensional combustion model. Our analyses are focused on the effects of the fuel-air equivalence ratio of the mixture simultaneously over the cycle-to-cycle fluctuations of heat release (QR) and the performance outputs, such as the power (P ) and the efficiency (η)...
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An experimental study is carried out to investigate engine performance parameters and methods of reducing emissions from spark ignition engine. Fuel efficiency is one of the major concerns for the users, the designers and the manufacturers of internal combustion (IC) engines, The effect of increasing the temperature of cylinder liner has the advantage of reducing the specific fuel consumption b...
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an s-curve to describe the gradual transition between exhaust pressure and intake or inlet pressure. The start of compression, which marks the end of the intake process, does not necessarily occur at the same time as the close of the intake valve (IVC). The intake valve closes after bottom center (BC) while the volume in the cylinder is decreasing. The engine speed determines the point at which...
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ژورنال
عنوان ژورنال: Journal of Energy Engineering
سال: 2013
ISSN: 1598-7981
DOI: 10.5855/energy.2013.22.2.205