Results 221 to 230 of about 642,269 (278)

Hybrid tracking control for spark-ignition engines

Proceedings of the 39th IEEE Conference on Decision and Control (Cat. No.00CH37187), 2002
The design of a torque tracking controller for a spark ignition engine is presented. A hybrid model that describes the interacting behavior of the intake manifold, the engine, the power-train and the catalytic converter is illustrated. The proposed control is obtained by: 1) decoupling the control problem into two sub-problems; and 2) relaxing each of ...
BALLUCHI, ANDREA, BICCHI, ANTONIO, C. CATERINI, C. ROSSI, A. SANGIOVANNI VINCENTELLI   +4 more
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Combustion in a spark-ignition engine

Applied Energy, 2000
Abstract This paper describes a simple analysis for the prediction of pressure within a spark ignition engine. This is done by modelling the combustion process using the Wieb function approach, which is an exponential function in the form y=1−e−axm, to calculate the rate of fuel burned.
Z.H Kodah, H.S Soliman, M Abu Qudais, Z.A Jahmany   +3 more
openaire   +1 more source

Spark Spectroscopy for Spark Ignition Engine Diagnostics

SAE Technical Paper Series, 1995
<div class="htmlview paragraph">The light emissions from a spark discharge were observed by inserting a fibre optic cable through the centre electrode of a spark plug, to investigate the possibility of determining the fuel-air ratio in the spark gap at ignition with spectroscopy.</div> <div class="htmlview paragraph">The total ...
R. Mark Merer, James S. Wallace
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A Dynamical Instability of Spark-Ignited Engines

Science, 1984
A simple model for spark-ignited engines is proposed in which the residual exhaust gases of a combustion event affect ignition of the subsequent charge. The model is an example of a one-dimensional, discrete, nonlinear mapping of an interval. Laminar flame correlations incorporated within models for ignition exhibit Arrhenius kinetics. Small variations
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Knock in Spark Ignition Engines

SAE Technical Paper Series, 1981
<div class="htmlview paragraph">The knocking characteristics of several fuels are studied using a single cylinder test engine with variations in key engine operating parameters. Compression ratio, spark advance, fuel equivalence ratio, exhaust gas recirculation, engine speed, charge inlet pressure and charge inlet temperature were varied to yield
A. By, B. Kempinski, J. M. Rife
openaire   +1 more source

A new ignition model for spark-ignited engine simulations

Parallel Computing, 2001
The amount of spark energy deposited into the combustion chamber is key to an optimum ignition as one can end up with misfires when this energy is low or with other undesired effects on engine performance and byproducts when it is high. Experimentally, up to now, no one has been able to correlate the combustion outcome accurately to the spark ...
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POLLUTANT FORMATION AND CONTROL IN SPARK-IGNITION ENGINES

Symposium (International) on Combustion, 1975
The fundamental aspects of pollutant formation and control in spark-ignition engines are reviewed. The pollutants examined are oxides of nitrogen, unburned hydrocarbons and carbon monoxide. The engine concepts discussed are conventional carbureted spark-ignition engines, the Wankel, and different types of stratified charge engines.
openaire   +1 more source

Spark ignition engines

1985
This chapter considers how the combustion process is initiated and constrained in spark ignition engines. The air/fuel mixture has to be close to stoichiometric (chemically correct) for satisfactory spark ignition and flame propagation. The equivalence ratio or mixture strength of the air/fuel mixture also affects pollutant emissions, as discussed in ...
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The Prediction of Auto Ignition in a Spark-Ignited Engine

SAE Technical Paper Series, 1984
<div class="htmlview paragraph">A constant volume combustion simulation has been used to compute the ignition delays of pure fuels and binary fuel mixtures in air. Minima in the ignition delays were predicted by a comprehensive chemical kinetic mechanism for binary fuel mixtures with methane.
Philip M. Dimpelfeld, David E. Foster
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Lean combustion stability of spark ignition engines

Proceedings of 2003 IEEE Conference on Control Applications, 2003. CCA 2003., 2004
Literature shows that by controlling engines at extreme lean operating conditions (equivalence ratio
Pingan He 0002, Sarangapani Jagannathan
openaire   +2 more sources