Results 231 to 240 of about 642,264 (278)

High Efficiency Stoichiometric Spark Ignition Engines

SAE Technical Paper Series, 1994
<div class="htmlview paragraph">Nowadays most passenger cars are equipped with spark ignition engines with a three way catalyst. Thus, the improvement of fuel consumption of this type of engine represents a very attractive goal. In fact, it may cause a reduction of pollutant emission, and simultaneously, it may give a contribution to the lowering
De Petris C, Diana S, Giglio V, Police G
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Spark Ignition Engine Progress

SAE Technical Paper Series, 1967
<div class="htmlview paragraph">A review of past development progress, the basic engine design problem, and the design status of today's engine indicates that the continued development of the four cycle, reciprocating piston, spark ignition automobile powerplant means continued improvements and the creation of a more difficult task for possible ...
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Nonlinear torque control of a spark-ignited engine

2006 American Control Conference, 2006
A nonlinear state space controller for the optimal torque of a spark-ignited engine is proposed. The controller design is based on feedback linearization in combination with pole placement. The resulting controller basically compensates the intake manifold filling dynamics and thus improves tracking performance of torque demand changes generated by the
Abid Ali, Jan Peter Blath
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Parametric Detectors for Knock in Spark Ignition Engines

1990
The efficiency of spark ignition engines, the favoured engine of today’s passenger cars, can be improved by an increase of its compression ratio. However, for high compression ratio engines the angle of ignition for minimum fuel consumption lies in a region where knock occurs.
Thomas M. Bossmeyer, Johann F. Böhme
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Teaching the spark ignition engine

Education + Training, 1971
A proper understanding of the principles of the spark ignition engine must include an appreciation of the effect of variation in compression ratio; a practical difficulty in achieving this result has for long been the very high cost of variable compression ratio engines, most of which have been primarily intended for industrial use in oil company ...
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Combustion in Spark-ignition Engines

1990
Later chapters in this book will discuss the origins of the fluid motions that occur within combustion chambers of spark-ignition engines, the fundamentals of the combustion process itself and some of the mathematical modelling of this process that has been carried out—all essentially looking at combustion from the inside. The aim of this chapter is to
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Heavy-Duty Spark Ignition Engines Fueled With Methane

Journal of Engineering for Gas Turbines and Power, 1991
Pollution reduction in urban areas is a major driving force to upgrade mass transportation systems. Options to the urban planner include electric traction and combustion engine upgrade. Electric traction centralizes the emission source, usually removed from urban areas, but requires substantial capital costs and lead time for the transportation ...
Gambino M, Iannaccone S, Unich A
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Modelling, simulation and predictive control of a spark ignition engine

International Journal of Modelling, Identification and Control, 2008
Present-day spark ignition engines for the automotive industry are equipped with a number of actuators, such as the Electronic Throttle (ET), the Exhaust Gas Recirculation (EGR) and the Variable Valve Timing (VVT), which must be properly used to guarantee driveability and reduce fuel consumption and pollutant emissions.
G. LORINI, MIOTTI, ALESSANDRO, SCATTOLINI, RICCARDO   +2 more
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Hydrocarbon Emissions from Spark-Ignition Engines

2009
To contrast the phenomenon of HC formation in a Diesel and a spark ignition engine, a chapter is included on the latter. The absorption and desorption of fuel by cylinder lubricating oil films has been modelled using principles of mass transfer in this Chapter.
P. A. Lakshminarayanan, Yogesh V. Aghav
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TURBULENCE AND TURBULENT COMBUSTION IN SPARK-IGNITION ENGINES

Progress in Energy and Combustion Science, 1976
Publisher Summary The turbulent flow field in an engine plays an important role in determining its combustion characteristics and thermal efficiency. The details of the turbulence structure in the engine are needed for determining heat transfer rates, ignition delay times, minimum ignition energy, and the rate of mixing and burn-up of quench layers ...
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