IC INTERNAL COMBUSTION ENGINES


Combustion, also known as burning, is the basic chemical process of releasing energy from a fuel and air mixture. In an internal combustion engine (ICE), the ignition and combustion of the fuel occurs within the engine itself. The engine then partially converts the energy from the combustion to work.

An internal combustion engine is a heat engine in which the combustion of a fuel occurs with an oxidizer in a combustion chamber that is an integral part of the working fluid flow circuit.

Effective vibration analysis of ic engines using cyclostationarity. part ia methodology for condition monitoring
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Condition monitoring of IC engines through the analysis of their vibrations has been recognized to be a difficult issue, essentially because of the complexity of the signals that are involved. This paper introduces an original approach which explicitly takes into account

Homogeneous charge compression ignition: the future of IC engines
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ABSTRACT The Homogeneous Charge Compression Ignition Engine, HCCI, has the potential to combine the best of the Spark Ignition and Compression Ignition Engines . With high octane number fuel the engine operates with high compression ratio and lean mixtures

Large-eddy simulation for the prediction of aerodynamics in IC engines
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In this paper, large-eddy simulation techniques are used to predict aerodynamics through diesel engine intake ports under steady-flow conditions. For the first test case, swirling flows are investigated through an axisymmetric sudden expansion. The LES swirl profile predicted

Endoscopic 2D-PIV flow field measurements in IC engines
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The paper describes camera and laser endoscopes designed for PIV applications like measurements in IC engines or turbomachinery. Endoscopic PIV measurements through 8mm optical access on an IC engine are presented and compared with the measurements

Enhanced Ignition for IC Engines With Premixed Charge
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The development of lean charge, fast burn engines depends crucially on enhanced ignition, since one can obtain thereby proper means for increasing the rate of burn in mixtures characterized notoriously by low normal burning speeds. Enhanced ignition involves not

A moving mesh strategy to perform adaptive Large Eddy Simulation of IC engines in OpenFOAM
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The paper focuses on a mesh moving method based on non-conformal topologically changing grids for Adaptive Large Eddy Simulation of IC engines in OpenFOAM. With respect to authors previous work, a more efficient algorithm to handle the connectivity of non

Design and Development of Camless Valve Train for IC Engines
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An indispensable mechanism in the valve train of an internal combustion engine, right from the one developed by Nicolas August Otto (in 1876) to the present one, is the cam and follower mechanism. For years, many ideas have been proposed on alternative valve trains

2D-LIF investigation of hot spots in the unburnt end gas of IC engines using formaldehyde as a tracer
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It is generally accepted that autoignition in SI engines starts in distinct areas of the end gas- the so-called hot spots . The latter are caused by inhomogeneities in temperature and/or in charge distribution. This paper reports on experiments in a modified one cylinder two-stroke

Formulation of novel bio based tri fuel for IC Engines
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The present study focused on non-petroleum renewable and non-polluting fuels to be used for IC engines . The tri-fuel is assortment of diesel, turpentine blend and acetylene gas. The acetylene gas is produced from the lime stone (caco3) and the turpentine oil obtained from

Bio-diesel as a fuel in IC engines A review
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The rapidly increasing consumption of fossil fuel and petroleum products has been a matter of concern for the many countries which imports more crude oil. Because it causes huge foreign exchange out-go on the one hand and increasing exhaust emission on the other

Time-and space characterization of multi-hole GDI sprays for IC engines by images processing and PDA techniques
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BACKGROUND The gasoline direct injection (GDI) in spark ignition engines is a promising way to improve simultaneously fuel economy and performances. GDI engines have been introduced over the last years into the European market and operate in two different mixture

Miniaturization limits of small IC engines
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Considerable effort has been devoted in recent years to building miniature heat engines as battery replacements and prime-movers for micro-air vehicle propulsion. Simple thermodynamic analyses show that as a heat engine is miniaturized, it becomes less

Emission Reduction of IC engines by using water-in-diesel emulsion and catalytic converter
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IC engines , exhausting gaseous emissions and particulate matter, have long been regarded as one of the major air pollution sources, particularly in metropolitan areas and their extensive use throughout the world has called for better methods to curb these effects. Major

Acoustical source characterisation of automotive IC engines : further developments of the substitution monopole technique
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In the recent years two experimental source reconstruction methods received special attention, the inverse method and the power-based source reconstruction method. The two techniques were investigated in depth at CRF for a 1.9 common rail Diesel engine. First the

Failure of piston in IC engines : A review
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Piston in the internal combustion ( IC ) engine is robust, dynamically loaded tribo-pair that reciprocates continuously at varying temperature. Study has been made by various researchers on piston design, dynamics, fatigue and wear at the interface with other element

Design of intake manifold of IC engines with improved volumetric efficiency
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In todays world, major objectives of engine designers are to achieve the twin goals of best performance and lowest possible emission levels. Excellent engine performance requires the simultaneous combination of good combustion and good engine breathing. Whilst good

Vibration signal processing of piston slap and bearing knock in IC engines
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Piston slap and big-end bearing knock are common mechanical faults in IC engines . Detecting these faults in the initial stage from the measured vibration signals is a viable and economical method to avoid catastrophic failure of the engines . However, IC engines often

Performance analysis of IC engines with bio-diesel jatropha methyl ester (JME) blends
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Petroleum products resources are limited and their consumption rate is increasing very fast with technological development since the last two decades. The emissions from the usage of these petroleum products pollute the environment considerably. Jatropha oil is one of the

Laser ignition system for IC engines
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Nowadays, combustion engines and other combustion processes play an overwhelming and important role in everyday life. As a result, study of ignition of combustion processes is of great importance. In most cases, a well-defined ignition location and ignition time is