Global ETD Search
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Showing 1 to 20 of 27 for “"ING-IND/08 Macchine a fluido"”.
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Sviluppo di algoritmi avanzati di analisi e diagnosi combustione in tempo reale per motori endotermici alternativi
Increasingly stringent exhaust emission limits and higher fuel economy are the main drivers of the engine development process. As a consequence, the complexity of the propulsion units and its subsystems increase, due to the extensive use of sensors and actuators needed to obtain a precise control …
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Sviluppo e validazione di un modello di film fluido per simulazioni CFD di motori a combustione interna
… dynamics of a liquid wall film generated by impinging sprays. Particular care has been taken in numerical implementation of the model. The major phenomena taken into account in the present model are: wall film formation by impinging spray; body forces, such as gravity or acceleration of the …
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Studio e sviluppo di un motore a 2 tempi diesel veloce di nuova concezione per applicazioni automobilistiche
The Department of Mechanical and Civil Engineering (DIMeC) of the University of Modena and Reggio Emilia is developing a new type of small capacity HSDI 2-Stroke Diesel engine (called HSD2), featuring a specifically designed combustion system, aimed to reduce weight, size and manufacturing costs, …
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Modellizzazione numerica e caratterizzazione sperimentale di macchine e componenti oleodinamici
… numerico, ai fini della modellizzazione di macchine volumetriche ad ingranaggi esterni. In particolare viene dapprima presentato un modello a parametri concentrati utilizzato per l’analisi dei fenomeni che coinvolgono l’area di ingranamento della macchina; un codice di calcolo associato al …
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In Cylinder NOx Control Technologies for Marine Diesel Engines
… CFD simulation code for a Wartsila 6 cylinder, 4 strokes, medium speed marine diesel engine, to evaluate their potential in order to reach the IMO Tier 3 NOx emissions target. By means of extreme Miller cycles, with Early Intake Valve Closures (EIVC up to 100 crank angle degrees before …
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A COMPREHENSIVE METHODOLOGY for the OPTIMIZATION of the OPERATING STRATEGY of HYBRID ELECTRIC VEHICLES
… main concerns in our society. Driven by more stringent international standards, automobile manufacturers are developing new technologies such as the Hybrid Electric Vehicles (HEVs). These innovative systems combine the main benefits of traditional Internal Combustion Engines (ICEs) with those of …
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Dynamic Programming Algorithms for Optimal Control Problems in Hybrid Electric Vehicles
L'abstract è presente nell'allegato / the abstract is in the attachment
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Advanced modelling of lubricating gaps in positive displacement machines
L'abstract è presente nell'allegato / the abstract is in the attachment
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Hybrid and Electric Vehicles Optimal Design and Real-time Control based on Artificial Intelligence
L'abstract è presente nell'allegato / the abstract is in the attachment
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High-Fidelity Computational Analysis of the Aerothermal Performance of In-serviced Jet Engine Blades
… into the continuous challenge of developing new and better design and optimization strategies. In the information age, it is only natural that a great deal of this effort is going to be carried out by means of computational analysis. That is to say, these design and optimization …
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Design Optimisation and Flow Characterisation for Future Aeroengine Axial Fan Blades
The increased need to design higher performing aerodynamic shapes has led to design optimisation cycles requiring high-fidelity CFD models and high-dimensional parametrisation schemes. The computational cost of employing global search algorithms on such scenarios has typically been prohibitive for …
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Analisi e simulazione di circuiti idraulici per macchine movimento terra
… e modellare i circuiti idraulici di due macchine movimento terra, in particolare di un telehandler e di un escavatore al fine di comprendere l’attuale soluzione circuitale e di far emergere pregi e difetti con lo scopo di mantenere i primi risolvendo i secondi. Al fine di avvalorare le …
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Experimental Investigation on Different After-treatment Technologies for the Control of Pollutant Emissions from Automotive Diesel Engines.
… (HSDI) Diesel engines are nowadays spreading in the global market of passenger cars, thanks to undoubted advantages such as higher efficiency (lower fuel consumption and CO2 emissions), drivability, durability and reliability. Increasing concerns regarding the two main pollutants from …
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A comprehensive analysis of natural gas direct injection and of mixture formation in spark ignition engines
The transportation sector is becoming increasingly linked to environmental problems, with a technology relying heavily on the exploitation of not renewable energies: the combustion of hydrocarbons in internal combustion engine (ICE). Since this is still expected to be the main technical solution to …
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Development of Innovative Methodologies to Support the Design of Connected and Electrified Vehicles
L'abstract è presente nell'allegato / the abstract is in the attachment
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Extended Momentum Model for Single and Multiple Hydrokinetic Turbines in Subcritical Flows
This thesis proposes equations extending the Free Surface Actuator Disc Theory to yield drag forces and interference factors from a series of two porous discs in open channel flows. The new model includes blockage ratio and Froude number as independent variables, which are inferred in advance to …
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Exhaust after-treatment systems modelling to develop new technologies and support ECU calibration in off-road diesel engines
L'abstract è presente nell'allegato / the abstract is in the attachment
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Comprehensive analysis of Port Water Injection as a key enabler to Hydrogen-fueled high-performance ICE operation under stoichiometric conditions
L'abstract è presente nell'allegato / the abstract is in the attachment
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