Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 29 for “"four-stroke"”.
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Fuel economy of a turbocharged, single-cylinder, four-stroke engine
… farming equipment is by using a single-cylinder, four-stroke diesel engine. Diesel engines can be turbocharged in order to make them more efficient for less cost. A method has been found to turbocharge a single-cylinder diesel engine by adding an air capacitor to form a buffer between the intake …
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A methodology for turbocharging single cylinder four stroke internal combustion engines
… a method for turbocharging single cylinder four stroke internal combustion engines, a model used to evaluate it, an experimental setup used to test it, and the findings of this experiment. A turbocharged engine has better fuel economy, cost efficiency, and power density than an equivalently …
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Pretreatment of Small Four-Stroke Engine Components for No-Oil Hot Tests
"Hot-tests" form a vital facet towards the end of the production line of modern automotive plants, where the condition of the engine is checked by running it for a short period of time, to ensure its performance under standard operating conditions. The duration of hot-tests for small engines varies …
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Reverse-engineering and restoration of a four stroke single cylinder universal fisherman marine engine
To understand the inner workings of a 4-stroke engine and all of its components, a complete computer aided design (CAD) model was created of a historic marine engine. The parts were cleaned, measured, modeled in CAD and assembled. To ensure longevity of the rebuilt engine, original parts were …
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Numerical models for the assessment of the cylinder-kit performance of four-stroke internal combustion engines
Thesis (Ph. D.)--Michigan State University. Mechanical Engineering, 2009
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Engines, their tuning, ignition systems, and maintenance : A dissertation submitted in partial fulfilment of the Diploma in Farm Management at Lincoln College
… - Circuits - Ignition coil - Polarity - Tuning a four stroke water-cooled motor - Ballast resistors - The dwell meter - Care & maintenance of diesel engines - Injector faults - Fault finding.
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Investigation of alternative rotorcraft powerplant configurations for improving airframe performance
… and diesel piston engines, operating in both four- and two- stroke modes, were considered as alternative configurations and were evaluated using industry trends and example engine data. Additionally, the two/four-stroke switching gasoline engine (changing operation mode between two- and …
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Numerical Solutions for Two- and Three-Dimensional Non-Reacting Flowfields in an Internal Combustion Engine
… ignition internal combustion engine during the four-stroke (intake, compression, power, exhaust) cycle is considered. Only fluid-dynamic effects are treated with combustion simulated by constant- volume heat addition near top-dead-center on the compression stroke. The working fluid is assumed to …
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25cc HCCI engine fueled with Diethyl Ether
… with surprising ease and flexibility. A 25cc, four-stroke, single cylinder Honda GX25 engine, possessing 2-valves with an overhead cam and separate oil sump lubrication system was used. This research aimed to provide insight with respect to which engine characteristics such as size, heat …
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Propulsion devices for locomotion at low-Reynolds number
… was found to travel up to 0.034 body lengths per four-stroke cycle, Robosnail 1 was found to move at a speed of roughly half the wave speed of the foot (measured with respect to the snail), a result consistent for wave speeds between 0 and 2 cm/s. Robosnail 2 was able to move forward at all …
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Exergy Based SI Engine Model Optimisation. Exergy Based Simulation and Modelling of Bi-fuel SI Engine for Optimisation of Equivalence Ratio and Ignition Time Using Artificial Neural Network (ANN) Emulation and Particle Swarm Optimisation (PSO).
… (EBSIEMO) is studied and evaluated. A four-stroke bi-fuel spark ignition (SI) engine is modelled for optimisation of engine performance based upon exergy analysis. An artificial neural network (ANN) is used as an emulator to speed up the optimisation processes. Constrained particle …
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Development of guidelines for exhaust system design from fundamental gas dynamics studies
… and the gas exchange process in reciprocating four-stroke engines. The study was conducted in four phases. In the first phase, an extensive experimental programme was undertaken, during which key engine performance indicators together with exhaust and intake system manifold pressure and …
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As I sow, so shall you reap: The different roles of different gestures in knowledge construction
… The instructional video was about how a four stroke engine works. Except for a type of gestures that a speaker used, both videos were identical in all conditions. Participants were told that after watching the video they would explain a concept in the video to a colleague coming later, …
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Studio e sviluppo di un motore a 2 tempi diesel veloce di nuova concezione per applicazioni automobilistiche
… 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, and improving pollutant emissions at partial load. The present work is focused on the analysis of the …
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Emissions testing of two recreational marine engines with water contact in the exhaust stream
… operation on water quality, a MerCruiser 3.0LX four-cylinder four-stroke inboard engine and a Mercury 650 two-cylinder two-stroke outboard engine were tested using EPA required certification procedures. Both engines were tested with exhaust gas/cooling water mixing (scrubbing) in the exhaust …
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Further studies of unsteady gas flow in the manifolds of multi-cylinder automobile engines
… flow regions in the manifolds of a carburetted, four-stroke, automotive engine. The unsteady flow calculation is effected by the method of characteristics under the assumption of one-dimensional, compressible fluid flow. A quasi-steady approach is adopted for the analysis of flow at restrictions …
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