1)Main
machinery
On
a ship , the engine room , or ER, is the propulsion machinery spaces of
the vessel . To increase the safety and damage survivability of a
vessel, the machinery necessary for operations may be segregated into
various spaces. The engine room is one of these spaces, and is
generally the largest physical compartment of the machinery space.
The engine room houses the vessel's prime mover, usually some
variations of a heat engine - diesel engine, gas or steam turbine . On
some ships, the machinery space may comprise more than one engine
room, such as forward and aft, or port or starboard engine rooms , or
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Tartus secondary school of business Nuclear Power Helena Nulk form 11b Tartu 2009 Table of contents Introduction..........................................................................................................................................3 What is nuclear power?....................................................................................................................3 Nuclear life cycle.............................................................................................................................3 What is nuclear energy?...................................................................................................................3 What is nuclear fusion?....................................................................................................................4 What is nuclear fission?..................................
Since the invention of the internal combustion engine, automotive engineers, speed junkies and racecar designers have been searching for ways to boost its power. One way to add power is to build a bigger engine. But bigger engines, which weigh more and cost more to build and maintain, are not always better. Another way to add power is to make a normal-sized engine more efficient. You can accomplish this by forcing more air into the combustion chamber. More air means more fuel can be added, and more fuel means a bigger explosion and greater horsepower. A turbo/supercharged engine produces more power overall than the same engine without the charging. Both superchargers and turbochargers do this. The difference between the two devices is their source of energy . TURBOCHARGER When people talk about race cars or high-performance sports cars, the topic of turbochargers usually comes up. Turbochargers also appear on large diesel engines. A turbo can significantly boost an engine's horsepowe
ahtrilainete süsteem stern wave system different trim dünaamilise tõstejõuga laev dynamically supported ship erikaal specific weight Froude arv Froude number gravitatsiooniline takistus gravity-related resistance hõõrdetakistus frictional resistance hõõrdetegur coefficient of friction koosmõju interaction hürdodonaamiline rõhk hydrodynamical pressure hüdromehaanika fluid mechanics hürdrostaatiline rõhk hydrostatical pressure
Two-Stroke TUNER’S HANDBOOK By Gordon Jennings Illustrations by the author Copyright © 1973 by Gordon Jennings Compiled for reprint © 2007 by Ken i PREFACE Many years have passed since Gordon Jennings first published this manual. Its 2007 and although there have been huge technological changes the basics are still the basics. There is a huge interest in vintage snowmobiles and their “simple” two stroke power plants of yesteryear. There is a wealth of knowledge contained in this manual. Let’s journey back to 1973 and read the book that was the two stroke bible of that era. Decades have passed since I hung around with John and Jim. John and I worked for the same corporation and I found a 500 triple Kawasaki for him at a reasonable price. He converted it into a drag bike, modified the engine completely and added mikuni carbs and tuned pipes. John borrowed Jim’s cop
Engine 1. Distribution of weight Raskuse jaotamine 2. Belt Rihm 3. Chain Kett 4. To keep breaking Pidevalt katkema 5. Effort Jõupingutus 6. Currently Käesoleval ajal 7. Option Valik 8. Advantage Eelis 9. All-wheel-drive Täisvedu / nelivedu 10. To power Tööle panama 11. To control Kontrollima 12. Interrelationship Tihe seos 13. Power plant Jõuseade 14. Power train Jõuülekandesüsteem 15. Power transmission Jõuülekanne 16. Running gear Veermik 17. Control system Juhtsüsteem 18. Subsystem Allsüsteem 19. Fuel system Toitesüsteem 20. Exhaust system Väljalaskesüsteem 21. Lubrication system Õlitussüsteem 22. Cooling system Jahutussüsteem 23. Drive system veosüsteem 24. Clutch sidur 25. Differential Diferentsiaal 26. Drive shaft Veovõll 27. Suspension vedrustus 28. Shock absorber Amortisaator 29. Support system Tugisüsteem 30. Steering system juht
Märt Leppik AT13 17.09.09 Comparison of diesel and petrol engine Similarities Both engines have a similar combustion cycle. The cycle is four strokes long. The strokes are the intake stroke, the compression stroke, the combustion stroke, and the exhaust stroke. During the intake stroke, the piston moves down in time with the opening of the intake valve. This allows the cylinder to become full of an air and gas mixture. This mixture is compressed during the compression stroke, which increases the compression pressure at which the gas mixture will be ignited, or self-ignited. The combustion stroke is the stroke following the explosion of the mixture, and this stroke is what powers the car. It is this stroke that powers the crankshaft, and allows for the car to move. The final stroke is the exhaust stroke. The exhaust valve opens when the piston hits the bottom, and the piston pushes the exhaust out. Both engines also have camshafts, which operate the opening and closing o
SISUKORD ENERGY STORY................................................................................................................4 USES OF ENERGY............................................................................................................. 4 2.1 Uses of energy in homes...............................................................................................5 2.2 Types of energy used in homes.................................................................................... 6 2.3 Energy use in different types of homes........................................................................ 6 2.4 Commercial Energy Use...............................................................................................9 2.5 Industrial and Manufacturing Energy Use..................................................................11 2.6 Transportation Energy Use.........................................................................................12 RENE
If the engine has been stopped for 30 minutes or more, it is advisable to slow-turn the engine. On large engines a slow-turning valve (8) bypasses the main starting valve and will supply just enough air to rotate the engine slowly. Excessive pressure in the starting air system is released by the safety valve (9), incorporated in the line. FUEL OIL SYSTEM The fuel oil is normally stored in the bottom tanks of the ship. The bottom tanks are provided with filling and discharge pipes. As a rule, bunker oils are delivered at a temperature of 50-60ºC in order to make pumping easier. The bottom tanks are provided with sounding equipment for checking the amount of oil in the tanks. Sounding can always be carried out by using a dipstick. If the engine uses heavy fuel oil, the bottom tanks must have heating coils, because the viscosity of the oil is often so high that the transfer pump is unable to suck the
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