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Filter this Collection| x name | x image | x article |
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| x Yield |
The yield strength or yield point of a material is defined in engineering and materials science as the stress at which a material begins to deform plastically. Prior to the yield point the material will deform elastically and will return to its...
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| x Tensile strength |
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Tensile strength (σUTS or SU ) is indicated by the maxima of a stress-strain curve and, in general, indicates when necking will occur. As it is an intensive property, its value does not depend on the size of the test specimen. It is, however,...
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| x Fatigue limit |
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Fatigue limit, endurance limit, and fatigue strength are all expressions used to describe a property of materials: the amplitude (or range) of cyclic stress that can be applied to the material without causing fatigue failure. Ferrous alloys and...
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| x Shear strength |
Shear strength in engineering is a term used to describe the strength of a material or component against the type of yield or structural failure where the material or component fails in shear.
In structural and mechanical engineering the shear...
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| x Reciprocating engine |
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A reciprocating engine, also often known as a piston engine, is a heat engine that uses one or more reciprocating pistons to convert pressure into a rotating motion. This article describes the common features of all types. The main types are: the...
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| x Rolls-Royce Merlin |
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The Rolls-Royce Merlin is a British, liquid-cooled, 27-litre (1,650 cu in) capacity, V-12 piston aero engine, designed and built by Rolls-Royce Limited. Initially known as the PV-12, Rolls-Royce named the engine the Merlin following the company...
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| x Aircraft engine |
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An aircraft engine is a propulsion system for an aircraft. Aircraft engines are almost always either lightweight piston engines or gas turbines. This article is an overview of the basic types of aircraft engines and the design concepts employed in...
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| x Diesel engine |
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A diesel engine is an internal combustion engine that uses the heat of compression to initiate ignition to burn the fuel, which is injected into the combustion chamber during the final stage of compression. This is in contrast to a petrol engine ...
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| x Internal combustion engine |
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The internal combustion engine is an engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber. In an internal combustion engine the expansion of the high temperature and pressure gases, which are...
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| x Supermarine Spitfire |
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The Supermarine Spitfire is a British single-seat fighter aircraft used by the Royal Air Force and many other Allied countries through the Second World War. The Spitfire continued to be used into the 1950s both as a front line fighter and in...
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| x Stirling engine |
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A Stirling engine is a heat engine that operates by cyclic compression and expansion of air or other gas, the working fluid, at different temperature levels such that there is a net conversion of heat energy to mechanical work.
The engine is like a...
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| x Steam engine |
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A steam engine is a heat engine that performs mechanical work using steam as its working fluid.
The idea of using boiling water to produce mechanical motion has a long history, going back about 2000 years. Early devices were not practical power...
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| x Heat engine |
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A heat engine is a physical or theoretical device that converts thermal energy to mechanical output. The mechanical output is called work, and the thermal energy input is called heat. Heat engines typically run on a specific thermodynamic cycle....
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| x Two-stroke cycle |
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A two-stroke engine is a combustion engine that completes the thermodynamic cycle in two movements of the piston compared to twice that number for a four-stroke engine. This increased efficiency is accomplished by using the beginning of the...
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| x Four-stroke engine |
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Today, internal combustion engines in cars, trucks, motorcycles, aircraft, construction machinery and many others, most commonly use a four-stroke cycle. The four strokes refer to intake, compression, combustion (power), and exhaust strokes that...
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| x Wankel engine |
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The Wankel engine is a type of internal combustion engine which uses a rotary design to convert pressure into a rotating motion instead of using reciprocating pistons. Its four-stroke cycle takes place in a space between the inside of an oval-like...
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| x Rocket engine |
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A rocket engine or simply "rocket" is a jet engine that uses only propellant mass for forming its high speed propulsive jet. Rocket engines are reaction engines and obtain thrust in accordance with Newton's third law. Since they need no external...
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| x Jet engine |
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A jet engine is a reaction engine that discharges a fast moving jet of fluid to generate thrust in accordance with Newton's laws of motion. This broad definition of jet engines includes turbojets, turbofans, rockets, ramjets, pulse jets and pump...
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| x Gas turbine |
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A gas turbine, also called a combustion turbine, is a rotary engine that extracts energy from a flow of combustion gas. It has an upstream compressor coupled to a downstream turbine, and a combustion chamber in-between. (Gas turbine may also refer...
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| x Six stroke engine |
The six-stroke engine is a type of internal combustion engine based on the four-stroke engine, but with additional complexity to make it more efficient and reduce emissions. Two different types of six-stroke engine have been developed since the...
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| x Piston |
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A piston is a component of reciprocating engines, pumps and gas compressors. It is located in a cylinder and is made gas-tight by piston rings. In an engine, its purpose is to transfer force from expanding gas in the cylinder to the crankshaft via a...
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| x Chainsaw |
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A chainsaw (or chain saw) is a portable mechanical, motorized saw. It is used in logging activities such as felling, limbing, and bucking, by tree surgeons to fell trees and remove branches and foliage, to fell snags and assist in cutting firebreaks...
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| x String trimmer |
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While properly called a "String Trimmer", it is also known as a Strimmer, string trimmer, line trimmer, Weedeater (a brandname), Weedwhacker (a brandname) or weed wacker, Weed Whip, weedy, whipper snipper (only when upsidedown), garden strimmer,...
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| x Tuk-tuk |
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The tuk-tuk (Thai: ￠ﾸﾕ￠ﾸﾸ￠ﾹﾊ￠ﾸﾁ￠ﾸﾕ￠ﾸﾸ￠ﾹﾊ￠ﾸﾁ or ￠ﾸﾕ￠ﾸﾸ￠ﾹﾊ￠ﾸﾁ￠ﾹﾆ, IPA: /ￋﾈￃﾰￊﾊkￋﾈￃﾰￊﾊk/) is the Southeast Asia version of a vehicle known elsewhere as an auto rickshaw or cabin cycle. It is a widely used form of urban transport in Bangkok and other...
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| x Bourke engine |
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The Bourke Engine was designed by Russell Bourke in the 1920s, as an improved two stroke engine. Despite finishing his design and building several working engines, the onset of World War II, lack of test results, and the poor health of his wife...
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| x Scotch yoke |
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The Scotch yoke (also spelled Scotch Yoke and scotch yoke), is a mechanism for converting the linear motion of a slider into rotational motion or vice-versa. The piston or other reciprocating part is directly coupled to a sliding yoke with a slot...
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| x V12 engine |
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A V12 engine is a V engine with 12 cylinders mounted on the crankcase in two banks of six cylinders, usually at a 60° angle to each other, but in some cases at a wider or narrower angle, with all 12 pistons driving a common crankshaft.
Since each...
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| x BMW 6.0L 12 cylinder 438hp 444 ft-lbs | ||
| x Liquid-cooled engine | ||
| x Air-cooled engine |
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Air-cooled engines rely on the circulation of air directly over hot parts of the engine to cool them.
Most modern internal combustion engines are cooled by a closed circuit carrying liquid coolant through channels in the engine block, where the...
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| x multi point fuel injection: lead burn | ||
| x Multi Point Fuel Injection | ||
| x Multi point Programmed Fuel Injection | ||
| x Programmed fuel injection |
Programmed Fuel Injection, or PGMFI/PGM-FI, is an electronic fuel injection system initially developed by Honda more than 20 years ago. This system has been applied to Honda motorcycles, Formula 1 racing cars, and automobiles.
Since the advent of...
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| x Carburetor |
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A carburetor (American spelling) or carburettor (Commonwealth spelling) is a device that blends air and fuel for an internal combustion engine. It was invented by Karl Benz before 1885 and patented in 1886. It is colloquially called a carb (in North...
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| x Fuel injection |
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Fuel injection is a system for mixing fuel with air in an internal combustion engine. It has become the primary fuel delivery system used in gasoline automotive engines, having almost completely replaced carburetors in the late 1980s.
A fuel...
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| x Mechanical fuel injection |
All forms of fuel injection (FI) are designed to achieve the delivery of a correct fuel/air mix into an internal combustion engine for the most fuel efficient burn. All forms of fuel injection do so by forcing the fuel under pressure through nozzles...
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| x Wet cell |
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A wet cell is a galvanic electrochemical cell with a liquid electrolyte. A dry cell, on the other hand, is a cell with a pasty electrolyte. Wet cells were a precursor to dry cells and are commonly used as a learning tool for electrochemistry. It is...
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| x Dry cell |
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A dry cell is a galvanic electrochemical cell with a pasty low-moisture electrolyte. A wet cell, on the other hand, is a cell with a liquid electrolyte, such as the lead acid batteries in most cars.
While a dry cell's electrolyte is not truly...
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| x Molten salt battery |
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Molten salt batteries are a class of primary cell and secondary cell high temperature electric battery that use molten salts as an electrolyte. They offer both a higher energy density through the proper selection of reactant pairs as well as a...
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| x Galvanic cell |
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The Galvanic cell, named after Luigi Galvani, is a part of a battery consisting of an electrochemical cell with two different metals connected by a salt bridge or a porous disk between the individual half-cells. It is sometimes also called a Voltaic...
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| x Electrolytic cell |
An electrolytic cell decomposes chemical compounds by means of electrical energy, in a process called electrolysis; the Greek word lysis means to break up. The result is that the chemical energy is increased. Important examples of electrolysis are...
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| x Fuel cell |
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A fuel cell is an electrochemical cell that produces electricity from a fuel tank. The electricity is generated through the reaction, triggered in the presence of an electrolyte, between the fuel (on the anode side) and an oxidant (on the cathode...
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| x Microbial fuel cell |
A microbial fuel cell (MFC) or biological fuel cell is a bio-electrochemical system that drives a current by mimicking bacterial interactions found in nature. Mediator-less MFCs are a much more recent development and due to this the factors that...
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| x Water fuel cell |
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The water fuel cell is a purported perpetual motion machine invented by American Stanley Allen Meyer (August 24, 1940–March 21, 1998). He claimed that an automobile retrofitted with the device could use water as fuel instead of gasoline. The fuel...
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| x Solid-oxide fuel cell |
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A solid oxide fuel cell (SOFC) is an electrochemical conversion device that produces electricity directly from oxidizing a fuel. Fuel cells are characterized by their electrolyte material and, as the name implies, the SOFC has a solid oxide, or...
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| x Phosphoric-acid fuel cell |
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Phosphoric acid fuel cells (PAFC) are a type of fuel cell that uses liquid phosphoric acid as an electrolyte. The electrodes are made of carbon paper coated with a finely-dispersed platinum catalyst, which make them expensive to manufacture. They...
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| x Molten-carbonate fuel cell |
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Molten-carbonate fuel cells (MCFCs) are high-temperature fuel cells, that operate at temperatures of 600°C and above.
Molten carbonate fuel cells (MCFCs) are currently being developed for natural gas and coal-based power plants for electrical...
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| x Direct-methanol fuel cell |
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Direct-methanol fuel cells or DMFCs are a subcategory of proton-exchange fuel cells in which methanol is used as the fuel. Their main advantages are the ease of transport of methanol, an energy-dense yet reasonably stable liquid at all environmental...
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| x Proton exchange membrane fuel cell |
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Proton exchange membrane fuel cells, also known as polymer electrolyte membrane (PEM) fuel cells (PEMFC), are a type of fuel cell being developed for transport applications as well as for stationary fuel cell applications and portable fuel cell...
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| x Flow battery |
A flow battery is a form of rechargeable battery in which electrolyte containing one or more dissolved electroactive species flows through an electrochemical cell that converts chemical energy directly to electricity. Additional electrolyte is...
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| x Voltaic pile |
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A voltaic pile is a set of individual Galvanic cells placed in series. The voltaic pile, invented by Alessandro Volta in 1800, was the first electric battery. Building on Galvani's 1780s discovery of how a circuit of two metals and a frog's leg can...
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| x Alkaline fuel cell |
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The alkaline fuel cell (AFC), also known as the Bacon fuel cell after its British inventor, is one of the most developed fuel cell technologies and is the cell that flew Man to the Moon. NASA has used alkaline fuel cells since the mid-1960s, in...
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| x Electro-galvanic fuel cell |
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An electro-galvanic fuel cell is an electrical device used to measure the concentration of oxygen gas in scuba diving and medical equipment.
A chemical reaction occurs in the fuel cell when the potassium hydroxide in the cell comes into contact with...
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| x Direct borohydride fuel cell |
Direct borohydride fuel cells (DBFCs) are a subcategory of alkaline fuel cells that use a solution of sodium borohydride for fuel. The advantage of sodium borohydride over conventional hydrogen in an alkaline fuel cell is that the highly alkaline...
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| x Protonic ceramic fuel cell |
The Protonic ceramic fuel cell or PCFC is based on a ceramic electrolyte material that exhibits high protonic conductivity at elevated temperatures.
PCFCs share the thermal and kinetic advantages of high temperature operation at 700 degrees Celsius...
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| x Direct-ethanol fuel cell |
Direct-ethanol fuel cells or DEFCs are a subcategory of Proton-exchange fuel cells where, the fuel, ethanol, is fed directly to the fuel cell.
DEFC uses Ethanol in the fuel cell instead of the more toxic methanol. Ethanol is an attractive...
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| x Reformed methanol fuel cell |
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Reformed Methanol Fuel Cell (RMFC) or Indirect Methanol Fuel Cell (IMFC) systems are a subcategory of proton-exchange fuel cells where, the fuel, methanol (CH3OH), is reformed, before being fed into the fuel cell. RMFC systems offer advantages over...
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| x Direct carbon fuel cell |
A Direct Carbon Fuel Cell (DCFC) is a fuel cell that uses a carbon rich material as a fuel. The cell produces energy by combining carbon and oxygen, which releases carbon dioxide as a by-product. The efficiency of this fuel cell is about 70% (twice...
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| x Fuel tank |
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A fuel tank is safe container for flammable liquids and typically part of an engine system in which the fuel is stored and propelled (fuel pump) or released (pressurized gas) into an engine. Fuel tanks range in size and complexity from the small...
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