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Internal combustion

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"ICEV" redirects here.
For the form of water ice, see Ice V. For the high speed train, see ICE V. Diagram of a cylinder as found in 4-stroke gasoline engines.: C ? crankshaft. E ? exhaust camshaft. I ? inlet camshaft. P ? piston. R ? connecting rod. S ? spark plug. V ? valves.

red: exhaust, blue: intake. W ? cooling water jacket. gray structure ? engine block. Diagram describing the ideal combustion cycle by Carnot An internal combustion engine (ICE) is a heat engine where the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber that is an integral part of the working fluid flow circuit.

In an internal combustion engine the expansion of the high-temperature and high-pressure gases produced by combustion apply direct force to some component of the engine. The force is applied typically to pistons, turbine blades, rotor or a nozzle.

This force moves the component over a distance, transforming chemical energy into useful mechanical energy. The first commercially successful internal combustion engine was created by Étienne Lenoir around 18591 and the first modern internal combustion engine was created in 1876 by Nikolaus Otto (see Otto engine). The term internal combustion engine usually refers to an engine in which combustion is intermittent, such as the more familiar four-stroke and two-stroke piston engines, along with variants, such as the six-stroke piston engine and the Wankel rotary engine.

A second class of internal combustion engines use continuous combustion: gas turbines, jet engines and most rocket engines, each of which are internal combustion engines on the same principle as previously described.12 Firearms are also a form of internal combustion engine.2 Internal combustion engines are quite different from external combustion engines, such as steam or Stirling engines, in which the energy is delivered to a working fluid not consisting of, mixed with, or contaminated by combustion products.

Working fluids can be air, hot water, pressurized water or even liquid sodium, heated in a boiler.

ICEs are usually powered by energy-dense fuels such as gasoline or diesel, liquids derived from fossil fuels.
While there are many stationary applications, most ICEs are used in mobile applications and are the dominant power supply for vehicles such as cars, aircraft, and boats. Typically an ICE is fed with fossil fuels like natural gas or petroleum products such as gasoline, diesel fuel or fuel oil.

There's a growing usage of renewable fuels like biodiesel for compression ignition engines and bioethanol or methanol for spark ignition engines.

Hydrogen is sometimes used, and can be made from either fossil fuels or renewable energy.Źródło:

Conversion of worthless cars into something really luxurious

Renovation of old cars is a very profitable venture, especially when really we gain experience in this matter, and cars leaving our workshop turned into real gems automotive industry.
While many people engaged in this activity are people who have no training in this area, it does not mean, however, that renewed their cars are worth nothing.
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No wonder that the number of people interested in restoration of stylish and often very old cars is expanding from year to year.

Historical design

Historical design Dugald Clerk developed the first two cycle engine in 1879. It used a separate cylinder which functioned as a pump in order to transfer the fuel mixture to the cylinder.6 In 1899 John Day simplified Clerk's design into the type of 2 cycle engine that is very widely used today.13 Day cycle engines are crankcase scavenged and port timed. The crankcase and the part of the cylinder below the exhaust port is used as a pump.
The operation of the Day cycle engine begins when the crankshaft is turned so that the piston moves from BDC upward (toward the head) creating a vacuum in the crankcase/cylinder area.
The carburetor then feeds the fuel mixture into the crankcase through a reed valve or a rotary disk valve (driven by the engine). There are cast in ducts from the crankcase to the port in the cylinder to provide for intake and another from the exhausst port to the exhaust pipe. The height of the port in relationship to the length of the cylinder is called the "port timing." On the first upstroke of the engine there would be no fuel inducted into the cylinder as the crankcase was empty.

On the downstroke the piston now compresses the fuel mix, which has lubricated the piston in the cylinder and the bearings due to the fuel mix having oil added to it.

As the piston moves downward is first uncovers the exhaust, but on the first stroke there is no burnt fuel to exhaust. As the piston moves downward further, it uncovers the intake port which has a duct that runs to the crankcase. Since the fuel mix in the crankcase is under pressure the mix moves through the duct and into the cylinder. Because there is no obstruction in the cylinder of the fuel to move directly out of the exhaust port prior to the piston rising far enough to close the port, early engines used a high domed piston to slow down the flow of fuel. Later the fuel was "resonated" back into the cylinder using an expansion chamber design.
When the piston rose close to TDC a spark ignites the fuel.

As the piston is driven downward with power it first uncovers the exhaust port where the burned fuel is expelled under high pressure and then the intake port where the process has been completed and will keep repeating. Later engines used a type of porting devised by the Deutz company to improve performance.

It was called the Schnurle Reverse Flow system.

DKW licensed this design for all their motorcycles.

Their DKW RT 125 was one of the first motor vehicles to achieve over 100 mpg as a result.14Źródło:

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best stop smoke oil