Otto four-stroke engine. How it works, or a completely true story.
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A piston four-stroke internal combustion engine contains a housing, two mechanisms (crank-rod and timing) and a number of systems (intake, fuel, ignition, lubrication, cooling, exhaust and engine management system). The engine body unites the block (blocks with a V-shaped or opposite arrangement of cylinders or separate cylinders for air-cooled engines) of cylinders and the block head (block heads) of cylinders. The crank mechanism converts the reciprocating motion of the pistons in the cylinders into the rotational motion of the crankshaft. The gas distribution mechanism ensures the timely supply of air or fuel-air mixture to the cylinders and the release of exhaust gases through the alternate connection of the cylinder cavity to the intake and exhaust manifolds. The intake system (intake system) is designed to supply the required amount of air to the engine and create a fuel-air mixture. The term "intake system" appeared with the development of the design of internal combustion engines, especially with the advent of the direct fuel injection system. The equipment for providing the engine with air ceased to be just an air duct, but turned into a separate air injection system. The fuel system (fuel supply system) is designed to store, clean and feed the engine with fuel. The design of the vehicle's fuel system includes a fuel tank, fuel pump, fuel filter, and injection system, which are connected in series by fuel lines. The joint operation of the intake and fuel systems ensures the formation of a fuel-air mixture. The basis of the fuel system is the injection system. The ignition system performs forced ignition of the fuel-air mixture in gasoline engines. The ignition of the mixture occurs from a spark, so another name for the system is a spark ignition system, and for a gasoline engine, a spark ignition engine. In diesel engines, the mixture spontaneously ignites due to compression. Depending on the method of controlling the ignition process, the following types of ignition systems are distinguished: contact, non-contact (transistor) and electronic (microprocessor). The lubrication system is designed to reduce friction between the connected parts of the engine. In addition to performing the main function, the lubrication system provides cooling of engine parts, removal of soot and wear products, protection of engine parts from corrosion. The engine lubrication system includes an engine crankcase pan with an oil pick-up, an oil pump, an oil filter, and an oil radiator, which are interconnected by lines and channels. Official pages: https://www.facebook.com/profile.php?.... / romaniv_2809 / mechanics_ukr
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