Mechanical Introduced

Otto cycle

Otto cycle
Also known as the four-stroke engine. A thermodynamic cycle engine for the heating capacity for the ideal thermodynamic cycle. In 1862 a French engineer the first four-stroke engine principle, in 1876 the German engineer Nicholas • Aotuoli use this invention of the engine because the engine is smooth rotation, and excellent noise performance of small, have a great impact on the industry, this is the cycle named Otto cycle. Otto cycle of the inspiratory cycle is a process of compression, expansion and exhaust process of acting that constitute four-stroke, first piston downward movement of the fuel and air mixture through a valve into the cylinder or more to close the intake valve, piston upward movement compressed gas mixture, and then vertex close compression stroke when ignited by the spark plug mixed gases, combustion air explosion thrust force generated by the piston downward movement, acting completed stroke and finally burnt through exhaust gas cylinder from the door. Otto cycle is the ideal cycle because the theoretical analysis and the calculation that by the adiabatic cycle, and capacity, pressure and composition, process, system and the composition, nature and quality are maintained, but actually because of combustion and explosion, in which the composition and nature of inevitable change, the actual gasoline engine efficiency than ideal Otto cycle of many low efficiency, only half or less of about 25%. Modern cars, trucks and the use of internal combustion engines are used mostly in the Otto cycle.