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Engine assembly refers to the basic assembly of automobile engine devices,European Cup live which is also one of the most important components of the vehicle power system. It is composed of piston, cylinder, cylinder head, crankshaft, connecting rod, valve, oil pump and other components, which can convert the energy of gasoline or diesel into the power output required for vehicle operation. This article will introduce the composition, principle and working process of the engine assembly from the following aspects.I. Composition of the engine assembly The composition of the engine assembly includes: cylinder block, piston assembly, crankshaft, connecting rod, valve, cylinder head, intake manifold, exhaust manifold, oil pump, water pump, radiator and other components. These parts form a whole after assembly, which can convert the energy generated by fuel combustion into power output and push the vehicle forward. The cylinder block is the main part of the engine assembly, which is composed of multiple cylinders. Each cylinder is equipped with a piston assembly. The piston assembly is connected to the crankshaft through the connecting rod, so that the crankshaft rotates when the piston moves, thus driving the vehicle. The cylinder head is responsible for closing the top of the cylinder and installing valves, spark plugs and other components to ensure that the gas generated by combustion in the cylinder can enter and exit smoothly. II. The working principle of the engine assembly The working principle of the engine assembly depends on the basic principle of the internal combustion engine.Reason: The energy generated by combustion gas under high temperature and high pressure is converted into mechanical energy, which then drives the vehicle to generate power output. The specific process is as follows: 1. In the intake stage, the gas in the intake manifold of the engine is compressed and enters the cylinder through the valve. At the same time, after mixing gasoline or diesel with air, it is injected into the cylinder through the injector to prepare for combustion. Two. In the combustion stage, the fuel injected by the fuel injector is mixed with the high-temperature gas in the cylinder to produce a combustion reaction. The thermal energy generated by fuel combustion expands the gas, pushing the piston down, and driving the crankshaft to rotate. 3. In the exhaust stage, in the exhaust stage, the exhaust gas is discharged from the cylinder through the upward movement of the piston and discharged out of the car through the exhaust manifold. At the same time, the fresh air entering the cylinder will push the piston down again and enter a new round of air intake stage.III. The working process of the engine assembly The working process of the engine assembly mainly undergoes four strokes: intake, compression, explosion and exhaust. The process of these strokes is as follows: 1. The intake stroke valve opens, the gas enters the cylinder, and the oil pump operates at the same time to inject fuel into the cylinder. Two. The cylinder inside the compression-stroke engine is tightened to reach maximum compression, and the fuel in the cylinder is fully compressed and ready to catch fire. 3. The burst stroke spark plug ignites the fuel, and the expansion of the gas pushes the piston down while making the crankshaft rotate. The high-temperature and high-pressure gas generated by combustion will continue to advance outward, generating thrust. Four. The exhaust stroke valve is closed, the exhaust valve is opened, and the gas can flow out of the exhaust manifold. At this time, the new cycle begins again, and the engine continues to carry out such a working cycle, pushing the whole car forward.In a word, as the core component of the vehicle power system, the engine assembly plays a crucial role and has a crucial impact on the driving performance, fuel consumption and environmental protection of the car. Therefore, proper engine maintenance is very important for car owners. Only by careful maintenance and regular replacement of parts in daily use can the engine assembly be maintained in good condition and the driving safety and service life of the vehicle be enhanced.

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