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Detailed explanation of engine structure and okx.com loginprinciple! The engine is one of the most important core components of modern cars. It is the heart of the operation of the car and the biggest driving force of the car. Therefore, understanding the structure and principle of the engine is an indispensable knowledge for every car owner.Next, let's take a closer look at the structure and principle of the engine! I. Components of the engine The engine is mainly composed of the following parts: cylinder, piston, crankshaft, connecting rod, valve, spark plug and fuel system. These parts complete the driving of the car through collaboration. Cylinder: The cylinder is usually made of cast iron, aluminum alloy and other materials, mainly to accommodate the up and down movement of the piston. The number of cylinders is related to the displacement of the engine. Generally, small cars use 4-cylinder or 6-cylinder engines, while large trucks and buses use 8-cylinder or 12-cylinder engines. Piston: The piston is the core part of the internal movement of the engine. Generally, it drives the piston up and down through the rotation of the crankshaft. There is a ring groove on the piston, which is used to install the piston ring and seal the gap between the piston and the cylinder. The lower part of the piston is the piston pin hole, which is used to connect with the connecting rod.Crankshaft: The crankshaft is the key part that connects the piston and the connecting rod. The crankshaft is composed of multiple spindles, connecting rod heads, subordinate shafts, etc. Its function is to convert the reciprocating motion driven by the piston into continuous rotational motion, and then transfer the converted energy to other parts through the bearing. Connecting rod: The connecting rod is a part that connects the piston and the crankshaft. There are piston pin holes and crankshaft pin holes on the connecting rod, which are connected through these two holes to convert power. The connecting rod can also adjust the up and down movement of the piston, the angle with the crankshaft and the change of the rod length to control the performance of the engine. Vale: The valve is a key component for opening and closing the cylinder. It consists of a valve and a valve seat. The valve controls the opening and closing time through the crankshaft controller. In the open state, fresh air and mixed fuel enter the cylinder for combustion. Spark plugs: usually installed between cylinders are used to ignite the mixed gas.When the mixed gas burns in the cylinder, the spark plug ignites the flame directly or indirectly, releasing a huge amount of energy to drive the car. II. The working principle of the engine. The combustion process in the engine is the core of the engine's work. The working process is roughly divided into four stages: intake, compression, explosion and discharge. 1. Air intake: In the air intake stage, the piston moves down from the top of the cylinder head. When the piston drops, the valve opens, and fresh air and mixed fuel enter the cylinder, while exhaust gas is discharged from the exhaust pipe. 2. Compression: In the compression stage, the piston begins to move up and the valve closes. In this process, the air and fuel in the cylinder are compressed into a high-pressure mixed gas, and the energy is accumulated. 3. Explosion: In the explosion stage, the spark plug points the mixed gas in the gas cylinder, which explodes and releases energy.The high-temperature and high-pressure gases generated by the explosion push the piston down, drive the crankshaft to rotate, and then drive the car. 4. Emission: In the discharge stage, the rotation of the crankshaft drives the connecting rod and piston upward movement to discharge the exhaust gas from the cylinder. The exhaust valve is opened and the exhaust gas is discharged from the exhaust pipe. III. Summarize that the engine, as the core part of the car, is equivalent to the heart of the car, which is extremely important. Its structure and principle are not complicated, but it takes a process to truly understand and master it. Therefore, it is also very necessary to understand the details of the engine, pay attention to the details and maintain the health of the engine. This article introduces the structure and principle of the engine in detail. I believe it will be helpful to car owners and enthusiasts.

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