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Engine structure diagram (engine anatomy diagram Detailed explanation of engine structure diagram) The Binance wikipediaengine is the heart of a car and one of the basic parts of the car. The structure of the engine can be regarded as the skeleton of the car. Mastering the structure and working principle of the engine is very important for understanding the driving performance, economic performance and safety performance of the car. This article will briefly introduce the engine structure diagram (engine anatomy diagram and detailed explanation of engine structure diagram). I. Classification of engines Engines are mainly divided into two categories: internal combustion engine and external combustion engine. Internal combustion engines are divided into four types: gasoline engines, diesel engines, gasoline direct injection engines and diesel direct injection engines. External combustion engines are divided into two types: steam engines and gas turbines. Among them, gasoline engines and diesel engines are the most common internal combustion engines and the main driving forces used by automobiles.II. Structural composition of the engine 1. Cylinder block is the most important component of the engine. It is usually made of cast iron or aluminum alloy and consists of multiple cylinder liners. The number of cylinders of automobile engines is usually 4 cylinders, 6 cylinders, 8 cylinders, etc. Two. The crankcase is the lower structure of the engine, which is fixed in the lower part of the engine. Its main function is to support the crankshaft, and it is also an important part of the engine shock absorber. 3. The crankshaft is the core of the engine and the output shaft of the engine. When it rotates, it can drive the connecting rod and piston of the engine to make the car move forward. The crankshaft is usually made of steel or cast iron, which is very sturdy and durable. Four. The piston piston is a part of the engine's up and down movement. Its function is to increase and reduce the volume in the cylinder and drive the change of the gas in the cylinder. Pistons are usually made of aluminum alloy or precision cast iron.5. The connecting rod is an important part connecting the crankshaft and piston. Its function is to convert the rotational motion of the crankshaft into the up and down motion of the piston. 6. The cylinder head is the cover of the upper part of the engine, which covers the cylinder block and valve and its related parts. The cylinder head is usually made of aluminum alloy or cast iron, which is an important part of the engine, mainly protecting the valve mechanism, cylinder and other parts of the engine. 7. Intake and exhaust duits The intake and exhaust duits are important parts of the engine. It is responsible for inhaling the air and fuel mixture into the cylinder and discharging the combustion exhaust gas into the external environment. Eight. The valve and valve drive mechanism The valve and valve drive mechanism are the core components of the engine, which are responsible for controlling the intake and exhaust. The valve is usually made of cast iron or steel, and the valve drive mechanism consists of camshaft, lifter, valve spring and other components.III. Working principle of the engine When the engine starts, the battery provides electricity to make the car start the machine run, and the starter drives the crankshaft to rotate, which then drives the operation of the whole engine. Each cylinder enters the air through the intake channel and the air fuel mixed with gasoline. When the piston rises, the mixed gas is squeezed to the cylinder head. After ignition with the fuel of the indoor fuel injector, an explosive reaction occurs, thus releasing energy to push the piston down. The crankshaft is driven to rotate and finally drives the car forward. IV. Advantages and disadvantages of the engine Advantages: 1. Internal combustion engine is small in size and light in weight; 2. Simple and easy to maintain, can carry out long-term and high-intensity work; 3. Large rotation speed and smooth operation; 4. It has high efficiency and power output. Disadvantages: 1. Because harmful substances will be produced during the combustion process, the internal combustion engine seriously pollutes the environment;Two. It uses more fuel and requires a large amount of energy supply. In summary, the engine structure diagram (engine anatomy diagram and detailed explanation of the engine structure diagram) are very important for car enthusiasts and repairmen. Mastering the structure and working principle of the engine can better understand the performance of the car and choose a more suitable vehicle.

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