How do the various institutions of automobile engines divide and cooperate?

The gasoline engine is composed of two major mechanisms and six major systems, the two major mechanisms are the crank connecting rod mechanism, the gas distribution mechanism, and the five major systems are, fuel supply, lubrication system, cooling system, ignition system, starting system, electronic control system, and diesel engine does not have an ignition system.

1) Filter. The filter is located in the engine air intake system, and it is an assembly consisting of one or several filter components that clean the air. Its main function is to filter out harmful impurities in the air that will enter the cylinder, so as to reduce the early wear of the cylinder, pistons, piston rings, valves and valve seats.

2) Piston rings. The piston ring is a metal ring used to penetrate the inside of the piston groove, and the piston ring is a metal elastic ring with a large outward expansion deformation, which is assembled into the annular groove with the corresponding profile.

3) Oil seal. The oil seal is a mechanical element used to seal the oil, which isolates the parts that need to be lubricated from the output parts of the transmission parts, so that the lubricating oil will not leak.

4) Throttle body. The valve body is a valve that controls how much air is sucked into the engine. It is a circular steel sheet with a shaft in the middle, which is connected to the throttle cable and controlled by the throttle cable.

5) Turbocharger. A device that increases the pressure of a flammable mixture or air entering a cylinder.

6) Automatic gearbox. Cars with automatic transmissions can automatically change speed and torque according to road conditions, so that the driver can pay full attention to the traffic on the road without being distracted by shifting gears.

7) Gasoline pump. The function of the gasoline pump is to suck the gasoline out of the tank and press it through the line and the gasoline filter into the float chamber of the carburetor.

8) Connecting rods. Members in a linkage that are hinged to active and driven members at both ends to transmit motion and force.

9) EFI. The EFI engine has the functions of cold start thickening and automatic cold car fast idling, which can ensure that the engine starts smoothly regardless of whether it is cold or hot.

The mechanism and composition of engines are basically divided into two categories: gasoline engines and diesel engines. It is composed of two major mechanisms and five major systems, namely the crank connecting rod mechanism, the air distribution mechanism, the oil supply system, the lubrication system, the cooling system, the ignition system and the starting system.

The biggest difference between a gasoline engine and a diesel engine is that the diesel engine does not have an ignition system, and their fuel supply systems are also very different.

Mechanism and composition of the starting wide machine:

1.The crank linkage mechanism is the main moving part of the engine to achieve the working cycle and complete the energy conversion. It consists of a body group, a piston linkage group, and a crankshaft flywheel group.

2.The function of the valve mechanism is to open and close the intake and exhaust valves at regular intervals according to the working sequence and process of the engine, so that the combustible mixture or air body enters the cylinder, and the exhaust is discharged from the cylinder to realize the ventilation process.

3.Lubrication system. The function of the lubrication system is to deliver a certain amount of clean lubricating oil to the surface of the parts in relative motion, so as to achieve liquid friction, reduce friction resistance, and reduce the wear of parts.

4.Cooling system. The function of the cooling system is to dissipate part of the heat absorbed by the heated parts in time to ensure that the engine works at the most suitable temperature.

5.The fuel supply system, the role of the fuel supply system of the gasoline engine is to prepare a certain amount and concentration of mixed gas according to the requirements of the engine, supply the cylinder, and exhaust the exhaust gas after combustion from the cylinder to the atmosphere.

6.Ignition system: In a gasoline engine, the combustible mixture in the cylinder is ignited by an electric spark, so a fire plug is installed on the cylinder head of the gasoline engine, and the head of the spark plug extends into the combustion chamber.

Millions of car purchase subsidies.

Two major mechanisms: gas distribution mechanism and crank connecting rod mechanism. The role of the gas mechanism:

According to the requirements of the working cycle and firing sequence carried out in each cylinder of the engine, the intake and exhaust valves of each cylinder are opened and closed regularly, so that the fresh charge can enter the cylinder in time and the exhaust gas can be discharged from the cylinder in time.

During the compression and expansion strokes, the sealing of the combustion chamber is ensured. The function of the crank connecting rod mechanism: to provide a combustion place, to convert the expansion pressure of the gas generated by the combustion of the fuel on the top of the piston into the torque of the crankshaft rotation, and to convert the heat energy emitted after the combustion of the fuel into mechanical energy, and continuously output power.

Although there are many types of vehicles, the structure is similar. This should be said to be the credit of standardization, but also the need for large-scale production lines. With the development of society, the progress of science and technology and the change of demand, the shape of railway vehicles has begun to change, especially the Shibi is passenger car is no longer the same old face.

However, their basic structure has not changed significantly, but the specific parts have a more scientific and advanced structural design.

Generally speaking, the basic structure of the vehicle is composed of five parts: the car body, the undercarriage, the running part, the coupler buffer device and the braking device.

The body is the part of the vehicle that is used to load goods or passengers, and is the basis for the installation and connection of other components of the vehicle. The body of the early vehicles was mainly made of wood, supplemented by steel plates, bow rods, etc. The modern car body is mainly steel structure or filial piety light metal structure.

1) Crank linkage mechanism.

As shown in the figure, the crank connecting rod is an important component of the automobile engine to realize the working cycle and complete the energy conversion, it is composed of the body group, the piston connecting rod group and the crankshaft flywheel group, etc., in the process of operation, the piston bears the gas pressure in the cylinder for linear motion, and the rotary motion of the crankshaft is replaced by the connecting rod, and the power is output from the crankshaft. In addition, during the intake, compression and exhaust processes, the flywheel releases energy, which converts the rotational motion of the crankshaft into the linear motion of the piston.

Valve mechanism. The function of the valve mechanism is to open and close the intake and exhaust valves at regular intervals according to the working sequence and working process of the engine, so that the combustible mixture or air enters the cylinder, and the exhaust gas is discharged from the cylinder to achieve the ventilation process. Most of the valve mechanism adopts the overhead valve valve gear tie structure, which is generally composed of valve group, valve transmission group and valve drive group.

After understanding the above two major mechanisms, let's take a look at its five major systems: starting system, fuel supply system, cooling system, lubrication system, and ignition system.

Starting system. If you want to make the engine change from a stationary state to an ICBC hood state, you first need to borrow external force to rotate the crankshaft of the engine, so that the piston can make repeated movements, and the combustible mixture in the cylinder burns and expands to do work, and pushes the piston to move downward to rotate the crankshaft. Only when it is started can it run on its own, and only then can the work cycle be carried out on its own.

Therefore, the whole process from the crankshaft to the automatic idle operation of the engine under the action of external force is called the starting of the engine, and the device required to complete the starting process is called the starting system of the engine.

2) Fuel supply system.

The function of the fuel supply system of the gasoline engine is to prepare a certain amount and concentration of mixture according to the requirements of the engine, supply it to the cylinder, and discharge the flight after combustion from the cylinder; The function of the diesel engine fuel supply system is to supply diesel and air into the cylinder respectively, form a mixture in the combustion chamber and burn it, and finally discharge the exhaust gas after combustion.

3) Cooling system.

The function of the cooling system is to dissipate part of the heat absorbed by the heated hot parts in time to ensure that the engine works at the most suitable temperature state. The cooling system of a water-cooled engine is usually composed of components such as a cooling jacket, a water pump, a fan, a water tank, and a thermostat.

4) Lubrication system.

The function of the lubrication system is to transport a certain amount of situational lubricating oil to the surface of the parts in relative motion to achieve liquid friction, reduce frictional resistance, and reduce the wear of parts. and the surface of the part is cleaned and cooled. The lubrication system is usually composed of a lubricating oil channel, an oil filter, a gasoline pump and some valves.

5) Ignition system.

In a gasoline engine, the flammable mixture in the cylinder is ignited by an electric spark, for which a spark plug is installed on the cylinder head of the gasoline engine, and the head of the spark plug protrudes into the combustion chamber. All equipment that can generate an electric spark between the spark plug electrodes on time is called an ignition system, which is usually composed of parts such as generators, batteries, distributors, ignition coils, and spark plugs.

The two major mechanisms of the automobile engine are the crank connecting rod mechanism, the valve mechanism, and the five major systems are the crank connecting rod mechanism, the gas distribution mechanism, the starting system, the lubrication system, the cooling system, the fuel supply system, and the ignition system. The function of the valve mechanism: according to the requirements of the working cycle and firing sequence in each cylinder of the engine, the intake and exhaust valves of each cylinder are opened and closed regularly, so that the fresh charge can enter the cylinder in time and the exhaust gas can be discharged from the cylinder in time; During the compression and expansion strokes, the sealing of the combustion chamber is ensured.

The function of the crank connecting rod mechanism collapses: it provides a combustion place, converts the expansion pressure of the gas generated after fuel combustion on the top of the piston into the torque of the crankshaft rotation, and converts the heat energy emitted after fuel combustion into mechanical energy, and continuously outputs power. The function of the fuel supply system of gasoline engine is to prepare a certain amount and concentration of mixture according to the requirements of the engine, supply it to the cylinder, and exhaust the exhaust gas after combustion from the cylinder to the atmosphere.

The function of the cooling system is to dissipate part of the heat absorbed by the heated parts in time to ensure that the engine works at the most suitable temperature state; The cooling system of a water-cooled engine usually consists of a cooling jacket, a water pump, a fan, a water tank, a thermostat, etc. The function of the lubrication system is to deliver a certain amount of clean lubricating oil to the surface of the parts in relative motion to achieve liquid friction, reduce frictional resistance, and reduce the wear of the machine. and the surface of the part is cleaned and cooled. The lubrication system is usually composed of a lubricating oil channel, an oil pump air circle, an oil filter and some valves. In a gasoline engine, the flammable mixture in the cylinder is ignited by an electric spark, for which a spark plug is installed on the cylinder head of the gasoline engine, and the head of the spark plug protrudes into the combustion chamber. All equipment that can generate electric sparks between the spark plug electrodes on time is called an ignition system, which usually consists of a battery, a generator, a distributor, an ignition coil and a spark plug.

The two major mechanisms of the engine are the valve mechanism and the crank connecting rod mechanism, and the function of the valve mechanism is to open and close the inlet and discharge of each cylinder at regular intervals and start and close the hand valve in accordance with the requirements of the working cycle and firing sequence carried out in each cylinder of the engine, so that the fresh charge can enter the cylinder in time, and the exhaust gas can be discharged from the cylinder in time. The crank linkage mechanism is suspected of cheating by providing a place for combustion, converting the expansion pressure of the gas generated after fuel combustion on the top of the piston into the torque of the crankshaft rotation, and converting the heat energy emitted after fuel combustion into mechanical energy, and continuously outputting power. The five major systems of the engine are the starting system, cooling system, lubrication system, ignition system and supply system.

The engine is divided into two major mechanisms, crank connecting rod mechanism and gas distribution mechanism, and five major systems: fuel supply system, lubrication system, cooling system, ignition system and starting system.

Two major mechanisms, crank connecting rod mechanism, and five major systems of gas distribution mechanism.

Fuel supply system, lubrication system, cooling system, ignition system and starting.

The crank linkage mechanism is the main moving part of the engine to realize the working cycle and complete the energy conversion. It is composed of a body group, a piston connecting rod group and a crankshaft flywheel group, etc.

The function of the valve mechanism is to open and close the intake and exhaust valves at regular intervals according to the working sequence and working process of the engine, so that the hail can quietly ignite the mixture or air into the cylinder, and make the exhaust gas discharge from the cylinder to achieve the ventilation process. The function of the fuel supply system of gasoline engine is to prepare a certain amount and concentration of mixture according to the requirements of the engine, supply it to the cylinder, and exhaust the exhaust gas after combustion from the cylinder to the atmosphere. The function of the diesel engine fuel supply system is to supply diesel and air into the cylinder respectively, form a mixture in the combustion chamber and burn it, and finally discharge the exhaust gas after combustion.

The function of the lubrication system is to deliver a certain amount of clean lubricating oil to the surface of the parts in relative motion to achieve liquid friction, reduce frictional resistance, and reduce the wear of the machine parts and beams. and the surface of the part is cleaned and cooled. The lubrication system usually consists of a lubricating oil channel, an oil pump, an oil filter, and some valves.

The function of the cooling system is to dissipate part of the heat absorbed by the heated parts in time to ensure that the engine works at the most suitable temperature state; The cooling system of a water-cooled engine usually consists of a cooling jacket, a water pump, a fan, a water tank, a thermostat, etc.

In a gasoline engine, the flammable mixture in the cylinder is ignited by an electric spark, for which a spark plug is installed on the cylinder head of the gasoline engine, and the head of the spark plug protrudes into the combustion chamber. All equipment that can generate electric sparks between the spark plug electrodes on time is called an ignition system, and the ignition system source socks are usually composed of a battery, a generator, a distributor, an ignition coil and a spark plug.

The gasoline engine usually consists of two major mechanisms and five major systems, while the diesel engine lacks an ignition system. The schematic diagram of the structure of the gasoline engine is shown in Figure 79. The structure of the gasoline engine shows the positive trace of the crank connecting rod mechanism.

The crank connecting rod mechanism is the core mechanism of the engine to realize the thermal function conversion; It is mainly composed of body group (mound body, cylinder head, oil pan), piston connecting rod group (piston, piston ring, piston pin, connecting rod body, connecting rod cover, connecting rod bolt), crankshaft flywheel group (crankshaft, flywheel). Valve mechanism. In order to make the engine work cycle continuous, must open and close the inlet and exhaust valves at regular intervals, so as to fill the cylinder with mixture and discharge exhaust gas, for this reason, the engine is provided with a valve mechanism.

It is mainly composed of valve train (gas state valve, valve guide, valve spring) and valve transmission group (timing gear, camshaft, tappet, push rod, rocker arm, rocker arm shaft). Fuel supply system. The traditional carburetor fuel supply system is generally composed of a gasoline tank, a gasoline pump, a gasoline filter, a carburetor, an air filter, an intake manifold, an exhaust manifold, an exhaust muffler, etc.

Its function is to mix gasoline and air in a suitable proportion of combustible mixture into the cylinder, and make the combustion such as the generated exhaust gas into the atmosphere. Ignition system. The gasoline engine relies on the high-pressure electric spark generated by the ignition system to ignite the combustible mixture in the cylinder in a timely manner.

It is mainly composed of batteries, generators, distributors, ignition coils, spark plugs and ignition switches. Water cooling system. The water cooling system is generally composed of a water pump, a thermostat, a radiator, a fan, a circulating water jacket, a water distribution pipe, etc.

Its function is to dissipate the excess heat of the parts to maintain the normal operating temperature of the engine. Lubrication system. The function of the lubrication system is to send lubricating oil to the friction surface of the relatively moving parts, reduce the wear of the parts, and also cool, clean the surface of the parts and seal, dampen and prevent rust.

Generally, it is composed of oil pump, filter collector, pressure limiting valve, lubricating oil channel, oil primary filter, oil fine filter, oil cooler, etc. Boot the system. Including the starter and its attachments, the role is to start the engine.