What do you want so many cylinders for an engine? What is the purpose?

The number of cylinders refers to the number of cylinders in a single engine. Our common automobile engines, the number of cylinders are single-cylinder, double-cylinder, three-cylinder, four-cylinder, five-cylinder, six-cylinder, eight-cylinder, ten-cylinder, twelve-cylinder, etc., and the most is sixteen cylinders. Single-cylinder and two-cylinder engines are generally used in motorcycles, five-cylinder and ten-cylinder engines are relatively rare in automobiles, Volvo has used five-cylinder engines for a long time, and Audi now has some models using five-cylinder and ten-cylinder engines.

Historically, there have been seven-cylinder, nine-cylinder, and eleven-cylinder engines, but they were arranged in a star shape and were generally used in early airplanes, and rarely in automobiles.

Throughout the history of automobile development, the number of engine cylinders has experienced a development process of "less-more-less". In the early years, when Carl Benz invented the first automobile, he used a single-cylinder gasoline engine; Later, with the rapid development of automobile technology, the higher demand for engine power in automobiles, the number of engine cylinders is also increasing, from a single cylinder to a double-cylinder, four-cylinder, six-cylinder, and even launched an "arms race" in the number of cylinders, in the sixties and seventies of the last century, six-cylinder, eight-cylinder, twelve-cylinder engines can be seen everywhere; However, with the development of engine technology, the power of the liter is gradually improved, and the small displacement engine can also send out large power, coupled with the oil crisis in the seventies of the last century, people have a rigid demand for reducing fuel consumption of automobiles, so the number of engine cylinders and displacement have also been reduced, until now it is stable in a situation of four cylinders, three cylinders, and six cylinders.

The role of the cylinder is energy conversion, generally speaking, under the same displacement, the more valves, the better the intake and exhaust efficiency, the traditional engine has an intake valve and an exhaust valve per cylinder. This two-valve valve mechanism is relatively simple, has a low manufacturing cost, and is relatively easy to maintain.

A lot of cylinders are needed in order to form a good match with the spark plug, so that the oil can be burned more fully to achieve the best power supply, provide the best power to the engine, improve the fuel rate, and reduce fuel consumption.

Because there are more engine cylinders, it can be better used and improve its use value and efficiency; His purpose is to carry out energy conversion.

The function of the automobile engine cylinder is to realize energy conversion, the air and fuel inhaled by the car are mixed in the cylinder, and the combustible mixture is ignited by spark ignition, and the combustible mixture is ignited to produce high pressure when it is burned and expanded, and the piston in the cylinder is pushed to convert the chemical energy of the fuel into mechanical energy, so as to drive the car.

A cylinder is the casing of a steam turbine. The function of the cylinder is mainly to isolate the flow part of the steam turbine (nozzle, partition, rotor, etc.) from the atmosphere, so as to ensure that the steaming and steaming steam completes the work process in the steam turbine. In addition, it supports certain stationary parts of the turbine (partitions, nozzle chambers, steam envelopes, etc.), their weight, and thermal stresses due to uneven temperature distribution along the axial and radial directions of the cylinders.

1. The cylinder is a cylindrical metal part that guides the piston to carry out linear reciprocating motion in the cylinder. The working fluid converts thermal energy into mechanical energy by expansion in the engine cylinder; The gas is compressed by the piston in the compressor cylinder to increase the pressure.

2. The casing of turbines, rotary piston engines, etc. is usually called "cylinders". The application fields of pneumatic cylinders: printing (tension control), semiconductors (spot welding machines, chip grinding), automatic chaos control, robots, etc.

A cylinder is a cavity in the block of an internal combustion engine where pistons are placed. It is the track of piston movement, in which the gas burns and expands, and through the cylinder wall, it can also dissipate a part of the explosive waste heat transmitted by the gas, so that the engine can maintain the normal operating temperature.

When the cylinder and the cylinder block are cast into a whole, it is called an integral cylinder; When the cylinder and cylinder block are cast separately, the single-cast cylinder barrel is called a cylinder liner. The cylinder liner is in direct contact with the cooling water and is called the wet cylinder liner; Those that do not come into direct contact with the cooling water are called dry cylinder liners. In order to maintain the tightness of the contact between the cylinder and the piston and reduce the friction loss of the live mold accompanying the movement of the plug, the inner wall of the cylinder should have high machining accuracy and accurate shape and size.

Photo by Pacific Automobile Network Q&A).

At least 4 are needed, and the engine of the car must reach 4 to be used normally, which can promote the normal start and use of the engine, and can maintain the normal driving of the vehicle.

A car engine needs at least one cylinder; Because one cylinder is also possible, but the performance will not be particularly good, and there is no stability of a 4-cylinder engine.

The car engine needs at least one cylinder, and now the market is generally a 4-cylinder engine, and in fact, the two-cylinder engine and the single-cylinder engine are also OK, but the performance is not very good, the two-cylinder engine and the three-cylinder engine shake particularly badly during driving, and the 4-cylinder engine is more stable.

A minimum of three cylinders is also required. Because all current car engines are turbocharged engines and require a lot of exhaust, consumers now have a lot of power requirements, so there must be at least three cylinders.

Three cylinders are required. An engine with one cylinder is a motorcycle, or it may be a tractor, and a two-cylinder engine is also a motorcycle, and only a three-cylinder engine can be a car.

1.The function of the engine block is the main body of the engine.

2.It connects each cylinder to the crankcore axle box and is the support frame for mounting the pistons, crankshafts, and other parts and accessories.

3.The cylinder block is one of the main components of an automobile engine.

4.The following is the cooling method of the cylinder block:1.

5.In order to ensure that the cylinder surface can function properly at high temperatures, the cylinder and cylinder head must be cooled at all times.

6.There are two types of cooling: one is cooling with coolant (water cooling); the other is air-cooled (air-cooled); 2.Water cooling is widely used in automobile engines.

7.When the engine is cooled by water, there are cavities filled with coolant around the cylinders and in the cylinder head. These cavities are called water hoods.

8.The water jacket on the cylinder block and cylinder head is connected to each other.

When the engine is air-cooled, many heat sinks are cast on the outer surface of the cylinder block and cylinder head to increase the heat dissipation area and ensure sufficient heat dissipation.

10.Generally, the cylinder block and crankcase of air-cooled engines are cast separately.

The function of the engine cylinder block is to connect the individual cylinders and crankcase as a whole, and is the supporting skeleton for mounting pistons, crankshafts and other parts and accessories. The following is a specific introduction to the characteristics of the cylinder block: 1. High strength

It has sufficient strength and stiffness, and the deformation is small, so as to ensure the correct position of the moving parts of the voltswagen shed, operate normally, and have little vibration and noise. 2. Cooling: It has good cooling performance, and there is a cooling water jacket around the cylinder barrel to let the cooling water take away the heat.

3. Lack of wear resistance: wear resistance to ensure that the cylinder block has enough service life.