Why does the engine have more than one cylinder

This is a 1934 Landini "hot head" tractor: it has a single-cylinder engine, and you can clearly see the head protruding under the radiator grille. The capacity of the various models is between liters and liters.

The piston stroke is 190 270 mm, the cylinder bore is 170 260 mm. These are huge cylinders, and they have a huge lever and a huge crank. Obviously, the maximum revs are very low, ranging from 500 to 950 rpm.

Many modern electric motors are idling at this speed.

This type of engine is large and heavy and has very little power. It also vibrated hard. But all this is no problem for an agricultural tractor, as long as it has absolute reliability in any foreseeable situation and is able to run on a wide range of fuels, from diesel to kerosene and even rapeseed oil.

When internal combustion engines are used for different purposes, a number of problems arise that make it less convenient to use single-cylinder engines. Vibration: The reciprocating motion of the piston produces vibrations.

The larger the piston, the faster it moves up and down in the cylinder, and the longer the distance (stroke) it moves, the greater the intensity of the vibration. The solution was to distribute the engine's capacity among different cylinders so that smaller pistons could run on shorter bores. With precise positioning of the crank, you can make one piston move up and the other downward, eliminating (almost) all vibrations.

Uniformity of combustion: In order to use the fuel efficiently, and thus transfer the energy of the fuel to the crankshaft, the combustion must be fast and thorough. In a very large cylinder, it is difficult to reach full combustion for a small time, since the "combustion front", from the spark plug (spark motor) or from the high turbulence chamber (diesel) the propagation velocity is limited, and the piston may not reach the limbs of the combustion chamber when the lower dead center has been reached and begins to rise again.

Burning after this moment (actually, even a little bit before) is harmful. Splitting a large combustion chamber into many smaller chambers allows the engine to reach higher revs while maintaining good efficiency.

Shape: Multi-cylinder motors are roughly rectangular in shape and can be easily fitted under the hood (on a car) or under a streamlined fairing (on an airplane). A single-cylinder engine is a very dysfunctional unit that has a large round part (crankshaft housing) and a protruding thing (cylinder and head assembly) which makes it difficult to encapsulate.

The Moto Guzzi Falcone has a 500 cc horizontal single motor. It's hard to fit into a triangular frame. In summary:

Multi-cylinder motors are less vibrate, more efficient (and therefore more powerful) at high rpm than single-cylinder motors of the same capacity, and easier to package. In aerospace applications, vibration reduction is very important as it can significantly reduce the weight of the engine mounts.

The only downside to multi-cylinder motors is that they have less torque at low rpm and are heavier than single-cylinder motors (given the same capacity). That's why single-cylinder motors are still the preferred choice for motocross bikes, as motocross bikes are required to be very light and provide plenty of low-rpm torque.

The more cylinders in the engine, the smoother the vehicle will work, and the engine will not produce large shock vibrations. If the number of cylinders is too small, the vehicle will vibrate like a tractor. In addition, the more cylinders, the faster the acceleration of the car, and the more fuel consumption there is.

The engine uses the principle of magnetic induction, which is converted into kinetic energy by mechanical energy, and the process is very complex and there is a certain loss, and a cylinder cannot realize the conversion of energy, resulting in unusable.

If the engine has only one cylinder, it can't pull the car at all, so you have to have multiple cylinders.

The cylinder of the engine refers to the cylinder block of the engine, which can also be called the cylinder block.

The cylinder block is generally made of gray cast iron or aluminum alloy, the cylindrical cavity in the upper part of the cylinder block is called the cylinder, and the lower half is the crankcase supporting the crankshaft, and the inner cavity is the space for the crankshaft to move. There are many stiffeners, cooling water jackets and lubricating oil channels cast inside the cylinder block.

At present, the mainstream engine cylinder arrangement:

In-line engine, generally abbreviated as L, for example, L4 stands for in-line 4 cylinders. The in-line layout is the most widely used form of cylinder arrangement today, especially on engines with the following displacements. All cylinders in this type of engine are arranged side by side at the same angle in a flat plane, and only one cylinder head is used, and the structure of the cylinder block and crankshaft is relatively simple, as if the cylinders were standing in a column.

V-type arrangement, the so-called V-shaped engine, simply put, is to divide all cylinders into two groups, and arrange the adjacent cylinders together at a certain angle, so that the two groups of cylinders form an angle plane, and the cylinders are V-shaped (usually the angle is 60 °) from the side, so it is called V-shaped engine. Compared to the in-line layout, the V-engine reduces the length and height of the body, and the lower mounting position allows designers to design a body with a lower drag coefficient, while the opposite arrangement of the cylinders also counteracts some of the vibrations and makes the engine run more smoothly.

The "cylinder" of the engine refers to the cylinder. When the engine is working, the cylinder explodes with an oil-gas mixture, and the volume expands rapidly and the jacking piston works on the engine crankshaft in stages. Generally speaking, the cylinder corresponds to a large displacement, the engine is more powerful when working, the vibration is small, and the noise and jitter are small.

There are more cylinders for luxury cars with large displacement, and fewer cylinders for family cars with small displacement. At present, there are 3-cylinder, 4-cylinder, 6-cylinder, 8-cylinder, 12-cylinder and other models.

1. The number of cylinders commonly used in automobile engines is cylinders.

2. The engine with a displacement of less than 1 liter is commonly used 3 cylinders (such as Xiali 7100), 1-liter is generally a 4-cylinder engine, an engine of about 3 liters is generally 6 cylinders, about 4 liters is 8 cylinders, and a 12-cylinder engine is used for liters or more.

3. According to the arrangement of the engine, it can be divided into W-type 12-cylinder engines (such as Volkswagen Phaeton W12, Audi A8W12), V-shaped 12-cylinder engines (such as Mercedes-Benz S600, BMW 760), W-type 8-cylinder engines (such as Passat W8), V-shaped 8-cylinder engines (such as new Audi horizontally opposed 6-cylinder engines (such as Subaru Forester), V-shaped 6-cylinder engines, in-line 5-cylinder engines and in-line 4-cylinder engines.

4. In recent years, most of the newly developed cars of the world's major automobile companies adopt four-valve structure. In a four-valve valve, each cylinder has two intake valves and two exhaust valves. The four-valve structure can greatly improve the suction and exhaust efficiency of the engine, and most of the cars use four-valve technology.

5. In addition, after being equipped with turbocharging technology, the power and torque of the Bora cylinder engine can also reach the level of ordinary 6-cylinder engine.

Cylinder: A cylindrical metal part that guides the piston to reciprocate in a straight line in the cylinder. Air in the engine cylinders by expansion converts thermal energy into mechanical energy; The gas is compressed by the piston in the compressor cylinder to increase the pressure.

The cylinder of the engine refers to the cylinder cylinder that carries the movement of the piston. At the same time, it is a combustion chamber for mixed gas combustion.

If you take the engine apart, you will find several large round holes with pistons in them, and this round hole is the cylinder. Single-cylinder engines have only one round hole with pistons, two-cylinder engines have two, three-cylinder engines have three, and four-cylinder engines have four.

The cylinder is also the combustion chamber of the engine.

The core components of the engine. Parts for gasoline combustion. Gasoline burns inside and bursts out, which pushes the piston into motion.

It is the cylinder, which has a piston crank arm, which is the source of power for the car.

Hello, the cylinder is the combustion chamber,

The cylinder of the engine is translated from a foreign language. The original text is "cylinder", which literally translates to cylinder, cylinder; Cylinders, pump bodies. In fact, it is composed of a "cylinder head" cylinder head and a "cylinder liner" cylinder liner, which looks very similar to our cylinder when turned upside down, hence the name.

At the moment, it doesn't seem to have much to do with our original tank except for its shape. In particular, the solid material and function are completely different.

What we generally refer to as jars is large-mouthed and often neckless pottery. It's a phonetic character. 形自缶 (fǒu), sound from work.

缶 refers to pottery. "工" means "construction site". "缶" and "工" are combined to mean "pottery containers used on construction sites".

Original meaning: large pottery containers, often used in civil engineering sites, used to hold rice and water.

The cylinder of the engine refers to the engine combustion chamber composed of the "cylinder head", the "cylinder liner" cylinder liner and the "piston" piston, which is generally made of metal, and the function is to convert the thermal energy of fuel combustion into mechanical energy.

However, in order to withstand high temperatures, the latest engines also have engine parts made of ceramic materials, although the performance of this kind of ceramics and ancient pottery is not the same, and it is not widely used at present, but it is indeed close to the origin of the cylinder in terms of material. Let us have to admire the foresight of our predecessors in translation.

The piston cylinder increases the amount of combustion, and the power is also great, I don't understand.

The cylinder of the engine refers to the cylinder. The engine has several cylinders. The sum of the working volumes of all cylinders is called engine displacement and is measured in liters (L).

Engine displacement is one of the most important structural parameters, and it is more representative of the size of the engine than the bore and number of cylinders. Many of the engine's indicators are closely related to the displacement volume. The larger the engine displacement, the more energy is released per unit of time, and the better the dynamics.

The number of cylinders commonly used in the engine is cylinder. Engines with a displacement of less than 1 liter usually have 3 cylinders, 1 liter is usually a 4-cylinder engine, about 3 liters is 8 cylinders, and more than 12 cylinders are used. At the same bore, the more cylinders, the larger the displacement, and the higher the power.

Under the same displacement, the more cylinders, the smaller the bore, the higher the speed, and the greater the lifting power.

On the side of the timing belt is the first cylinder, and it is also the cylinder where the ignition sequence does the work for the first time.

The position of the first cylinder is different for different engines, for example, the engine of the Isuzu DB58T is the first cylinder from the fan, while the engine of the German MAN type is the first cylinder on the flywheel side. The technical parameters of various engines are different.

On the side of the timing belt is the first cylinder, and it is also the cylinder where the ignition sequence does the work for the first time.

Number of engine cylinders: The number of cylinders commonly used in automobile engines is cylinders. Engines with a displacement of less than 1 liter are commonly used in three cylinders, 1 liter is generally a four-cylinder engine, engines of about 3 liters are generally 6 cylinders, about 4 liters are 8 cylinders, and 12-cylinder engines are used for liters and above.

Generally speaking, under the same bore, the more cylinders, the larger the displacement, and the higher the power; Under the same displacement, the more cylinders, the smaller the bore, and the speed can be increased, so as to obtain greater lifting power.

The introduction of the engine principle is as follows:

This makes the piston smaller and easier to move, so that the engine can rotate more flexibly. However, in order to increase the rotational speed, it is necessary to increase the power, but the upper limit of the number of rotations cannot be changed to ensure a balance between durability and efficiency. In short, with more cylinders, the engine will run more flexibly and be less noisy.

Generally, normal family cars are 4-6 cylinders, and luxury models are also due to the trend of energy saving and emission reduction and green environmental protection, and the number of cylinders of many models is also being lowered in order to reduce displacement. The number of cylinders is suitable, not how many. As long as the vehicle has the right engine for itself, there is no need to worry about the number of cylinders.

In the same way that the V-engine has a cylinder relative to the left front of the gearbox, the in-line engine has a cylinder relative to the front of the gearbox.

The engine cylinder refers to the cylinder block of the engine, because the engine cylinder block is in the first position of the engine, so it is generally called the cylinder.

The middle cylinder, also known as the cylinder block, is the main body of the engine, and the cylinder is arranged in the middle cylinder, which contains the installation and arrangement of the waterway and some shafts.

Cooling method. In order to ensure that the cylinder surface can work properly at high temperatures, the cylinder and cylinder head must be cooled at all times. There are two cooling methods: one is cooled with coolant (water cooling); The other is cooled by air (air cooling).

Water cooling is often used in automobile engines. When the engine is cooled with water, there are cavities filled with coolant around the cylinder and in the cylinder head, called water jackets, and the water jackets on the cylinder block and cylinder head are interconnected.

When the engine is cooled with air, 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. Generally, the cylinder block and crankcase of air-cooled engines are cast separately.

The first cylinder of the engine refers to the first part of the pulley. Even the first cylinder can also be used to test the data flow of the injector. In the case that the cylinder is not working, it is necessary to check whether the ignition system is ignition, whether the fuel injector is working properly and whether the atomization is normal.

Test whether the cylinder pressure is normal, and the normal cylinder pressure is more than 8. I hope this service can help you, if it is helpful to you, I look forward to your praise and attention. The car master is here to help.

Which cylinder is the first cylinder of the engine, and how to determine it?

Hello, this question can give you a perfect reply, wait for me to sort out the information, I'm typing, 2-3 minutes, don't finish.

Even the first cylinder can also be used to test the data flow of the injector. In the case that the cylinder is not working, it is necessary to check whether the ignition system is ignition, whether the fuel injector is working properly and whether the atomization is normal. Test whether the cylinder pressure is normal, and the normal cylinder pressure is more than 8.