What does motorcycle v cylinder 4 cylinder mean, the advantages of motorcycle v cylinder engine

Hello: The picture below shows the V-cylinder.

Double-cylinder, V-shaped is called V-cylinder, and there is a row of cylinders, which is a row of V-cylinders that increase speed faster than four-cylinders.

But not as fast as the four-cylinder one.

The picture above shows a four-cylinder.

Parallel cylinders, with in-line cylinders are the same meaning

First of all, the sound of the straight 4 cylinder is good, because the 4 pistons of the straight 4 cylinder work together in groups of two, and the speed is very high.

I hope the above reply is helpful to you, hopefully.

1. Detonation, commonly known as knocking cylinder and calling rod. Detonation is an abnormal combustion phenomenon that occurs during the combustion of an engine. To put it simply, "knocking" is a phenomenon of abnormal combustion of the engine.

Detonation is an abnormal pressure in the combustion chamber caused by abnormal combustion. When the engine knocks, it makes a knocking sound. The slight discontinuous knocking sound is quite crisp, somewhat similar to the sound of tapping a triangle.

In the event of severe and continuous detonation, the engine will have a "mile-mile" sound, and the engine will also be obviously weak at this time.

1. There is an irregular metal knocking sound of "clang", "click" and "dangdang" in the engine.

2. Engine tremor.

3. The engine temperature is too high.

4. The fuel combustion is incomplete, and there is black smoke in the exhaust gas.

5. The engine power decreases.

6. Increased fuel consumption.

7. During normal driving, the speed suddenly changes inexplicably.

Second, the main reasons.

1. The ignition angle is too advanced: in order to make the piston get power immediately after entering the power stroke after the end of compression top dead center, the piston is usually ignited in advance before the top dead center.

Because it takes a while from ignition to complete combustion). Ignition too early will cause most of the oil and gas to burn when the piston is still compressing the stroke, and the unburned oil and gas will be subjected to great pressure and spontaneous combustion, resulting in detonation.

2. Excessive carbon deposition in the engine

Excessive carbon deposition in the combustion chamber of the engine will not only increase the compression ratio (high pressure), but also produce high temperature hot spots on the surface of the carbon deposit, causing the engine to knock.

3. The engine temperature is too high.

If the engine is too hot, the inlet temperature is too high, or the engine cooling water is poorly circulated, which will cause the engine to detonate due to high temperature.

4. The air-fuel ratio is incorrect

Too thin the fuel-air mixing ratio will increase the combustion temperature, and the increase in combustion temperature will cause the engine temperature to rise, of course, it is easy to knock.

5. The octane number of fuel is too low

The octane number is an indicator of the knock resistance of the fuel, and the higher the octane number, the stronger the knock resistance. Engines with high compression ratios have higher pressure in the combustion chamber, and are prone to knocking if fuel with low knock resistance is used.

3. Inspection and maintenance.

1. Detect the change of engine combustion chamber pressure; Detect the vibration frequency of the engine block; Detection of combustion noise of gas mixtures.

2. The measurement accuracy of directly detecting the pressure change of the combustion chamber to detect the vibration of the engine is high, but the sensor is difficult to install, and the durability is poor, so it is generally used for measuring instruments, and the pressure detection sensors in practical applications are indirect detection type.

3. The fastest and most effective way to suppress detonation is to delay the ignition advance angle and reduce the combustion pressure. Therefore, the working principle of the knock sensor is that when the engine knocking is detected, the ignition advance angle will be delayed to the ignition time when the detonation will not be detonated, and then the ignition will be slowly restored in advance when the engine does not detonation.

1. Only 2 valves (1 intake, 1 exhaust) work, to achieve the best combustion at low and medium speeds, strong acceleration when the locomotive starts, and abundant torque when cruising.

2. After the speed reaches 6400rpm, the 4 valves begin to return to full load. Optimal combustion at high revs is achieved, and the locomotive exhibits excellent acceleration performance.

3. At medium and low speeds, the valve stem passes through the hole on the switching pin set inside the tappet. Even if the camshaft rotates and the tappet moves up and down, the valve remains at rest.

4. After the speed reaches 6400rpm, the switching pin slides under the action of hydraulic pressure. The switching pin makes the valve stem and [tappet] one, and the camshaft rotates to drive the valve into the working state.

1. The V-cylinder can reduce the engine heightTherefore, it can be made into a torsional engine with a small bore and a large stroke.

2. The width of the V cylinder can be reducedto reduce the impact of motorcycle width on maneuverability.

3. The V-cylinder can be air-cooled

4. The V-cylinder can reduce the vibration(than synchronous twin cylinders).

5. The V-cylinder can coordinate the ignition angle to improve the torque(Compared with asynchronous twin cylinders) disadvantages: V cylinders make the upper body of the engine longer, so it is not suitable for sports cars, if it is made into a large diameter and short stroke, it loses the significance of strong and low torque of V cylinders) 2V cylinders are the same as asynchronous twin cylinders, and there is a problem of ignition angle imbalance (much better than asynchronous) 3V cylinders are complex to assemble, and it is not good to maintain and summarize the torque to be V cylinders, and to have a short body, you have to combine twin cylinders.

Tensile strength: The compact size brings another advantage over the more widely used in-line fours. The V4 is built to be very robust and can provide stiffness and tensile strength that cannot be matched by in-line fours and V-twins.

Therefore, the V4 engine is ideal for motorcycles that use this engine as a stressed member. In this way, the engine can now withstand some of the stress of cornering, acceleration and braking. Since the engine can help take on so much riding load, the frame can be smaller, and auxiliary structures such as the swingarm and rear subframe can now be bolted directly to the engine.

If the displacement of the parallel twin cylinders is made, it will be affected, and if the displacement is too large, the cylinder will be large, and the parallel will be too prominent. It can be made into a V-cylinder to maximize the **, which is most suitable for the narrow space of the motorcycle. Harley-Davidson motorcycles have a displacement of two liters at every turn, and how wide an engine would be if they were parallel twins.

And the V-cylinder can be made air-cooled, but to be parallel to the twin cylinders, it must be made water-cooled, you think about how many accessories are added to the water cooling. The main thing is to save space and have better heat dissipation.

Space-saving, powerful, good heat dissipation and low fuel consumption.

Motorcycle V lacks an engine at any price.

Powerful and fuel-efficient. Space-saving.

1. The composition is different.

Twin cylinder: Twin cylinder engine refers to an engine with two cylinders, which is composed of two identical single cylinders arranged on a single body and sharing a crankshaft to output power.

Four-cylinder: A four-cylinder engine is an engine that consists of four cylinders.

2. The cost is different.

Twin cylinder: The twin cylinder engine has low manufacturing cost, small size, and relatively simple maintenance in the later stage, so it is adopted by many mainstream motorcycles.

Four-cylinder: The structure of the four-cylinder engine is very complex, and the requirements for the manufacturing process are also extremely high, due to the high cost, as far as the domestic market is concerned, there are only a handful of motorcycles equipped with four-cylinder engines.

3. The performance is different.

Twin cylinders: With two cylinders working together, the operation is smooth, the top speed is high, and the speed is fast, but the performance is not as high as that of the four cylinders.

Four-cylinder: Four-cylinder is the pursuit of the vast majority of performance cars, four cylinders work together, the engine works smoothly is very high, the vibration is small, the exhaust sound is continuous, the engine parts are lightweight, and the combustion efficiency is high, which is conducive to the play of high-speed power.

The number of cylinders refers to the number of cylinders in the motorcycle engine, and the cylinder refers to the cylinders of the engine.

Take the single-cylinder engine as an example, the single-cylinder engine is the simplest of all engines, it has only one cylinder, is the basic form of the engine, and the same displacement of the multi-cylinder engine compared with the slow down, the single-cylinder engine only one set of parts in operation, so the inertia force of the moving parts can not be counteracted, so the vibration is large. The higher the rotational speed, the greater the vibration.

The size of the moving parts of the single-cylinder engine is relatively large, which is not conducive to the increase of the engine speed, and it becomes more and more obvious with the increase of the engine displacement. Therefore, the larger the displacement of the single-cylinder engine, the smaller the liter power, but the stronger the pulsation of the single-cylinder engine.

The picture shows a V-shaped 2-cylinder motorcycle engine

The cylinder you are talking about is the cylinder, in the motorcycle engine, the power of the engine is transmitted from the work of the cylinder.

To put it simply, if there is only one cylinder, only one stroke of the four strokes will do the work, and if there are two cylinders, when the other cylinder does not do the work, this one will do the work, so the power is greater than the original.