What size of gasoline is best for motorcycles

When choosing an automotive oil, the compression ratio is often mentioned, and the compression ratio is often mentioned in the parameters of the car. So what exactly is the compression ratio? What does it have to do with engine performance and gasoline labeling?

Recognize the compression ratio.

The compression ratio is the ratio of the maximum stroke volume of the piston in the cylinder to the minimum stroke volume, and it is also equal to the volume ratio of the position of the top dead center and the bottom dead center of the motion stroke of the whole piston. Regardless of whether the car is equipped with a petrol or diesel engine, it is important to maintain a stable and appropriate compression ratio to keep the engine running smoothly and consistently.

At present, the vast majority of cars use the so-called reciprocating engine, simply put, in the engine cylinder, the piston does a straight line reciprocating motion over and over again, and has been circulating, so there is a certain range of movement in this cycle and continuous work stroke. As far as a cylinder of the engine is concerned, when the stroke of the piston reaches the lowest point, the position point at this time is called the bottom dead center, and the volume formed by the whole cylinder including the combustion chamber is the maximum stroke volume; When the piston moves in the opposite direction and reaches the highest point position, this position point is called the top dead center, and the volume formed is the smallest volume of the whole piston motion stroke, and the compression ratio to be calculated is the ratio of the maximum stroke volume to the minimum volume.

The higher the compression ratio, the better the power.

We know that when the gasoline engine is running, it is a mixture of gasoline and air that is sucked in, and the piston goes up during the compression process, in addition to squeezing the mixture to reduce its volume, two phenomena of vortex and turbulence also occur. When the gas in a closed container is compressed, the pressure increases with the temperature. If the compression ratio of the engine is high, the cylinder pressure and temperature generated during compression will increase accordingly, and the gasoline in the mixture will be vaporized more completely, coupled with the effect of high compression ratio, when the spark plug jumps out of the spark, the mixture can be burned in an instant, and the energy will be released, which will become the power output of the engine.

Conversely, if the combustion time is extended, the energy will be consumed and the temperature of the engine will be increased, rather than participating in the power output of the engine, so the engine with a high compression ratio means that it has a large power output.

The compression ratio determines the oil label.

What does the value of No. 90, No. 93, and No. 97 gasoline that we usually talk about?

The designation of gasoline, i.e., the ratio of the knock resistance of actual gasoline to the knock resistance of standard gasoline. The higher the grade, the stronger the anti-explosion performance. Standard gasoline is composed of isooctane and n-heptane.

Isooctane has good knock resistance, and its octane number is set at 100; N-heptane has poor knock resistance, and is prone to detonation on gasoline engines, and its octane number is set at 0. If the gasoline is marked 90, it means that the gasoline of this grade has the same anti-knock properties as standard gasoline containing 90% isooctane and 10% n-heptane.

What kind of oil does the car drink, the compression ratio has the final say. Generally, the larger the compression ratio, the higher the gasoline grade. In general, the compression ratio should be 90-93 motor gasoline; The compression ratio should be 90-93 vehicle gasoline; The compression ratio should be selected 93-95 car gasoline; The compression ratio should be 95-97 gasoline.

I've always been the number 93 anyway.

I don't know why I don't know why the car repair master told me anyway.

Number 93 is good. Of course, it would be better if you added the number 97. Good for engine life. But I think the effect is about the same. I'm using number 93.

Of course, the higher the number, the better, if you want to be economical, try 90 first, if you don't want to change to 93

The 90 will run 8 kilometers per liter more than the 93

The motorcycle can be refueled with two types, No. 92 and No. 95. The most direct factor that determines what oil to add to this car is the compression ratio of the engine.

The compression ratio is the first determining factor. Usually small motorcycles, such as small pedals and the like, the compression ratio is below 1, so adding No. 92 oil is completely enough, and some imported big trade locomotives, many cars will have a compression ratio of 11:

1 or so, so No. 95 oil is more suitable.

The difference between the two: the acceleration performance of No. 92 gasoline is very good, the power response is faster than that of No. 92 gasoline, and the vibration of the car is smaller than that of No. 92 gasoline. The difference between 92 and 95 gasoline is the difference in isooctane content. Isooctane has good knock resistance, and the higher the gasoline grade, the better the gasoline knock resistance.

After using 10 liters of gasoline, the oil circuit cleaning effect appears, and the performance is roughly equal to the effect of 95 gasoline, but slightly inferior to 95 gasoline.

The compression ratio of the engine with oil No. 95 is different.

Gasoline marking selection criteria.

The primary criterion for choosing a gasoline grade for a car is the compression ratio of the engine, which is also the core energy-saving index of contemporary automobiles. The operation of the engine is composed of the repeated movements of the cylinder "suction-compression-combustion-exhaust-suction", and the ratio of the cylinder volume of the piston at the farthest point of the stroke to the closest point is the compression ratio.

The least costly and most effective way to reduce fuel consumption is to increase the compression ratio of the engine. Increasing the compression ratio only changes the piston stroke, and the more the mixed oil and gas are compressed, the greater the reaction to its combustion, and the more fully it burns. However, the compression ratio is not easy to move, because there has to be another index, that is, the anti-knock index of gasoline, also known as octane number, that is, gasoline labeling.

The above content refers to Encyclopedia - Gasoline Labeling.

People who often drive motorcycles should know the gasoline mark of the motorcycle, mainly depending on the compression ratio of the engine of the car. Generally speaking, the gasoline mark of motorcycles is mainly divided into 95 and 92, so what kind of motorcycles are they suitable for?

What oil is good for motorcycles?

What kind of oil a motorcycle needs to be added is mainly determined by its engine. Generally speaking, 95 gasoline is suitable for motorcycles with an engine compression ratio of 1 or more, and 92 gasoline is suitable for a compression ratio of 1 or more

1 or less motorcycle. So when choosing gasoline, the higher the value, the better, but the compression ratio.

The higher the grade of motorcycle gasoline, the higher the compression ratio that is generally suitable for the engine. So you can choose 98 gasoline for the above, and it is better to choose 92 gasoline for 8 or less. Because the higher the gasoline grade, the lower its ignition point and the easier it is to ignite, so the stability is poor, so it is more suitable for motorcycle engines with high compression ratios.

Generally, motorcycles can use 92 gauge gasoline. If equipped with an EFI engine, you can use 95 gasoline. What kind of gasoline you need for your motorcycle depends on the compression ratio, and what grade of gasoline you need to add is in the manual.

It is recommended to read the instructions carefully. The octane number of gasoline varies from one grade to another, and the higher the label, the higher the octane number of gasoline. The higher the octane number, the better the anti-knock performance of gasoline.

Generally, motorcycle engines with high compression ratios need to use No. 95 gasoline to prevent engine knocking. Detonation engines are an abnormal combustion phenomenon. Four-stroke gasoline engines are known to have a compression stroke.

At the end of the compression stroke, the spark plug should ignite the combustible mixture so that the combustible mixture can burn and do work to push the piston downward.

Scooter plus 92 or 95

In fact, the engine compression ratio also depends on the refueling of the scooter, because the engine compression ratio is different for different brands and models. For example, Wuyang Honda's EFI scooter needs to add more than 92 gauge gasoline, because its compression ratio is generally below. However, adding 98 gasoline is not completely impossible.

It can only be said that with 98 gasoline, this motorcycle does not meet the requirements of explosion protection, but it will not increase the mileage of the motorcycle after use.

How much gas can you fill up on a motorcycle?

There are many types of motorcycles. In general, the fuel tank of a 125 motorcycle can hold up to 10 liters of fuel, which can support a full mileage of 500 km. However, there are also larger fuel tanks, which can reach 14 litres when fully filled.

Generally speaking, scooters and underbow motorcycles will have greater fuel consumption and less mileage.

People who often drive motorcycles should know the gasoline number added to the motorcycle, the motorcycle can add 95 gasoline, 95 gasoline is not harmful to the motorcycle, it is the most common gasoline model.

The average motorcycle is filled with 92 oil. If the motorcycle has special requirements, then you must add 95 oil, depending on what attributes your motorcycle has.

Now motorcycles,Most of them are filled with 92 gasoline and 95 gasoline, and for most motorcycles, it is enough to add 92 and above gasoline. The specific grade of gasoline used depends on the compression ratio of the motorcycle engine and the requirements on the manual. Some motorcycles have an oak in the fuel tank or fuel tank cap, and there are also instructions for the use of gasoline labeling.

If it is engine oil, it is generally above SFOils with a grade of 10W, W, W-40, etc. are acceptable.

The grade of gasoline does not represent the quality of the oil or whether it is clean, but the octane number related to the anti-knock properties of the gasoline contained in it. Engines with high compression ratios are relatively prone to detonation due to the fact that the piston does not reach the top dead center and the mixture is ignited by the high compression ratio, so high gasoline with high octane number and better anti-knock performance is required. And the compression ratio is not as high as the loss of Lu has such a high engine, and the high number of gasoline has no use and benefit.

Even in engines with low compression ratios, the use of high-gauge gasoline may produce "flame retardation", which will affect the engine performance.

Therefore, when choosing a gasoline grade, you should mainly look at the compression ratio of the engine. Generally, the engine compression ratio is below 1, and it can be suitable for the use of No. 92 gasoline, and the engine compression ratio is in:

1 or more, use 95 or 92 gasoline. Most of the common motorcycles require the use of 90 or 92 and above gasoline, that is, 92 and 95 gasoline can be used, which can meet the requirements of the engine. Using 95 gasoline does not provide more power and reduce fuel consumptionSo there is no need to blindly use high-size gasoline either.

Motorcycles can be gasoline for 90 93.

If the compression ratio is high and the gasoline grade is low, it is easy to cause knocking and damage to the engine. If the compression ratio is low, the refueling grade is too high, first, it will cause unnecessary waste, second, the anti-explosion value of the high-grade oil is high, and the compression ratio is not enough, it will cause insufficient combustion, easy to produce carbon deposits, and in the long run, it will accelerate the wear of the engine. Therefore, gasoline can be destroyed in accordance with the applicable principle, and the high grade of engine oil can replace the low grade.

Due to the different working temperatures of engine gasoline with different compression ratios, the requirements for resisting detonation are also different, the higher the engine compression ratio of gasoline with the same grade, the easier it is to produce greater detonation, so each engine manufacturer generally indicates the suitable gasoline mark of the vehicle when leaving the factory.

Generally, engines with a compression ratio of less than 10:1 can use 93 92 gasoline; Generally, the compression ratio is greater than 10, and it is recommended that 95 and 97 gasoline is more appropriate.

High compression ratio motorcycle with low fiber leather marking gasoline, will lead to low grade gasoline anti-riot is not enough, gasoline combustion is not sufficient, resulting in engine shock, power decrease, fuel consumption increase, but also cause the engine carbon deposition too much, so that the motorcycle failure rate increases, increase the user's maintenance costs, but also do not meet the purpose of environmental protection.