The pedal of the motorcycle is 150CC, and the engine compression ratio is 9 2 1, what type of oil is

The compression ratio is as follows: No. 90.

The compression ratio is between 93.

The compression ratio is above: No. 95.

If you're not a fierce driver, you can take it a little lower. In that case, however, you will need to add some injector cleaner once in a while (about every 3,000 to 5,000 km). Even so, it is much more cost-effective than paying more than a dollar per liter of oil.

No. 95 oil. The compression ratio of the motorcycle engine is: 1, using 97 gasoline, 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.

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 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. In modern times, the car body is mainly steel structure or light metal structure.

Motorcycle engine compression ratio: 1, plus 93 (or 92) or more gasoline, including 97 (95) can be used, but the most suitable is 93 gasoline. The level of gasoline label does not represent the quality of the oil or whether it is clean or not, but represents the octane number of the anti-knock resistance, and the engine with a high compression ratio is relatively easy to detonation, so it is necessary to use high-sized gasoline, and the general compression ratio is in:

For engines above 1, 97 (95) gasoline is used for the appropriate number, and 93 gasoline is the most suitable for the engine below 1, and the compression ratio is not so high.

Motorcycle engine compression ratio 11:1,98 gasoline should be used, and engines with high compression ratios are relatively more prone to knocking, and high gasoline with better knock resistance is required, at least 95 gasoline.

To illustrate the technical parameters of an engine, it can be roughly marked by the magnitude of power and torque, but there are many factors that affect power and torque output, and one of the important factors is the compression ratio of the engine.

Compression ratio definition.

The ratio of the total cylinder volume to the combustion chamber volume of the internal combustion engine is an important structural parameter of the internal combustion engine. When the piston is at the bottom dead center, the cylinder has a maximum volume, which is represented by VA; The volume in the cylinder when the piston is at the top dead center is called the combustion chamber volume and is expressed in VC.

Generally speaking, the engine with a compression ratio between should be 90 93 gasoline; The compression ratio should be between 90 93 gasoline; The compression ratio should be between 93 95 gasoline; The compression ratio between 95 and 97 gasoline should be used, but it is not absolute, such as.

An example of a high-compression ratio engine – Mazda Skyactiv (SKYACTIV) Mazda SKYACTIV-G engine.

The difference: up to 14:1 compression bit in gasoline engines has technology:

4-2-1 exhaust, unique design combustion chamber, lightweight structure, VVT plus No. 93 can also be very easy. The relevant data will be clearly indicated in the manual of each car, and everyone must read the manual carefully when buying a new car.

Look at the manual plus ah, 92 or 95, it's too much to say that you want to add 98, my motorcycle manual says 97 or more, I'll add 95.

The minimum of 93, 90 is added for fear of engine knocking.

OK. If the compression ratio is less than 10:1, there is no need to add 97 gasoline, and 93 gasoline is the most appropriate. The engine with a compression ratio of 10:1 can use 97 or 93 gasoline, and the manual of this car generally requires the use of 93 or more gasoline.

First, the compression ratio between the engine should be 90 93 gasoline;

Second, the compression ratio should be between 90 93 gasoline;

3. The compression ratio should be between 93 and 95 gasoline;

Fourth, the compression ratio should be between 95 97 gasoline.

OK.

Usually, the compression ratio of 7 5 8 0 should be used 90 car gasoline; The compression ratio is 8 0 8 5 should be used 90 93 car gasoline; The compression ratio is 8 5 9 5 should be used 93 95 vehicle gasoline; The compression ratio is 9 5 10 should be 95 97 car gasoline. Generally, the compression ratio can be found in the manual, and in addition to the manual, the manufacturer will also mark the recommended fuel label on the inside of the fuel tank cap. The owner should strictly follow the different compression ratios of the automobile engine and choose the corresponding grade of automotive gasoline in order to make the engine play the best performance.

If the compression ratio is 10:1, you can use 97 gasoline.

If the compression ratio is small, you can use a slightly lower gasoline grade. If the compression ratio is very high but a low grade of oil is used, there is a possibility of detonation, which means that the cylinder has not moved to the top dead center, that is, before the cremation plug is not ignited, the mixture has been compressed and ignited, which is very bad for the engine. On the contrary, the high-grade oil used in the vehicle with a low compression ratio will cause the mixture to be ignited before it has been compressed to a suitable critical ignition plug, which will naturally lead to poor combustion, easy carbon deposit, and the car is not energetic.

The motorcycle has a compression ratio of 13:1 and can choose to add 98 gasoline.

The engine compression ratio of a motor vehicle is the most important parameter in determining the choice of gasoline grade. The manufacturer's recommended gasoline grade is the result of a combination of stability, comfort and economy. So you only need to add gasoline according to the gasoline number recommended by the manufacturer.

If high-grade gasoline is used for a long time, it can also cause harm to the engine. It's not that the higher the label, the better the engine. When buying a car, the compression ratio must be marked on the vehicle factory manual.

The higher the compression ratio, the more high-grade gasoline should be used, as evidenced by turbocharged and Atkinson cycle engines.

Introduction to the compression ratio of motor vehicles:

High-grade oil burns slowly, and the slow combustion rate will cause the engine power to drop and the temperature to rise, which is not a good thing for the engine. Choosing the right oil not only improves the power, but also reduces fuel consumption, and the engine is smooth, the power is the best, the temperature is right and the lubrication is good.

There is also no absolutely uniform standard in academia to specify that the compression ratio corresponds to the gasoline number of this spare stove. With the widespread use of knock sensors and automatic ignition advance angle adjustment technology, it is also possible to use lower grade fuel in high-compression ratio vehicles.

Summary. Add 92 or 95, first of all, it depends on whether the car can use 92 oil (the fuel tank cap is indicated). Then according to the compression ratio of the engine to decide the oil number to add, the compression ratio of 10:

Both engine 1 and 92 gasoline are available. If the compression ratio is lower than 11, you can use 92 gasoline, and if the compression ratio is higher than 11, you can use 95 gasoline.

What oil to add to motorcycle compression ratio 10:1, 92 or 95 is better?

Add 92 or 95, first of all, it depends on whether the car can use 92 oil (the fuel tank cap is indicated). Then according to the compression ratio of the engine to determine the oil number, the compression ratio of 10:1 engine 92 and 95 gasoline can be used.

If the compression ratio is lower than 11, you can use 92 gasoline, and if the compression ratio is higher than 11, you can use 95 gasoline.

1. Composition difference. Gasoline 92 is made up of 92% isooctane and 8% n-heptane, while gasoline 95 is made up of 95% isooctane and 5% n-heptane. The higher the purity of isooctane, the stronger the anti-knock performance of gasoline, and the higher the relative price.

2. Stability difference. No. 95 gasoline is particularly stable, and No. 95 gasoline is easier to burn, No. 92 gasoline has an octane number of 92 percent, and the octane number of No. 95 gasoline is 95%, and No. 95 gasoline is particularly easy to burn, so it is right to say that it is more resistant to burning. The two oils cannot be mixed and matched, and the gasoline mixture will cause the engine to be bad, and it will also have a great impact on the life of the engine.

3. Differences in applicable models. When choosing No. 92 and No. 95 gasoline, please add it according to the instructions for using the car, generally about 100,000 cars, adding No. 92 gasoline is enough, and 300,000 cars plus No. 95 gasoline can meet the needs of the engine.

You should add 92. I hope mine is helpful to you I hope you can like it I wish you a happy life Thank you for your attention.