At present, the new energy vehicle market is in the ascendant, and many new models have been launched to seize the market, but the mainstream models currently sold in the market are still fuel vehicle, I believe that fuel vehicle will be in the leading position in the future for quite a long time. Therefore, refueling vehicles in use is like "everyday" accompanied by every vehicle owner, so will you really refuel? Through the introduction below, you can make an intuitive judgment!
1 What are the meanings of gasoline labels?
At present, the commonly used gasoline labels in China mainly include No. 90, No. 93 and No. 97, while the local labels implemented in Beijing and Shanghai are No. 89, No. 92 and No. 95 respectively. Gasoline is mainly composed of isooctane and n-heptane. At present, domestic gasoline is upgraded by adding anti-knock compound. Isooctane has a good anti-knock property, and its octane number is set to 100; The difference of n-heptane is anti-knock property, knock is easy to occur in gasoline engines, and its octane number is set to 0.
2 is the higher grade gasoline better?
In the actual car, many car owners like to add a grade of gasoline higher than the designated grade gasoline, thinking that this can gain more powerful power, in fact, it will not be obvious in actual use. This is because the power of the engine is mainly determined by the compression ratio. Blind use of high-grade gasoline sometimes not only can't get better power, but also causes the phenomenon of acceleration and weakness when it is serious.
Therefore, it is best to select the gasoline label according to the model of vehicle recommend. Because the manufacturer has done many experiments when producing engines, and the electronic system of the vehicle has also been set accordingly according to its characteristics, and blindly adding high-grade fuel will not increase the power of the vehicle, on the contrary, it will affect the use of vehicles.
3 What are the meanings of gasoline labels?
In fact, according to the compression ratio of the vehicle engine, it is the most accurate to select the appropriate gasoline label. Generally, no. 90 vehicle gasoline should be selected when the compression ratio is between 7.5 and 8.0; No. 90-93 vehicle gasoline should be selected when the compression ratio is between 8.0 and 8.5; if the compression ratio is between 8.5 and 9.5, 93-95 gasoline should be selected; If the compression ratio is between 9.5 and 10, 95-97 gasoline should be selected. The marking of fuel oil also involves the problem of engine ignition timing. Low-grade gasoline rate of burning fast, ignition angle should lag; High-grade fuel rate of burning slow, ignition angle should be advanced.
It is worth noting that turbo charged engine has strict requirements on fuel, and the same compression ratio has higher requirements on fuel. In order to avoid the occurrence of engine knock, the compression ratio of supercharged engines is often lower than that of naturally aspirated engines. In view of the strict requirements of turbo charged engine on fuel, it is generally recommend to use No. 95 or No. 97 gasoline.
Review
In fact, the characteristics of the vehicle itself have been determined. If you do not modify the use characteristics of the vehicle without professional modification, you should not change the use characteristics of the vehicle without authorization. The so-called good steel is used on the cutting edge. Some money will work if it is not spent, we still need to use vehicles scientifically and reasonably.
