What is the difference between 92 gasoline and 93 gasoline

The U.S. gasoline standard is formulated according to the "Motor Act", while the domestic gasoline standard is formulated according to the "Research Act".

The octane number represents the anti-knock performance of gasoline, and the "motor method" octane number measurement conditions are harsh, which is closer to the anti-knock performance of gasoline during high-speed and heavy-load driving, while the "research method" octane number determination conditions are mild, reflecting the anti-knock performance of gasoline when the car is driving slowly. For the same gasoline, the study octane number is about 0 15 units higher than that of the motor method.

The research shows that the Chinese research method number 90 is equivalent to the American motor law number 82; No. 93 of the Chinese Research Method is equivalent to No. 85 of the U.S. Motor Law; The Chinese Research Method No. 97 is equivalent to the U.S. Motor Law No. 87.

In other words, the best 97 gasoline made in China is only equivalent to the worst quality 87 gasoline in the United States.

And 93 are the determination of the domestic "research method", 93 is the national standard, 92 is the national standard Beijing, Guangzhou, Shanghai and other places have been implemented, but 92 is a few professional indicators slightly higher than 93, mainly environmental protection and convenience requirements are a little higher, others, you put 92 directly as 93 I have no opinion.

For today's family cars, there is no difference at all, it is the same oil, which is slightly environmentally friendly.

Difference Between 93 Gasoline and 92 Gasoline:

1. The content of isooctane and n-heptane is different: No. 93 gasoline contains 93% isooctane and 7% n-heptane; No. 92 gasoline contains 92 percent isooctane and 8 percent n-heptane.

2. The octane number is different: the octane number of No. 93 gasoline is 93; No. 92 gasoline has an octane rating of 92;

3. The actual use is different: No. 93 gasoline is the gasoline specified in the national IV standard; No. 92 gasoline is the gasoline of the National V standard. Gasoline is a volatile and flammable hydrocarbon mixture liquid that is fractionated, cracked or cracked from petroleum, and can be used as fuel.

The level of gasoline marking only indicates the size of the octane number of gasoline, and different grades of gasoline should be selected according to the different compression ratio of the engine. Mid-range cars with compression ratios between should generally use 93 gasoline; Cars with a compression ratio greater than 97 should use 97 gasoline. The compression ratio of domestic cars is generally above 9, and it is best to use 93 or 97 gasoline.

The main basis for the selection of gasoline is the compression ratio of the engine, and the compression ratio and other parameters have been set in the engine computer, so the owner must choose gasoline in strict accordance with the requirements of the instructions, if the compression ratio of the engine is set low, and blindly use the high-grade gasoline, it will produce the phenomenon of acceleration weakness in driving, and at the same time cause the situation of burning oil.

The numbers 92 and 93 represent the octane number of gasoline, that is, the anti-knock resistance of gasoline. No. 93 gasoline is the gasoline specified in the National IV standard, and the National V standard is changed to No. 92 gasoline. Compared with No. 93, No. 92 has lower anti-knock resistance, but other indicators in gasoline such as sulfur, benzene, aromatics, manganese, etc. are lower and more environmentally friendly.

The most significant changes in gasoline 92 and gasoline 93 are the reduction of the sulphur limit from 50 mg/kg to 10 mg/kg and the reduction of the manganese limit from grams per litre to grams per litre.

The higher the fuel grade, the slower the oil burns, the lower the combustion knock, and the higher the compression ratio is required for the engine; On the contrary, the combustion speed of low-grade fuel is faster, the combustion knock is large, and the engine compression is relatively low.

The following is the difference between No. 93 gasoline and No. 92 gasoline: 1. The anti-knock performance is different: the anti-knock performance of No. 92 gasoline and No. 93 gasoline is different, and the anti-knock resistance is lower than that of No. 93, but other indicators in gasoline such as sales of sulfur, benzene, aromatics, manganese, etc. are lower and more environmentally friendly.

2. The stage standards are different: No. 93 gasoline bucket is the fourth stage of national standard gasoline, and No. 92 gasoline is the fifth stage of national standard gasoline. 3. The chemical content is different

The limit of sulfur content in No. 92 gasoline was reduced from 50 milligrams per kilogram to 10 milligrams per kilogram, and the limit of manganese content was reduced from grams per liter to grams per liter. The following is the relevant introduction of gasoline: 1. The vehicle gasoline brand refers to the type of gasoline added to the vehicle, the common ones are 90, 93, 97, and from January 2012, the gasoline brand "90, 93, 97" is to be revised to "89 loss or, 92, 95".

2. The so-called No. 90, No. 93 and No. 97 unleaded gasoline refers to the fact that they contain % of the "isooctane" with strong detonation resistance, that is, they contain % of the n-heptane with poor detonation resistance. Therefore, the octane number becomes an indicator of the ability of the gasoline engine to resist knocking. The engine should be used with 97 gasoline, and if 90 gasoline is used, of course, it is prone to knocking.

It is mainly different in terms of anti-knock resistance, octane number, national standard time, and applicability.

1. The explosion resistance is different.

The ability of gasoline to resist knocking when burned in the engine, it is the main indicator of gasoline combustion performance. Detonation is caused by the improper combustion of gasoline in the engine. No. 93 gasoline has higher knock resistance than No. 92 gasoline.

2. The octane number is different.

The octane number in gasoline directly depends on the proportion of various hydrocarbons in gasoline, the number is the octane number of gasoline, 92 octane 92 and 93 gasoline are 93 octane gasoline.

3. Gasoline standards are different.

Gasoline No. 93 is the research octane number in Stage 4 motor gasoline, and Gasoline No. 92 is the definition in the Stage 5 fuel standard.