Petroleum Function

After the petrol enters the vehicle engine, through vaporizing, atmosphere mixing, compressing, lighting, the engine is driven by the piston moved by produced high temperature and high-pressure gas. That is the source of vehicle motive force.

Shake explosion and octane number

If the vapor is not able to bear high temperature and high pressure, that will produce the little explosion while deflagrating. Drivers can hear sound like the iron hammer beats the metal in succession. This kind of phenomenon is called shake explosion, which will make the temperature in the engine increase in a minute and may burn out the port, spark plug, and piston,etc.

There are different grades of anti-shake explosion ability in different petroleum products. The grading is according to the level of " octane number. " The petrol that service stations sell at present includes 92, 95, and 98 three unleaded petrol. The number represents the octane number.The higher octane number is, the stronger ability of the anti-shake explosion is.

Tips for petroleum using

The driver must use proper petrol depend on vehicle manufacturers' regulation, or the engine and performance of the automobile may be effected.

In order to satisfy different needs of different automobiles, good petrol quality must possess various kinds of the following conditions：

(1) Good anti-shake explosion ability

(2) Warm car fast

(3) Strong acceleration ability

(4) Low petroleum consumption

(5) Make the engine operate steadily and smoothly

(6) Good to starting performance

(7) Good anti-corrodent ability

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