Why is there lead in gasoline? Detailed answer

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Why is there lead in gasoline? Detailed answer

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Why is there lead in gasoline?

Gasoline is a mixture of hydrocarbons. Its molecules are made up of hydrogen and carbon atoms. Gasoline, which is used as a motor fuel, is a mixture of several hydrocarbon liquids.

To make gasoline burn better, special additives are added to it. At a temperature of about 30 ° C, gasoline from a liquid turns into vapor very quickly. In a car engine, gasoline is mixed with air. The temperature of the engine turns the mixture into steam. The spark plug produces a spark that ignites the fuel.

Sometimes the gasoline mixture ignites too quickly. When this happens, the engine makes sounds and the engine is said to be knocking.

There are two ways to reduce engine knock. The first is to use gasoline, which is slowly flammable. Another way is to add special chemicals to the fuel that slow down the ignition. The best-known substance used for this is tetraethyl lead, or simply ethyl. This is why lead can be found in gasoline.

Fuels are classified according to how much knock they cause in the engine and are defined by octane rating. High octane gasoline produces less knock than low octane gasoline. Gasoline with an octane rating of 85 or higher is considered good enough for modern engines.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Who invented the ballpoint pen?

a) Mr Biro.
b) Mr. Bish.
c) Mr Quiet.
d) Mr Loud.

Before the era of ballpoint pens, writing was considered a rather dangerous and troublesome task. Quills had to be regularly dipped in inkwells, pens were constantly leaking, and ink (which in English is called Indian ink, "Indian ink", but invented in China) took too long to dry on paper. All of these problems were first raised in a patent filed on October 30, 1888 by a leather tanner named John J. Loud. It was he who created a pen with a rotating ball instead of a sharp tip, which continuously "bathed" in the ink coming from a special container. And although his pen still leaked, it was much more comfortable to write on the skin with it than a regular fountain pen. Unfortunately, Laud did not manage to bring his invention to mind. Otherwise, we would be talking about disposable "lauds", and not about ball "biros".

The Hungarian Laszlo Biro (1899-1985), although he studied medicine, never received a doctorate. Before seriously devoting himself to journalism, Biro tried a wide variety of activities, including hypnosis and car racing.

Puzzled by the difference in drying time between printing ink and the contents of a fountain pen, Laszlo Biro and his chemist brother Georgy tried fitting the pen with a tiny ball bearing that successfully "pulled out" the printing ink as it rotated. Thus the famous "biro" was born.

The brothers patented the invention in Hungary in 1938, and in 1940, fleeing the Nazis, they emigrated to Argentina, where they patented the ballpoint pen again in 1943. One of their first customers was the Royal Air Force of Great Britain, delighted with the excellent functionality of the "biro" even at high altitude. Soon the name "biro" became synonymous in Britain with a ballpoint pen.

The first widely sold "biros" were made in 1945. At the same time, Biro sold the license for the production of ballpoint pens to a Frenchman named Marcel Bich (Bich).

Bish named his company "BiC" and, after slightly modifying the Biro model, mass-produced an incredibly cheap six-sided plastic fountain pen.

BiC is still the world's leading manufacturer and marketer of ballpoint pens, with annual sales of 1,38 billion euros. In 2005, their 100 billionth fountain pen was sold. BiC's bestseller, the Kristall brand, sells 14 million copies a day.

As a mark of respect for Biro, Argentines - who, by the way, call fountain pens birome - celebrate National Inventor's Day on September 29, the date of his birth.

Test your knowledge! Did you know...

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