What Are Car Engines Made Of?

What are car engines made of? Some people say that this is not simple, cast iron and aluminum alloy bai! Aluminum alloy engine technology is more advanced, good heat dissipation, light weight, more advanced; Cast iron engine heat poor, heavy, is the representative of backward technology, now also use cast iron engine is to save costs, jerry-built, and so on.

So is this the case? Over the years, Chinese people have been completely brainwashed by some car companies, thinking that aluminum alloy engines are all made of aluminum alloy, and cast iron engines are all made of cast iron, so the quality difference between the two is huge.

But that's not the case at all. The engine is composed of two major institutions and five major systems. The so-called cast iron engine and aluminum alloy engine only refer to the material of the engine cylinder block, and the material of other parts are basically the same. That is to say, aluminum engines also have a lot of iron parts, cast iron engines also have a lot of aluminum parts. In order to explain the material of the car engine in detail, we might as well break down the engine and say the material of each part in detail.

1. Cylinder block: The cylinder block is the most basic part of the engine, and all other parts are directly or indirectly installed on it.

The material of the cylinder block is divided into two kinds, one is cast iron, generally use gray cast iron, now the engine to enhance the cylinder block

Strength and wear resistance, but also the use of nickel, chromium, molybdenum, phosphorus and other elements of high quality gray cast iron. Some high - strength diesels will be made of higher grade ductile or vermicular cast iron. Cast iron cylinder block strength, stiffness, wear resistance and vibration absorption capacity are very excellent, the biggest disadvantage is the weight.

And now the gasoline engine used in small cars, more use of aluminum cylinder block, or aluminum alloy cylinder block. They use aluminum alloy or aluminum magnesium alloy cast, the biggest advantage is light weight, good heat dissipation, but the strength, stiffness, wear resistance and vibration absorption capacity of the cylinder block is not as good as cast iron. So put to rest the Internet trolls who boast that aluminum engines are better.

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