Is it better to have a car engine with aluminum or iron

In fact, the cylinder heads of many gasoline engines are made of aluminum, and the main difference is that some cylinder blocks are still made of cast iron. In general, the all-aluminum engine has good heat dissipation and light weight, which is conducive to reducing fuel consumption, but the wear resistance and vibration absorption performance of the cylinder block are poor. The advantages of cast iron cylinder block are wear resistance and vibration absorption, and the disadvantages are large weight, poor processability, and the weight of the engine is too large, which is not conducive to reducing fuel consumption.

Which is better, cast iron or all-aluminum for a car engine, and what exactly is the difference?

When a newbie buys a car, which is better, cast iron or all-aluminum for a car engine? What is the difference between cast iron and all-aluminum car engines? After reading it, you will understand the car engine Toyota Mitsubishi.

According to the development of history, the first to appear was the cast iron engine, and then the aluminum alloy engine. The manufacturing process of cast iron engines is lower than that of aluminum alloys, but it does not mean that cast iron engines are worse than aluminum alloy engines, in fact, the two types of engines have their own advantages.

Cast iron engine: The advantage is that the manufacturing technical conditions are low, and the process is mature, and the cast iron engine can withstand the working environment of high temperature and high pressure in the actual working process. The disadvantage is that the engine is too heavy, and the heat dissipation is not as good as that of aluminum alloy.

Aluminum alloy engine: the advantage is that it is light in weight, effectively reduces the weight of the engine, and has good heat dissipation, in addition, the manufacturing process requirements are slightly higher, and the manufacturing cost is more expensive than that of cast iron engines. The disadvantage is that the engine is easy to deform when it is heated, resulting in a large gap between the cylinder inner wall and the piston under long-term operation, and a large power leakage.

In addition, the aluminum alloy engine should not squeeze the power of the engine too much. However, after the improvement of technology, the high temperature resistance of aluminum alloy engines is no worse than that of cast iron.

Each has its own advantages. The cylinder head of a cast iron engine is actually made of aluminum alloy, but the cylinder block is made of cast iron. Compared with all-aluminum engines, the block of a cast iron engine has a stronger thermal load capacity, which is more conducive to improving engine power.

The engine is a machine that converts chemical energy into mechanical energy, and its conversion process is actually the process of the work cycle, simply put, it is through the combustion of fuel in the cylinder, generating kinetic energy, driving the reciprocating motion of the piston in the engine cylinder, thereby driving the connecting rod connected to the piston and the crank connected with the connecting rod, making a reciprocating circular motion around the center of the crankshaft, and outputting power.

1. Body: It is the assembly base of each part of the engine. It includes the cylinder head, cylinder block, lower crankcase (oil pan). The cylinder head and the inner wall of the cylinder block together form part of the combustion chamber. Many parts of the body are part of other systems.

2. Crank connecting rod mechanism: It is a mechanism used by the engine to generate and transmit power, through which the linear reciprocating motion of the piston is transformed into the rotary motion of the crankshaft and output power. It includes pistons, piston pins, connecting rods, crankshafts with flywheels, and cylinder blocks, among others.

4. Fuel supply system: The fuel supply system of gasoline engine includes gasoline tank, gasoline pump, gasoline filter, air filter, carburetor, intake pipe, exhaust pipe, exhaust muffler, etc. Its function is to mix gasoline and air into a suitable combustible mixture and supply it to the cylinder for combustion, and exhaust the exhaust gases generated by combustion out of the engine.

5. Cooling system: mainly including water pump, radiator, phoenix fan, water distribution pipe, cylinder block and water jacket in the cylinder head. Its function is to dissipate the heat of high-heat parts into the atmosphere to ensure the normal operation of the engine.

6. Lubrication system: including oil pump, pressure limiting valve, lubricating oil channel, filter collector, oil filter and oil radiator, etc. Its function is to supply lubricating oil to the friction parts to reduce the friction resistance between them, reduce the wear of the parts, and partially cool the friction parts and clean the friction surface.

First of all, look at the cast iron engine, the cast iron engine is made of iron as the name suggests, and it is definitely better than the all-aluminum engine in terms of strength, because the engine must have a good ability to withstand high temperature and high pressure, and the cast iron engine has these two points! With excellent materials, it's easy for the engine to unleash its full power! But the disadvantage of the cast iron engine is also prominent, that is, it is too heavy!

Cast iron engines and all-aluminum engines are just the opposite, the strength of iron is higher than that of aluminum, so cast iron engines will be particularly resistant to high temperature and high pressure, so the power will be relatively large, and cast iron engines and their are not easy to be corroded, and not easy to deform. The advantages of cast iron engines are deformation resistance, high pressure and high temperature resistance, strong corrosion resistance and relatively low cost.

And then open the aluminum engine! Since the weight of the cast iron engine is too large, the weight of the aluminum engine is very light, and the aluminum engine is easier to dissipate heat, and the fuel consumption is much better than the cast iron engine, but the disadvantages of the aluminum engine are also many, such as the hardness and strength are not as good as the cast iron engine, and the volume is larger, the cost is higher, and the ** is more expensive!

The advantages of the all-aluminum engine are light weight, easy processing, good heat dissipation, and low fuel consumption. We all know that aluminum is much lighter than iron, and the engine is not a small object, so the all-aluminum engine is much lighter than the cast iron engine, the engine is lighter, the weight of the car itself is lighter, the weight of the car will affect fuel consumption, so the all-aluminum engine is more fuel-efficient than the cast iron engine, and now many people are concerned about fuel consumption, so if you want to save fuel, the all-aluminum engine is a good choice. Moreover, the heat dissipation effect of aluminum will be better, especially during the operation of the engine, the temperature increase is particularly powerful, so the all-aluminum engine will dissipate heat better than the cast iron engine, and it will be less easy**.

The disadvantages of all-aluminum engines are large size, poor corrosion resistance, poor strength, and large friction coefficient. Because the strength of aluminum is less than that of iron, an all-aluminum engine needs more aluminum if it wants to achieve the strength of a cast iron engine, so it will be larger in volume and less compact than a cast iron engine. Moreover, aluminum is extremely corrosive when exposed to high temperatures, so all-aluminum engines will be more likely to be corroded and less durable, and all-aluminum engines will be more prone to deformation because of their poor strength, and the intermediary of aluminum is relatively high, so all-aluminum engines will be a little more expensive.

The price of all-aluminum engine models will generally be higher, because all-aluminum engines will be more sophisticated than cast iron engines, and the maintenance cost in the later stage is higher, and the cost of cast iron engines is cheaper, and the maintenance cost in the later stage is also lower.