When it comes to fuel tanks, the choice of material is often more critical than the volume parameter. Some may argue that a fuel tank is merely a container, and as long as it doesn’t leak, the material isn’t significant. This perspective, however, is misguided.
Iron Tanks
Iron tanks have been a staple in truck manufacturing since the inception of these vehicles. Their primary advantages include:
- Cost-Effectiveness: Iron is relatively inexpensive, making it a popular choice for many manufacturers.
- Strength: Iron tanks possess high strength, allowing them to withstand significant impacts without easily breaking. This durability is crucial for trucks that traverse roads for extended periods and face the constant threat of accidents.
However, iron tanks have a notable drawback: they are prone to corrosion. Over time, this can lead to rust forming on the interior, contaminating the fuel.
Plastic Tanks
Plastic fuel tanks, also known as composite tanks, are valued for their cleanliness. They do not pollute the fuel, making them ideal for vehicles equipped with electronically controlled engines. In the past, brands like Faw trucks widely adopted plastic tanks, but this trend has declined significantly. Today, only some light trucks still utilize plastic fuel tanks.
Despite their advantages, plastic tanks have limitations:
- Environmental Suitability: They are less suitable for diverse climatic conditions, becoming brittle in extremely cold temperatures, which increases the risk of breakage and leaks.
- Heat Resistance: In emergency situations, plastic tanks cannot withstand direct heat, making it difficult to unfreeze fuel.
Aluminum Alloy Tanks
Aluminum alloy fuel tanks are often highlighted by salespeople when promoting vehicles. The benefits of aluminum tanks include:
- Corrosion Resistance: Aluminum has excellent resistance to corrosion, making it ideal for high-pressure common rail engines that require clean fuel.
- Manufacturing Simplicity: The production process for aluminum tanks is straightforward; they can be welded after being shaped from aluminum plates, which is simpler than manufacturing plastic tanks.
- Ductility: Aluminum alloys exhibit great ductility. Even under significant external impacts, aluminum tanks are less likely to break and leak, even if they become deformed.
Given these advantages, aluminum alloy fuel tanks have largely replaced iron and plastic tanks as the preferred choice for fuel storage in modern trucks.
