With the widespread adoption of high-pressure common rail (HPCR) fuel systems in engines, the pressure and durability requirements of fuel supply systems have become increasingly stringent. If water or impurities infiltrate the system, the engine faces the risk of damage or even premature failure. Acting as the guardian of the fuel system, diesel filters effectively filter out water and impurities, preventing mechanical wear and ensuring the safe operation of the engine.
The structure of diesel filters is generally similar to that of oil filters, primarily divided into replaceable filters and spin-on filters. Compared to oil filters, diesel filters have lower requirements for operating pressure and oil temperature resistance. This is because the high temperature during engine operation is mainly transferred to the oil, so oil filters need higher high-temperature resistance. In contrast, diesel filters only need to ensure smooth fuel supply at normal temperatures. However, in terms of filtration efficiency, the requirements for diesel filters are significantly higher than those for oil filters.
Based on their different functions, diesel filters can be further subdivided into three main categories: diesel water separators, diesel coarse filters, and diesel fine filters.
Diesel Water Separators:
Their primary function is to separate water from diesel fuel. The presence of water can cause issues such as rust, wear, and seizure, and can even worsen the diesel combustion process. This is especially problematic in countries like China, where diesel has a higher sulfur content, leading to a higher risk of corrosive reactions when water is present, damaging engine components.
Diesel Coarse Filters:
As preliminary filtration components, they are mainly responsible for filtering out larger impurities from diesel. These are typically installed inside the fuel tank.
Diesel Fine Filters:
Under the National IV Emission Standards (China's equivalent to Euro IV), diesel fine filters have become the primary filtration components, used to filter out impurities in the range of 3-5μm. Both water separators and fine filters are usually installed outside the fuel tank for easier maintenance.
As a common consumable for trucks, the regular maintenance of diesel filters is crucial. Timely maintenance of filters can ensure the safe and efficient operation of truck diesel filters, extend engine life, and reduce transportation costs. Therefore, choosing a professional diesel filter supplier that provides high-quality filters and professional maintenance services is a wise decision to ensure your driving safety and enhance economic efficiency.
HEKUANG Intelligent Technology Co., Ltd. Contact Number: 400-6969-733 Address: No. 68 Xinmei Road, Xinwu District, Wuxi, Jiangsu Province, China