潤滑系統是向機器或機組的摩擦點供送潤滑劑的系統，包括用以輸送、分配、調節、冷卻和凈化潤滑劑以及其壓力,流量和溫度等參數和故障的指求、報警和監控的整套裝置。在潤滑工作中，根據各種設備的實際工況，合理選擇和設計其潤滑方法、潤滑系統和裝置，對保證設備具有良好的潤滑狀況和工作性能以及保持較長的使用壽命，具有十分重要的意義。 一般而言，機械設備的潤滑系統應滿足以下要求：
The lubrication system is a system that supplies lubricant to the friction point of the machine or unit, including a complete set of devices for conveying, distributing, regulating, cooling and purifying lubricant, as well as the indication, alarm and monitoring of its pressure, flow, temperature and other parameters and faults. In the lubrication work, it is of great significance to reasonably select and design the lubrication method, lubrication system and device according to the actual working conditions of various equipment to ensure that the equipment has good lubrication condition and working performance and maintain a long service life. In general, the lubrication system of mechanical equipment shall meet the following requirements:
1) 保證均勻、邊續地對各潤滑點供應一定壓力的潤滑劑，油量充足，并可按需要調節。
1) Ensure that the lubricant of certain pressure is supplied to each lubricating point evenly and continuously, and the oil quantity is sufficient, and can be adjusted as required.
2)工作可靠性高。采用有效的密封和過濾裝置，保持潤滑劑的清潔，防止外界環境中灰塵、水分進入系統，并防止因泄漏而污染環境。
2) High working reliability. Effective sealing and filtering devices are used to keep the lubricant clean, prevent dust and moisture from entering the system in the external environment, and prevent environmental pollution due to leakage.
3)結構簡單，盡可能標準化，便于維修及高速調整，便于檢查及更換潤滑劑，起始投資及維修費用低。
3) The structure is simple, standardized as far as possible, convenient for maintenance and high-speed adjustment, convenient for inspection and replacement of lubricants, and low initial investment and maintenance costs.

4)帶有工作參數的指示、報警保護及工況監測裝置，能及時發現潤滑故障。
4) With the indication, alarm protection and working condition monitoring device of working parameters, it can timely find lubrication faults.
5)當潤滑系統需要保證合適的潤滑劑工作溫度時，可加裝冷卻及預熱裝置以及熱交換器。
5) When the lubrication system needs to ensure the proper operating temperature of lubricant, cooling and preheating devices and heat exchangers can be installed.
表明潤滑油的多方面作用
It shows the multiple functions of lubricating oil
有的則是潤滑與其他性能并重，如液壓油和液力傳動油，潤滑與傳遞動力同樣重要。其他大部分潤滑油主要是降低摩擦和減少磨損，同時還有如下作用：
Some pay equal attention to lubrication and other performance, such as hydraulic oil and hydraulic transmission oil, lubrication and power transmission are equally important. Most other lubricating oils mainly reduce friction and wear, and also have the following functions:
冷卻 密封、防銹防腐、絕緣、動能傳遞、減震、清晰。
Cooling and sealing, rust prevention and corrosion prevention, insulation, kinetic energy transmission, shock absorption and clarity.
之所以表明潤滑油的多方面作用，是因為近年來一些不實廣告中夸大了潤滑油的減摩作用，而忽略了其他作用，典型的是所謂"無油行車"宣傳者把他的油放在汽車中運轉一會后把油放光，在無油的情況下行駛數十，汽車運轉正常，表明他的油的剩余油膜功能強大。
The reason why lubricating oil has multiple functions is that in recent years, some false advertisements have exaggerated the antifriction effect of lubricating oil, while ignoring other functions. Typically, the so-called "oil-free driving" propagandist put his oil in the car for a while and then let the oil out. The car runs normally for tens of kilometers without oil, indicating that the remaining oil film function of his oil is strong.
但我們應看到在沒有潤滑油后，對設備的冷卻功能、沖洗功能及減振動功能都沒有了，尤其是連桿軸承的表面是易熔合金減摩涂層，溫度高到一定程度就熔化，某院校已在其發動機臺式實驗中，采用數種廣告中的"神奇油"進行驗證，結果表明無油運轉的時間長短并不決定于這種油的品種，而決定于發動機的連桿軸瓦的減磨合金的熔點高低。
However, we should see that after the absence of lubricating oil, the cooling function, flushing function and vibration reduction function of the equipment are gone, especially the surface of the connecting rod bearing is a fusible alloy antifriction coating, which melts when the temperature is high to a certain degree. A certain university has used several kinds of "magic oil" in the advertisement to verify in its engine desktop experiment, and the result shows that the length of oil-free operation does not depend on the type of this oil, It depends on the melting point of the anti-wear alloy of the connecting rod bearing bush of the engine.