超过 10 分钟的长时间低怠速或空载会损坏发动机。因为燃烧室温度太低以致于燃油不能完全燃烧。这将引起在喷油器喷孔以及活塞环周围形成积炭并引起气门粘连。如果发动机冷却液温度低于 60°C ，未燃烧的燃油将会冲刷掉气缸壁上的润滑油，并使曲轴箱的润滑油稀释。燃油的稀释物会影响润滑油的品质，并缩短发动机寿命，尽量缩短怠速时间以防止这种情况发生。

Prolonged low idle or no-load for more than 10 minutes will damage the engine. Because the temperature of the combustion chamber is too low, the fuel cannot burn completely. This will cause carbon deposits around the injector orifice and piston ring and cause valve adhesion. If the engine coolant temperature is lower than 60 ° C, the unburned fuel will wash away the lubricating oil on the cylinder wall and dilute the lubricating oil in the crankcase. The dilution of fuel will affect the quality of lubricating oil and shorten the service life of the engine. Try to shorten the idle time to prevent this from happening.

柴油发电机组在小负荷下运行，随着运行时间的延续，会出现以下五大危害!

The diesel generator set operates under small load. With the continuation of operation time, the following five hazards will appear!

（一）活塞—汽缸套密封不好，机油上窜，进入燃烧室燃烧，排气冒蓝烟；

（1） The sealing of piston cylinder liner is not good, the oil runs up, enters the combustion chamber for combustion, and the exhaust emits blue smoke;

（二）对于增压式柴油机，由于低载、空载，增压压力低。容易导致增压器油封（非接触式）的密封效果下降，机油窜入增压室，随同进气进入汽缸；

（2） For supercharged diesel engine, the supercharging pressure is low due to low load and no-load. It is easy to cause the sealing effect of supercharger oil seal (non-contact type) to decline, and the oil rushes into the supercharging chamber and enters the cylinder with the intake air;

（三）上窜至汽缸的一部分机油参与燃烧，一部分机油不能完全燃烧，在气门、进气道、活塞顶、活塞环等处形成积炭，还有一部分则随排气排出。这样，汽缸套排气道内就会逐步积聚机油，也会形成积炭；

（3） Part of the engine oil flowing up to the cylinder is involved in combustion, part of the engine oil can not be completely burned, and carbon deposits are formed at the valves, inlet ports, piston crown, piston rings, etc., and some are discharged with the exhaust. In this way, engine oil will gradually accumulate in the exhaust passage of cylinder liner, and carbon will also be formed;

（四）增压器的增压室内机油积聚到一定程度，就会从增压器的结合面处渗漏出；

（4） When the oil in the supercharging chamber of the supercharger accumulates to a certain extent, it will leak from the joint surface of the supercharger;

（五）长期小负荷运行，将会更严重的导致运动部件磨损加剧，发动机燃烧环境恶化等导致大修期提前的后果。因此，国外柴油机制造厂商无论对自然吸气型还是增压机型的使用都强调应尽量减少低载/空载运行时间，并规定Z小负荷不能低于机组额定功率的25%—30%。

（5） Long term low load operation will lead to more serious consequences such as increased wear of moving parts and deterioration of engine combustion environment, leading to the advance of overhaul period. Therefore, foreign diesel engine manufacturers emphasize to minimize the low load / no-load operation time regardless of the use of naturally aspirated or supercharged models, and stipulate that the Z small load shall not be less than 25% - 30% of the rated power of the unit.

柴油发电机组长时间满载运行，不但可以提高本身性能，找出隐患，还可以避免重大的通信事故。

The long-time full load operation of diesel generator can not only improve its performance and find out hidden dangers, but also avoid major communication accidents.

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The wonderful content of this article is provided by the knowledge of gas generator set accessories. There are many wonderful contents on this website. You can click to enter more contents: https://www.huannengpower.cn We have special customer service to answer your questions