A diesel generator can offer various benefits but it also has some disadvantages. Some of these disadvantages are noise, cost, reliability, and durability. Before buying a diesel generator, you should understand their advantages and disadvantages. Whether you are looking to purchase a new or used diesel generator, there are a few factors to consider. Some of the most important considerations include durability, reliability, fuel efficiency, and noise-absorbing technology. By weighing these factors, you will be able to determine which diesel generator best fits your needs. The following article will give you some information regarding these generators. It will help you decide which one suits your needs the best.


  • High fuel efficiency

The fuel efficiency of diesel generators can be measured by the energy produced to fuel consumption per hour of operation at a given load. A diesel generator can be used as a backup power system or as a continuous supply of power. These generators are also weather-resistant and produce less noise than conventional fuel generators. Diesel engines get better fuel economy simply because they don’t have to burn as much fuel as gasoline engines to get the same amount of power. Diesel engines are also heavier than petrol engines to withstand the added stress of a higher compression ratio.

The optimal operation of a diesel generator supports availability, maintainability and longevity. A hybrid power system architecture combines a diesel engine with a Li-ion battery to improve lower load performance and reduce fuel consumption. Variable speed technology, which allows a diesel engine to operate at the ideal speed depending on the electrical load, has been shown to lower fuel consumption by 40%.

  • Durability

Compared to gasoline generators, diesel generators are more durable and can run for up to 50 percent longer. Diesel engines require less maintenance than gasoline engines. Diesel engines do not require replacement of spark plugs, maintenance and carburetor replacement. A 1,800 RPM water-cooled diesel engine can run 12,000 to 30,000 hours without major repairs, and a gasoline generator can run roughly 6,000 to 10,000 hours before needing repairs.

  • Reliability

Diesel generators are reliable. Most diesel generators run at 1800RPM and are water-cooled, giving them a longer service life than air-cooled gas generators with standard 3600RPM. In general, if the machine is properly maintained, you can use it for up to 30,000 hours or more before needing repair. Whether you are looking to provide backup power to your business or just to power your home, diesel generators are the way to go. They are super fuel efficient and will save you money over the long run. Portable diesel generators are generally smaller and have wheels for easy transport. In addition to being a reliable power source, these machines are easy to maintain and fix. Unlike gas engines, the engine can be easily replaced without a lot of fuss.

Diesel engine adopts the method of compressed air to raise the air temperature, so that the air temperature exceeds the diesel spontaneous combustion ignition point, then injected diesel, diesel spray and air mixed at the same time ignition. Therefore, diesel engines do not need ignition systems. At the same time, the diesel engine fuel supply system is relatively simple. Therefore, the reliability of diesel engines is better than that of gasoline engines.


  • Noise pollution

Generators have noise pollution, but gasoline engines actually make more noise than diesel when they are running at full power.

  • High requirements on fuel quality

High-speed internal combustion engines generally use gasoline or light diesel fuel, and strict requirements on the cleanliness of the fuel. It is difficult to use solid fuel or inferior fuel inside the cylinder. In addition, the fuel injection device of diesel engine is extremely difficult to manufacture accurately, if the use of inferior fuel will seriously shorten the life of the injection device. Because the diesel engine compression ratio is very high, the need for high structural strength, so the weight, volume will be relatively large.

  • Not easy to start in winter

Because diesel is not volatile and compression ignition and other reasons, cold start in winter is not as fast as gasoline engine. Even if there is a preheating device, it can be started only after tens of seconds of preheating.

To sum up, despite their flaws, diesel generators can still provide steady and reliable power when they fail to deliver normal power or when there is a sudden outage. In some special departments or important occasions that do not allow sudden power failure, such as hospitals, banks, communication relay stations, etc., diesel generator sets can play a more effective role of backup power. At present, it is widely used in communication, mining, railway, hospital, finance, scientific research, road construction, industrial and agricultural production, urban construction and life in many fields of field power supply, emergency power supply and backup power supply.