Everything You Need To Know About Diesel Generators


A diesel generator generates electrical energy using a diesel engine. They are considered to be durable and reliable, which means that they would require less maintenance. On the other hand, diesel is cheaper compared to gasoline and propane, which makes this option the most economical. Due to its reliability, it is used for both homes and businesses. It allows for uninterruptible operations during a power outage or provides electricity when there is no access to a power grid. In minutes from starting, it can provide a full load of power. Diesel generators are widely used by construction sites, hypermarkets, hospitals, outdoor events and other businesses that need a constant source of energy.

How A Diesel Generator Works

A diesel generator converts fuel into electrical energy. This is done by blowing air into the generator until it becomes compressed. Diesel fuel is being injected, so the process of air compression together with fuel injection results with intense heat. Therefore, this starts the process of combustion which makes the central axis move. This action starts the generator and with the help of the alternator, the mechanical energy is being turned into electrical energy.

What Are They Used For?

A power outage is considered a threat to businesses. For data centers, this can lead to enormous unwanted costs. On the other hand, for hospitals, this can be life-threatening. Other facilities such as police departments, fire stations, airports, also require a constant flow of electrical energy. A diesel generator is an alternative source for electrical energy. It is a must-have for businesses and other facilities so that the critical operations will not suffer interruptions.

Fuel Consumption

One thing that is very important to you is the fuel consumption. The more power the generator produces, the more fuel it will consume. Also, there are other factors to be considered such as the size and the load that the generator is operating at.

To give you an idea of how much a generator will spend under different circumstances, these numbers will help:

  • 500 KW generator will consume 11.0 gal/hr, operating at ¼ load or 35,7 at full load.
  • 600 KW generator consumes 13.2 gal/hr, operating at ¼ load or 42.8 at full load.
  • 1000 KW generator consumes 21.6 gal/hr, operating at ¼ load or 71.1 at full load.
  • 2000 KW generator consumes 42.8 gal/hr, operating at ¼ load or 141.9 at full load.

Where To Buy From

Whether you are looking for a 400 KW generator or a 1500 KW generator, you should pay attention to the manufacturer’s reputation. For big purchases such as this one, it is always better to go for a trusted manufacturer to make sure that the equipment will not let you down. Some may resell poor quality generators, parallel with their self-produced ones. When you find diesel engines for sale, make sure that you check the origin.

Standy Generator Or Dedicated Generator?

Depending on your needs, you need to determine if you are looking for a standy diesel generator or a dedicated generator. What is the difference between these two? If the generator will be the only power source, then you need a dedicated diesel generator.

If you only need a backup source, then a standy generator will do the job. They are used to make sure that no power outage will interrupt the work.


When looking for a generator with a certain power capacity, make sure that you consult the salesman first. For example, when looking for a 250 KW generator make sure that the power is not expressed in KVA. These are not the same, because one unit of KVA equals 0.8 units KW.

Home Use

When looking for a generator to satisfy the needs of your home, you should have a few things in mind. Look for a high-quality generator muffler. Some may be pretty loud, so make sure that you buy a silent unit for your home.


These types of complex equipment have certain requirements. The most important one is the maintenance. In order to function properly and deliver quality power, a generator should be regularly maintained. Following the recommended maintenance practice by the manufacturer will allow proper operation. Some parts such as the engine, fuel system, exhaust system, and DC electrical system need to be monitored when the generator is working. If there are any leaks, they must be solved immediately. Also, the oil needs to be changed in intervals recommended by the manufacturer.

When taking a look at used generators for sale, make sure that they have had the proper maintenance.