The main fuel for diesel generators is diesel. Light diesel is used in high-speed diesel engines. Heavy diesel oil is used for medium and low speed diesel engines, and heavy oil is used for large low speed diesel engines.

The main requirements of diesel generator sets for diesel:

1) Good ignitability, easy to start the diesel engine and soft work.

2) Good atomization, easy to form combustible gas mixture.

3) Good fluidity at low temperature, ensuring smooth oil supply to the fuel injection pump at low temperature without clogging and other accidents.

4) The combustion products have less carbon deposition.

5) Less corrosive.

6) Less mechanical impurities and moisture.