Diesel generating set is driven by diesel engine running, when diesel generating set equipment using the external and internal coil with electric loop formation, produce current which will generate electromagnetic force resistance torque, but by the principle of conservation of energy, consume much power drag torque will be how much extra do the work, the dry speed stability of diesel generator set, Electromagnetic negative force to do more work means that the negative torque is large, colloquially, that is, the greater the power of the use of electrical equipment, the more difficult it is to turn the diesel engine.

When there is no use of electrical equipment, diesel generator set inside the coil, no current coil to generate electromagnetic torque, but diesel generating sets of bearings, belts, there will be Yin, torque and power consumption of diesel engine, the other is a four-stroke diesel engine itself, only one power stroke, maintain its rapid operation also to have fuel consumption, The efficiency of diesel engine as a heat engine of internal combustion engine is also limited.

When the diesel generator power is large and the electrical power is small, these losses may be greater than the power of the electrical equipment. Diesel engine power is difficult to do small, so the minimum power of diesel generator set is a few kilowatts, for millions of power construction and, this load can be ignored, the above analysis confirms what you say that the consumption of electrical oil does not exist, but it will not consume more oil, That is to say, diesel generator sets in the operation of the load hours a few flat no excess power will be wasted.