Diesel fuel consumption economy that rate, there is a change in the process. New diesel engine in the initial stage of the run-in commissioning, as a result of poor contact with the surface, friction losses greater power, fuel consumption rate is high. After adjustment adjustments, the diesel engine to good technical conditions, fuel consumption rate has stabilized at a lower range. Since then, as the diesel engine wear and the technical condition deteriorate, the rate of fuel consumption and gradually increase. At the same time, oil consumption has also increased.

Apart from the decline in horsepower, fuel consumption rate, with the diesel engine working hours increased, the agencies and with increasing gap between the parts and undermine relations with the right. Caused or exacerbated by the impact load, they often damage and failure, the reliability of the diesel engine decline.