1. Try to reduce the resistance and acceleration resistance of the vehicle during driving. If the resistance is large, it will consume more fuel
If the vehicle speed is below 400km / h during construction, the air flow resistance can be ignored by the enterprise. It should be noted that the rolling development resistance. When the vehicle runs on an uneven road surface, because it can often jump, the deformation of different suspension control devices and tires will increase, resulting in a large increase in rolling resistance. Compared with the analysis of driving on a good road surface, the fuel consumption cost will increase by 30% - 50%. Therefore, the construction road must be repaired and maintained. At the same time, the rolling resistance is also greatly affected by the tire pressure. If the tire pressure can be reduced on a hard road surface, the tire deformation will be large and the rolling resistance will increase continuously; If the production tire pressure is reduced on the soft road surface, the contact building area between the tire and the ground will gradually increase, and the maximum pressure level per unit working area will decrease, which will reduce the rolling resistance. Therefore, it is necessary to pay attention to the changes of road conditions during construction, and select the appropriate tire pressure to reduce fuel consumption. The transmission system ratio of each gear of the automatic transmission of the vehicle has a great impact on the fuel consumption. During the construction, the high-speed gear with small transmission ratio shall be designed and selected as much as possible to save the traditional fuel.
2. Improve engine compression ratio and standard value
The compression ratio of a diesel engine is usually between 16 and 22. The compression ratio is increased, and the temperature and pressure at the compression end point are increased to promote the mixing of combustion gas expansion; Therefore, the thermal efficiency of the engine is improved, the effective power is increased, and the fuel consumption is reduced. The specific measures are to reduce the resistance of the intake system. The filter shall be cleaned and maintained in time to ensure that enough air enters the timely cylinder. Keep the vehicle in good condition. The cylinder pressure of the engine is generally not less than 20% and not less than 30% of the standard pressure of the original engine. The pressure difference between cylinders is generally not more than 8% for diesel engines and not more than 10% for gasoline engines. If the cylinder pressure reaches the set standard, the valve should be ground and the piston ring should be replaced if necessary. It should also be pointed out that the coke combustion chamber will have a tendency to automatically increase the compression ratio. If the compression ratio is too high, the coke will easily knock the cylinder, resulting in increased fuel consumption. Therefore, it is necessary to remove the coke; In addition, when the intake air gap is too large and the exhaust valve gap must be adjusted to a predetermined value, too small will cause an increase in fuel consumption.
3. Correct the fuel supply time advance angle of the engine
If the fuel supply advance angle is too large or too small, the fuel consumption of the engine will increase. Therefore, in order to make the engine have good performance, the fuel supply advance angle must be calibrated.
4. Reduce fuel consumption per unit load
Under the condition that the vehicle development situation allows, increasing the load capacity of the vehicle to the rated load can not only improve the productivity of the enterprise, but also significantly reduce the fuel consumption per unit weight.
