GB/T 39416-2020 in English

This standard applies to diesel-powered truck cranes and all-terrain cranes, and specifies the test conditions and calculation methods for fuel consumption.

Instrument accuracy

• Fuel flow meter: error ≤±0.5%
• Vehicle speed measurement: error ≤±0.5%
• Engine tachometer: error ≤±1%

Test conditions

1. Hydraulic oil temperature 20-80℃
2. Engine water temperature 80-90℃
3. Tire tread depth maintains initial 50%-90%

Test preparation phase

It is recommended to conduct Test preparation in advance class=instrument>50km running-in drive, and check the prototype status according to Appendix A, with special attention to:

• Confirm that all oils meet the manufacturer's standards
• Check the synchronization of leg extension and retraction
• Calibrate the accuracy level of the weighing instrument

Data collection stage

The operating handle should strictly follow the opening-time curve in Figure 1. Note:

1. Remove the maximum and minimum values and take the middle 3 groups of data
2. Equal speed driving speed deviation ≤1km/h
3. Record environmental temperature and humidity data

The total fuel consumption of the operating condition is calculated as Q=Qs×0.01+Qi×0.39+Qs×0.12+Qa×0.19+Qh×0.05+Qe×0.24, where:

• Arithmetic mean correction must be performed on each sub-condition first
• For driving condition weights, refer to Table 6 for classification
• The final result is rounded to two decimal places