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Table 1 Number of data points and time ratio of each working condition

From: Reproduction method of time-domain load of construction machinery internal combustion engine

Working condition

Average mean of speed rpm

Number of data

Time proportion

Shutdown stage

0–900

379

1.04%

Idle stage

900–1400

3625

9.99%

Operating stage

1400–1500

8001

22.05%

1500–1600

5847

16.11%

1600–1700

18,439

50.81%

Total

 

36,291

100.00%