Energy-Saving Analysis of Hydraulic Hybrid Excavator Based on Common Pressure Rail

Table 1

Fuel consumption values of different system settings.

System type	Engine rated power (kW)	Fuel consumption (g)	Fuel saving ratio (compared with the LS system)
LS system	35	45	—
HEEC	35	35.6	21%
HEEC	25	20.5	32%