What is the difference between an engine’s "rated power" and "maximum power"?

Rated power refers to the effective power that an engine can output continuously and stably at its rated speed, and it is a core indicator for measuring the engine’s power output capability. Maximum power, by contrast, is the instantaneous maximum power that the engine can achieve under specific conditions. Power directly affects the equipment’s operating speed, traction capacity, and working range. The corresponding speed is usually specified alongside power, as power is a function of rotational speed and torque.

How much impact does the "fuel consumption rate" have on equipment operating costs?

Fuel consumption rate refers to the fuel consumption of an engine per unit power per unit time, and it is a key indicator for measuring engine economy. A lower fuel consumption rate means lower fuel costs for the equipment. For example, an excavator with a low fuel consumption rate consumes less fuel than one with a high fuel consumption rate under the same operating time and workload. In the long run, this can significantly reduce the equipment’s operating costs.