Shovel and method of controlling shovel

摘要

A shovel includes an engine; a hydraulic pump driven by the engine; an attachment including a boom, the attachment being driven with hydraulic fluid discharged by the hydraulic pump; a motor generator configured to assist driving by the engine; an electric power accumulating part configured to accumulate electric power generated by the motor generator; a motion state detecting part configured to detect the motion state of the attachment; and an assist control part configured to control the execution of an assist by the motor generator using the electric power accumulated in the electric power accumulating part. The assist control part is configured to cause the motor generator to assist the engine during a boom raising motion after an excavation motion.

主权项

1. A shovel, comprising:
an engine; a hydraulic pump driven by the engine; an attachment including a boom, the attachment being driven with hydraulic fluid discharged by the hydraulic pump; a motor generator configured to assist driving by the engine; an electric power accumulating part configured to accumulate electric power generated by the motor generator; a motion state detecting part configured to detect a motion state of the attachment; and an assist control part configured to control execution of an assist by the motor generator using the electric power accumulated in the electric power accumulating part, wherein the motion state detecting part is configured to determine whether the motion state of the attachment is a boom raising motion after an excavation motion, and the assist control part is configured to cause the motor generator to assist the engine during the boom raising motion after the excavation motion when the motion state detecting part determines that the motion state of the attachment is the boom raising motion after the excavation motion.