Patent ID: 9151019
Filing Date: 2015-10-06
Classification: B60K,E02F,Y02T

Abstract:
1. A hybrid-type construction machine comprising an engine; an electric power accumulator; first and second pumps; an electric motor which drives the first pump; and a plural actuators which are driven by the first and second pumps, wherein the first and second pumps are arranged such that the first pump controls at least one of the actuators independently from the second pump and the second pump controls at least another one of the actuators independently from the first pump, the first pump is electrically driven by the electric motor with electric power from the electric power accumulator, and the second pump is directly coupled to the engine, the first and second pumps are connected to a common control valve, and at least two of the actuators are coupled to each of the first and second pumps via the common control valve.