| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide hybrid construction machinery which can carry out operation by oil pressure with large output by temporarily increasing the output of an oil pressure pump. <P>SOLUTION: The hybrid construction machinery includes an engine 11 for driving a variable displacement oil pressure pump 14, a plurality of hydraulic actuators 1A, 1B, 7, 8, 9, 2A driven by oil pressure from the variable displacement oil pressure pump 14, and a motor generator 12 driven by electric power from a capacitor 19 to assist the engine. The maximum output of the variable displacement oil pressure pump 14 is equal to or more than that of the engine 11. When the variable displacement oil pressure pump 14 is operated by setting its output larger than the maximum output of the engine 11, the motor generator 12 assists the engine 11. <P>COPYRIGHT: (C)2010,JPO&INPIT |
