| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hybrid type working machine which can achieve improvement of fuel consumption and exhaust gas properties and reduction of noise and can clear exhaust gas regulations by adopting a simple hybrid type in a small construction machine, such as a mini-shovel. <P>SOLUTION: The limit value HELe of engine output horsepower is set closer to PQ horsepower characteristic D of an oil pressure pump 21 to downsize an engine 11. When traveling at a high speed, a generator-motor 31 is operated as an electric motor by a battery 33 to assist output. When charging the battery 33, a control signal is output to a torque control solenoid valve 44 to perform torque reducing control, whereby a surplus torque of the engine 11 is forcibly generated to perform quick charging. <P>COPYRIGHT: (C)2011,JPO&INPIT |
