| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wheel system working vehicle of a hybrid drive type, for independently controlling an engine and thereby to reduce fuel economy, while operability as a wheel system working vehicle is maintained. <P>SOLUTION: The wheel system working vehicle of a hybrid drive type, comprises: an engine 1; a hydraulic pump 2; hydraulic working devices 3, 4 driven by discharge oil from the hydraulic pump 2 to perform works; a traveling device 10; a battery 13; a generator 11 driven by the engine and supplying and receiving electric power to/from the battery; an electric motor 8 driven by the electric power of the battery and a generator to drive the traveling device 10; an electric motor 7 driving the hydraulic pumps 3, 4; first control means 20a to 20h controlling the drive of the electric motors 7, 8 according to the operation of an accelerator pedal 21; and second control means 20j to 20i controlling the electric motor and the engine independently from the operation of the accelerator pedal 21 depending on remaining amounts of the battery. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
