| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a working machine equipped with an inexpensive continuously variable speed change mechanism with superior controllability. <P>SOLUTION: A rice transplanter 1 is equipped with an engine 2, an electric motor 22, a differential 23, rear wheels 21, and a control part. The differential 23 outputs the differential power of an output of the engine 2 and an output of the electric motor 22 to the rear wheels 21. The control part controls a rotation speed of the electric motor 22. The output of the engine 2 is substantially constant. At the advance of a vehicle body, the control part carries out the speed change of an output to the rear wheels 21 by rotatively driving the electric motor 22 only in a direction neutralizing a drive force of the engine 2. <P>COPYRIGHT: (C)2010,JPO&INPIT |
