| 摘要 |
PROBLEM TO BE SOLVED: To provide an engine rotation control device of an installation working vehicle having a construction highly reliable with less error caused by secular change and the like and easy of maintenance. SOLUTION: It comprises: an acceleration level selection device 60 capable of selecting an acceleration level (engine speed) of an engine E by external operation, an accelerator signal output device 70 outputting an accelerator signal (S1, S2) of a digital signal corresponding to the acceleration level selected by the acceleration level selection device 60, a digital-analog signal conversion device 80 converting the accelerator signal (S1, S2) output from the accelerator signal output device 70 into an analog signal (analog output voltage) and outputting it, and a buffer amplifier BA and an electronic control unit ECU performing engine rotating seed control by using the analog signal (analog output voltage) outputted from the digital-analog signal conversion device 80. COPYRIGHT: (C)2005,JPO&NCIPI
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