| 摘要 |
PROBLEM TO BE SOLVED: To improve traveling sensation in acceleration and deceleration, regardless of the load by selecting the gain curve set in conformation to the magnitude of accelerator operating quantity according to the magnitude of the load to calculate the gain corresponding to the accelerator operation quantity, and using it to the calculation of throttle opening command value. SOLUTION: In an acceleration and deceleration control device for controlling the engine speed by a controller 11 according to accelerator operation quantity Ac for controlling the rotation speed of a drive wheel rotating hydraulic motor, this device comprises a load judgment part 15 for inputting a load signal W in the controller 11. It also comprises a gain curve for selecting and memory part 44 to select the gain curve set in conformation to the magnitude of the accelerator operation quantity according to the magnitude of the load. On the basis of the selected gain curve, the gain Ga corresponding to the accelerator operation quantity Ac is calculated, and the following throttle opening command value is calculated on the basis of the deviation value of throttle opening and the gain Ga and outputted to control the engine speed.
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