| 摘要 |
PURPOSE:To make a constant car speed maintainable, by installing a device, calculating a target engine speed to a position of a throttle lever or a fuel control rack, and controlling the discharge capacity of a hydraulic pump so as to provided this target engine speed. CONSTITUTION:A quantity moving a throttle lever or a fuel control rack is calculated from both target and actual car speeds and controlled to the desired position. Simultaneously, a target rotational frequency of an engine 1 to this position is calculated, and the discharge capacity of a pump 5 is controlled so as to cause the rotational frequency of the engine 1 to become the target rotational frequency. With this constitution, an input-output speed ratio of a non-stage transmission 2 is controlled. Therefore, at the time of driving on an uneven ground, even if running resistance is varied, a constant car speed is always maintainable at the throttle state set by a pedal or the lever. |
