| 摘要 |
A speed adjusting system for vehicles, comprising an accelerator (1), such as a throttle pedal, a speed adjusting means (2), such as a throttle or a fuel injection pump, which is adjustable by operating the accelerator (1), and a control unit (3) which is connected to the accelerator (1) and which is settable between a first operating position, in which the accelerator (1) is operable without difficulty, and a second operating position, in which the accelerator (1) is operable with difficulty. The second operating position constitutes a basic state of the control unit (3), the difficulty, with which the accelerator (1) is operable when the control unit (3) is arranged in said basic state, appearing as a resistance which is generated by the control unit (3) and acts on the accelerator (1) and which must be overcome for operating the accelerator (1) and which clearly exceeds the resistance that exists for operating a conventional accelerator. The control unit comprises a drive means (13; 113), the drive means (13; 113), on activation, being adapted to counteract said resistance, which control unit (3) will thus be arranged in its first operating position by activating the drive means (13; 113). The invention also relates to a control unit (3) which can be arranged in such a system, and a method for adjusting the speed of a vehicle.
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