| 摘要 |
A speed management device for limiting a motor vehicle to a predetermined speed comprising an apparatus for interfacing a throttle with a control therefor. The apparatus comprises a linkage including a solenoid (143) for selectively connecting and disconnecting the throttle from the control, and a sensing means in the form of a microswitch (151) to sense a relative position at which the solenoid (143) may operate to latch the linkage. The apparatus includes a circuit (173) for operating the solenoid (143), and controlling a servo (127) which controls the throttle to maintain the predetermined speed while the linkage disconnects the throttle from the control. Instantaneous speed information is derived by the circuit (173) from a speed sensor (175), and the predetermined speed is selected on a selector arrangement (177). An option switch (179) is provided to enable or disable the function of the device, and to select other functions that the device may optionally possess. The device functions by operating the solenoid (143) when the circuit (173) determines that the predetermined speed has been reached, and overrides control of the throttle from the driver until the driver desires to slow the vehicle, at which point the circuit (173) senses the relative position and deactuates the solenoid (143) to restore control of the vehicle speed to the driver. An "impact drive" bistable solenoid is also disclosed. |
