| 摘要 |
PURPOSE:To ensure running safety where at least a part of suspension springs is composed of air springs by giving a warning whereby restoring height auto matically when a vehicle is changed over to a running condition while height is being controlled manually. CONSTITUTION:The rear front wheel 15 and the rear rear wheel 19 of a truck are suspended from a frame 13 by means of leaf springs 16 and 20 and air springs 17 and 21. And respective air springs 17 and 21 are communicated with each other, and are connected with an automatic suction valve 27 and an auto matic exhaust valve 28. And height is controlled by a step of controlling respec tive valves 27 and 28 by a computer 40 based on the output from a manual actuation button 42 and the like. In this case, when it is detected that a vehicle is switched over to a running condition while height is being controlled manu ally, a warning buzzer 59 is actuated. Simultaneously, when height is out of the range of a running condition, both of the suction and exhaust valves 27 and 28 are controlled by the computer 40 for restoring height controlled automat ically. |
