| 摘要 |
A control system for controlling the ride height of a vehicle, the system including a controller that receives and processes multiple variable inputs to provide enhanced ride height control. The inputs include a brake system signal including an Automatic Braking System (ABS) signal and/or an Electronic Braking System (EBS) signal, a remote setpoint signal and/or a fluid dump signal. The system also provides for measuring the actual ride height, filtering the measured ride height, determining if the filter ride height signal exceeds a threshold level, and adjusting the ride height accordingly. |
| 主权项 |
1. An electronic suspension system for a vehicle comprising:
a sensor that senses a distance between a vehicle axle and a vehicle frame and generates a sensor signal indicating a vehicle ride height relative to a reference ride height; a valve having an inlet port coupled to a source of pressurized fluid, an operating port coupled to a fluid bag positioned between the vehicle axle and the vehicle frame, and an exhaust port coupled to atmosphere; a motor coupled to said valve for selectively actuating the valve between a fill position where the inlet port is fluidly coupled to the operating port, an exhaust position where the operating port is fluidly coupled to the exhaust port, and a neutral position where the respective ports are fluidly isolated from each other; a suspension controller coupled to said sensor and receiving the sensor signal, said suspension controller coupled to said motor; a master controller coupled to said suspension controller; a plurality of inputs provided to said master controller, said plurality of inputs comprising:
a brake system signal generated by a brake system and coupled to said master controller, said brake system signal selected from the group consisting of: an Automatic Braking System (ABS) signal, an Electronic Braking System (EBS) signal and combinations thereof;a fluid dump signal indicative of an action to dump fluid from the fluid bag;a remotely entered ride-height setpoint; said master controller transmitting a function/mode signal to said suspension controller based upon at least one of the plurality of inputs, which said suspension controller uses to determine a mode of operation; wherein when the fluid dump is received by the master controller, the function/mode signal sent to the suspension controller comprises a signal to cause said suspension controller to dump fluid from the air bag; wherein when said suspension controller receives the signal indicative of a fluid dump, said suspension controller causes said valve to fully open such that the exhaust port fluidly coupled to the fluid bag and fluid is exhausted from the fluid bag. |
