JPS648407U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a block diagram illustrating the basic configuration of the present invention, FIG. 2 is a schematic configuration diagram of an electronically controlled suspension device as an embodiment of the present invention, and FIG. 3 is a pneumatic circuit diagram of this embodiment. Fig. 4 is a block diagram showing the configuration of the electrical system of this embodiment, Figs. 5 to 8 are flowcharts showing an example of a control routine performed in the control circuit of this embodiment, and Fig. 9 is a longitudinal acceleration , a graph showing the relationship between control signals, vehicle height, and time; FIG. 10 is a graph showing the relationship between the acceleration difference and the estimated longitudinal acceleration; and FIG. 11 shows the relationship between the estimated longitudinal acceleration and the vehicle height correction amount. Figure 12 is an explanatory diagram of the attitude relative to the standard vehicle height, Figure 13 is a graph showing the relationship between longitudinal acceleration and the amount of change from the standard vehicle height, and Figure 14 is the discharge change pressure and vehicle height correction amount. 15 is a graph showing the relationship between suction change pressure and vehicle height correction amount. FIG. 16 is a graph showing the relationship between pressure reduction time and high pressure reserve tank pressure/main gas indoor pressure. 17th
The figure is a graph showing the relationship between pressure increase time and main gas indoor pressure/low pressure reserve tank pressure, Figure 18 is a graph showing the relationship between drive duty ratio and correction amount, and Figure 19 is an air circuit as another embodiment. It is a diagram. 2FL, 2FR, 2RL, 2RR... Gas spring, 28, 28a, 32, 32a... High pressure reserve tank, 34, 36, 50, 52, 54, 56,
70, 72...pressure sensor, 62, 62a, 68
, 68a...Low pressure reserve tank, 100...Electronic control circuit.

Claims (1)

[Scope of Claim for Utility Model Registration] A gas spring of a suspension provided corresponding to a wheel of a vehicle and a reserve tank are communicated with each other by means of a gas supply/discharge means to supply and discharge gas in the gas spring, In an electronically controlled suspension device that controls the attitude of the vehicle, a communication time calculation means that calculates each communication time between the gas spring and the reserve tank when controlling the attitude of the vehicle; An electronically controlled suspension device comprising: supply/discharge control means for controlling the gas supply/discharge means based on communication time to simultaneously supply/discharge gas in the two or more gas springs.