JPS647007U - - Google Patents

Description

[Brief explanation of drawings]

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] Gas springs of a suspension provided corresponding to the wheels of a vehicle are communicated and disconnected by a gas supply/discharge means to supply/discharge gas in the gas springs, and the acceleration acting on the vehicle An electronically controlled suspension device that performs attitude control in a direction to counter changes in the attitude of a vehicle, comprising an acceleration detection means for detecting acceleration in a longitudinal direction of the vehicle, and an acceleration in the longitudinal direction detected by the acceleration detection means as the acceleration in the longitudinal direction. a return control means for controlling the gas supply/discharge means to control the attitude of the vehicle in a direction opposite to the attitude control when the attitude of the vehicle changes when the value becomes equal to or less than a comparison value corresponding to a maximum value of the vehicle; An electronically controlled suspension device characterized by: