JPH0290107U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a diagram showing a vehicle suspension device according to an embodiment of the present invention, Fig. 2 is a diagram showing a three-way valve being driven and not driven, and Fig. 3 is a diagram showing a solenoid valve being driven and not driven. Figure 4 is a diagram showing the drive and non-drive states of the flow rate switching valve. Figure 5 is a vehicle speed in soft mode - steering wheel angular velocity map. Figure 6 is a diagram showing vehicle speed in auto mode.
Steering wheel angular velocity map, Fig. 7 is a vehicle speed-steering wheel angular velocity map in sports mode, Fig. 8 is a G sensor map, Fig. 9 is a diagram showing the relationship between control level and air intake/exhaust time based on a vehicle speed-steering wheel angular velocity map, and Fig. 10 is a A diagram showing the relationship between the control level by the G sensor map and the supply/exhaust time, Figures 11 and 12 are flowcharts showing the operation of an embodiment of the present invention, and Figure 13 shows the return of normal roll control and roll reverse control. FIG. 4 is a timing chart showing the control contents when the roll control is restored by performing the following steps. 15a...High pressure reserve tank, 15b...Low pressure reserve tank, 19...Flow rate switching valve, 22,2
3, 26, 27... Solenoid valve, 36... Controller, 45... Pressure sensor.

Claims (1)

[Scope of claim for utility model registration] A fluid spring chamber provided for each wheel and interposed between each wheel and the vehicle body, a high-pressure reserve tank that stores high-pressure fluid for supply, and a low-pressure reservoir that stores low-pressure fluid for discharge. a reserve tank; a fluid supply means for supplying fluid from the high pressure reserve tank to each of the fluid spring chambers via respective supply valve means; and a fluid supply means for supplying fluid from the high pressure reserve tank to each of the above fluid spring chambers via respective discharge valve means; A fluid discharging means for discharging fluid into a low-pressure reserve tank, a roll amount detection means for detecting the amount of roll of the vehicle body, and a control target that is set in accordance with the magnitude of the amount of roll detected by the roll amount detection means to reduce the amount of roll generated on the vehicle body. Roll control means for performing roll control by opening the supply valve means corresponding to the fluid spring chamber on the contraction side and the discharge valve means corresponding to the fluid spring chamber on the expansion side in accordance with the control target; Pressure detection means for detecting the pressure of the low pressure reserve tank, and when it is determined that the roll amount in the opposite direction to the roll direction detected by the roll amount detection means is equal to or higher than a predetermined value, A suspension device for a vehicle, comprising: roll reverse control means for performing roll reverse control when the pressure in the low pressure reserve tank is detected to be lower than a set pressure by the pressure detection means.