JPH027168U

JPH027168U -

Info

Publication number: JPH027168U
Application number: JP8673188U
Authority: JP
Priority date: 1988-06-30
Filing date: 1988-06-30
Publication date: 1990-01-17

Description

[Brief explanation of drawings]

第１図は本考案の全体構成図、第２図は本考案
の一実施例を示すアンチスキツド制御装置の概略
構成図、第３図は同上装置中のＳＬＶ及びその配
管系の拡大構成図、第４図は第２図中のコントロ
ーラ内に記憶されているプログラムのフローチヤ
ート、第５図は本考案の他の実施例を示すアンチ
スキツド制御装置のＳＬＶ及びその配管系の拡大
構成図である。４，５……ホイールシリンダ、６，７……ブレ
ーキ配管、８ａ，８ｂ……モジユレータ、１４…
…ブレーキペダル、１５……ブレーキスイツチ、
１７……コントローラ、１８ａ，１８ｂ……駆動
回路、３０，３０ａ，３０ｂ，３０ｃ，３０ｄ…
…車輪速度センサ、６２……車輪速差算出手段、
６３……車輪速差比較手段、６４……絞り弁制御
手段、６８ａ，６８ｂ……絞り弁、７１ａ，７１
ｂ……バイパス通路、１００……アンチスキツド
制御手段、２００……セレクトローバルブ、ＬＦ
Ｗ，ＲＦＷ……前輪、ＬＲＷ，ＲＲＷ……後輪、
Ｐ，Ｑ……所定値。 FIG. 1 is a general configuration diagram of the present invention, FIG. 2 is a schematic configuration diagram of an anti-skid control device showing an embodiment of the present invention, FIG. 3 is an enlarged configuration diagram of the SLV in the same device and its piping system, and FIG. FIG. 4 is a flowchart of a program stored in the controller in FIG. 2, and FIG. 5 is an enlarged block diagram of an SLV and its piping system of an anti-skid control device showing another embodiment of the present invention. 4, 5...Wheel cylinder, 6,7...Brake piping, 8a, 8b...Modulator, 14...
...brake pedal, 15...brake switch,
17... Controller, 18a, 18b... Drive circuit, 30, 30a, 30b, 30c, 30d...
...Wheel speed sensor, 62...Wheel speed difference calculation means,
63... Wheel speed difference comparison means, 64... Throttle valve control means, 68a, 68b... Throttle valve, 71a, 71
b...Bypass passage, 100...Anti skid control means, 200...Select low valve, LF
W, RFW...Front wheel, LRW, RRW...Rear wheel,
P, Q...predetermined values.

Claims

[Scope of utility model registration request]

A wheel speed sensor that detects the speed of each wheel of the vehicle and sends a speed signal corresponding to the wheel speed, a brake switch that detects whether the brake pedal is on or off, and two sets of brake piping that connect each wheel cylinder of the diagonal wheels. , a modulator that controls the brake fluid pressure of each brake pipe, a drive circuit that sends out a drive signal to operate each modulator, and a wheel side that is disposed in the middle of both brake pipes and tends to lock. The selector lowers the rear wheel brake fluid pressure so that it is equal to the fluid pressure in the brake piping on the side of the wheel that does not tend to lock or the brake piping on the side with higher fluid pressure so that it is equal to the fluid pressure in the brake piping on the side with lower fluid pressure. It detects whether or not the wheels tend to lock based on the valve and the speed signal, and if any wheel has a tendency to lock, a brake is applied to the drive circuit that drives the modulator of the wheel that has a tendency to lock. In the anti-skid control device, the anti-skid control means is equipped with an anti-skid control means for releasing an anti-skid signal and transmitting an anti-skid signal to release the brake hydraulic pressure in steps with a hold time in between. Each bypass passage connecting the brake pipes, each throttle valve provided in each bypass passage, a wheel speed difference calculation means for calculating a difference in the speed signal during a certain period of time during braking, and the wheel speed difference calculation means. wheel speed difference comparison means for comparing the output of the output with a predetermined value and determining the road surface condition based on the magnitude relationship; and wheel speed difference comparison means for determining the road surface condition from the magnitude relationship; Alternatively, an anti-skid control device comprising a throttle valve control means for controlling a throttle valve so as to adjust the flow rate of a bypass passage provided on the side of the brake pipe where the hydraulic pressure is low.