JPH0183673U

JPH0183673U -

Info

Publication number: JPH0183673U
Application number: JP1987180890U
Authority: JP
Priority date: 1987-11-27
Filing date: 1987-11-27
Publication date: 1989-06-02

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す概略構成図、
第２図は上記実施例が適用される車両の駆動系の
一例を示すレイアウト図、第３図は上記実施例に
於けるステアリングホイールの操舵角に対する後
輪転舵角と車速との関係を示す特性図、第４図は
上記実施例に於ける前輪切り戻し量とステアリン
グホイール操舵角との関係を示す特性図である。１…センタデフ、２…粘性クラツチ、１１…パ
ワーステアリング装置、１４…前輪転舵角補正用
モータ、１５…後輪操舵用パワーシリンダ、１７
…制御弁、１８…可変オリフイス、２０…操舵角
センサ、２１…車速センサ、２２…コントローラ
。 FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention;
Fig. 2 is a layout diagram showing an example of a drive system of a vehicle to which the above embodiment is applied, and Fig. 3 is a characteristic showing the relationship between rear wheel turning angle and vehicle speed with respect to the steering angle of the steering wheel in the above embodiment. 4 are characteristic diagrams showing the relationship between the front wheel turning back amount and the steering wheel steering angle in the above embodiment. DESCRIPTION OF SYMBOLS 1... Center differential, 2... Viscous clutch, 11... Power steering device, 14... Front wheel steering angle correction motor, 15... Power cylinder for rear wheel steering, 17
...Control valve, 18...Variable orifice, 20...Steering angle sensor, 21...Vehicle speed sensor, 22...Controller.

Claims

[Scope of utility model registration request]

In a four-wheel drive vehicle in which a front wheel drive system and a rear wheel drive system are connected to each other with a restraining force, a front wheel steering device that steers the front wheels in response to a steering operation of a steering wheel; a steering angle sensor that detects a steering angle of a wheel; a vehicle speed sensor that detects a vehicle speed; and a vehicle that receives detection outputs from the steering angle sensor and the vehicle speed sensor, and rotates the rear wheels in a direction opposite to the front wheels according to the steering of the steering wheel. a rear wheel steering means for steering the vehicle in a direction and reducing a rear wheel steering amount with respect to a steering angle of the steering wheel in accordance with an increase in vehicle speed; 4. A front wheel steering angle correcting means provided to steer back the front wheels steered by the device and reduce the amount of steered back with respect to the steering angle of the steering wheel in accordance with an increase in vehicle speed. wheel drive car.