JPH0265678U - - Google Patents
Info
- Publication number
- JPH0265678U JPH0265678U JP14569888U JP14569888U JPH0265678U JP H0265678 U JPH0265678 U JP H0265678U JP 14569888 U JP14569888 U JP 14569888U JP 14569888 U JP14569888 U JP 14569888U JP H0265678 U JPH0265678 U JP H0265678U
- Authority
- JP
- Japan
- Prior art keywords
- opening degree
- oil passage
- passage opening
- rear wheel
- wheel steering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001133 acceleration Effects 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 2
Description
第１―１図、第１―２図、第１―３図は本考案
の車両用四輪操舵装置を示すクレーム対応図、第
２図は第１実施例の車両用四輪操舵装置を示す全
体図、第３図は第１実施例装置の後輪転舵コント
ローラでの制御作動の流れを示すフローチヤート
、第４図は後輪転舵量のタイムチヤート、第５図
は加速円旋回時における車両のステア特性図、第
６図は第２実施例装置の後輪転舵コントローラで
の制御作動の流れを示すフローチヤート、第７図
は第３実施例の車両用四輪操舵装置を示す全体図
、第８図は第３実施例装置の後輪転舵コントロー
ラでの制御作動の流れを示すフローチヤートであ
る。
ａ……油圧パワーステアリング、ｂ……前輪、
ｃ……前輪操舵装置、ｄ……センタリングスプリ
ング、ｅ……後輪用アクチユエータ、ｆ……後輪
、ｇ……後輪操舵装置、ｈ……パワーステアリン
グ油圧供給路、ｉ……油路開度変更手段、ｊ……
横加速度検出部、ｋ……車速検出部、ｌ１，ｌ２
，ｌ３……油路開度制御部、ｍ１，ｍ２，ｍ３…
…後輪転舵制御手段、ｎ……横加速度微分値検出
部、ｏ……ヨー角加速度検出部。
Fig. 1-1, Fig. 1-2, and Fig. 1-3 are complaint correspondence diagrams showing the four-wheel steering system for a vehicle of the present invention, and Fig. 2 shows the four-wheel steering system for a vehicle according to the first embodiment. 3 is a flowchart showing the flow of control operations in the rear wheel steering controller of the first embodiment, FIG. 4 is a time chart of the amount of rear wheel steering, and FIG. 5 is a vehicle during an acceleration circular turn. FIG. 6 is a flowchart showing the flow of control operations in the rear wheel steering controller of the device of the second embodiment, FIG. 7 is an overall diagram showing the four-wheel steering device for a vehicle of the third embodiment, FIG. 8 is a flowchart showing the flow of control operations in the rear wheel steering controller of the third embodiment. a...Hydraulic power steering, b...Front wheels,
c...Front wheel steering device, d...Centering spring, e...Rear wheel actuator, f...Rear wheel, g...Rear wheel steering device, h...Power steering hydraulic pressure supply path, i...Oil path open degree changing means, j...
Lateral acceleration detection section, k...Vehicle speed detection section, l 1 , l 2
, l 3 ... oil passage opening degree control section, m 1 , m 2 , m 3 ...
... Rear wheel steering control means, n ... Lateral acceleration differential value detection section, o ... Yaw angular acceleration detection section.
Claims (1)
ステアリングを介して前輪を転舵する前輪操舵装
置と、 センタリングスプリングを有する後輪用アクチ
ユエータに前輪パワーステアリング油圧を導き、
後輪を前輪に対し逆相に転舵する後輪操舵装置と
を備えた車両用四輪操舵装置において、 前記後輪用アクチユエータへのパワーステアリ
ング油圧供給路に油路開度変更手段を設け、 前記油路開度変更手段に、横加速度を検出する
横加速度検出部と、車速を検出する車速検出部と
、横加速度が所定値より大きい状態が所定時間以
上継続し、且つ、車速が所定値より大きい時、前
記油圧供給路の油路開度を絞る油路開度制御部と
を有する後輪転舵制御手段を設けた事を特徴とす
る車両用四輪操舵装置。 (2) ハンドル操舵力をアシストする油圧パワー
ステアリングを介して前輪を転舵する前輪操舵装
置と、 センタリングスプリングを有する後輪用アクチ
ユエータに前輪パワーステアリング油圧を導き、
後輪を前輪に対し逆相に転舵する後輪操舵装置と
を備えた車両用四輪操舵装置において、 前記後輪用アクチユエータへのパワーステアリ
ング油圧供給路に油路開度変更手段を設け、 前記油路開度変更手段に、横加速度の時間変化
率を検出する横加速度微分値検出部と、車速を検
出する車速検出部と、横加速度微分値が所定値よ
り大きく、且つ、車速が所定値より大きい時、前
記油圧供給路の油路開度を絞る油路開度制御部と
を有する後輪転舵制御手段を設けた事を特徴とす
る車両用四輪操舵装置。 (3) ハンドル操舵力をアシストする油圧パワー
ステアリングを介して前輪を転舵する前輪操舵装
置と、 センタリングスプリングを有する後輪用アクチ
ユエータに前輪パワーステアリング油圧を導き、
後輪を前輪に対し逆相に転舵する後輪操舵装置と
を備えた車両用四輪操舵装置において、 前記後輪用アクチユエータへのパワーステアリ
ング油圧供給路に油路開度変更手段を設け、 前記油路開度変更手段に、ヨー角加速度を検出
するヨー角加速度検出部と、車速を検出する車速
検出検出部と、ヨー角加速度が所定値より大きく
、且つ、車速が所定値より大きい時、前記油圧供
給路の油路開度を絞る油路開度制御部とを有する
後輪転舵制御手段を設けた事を特徴とする車両用
四輪操舵装置。[Scope of Claim for Utility Model Registration] (1) A front wheel steering device that steers the front wheels via hydraulic power steering that assists steering force, and a front wheel power steering hydraulic pressure that guides the front wheel power steering hydraulic pressure to a rear wheel actuator that has a centering spring.
A four-wheel steering system for a vehicle comprising a rear wheel steering system that steers the rear wheels in a phase opposite to the front wheels, wherein an oil passage opening degree changing means is provided in the power steering hydraulic pressure supply path to the rear wheel actuator, The oil passage opening degree changing means includes a lateral acceleration detection section that detects lateral acceleration, a vehicle speed detection section that detects vehicle speed, and a state in which the lateral acceleration is greater than a predetermined value continues for a predetermined time or more, and the vehicle speed is the predetermined value. A four-wheel steering system for a vehicle, comprising: a rear wheel steering control means having an oil passage opening degree control section that throttles the oil passage opening degree of the oil pressure supply passage when the oil pressure supply passage is larger than the oil passage opening degree. (2) A front wheel steering device that steers the front wheels via hydraulic power steering that assists with the steering force, and a front wheel power steering hydraulic pressure that is guided to a rear wheel actuator that has a centering spring.
A four-wheel steering system for a vehicle comprising a rear wheel steering system that steers the rear wheels in a phase opposite to the front wheels, wherein an oil passage opening degree changing means is provided in the power steering hydraulic pressure supply path to the rear wheel actuator, The oil passage opening degree changing means includes a lateral acceleration differential value detection section that detects a time change rate of lateral acceleration, a vehicle speed detection section that detects vehicle speed, and a lateral acceleration differential value that is larger than a predetermined value and a vehicle speed that is a predetermined value. A four-wheel steering system for a vehicle, comprising: a rear wheel steering control means having an oil passage opening degree control section that throttles the oil passage opening degree of the hydraulic pressure supply passage when the oil passage opening degree is larger than the value. (3) A front wheel steering device that steers the front wheels via hydraulic power steering that assists with steering force, and a front wheel power steering hydraulic pressure that is guided to a rear wheel actuator that has a centering spring.
A four-wheel steering system for a vehicle comprising a rear wheel steering system that steers the rear wheels in a phase opposite to the front wheels, wherein an oil passage opening degree changing means is provided in the power steering hydraulic pressure supply path to the rear wheel actuator, The oil passage opening degree changing means includes a yaw angular acceleration detection section that detects yaw angular acceleration, a vehicle speed detection section that detects vehicle speed, and when the yaw angular acceleration is larger than a predetermined value and the vehicle speed is larger than the predetermined value. A four-wheel steering system for a vehicle, comprising: a rear wheel steering control means having an oil passage opening degree control section that throttles the opening degree of the oil passage of the hydraulic pressure supply passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14569888U JPH0265678U (en) | 1988-11-08 | 1988-11-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14569888U JPH0265678U (en) | 1988-11-08 | 1988-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0265678U true JPH0265678U (en) | 1990-05-17 |
Family
ID=31414519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14569888U Pending JPH0265678U (en) | 1988-11-08 | 1988-11-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0265678U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60161256A (en) * | 1984-01-31 | 1985-08-22 | Nissan Motor Co Ltd | Auxiliary steering for car |
| JPS61226367A (en) * | 1985-04-01 | 1986-10-08 | Nissan Motor Co Ltd | Steering angle control device for vehicle |
| JPS638076A (en) * | 1986-06-27 | 1988-01-13 | Kayaba Ind Co Ltd | Rear wheel steering device |
-
1988
- 1988-11-08 JP JP14569888U patent/JPH0265678U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60161256A (en) * | 1984-01-31 | 1985-08-22 | Nissan Motor Co Ltd | Auxiliary steering for car |
| JPS61226367A (en) * | 1985-04-01 | 1986-10-08 | Nissan Motor Co Ltd | Steering angle control device for vehicle |
| JPS638076A (en) * | 1986-06-27 | 1988-01-13 | Kayaba Ind Co Ltd | Rear wheel steering device |
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