JPS6245457U - - Google Patents
Info
- Publication number
- JPS6245457U JPS6245457U JP13694385U JP13694385U JPS6245457U JP S6245457 U JPS6245457 U JP S6245457U JP 13694385 U JP13694385 U JP 13694385U JP 13694385 U JP13694385 U JP 13694385U JP S6245457 U JPS6245457 U JP S6245457U
- Authority
- JP
- Japan
- Prior art keywords
- pressure chamber
- port
- lock
- release
- control valve
- 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
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
Landscapes
- Control Of Fluid Gearings (AREA)
Description
第１図は本考案のロツクアツプ制御弁を有する
無段変速機の油圧制御装置を示す図、第２図は無
段変速機の動力伝達機構を示す図、第３図は第１
図に示すロツクアツプ制御弁を拡大して示す図、
第４図は本考案のロツクアツプ制御弁の応答特性
を示す図、第５図は従来のロツクアツプ制御弁の
応答特性を示す図である。
１２……流体伝動装置（フルードカツプリング
）、１２ａ……リリース圧室、１２ｂ……アプラ
イ圧室、１２２……ロツクアツプ制御弁、２４０
ｅ……ポート（第２ポート）、２４０ｆ……ポー
ト（第１ポート）、２４０ｇ……ポート（第３ポ
ート）、２４２……スプール、２４４……小径部
、２４４ａ……等径部、２４４ｂ，２４４ｃ……
テーパ状部。
1 is a diagram showing a hydraulic control system for a continuously variable transmission having a lock-up control valve according to the present invention, FIG. 2 is a diagram showing a power transmission mechanism of the continuously variable transmission, and FIG.
An enlarged view of the lock-up control valve shown in the figure.
FIG. 4 is a diagram showing the response characteristics of the lock-up control valve of the present invention, and FIG. 5 is a diagram showing the response characteristics of the conventional lock-up control valve. 12... Fluid transmission device (fluid coupling), 12a... Release pressure chamber, 12b... Apply pressure chamber, 122... Lock-up control valve, 240
e...port (second port), 240f...port (first port), 240g...port (third port), 242...spool, 244...small diameter part, 244a...equal diameter part, 244b, 244c...
Tapered part.
Claims (1)
ライ圧室とリリース圧室とを有しリリース圧室側
からアプライ圧室側へ油圧が供給されるときには
ロツクアツプクラツチが解放されて流体伝動状態
となると共にアプライ圧室側からリリース圧室側
へ油圧が供給されるときにはロツクアツプクラツ
チを介して回転力の伝達が行われるロツクアツプ
制御状態となる流体伝動装置のアプライ圧室及び
リリース圧室に対する油圧の供給を制御する変速
機油圧制御装置のロツクアツプ制御弁において、 ロツクアツプ制御弁は、リリース圧室と連通す
る第１ポート、第１ポートの一方側に配置され所
定の作動圧が供給される油路と連通する第２ポー
ト、及び第１ポートの他方側に配置されるドレー
ン用の第３ポートを有する弁穴と、この弁穴内に
軸方向に移動可能に設けられ第１ポートと第２又
は第３ポートとの連通を制御する通路を形成する
小径部を隣接ランド間に有するスプールとから成
り、スプールの小径部は両ランド縁部からそれぞ
れ次第に縮径されるテーパ状部を有していること
を特徴とする変速機油圧制御装置のロツクアツプ
制御弁。[Claim for Utility Model Registration] It has an apply pressure chamber and a release pressure chamber that are separated by a lock-up clutch, and when hydraulic pressure is supplied from the release pressure chamber side to the apply pressure chamber side, the lock-up clutch is released. The apply pressure chamber and release of the fluid transmission device are in a fluid transmission state, and when hydraulic pressure is supplied from the apply pressure chamber side to the release pressure chamber side, the rotational force is transmitted via the lockup clutch. In a lock-up control valve of a transmission hydraulic control device that controls the supply of hydraulic pressure to a pressure chamber, the lock-up control valve is arranged at a first port communicating with a release pressure chamber, and on one side of the first port, and is supplied with a predetermined operating pressure. a valve hole having a second port that communicates with an oil passage connected to the drain, and a third port for a drain disposed on the other side of the first port; The spool has a small diameter part between adjacent lands that forms a passage for controlling communication with the second or third port, and the small diameter part of the spool has a tapered part whose diameter is gradually reduced from the edges of both lands. A lock-up control valve for a transmission hydraulic control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13694385U JPS6245457U (en) | 1985-09-09 | 1985-09-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13694385U JPS6245457U (en) | 1985-09-09 | 1985-09-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6245457U true JPS6245457U (en) | 1987-03-19 |
Family
ID=31040531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13694385U Pending JPS6245457U (en) | 1985-09-09 | 1985-09-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6245457U (en) |
-
1985
- 1985-09-09 JP JP13694385U patent/JPS6245457U/ja active Pending
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