JPH0346061U - - Google Patents
Info
- Publication number
- JPH0346061U JPH0346061U JP10656089U JP10656089U JPH0346061U JP H0346061 U JPH0346061 U JP H0346061U JP 10656089 U JP10656089 U JP 10656089U JP 10656089 U JP10656089 U JP 10656089U JP H0346061 U JPH0346061 U JP H0346061U
- Authority
- JP
- Japan
- Prior art keywords
- gear
- predetermined high
- vehicle
- engagement element
- predetermined
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
Description
第１図は本考案を適用する変速機の１例の線図
、第２図はその油圧回路図、第３図はこの油圧回
路の制御に用いる電子制御回路のブロツク図、第
４図はスロツトル圧と減圧弁の出力圧の変化特性
を示す線図、第５図は変化特性を示す線図、第６
図は排油制御弁に作用させる制御圧の制御プログ
ラムを示すフローチヤートである。
Ｇ４……所定の高速段、Ｇ１……所定の低速段
、Ｃ４……高速段用の油圧係合要素、ＬＤ４……
排油路、２２５……排油制御弁、｛１９……電子
制御回路、２０……電磁比例弁｝（制御手段）。
Figure 1 is a line diagram of an example of a transmission to which the present invention is applied, Figure 2 is its hydraulic circuit diagram, Figure 3 is a block diagram of the electronic control circuit used to control this hydraulic circuit, and Figure 4 is a throttle diagram. Figure 5 is a diagram showing the change characteristics of pressure and the output pressure of the pressure reducing valve. Figure 6 is a diagram showing the change characteristics.
The figure is a flowchart showing a control program for controlling the control pressure applied to the drain oil control valve. G4...Predetermined high speed gear, G1...Predetermined low gear gear, C4...Hydraulic engagement element for high gear gear, LD4...
Drainage path, 22 5 ...Drainage control valve, {19...Electronic control circuit, 20...Solenoid proportional valve} (control means).
Claims (1)
速段を備え、これら変速段に含まれる所定の低速
段への該所定の高速段からのダウンシフトは該所
定の高速段を確立する油圧係合要素の係合を解除
するのみで行われるようにした車両用油圧作動式
変速機であつて、該油圧係合要素に接続される排
油路にエンジンの低負荷時に開かれる排油制御弁
を介設するものにおいて、前記所定の高速段から
前記所定の低速段へのダウンシフトに際し該排油
制御弁をエンジン負荷に係らず開く制御手段を設
けたことを特徴とする車両用油圧作動式変速機の
制御装置。 A hydraulic engagement element comprising a plurality of gears capable of downshifting from a predetermined high gear, and a downshift from the predetermined high gear to a predetermined low gear included in these gears establishes the predetermined high gear. This is a hydraulically operated transmission for a vehicle that is operated by simply disengaging the hydraulic engagement element, and an oil drain control valve that is opened when the engine load is low is connected to the oil drain passage connected to the hydraulic engagement element. A hydraulically actuated transmission for a vehicle, characterized in that the hydraulically operated transmission for a vehicle is provided with a control means that opens the drain oil control valve regardless of engine load when downshifting from the predetermined high speed gear to the predetermined low gear. control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10656089U JPH0615161Y2 (en) | 1989-09-11 | 1989-09-11 | Control device for hydraulically actuated transmission for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10656089U JPH0615161Y2 (en) | 1989-09-11 | 1989-09-11 | Control device for hydraulically actuated transmission for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0346061U true JPH0346061U (en) | 1991-04-26 |
| JPH0615161Y2 JPH0615161Y2 (en) | 1994-04-20 |
Family
ID=31655289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10656089U Expired - Lifetime JPH0615161Y2 (en) | 1989-09-11 | 1989-09-11 | Control device for hydraulically actuated transmission for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0615161Y2 (en) |
-
1989
- 1989-09-11 JP JP10656089U patent/JPH0615161Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0615161Y2 (en) | 1994-04-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |