JPH0346060U - - Google Patents
Info
- Publication number
- JPH0346060U JPH0346060U JP10655989U JP10655989U JPH0346060U JP H0346060 U JPH0346060 U JP H0346060U JP 10655989 U JP10655989 U JP 10655989U JP 10655989 U JP10655989 U JP 10655989U JP H0346060 U JPH0346060 U JP H0346060U
- Authority
- JP
- Japan
- Prior art keywords
- speed
- low
- oil
- hydraulic engagement
- atmosphere
- 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 8
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Control Of Transmission Device (AREA)
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図はその油圧回
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図は変速特性を示す線図、第６
図はアツプシフト時の油圧クラツチの油圧の変化
特性を示す線図、第７図ａ，ｂは低速段確立時の
低速段と高速段の夫々のギアの噛合状態を示す図
である。
１……変速機、２……エンジン、Ｇ１，Ｇ２，
Ｇ３，Ｇ４……伝動系、Ｃ１，Ｃ２，Ｃ３，Ｃ４
……油圧クラツチ（油圧係合要素）、ＬＤ１，Ｌ
Ｄ２……排油路、ＬＤ５……排油路の下流部、２
２１……可変絞り手段、２２５……制御手段。
Figure 1 is a 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 the hydraulic circuit, and Figure 4 is the throttle. Figure 5 is a diagram showing the change characteristics of pressure and the output pressure of the pressure reducing valve.
The figure is a diagram showing the change characteristics of the oil pressure of the hydraulic clutch during upshifting, and FIGS. 7a and 7b are diagrams showing the engagement states of the respective gears of the low speed gear and the high speed gear when the low speed gear is established. 1...Transmission, 2...Engine, G1, G2,
G3, G4...Transmission system, C1, C2, C3, C4
...Hydraulic clutch (hydraulic engagement element), LD1, L
D2...Drainage path, LD5...Downstream portion of the oil drainage path, 2
2 1 ... variable aperture means, 22 5 ... control means.
Claims (1)
低速と高速の少なくとも２段の伝動系を備える車
両用油圧作動式変速機であつて、低速伝動系を確
立する低速油圧係合要素の排油路に、該排油路の
上流部と大気開放される下流部との間の連通面積
を高速伝動系を確立する高速油圧係合要素の油圧
の増加によつて増加する可変絞り手段を設けるも
のにおいて、排油路の下流部に、エンジンの低負
荷時に該下流部の大気開放面積を減少する制御手
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 hydraulically operated transmission for a vehicle comprising at least two stages of low-speed and high-speed transmission systems that are selectively established by separate hydraulic engagement elements, wherein the low-speed hydraulic engagement elements that establish the low-speed transmission system are eliminated. The oil passage is provided with a variable throttle means that increases the communication area between the upstream part of the oil drainage passage and the downstream part opened to the atmosphere by increasing the oil pressure of a high-speed hydraulic engagement element that establishes a high-speed transmission system. 1. A control device for a hydraulically actuated transmission for a vehicle, characterized in that a control means is provided at a downstream portion of an oil drain path to reduce an area open to the atmosphere in the downstream portion when the load of the engine is low.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10655989U JPH0636358Y2 (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 |
|---|---|---|---|
| JP10655989U JPH0636358Y2 (en) | 1989-09-11 | 1989-09-11 | Control device for hydraulically actuated transmission for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0346060U true JPH0346060U (en) | 1991-04-26 |
| JPH0636358Y2 JPH0636358Y2 (en) | 1994-09-21 |
Family
ID=31655288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10655989U Expired - Lifetime JPH0636358Y2 (en) | 1989-09-11 | 1989-09-11 | Control device for hydraulically actuated transmission for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0636358Y2 (en) |
-
1989
- 1989-09-11 JP JP10655989U patent/JPH0636358Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0636358Y2 (en) | 1994-09-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |