JPH01116242U - - Google Patents
Info
- Publication number
- JPH01116242U JPH01116242U JP1112488U JP1112488U JPH01116242U JP H01116242 U JPH01116242 U JP H01116242U JP 1112488 U JP1112488 U JP 1112488U JP 1112488 U JP1112488 U JP 1112488U JP H01116242 U JPH01116242 U JP H01116242U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- output
- pressure
- oil pressure
- control device
- 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 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Control Of Transmission Device (AREA)
Description
第１図は本考案の実施例の油圧回路を示す図、
第２図は自動変速機の骨組図、第３図はソレノイ
ドバルブによつて得られる油圧特性を示す図、第
４図はデユーテイ比信号及び油圧の変化特性を示
す図である。
１０……１―２シフトバルブ、２６……２―３
シフトバルブ、５８……電子制御装置、７０……
ロツクアツプ制御バルブ、８０……ソレノイドバ
ルブ。
FIG. 1 is a diagram showing a hydraulic circuit according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the automatic transmission, FIG. 3 is a diagram showing oil pressure characteristics obtained by a solenoid valve, and FIG. 4 is a diagram showing change characteristics of a duty ratio signal and oil pressure. 10...1-2 shift valve, 26...2-3
Shift valve, 58... Electronic control device, 70...
Lockup control valve, 80...Solenoid valve.
Claims (1)
するソレノイドバルブと、ソレノイドバルブに電
気信号を与える電子制御装置と、スプールの位置
が切換信号圧によつて切換られる第１バルブ及び
第２バルブの少なくとも２つのバルブと、を有し
ており、電子制御装置はソレノイドバルブによる
切換信号圧として、順に油圧値が大きくなる第１
油圧、第２油圧及び第３油圧の少なくとも３段階
の油圧を調整させる電気信号を出力可能であり、
これらの油圧は第１油圧が出力されたとき第１バ
ルブ及び第２バルブを第１位置にし、第２油圧が
出力されたとき第１バルブを第２位置とすると共
に第２バルブを第１位置にし、また第３油圧が出
力されたとき第１バルブ及び第２バルブを共に第
２位置にする大きさに設定されており、電子制御
装置は第１バルブ及び第２バルブを共に第１位置
から第２位置に切換ええる際には、まず第３油圧
よりも高い油圧に対応する電気信号を出力し、第
１所定時間後に第２油圧より高く第３油圧よりも
低い油圧に対応する電気信号を出力し、次いで第
２所定時間経過後に第３油圧に対応する電気信号
を出力するように構成される自動変速機の制御装
置。 A solenoid valve that outputs a switching signal pressure in response to an applied electrical signal, an electronic control device that provides an electrical signal to the solenoid valve, and at least a first valve and a second valve whose spool positions are switched in accordance with the switching signal pressure. It has two valves, and the electronic control device uses the first valve whose hydraulic pressure increases in order as the switching signal pressure by the solenoid valve.
It is possible to output an electric signal for adjusting at least three levels of oil pressure: oil pressure, second oil pressure, and third oil pressure,
These hydraulic pressures set the first valve and the second valve to the first position when the first hydraulic pressure is output, and set the first valve to the second position and the second valve to the first position when the second hydraulic pressure is output. and the size is set such that when the third hydraulic pressure is output, both the first valve and the second valve are moved to the second position, and the electronic control device moves both the first valve and the second valve from the first position. When switching to the second position, an electrical signal corresponding to an oil pressure higher than the third oil pressure is first output, and after a first predetermined time, an electrical signal corresponding to an oil pressure higher than the second oil pressure and lower than the third oil pressure is output. A control device for an automatic transmission configured to output an electric signal corresponding to a third hydraulic pressure and then output an electric signal corresponding to a third hydraulic pressure after a second predetermined time has elapsed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1112488U JPH0538286Y2 (en) | 1988-02-01 | 1988-02-01 | |
| US07/730,391 US5154100A (en) | 1988-02-01 | 1991-07-15 | System for controlling automatic power transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1112488U JPH0538286Y2 (en) | 1988-02-01 | 1988-02-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01116242U true JPH01116242U (en) | 1989-08-04 |
| JPH0538286Y2 JPH0538286Y2 (en) | 1993-09-28 |
Family
ID=31219395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1112488U Expired - Lifetime JPH0538286Y2 (en) | 1988-02-01 | 1988-02-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0538286Y2 (en) |
-
1988
- 1988-02-01 JP JP1112488U patent/JPH0538286Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0538286Y2 (en) | 1993-09-28 |
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