JPS6432958U - - Google Patents
Info
- Publication number
- JPS6432958U JPS6432958U JP12775987U JP12775987U JPS6432958U JP S6432958 U JPS6432958 U JP S6432958U JP 12775987 U JP12775987 U JP 12775987U JP 12775987 U JP12775987 U JP 12775987U JP S6432958 U JPS6432958 U JP S6432958U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- valve
- pair
- pressure
- belt
- 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 9
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 239000010720 hydraulic oil Substances 0.000 claims 6
- 239000003921 oil Substances 0.000 claims 6
- 239000012530 fluid Substances 0.000 claims 1
- 230000002040 relaxant effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 13
- 238000001514 detection method Methods 0.000 description 2
Description
【図面の簡単な説明】
第１図は第２図の装置を作動させるための油圧
制御装置を詳細に示す回路図である。第２図は本
考案の一実施例の車両に備えられた動力伝達装置
を示す骨子図である。第３図は第１図の第２調圧
弁を詳しく示す図である。第４図は第１図の第１
調圧弁を詳しく示す図である。第５図は第１図の
スロツトル弁開度検知弁の出力特性を示す図であ
る。第６図は第１図の速度比検知弁の出力特性を
示す図である。第７図は第３図の第２調圧弁の出
力特性を示す図である。第８図は第２ライン油圧
の理想特性を示す図である。第９図は第１図の変
速制御弁装置の構成を詳しく示す図である。第１
０図は、第９図の変速制御弁装置における第１電
磁弁および第２電磁弁の作動状態と第２図のＣＶ
Ｔのシフト状態との関係を説明する図である。第
１１図、第１２図、第１３図は、第２図のＣＶＴ
の速度比と各部の油圧値との関係を説明する図で
あつて、第１１図は正トルク走行状態、第１２図
はエンジンブレーキ走行状態、第１３図は無負荷
走行状態をそれぞれ示す図である。第１４図は、
第４図の第１調圧弁において一次側油圧シリンダ
内油圧または第２ライン油圧に対する出力特性を
示す図である。第１５図は、第２図の制御装置の
作動を説明するフローチヤートである。第１６図
は、考案明の他の実施例における流量切換弁のス
プール弁子を示す正面図である。第１７図および
第１８図は、本考案の他の実施例における、流量
切換弁断面図およびスプール弁子を取り除いた断
面図である。
１６……ＣＶＴ（ベルト式無段変速機）、５６
，５８……可変プーリ、６０……伝動ベルト、７
０，７２……油圧シリンダ（油圧アクチユエータ
）、８０……第１ライン油路、８２……第２ライ
ン油路、２６０……変速制御弁装置、２６２……
変速方向切換弁、２６４……流量切換弁（流量制
御弁）、２９１……バルブハウジング、２９３…
…穴（筒状穴）、２９５……ランド、２９７……
楔状の切欠、３７０……テーパ状の切欠、３７２
……楔状の切欠。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a detailed circuit diagram of a hydraulic control device for operating the device of FIG. 2. FIG. 2 is a schematic diagram showing a power transmission device installed in a vehicle according to an embodiment of the present invention. FIG. 3 is a diagram showing the second pressure regulating valve of FIG. 1 in detail. Figure 4 is the first part of Figure 1.
It is a figure showing a pressure regulating valve in detail. FIG. 5 is a diagram showing the output characteristics of the throttle valve opening detection valve shown in FIG. 1. FIG. 6 is a diagram showing the output characteristics of the speed ratio detection valve shown in FIG. 1. FIG. 7 is a diagram showing the output characteristics of the second pressure regulating valve shown in FIG. 3. FIG. 8 is a diagram showing ideal characteristics of the second line oil pressure. FIG. 9 is a diagram showing in detail the configuration of the speed change control valve device shown in FIG. 1. 1st
Figure 0 shows the operating states of the first solenoid valve and the second solenoid valve in the speed change control valve device of Figure 9 and the CV of Figure 2.
It is a figure explaining the relationship with the shift state of T. Figures 11, 12, and 13 show the CVT shown in Figure 2.
FIG. 11 is a diagram illustrating the relationship between the speed ratio and the oil pressure value of each part, and FIG. 11 is a diagram showing a positive torque running state, FIG. 12 is a diagram showing an engine brake running state, and FIG. 13 is a diagram showing a no-load running state. be. Figure 14 shows
FIG. 5 is a diagram showing the output characteristics of the first pressure regulating valve of FIG. 4 with respect to the primary side hydraulic cylinder internal oil pressure or the second line oil pressure. FIG. 15 is a flowchart illustrating the operation of the control device of FIG. 2. FIG. 16 is a front view showing a spool valve element of a flow rate switching valve in another embodiment of the invention. FIGS. 17 and 18 are cross-sectional views of a flow rate switching valve and a cross-sectional view with the spool valve removed, in other embodiments of the present invention. 16...CVT (belt type continuously variable transmission), 56
, 58... variable pulley, 60... transmission belt, 7
0, 72... Hydraulic cylinder (hydraulic actuator), 80... First line oil passage, 82... Second line oil passage, 260... Speed change control valve device, 262...
Speed change direction switching valve, 264...Flow rate switching valve (flow rate control valve), 291...Valve housing, 293...
...hole (cylindrical hole), 295...land, 297...
Wedge-shaped notch, 370...Tapered notch, 372
...Wedge-shaped notch.
Claims (1)
れ設けられた一対の可変プーリ間に巻き掛けられ
た伝動ベルトと、該一対の可変プーリの有効径を
変更する一対の油圧アクチユエータとを備えた車
両用ベルト式無段変速機の油圧制御装置であつて
、 油圧源から供給される作動油を、第１ライン油
圧に調圧して第１ライン油路へ導く第１調圧弁と
、 前記第１ライン油圧よりも相対的に低圧な第２
ライン油圧に調圧して第２ライン油路に導く第２
調圧弁と、 前記第１ライン油路内の作動油を前記一対の油
圧アクチユエータの一方に流入させると同時に該
一対の油圧アクチユエータの他方から前記第２ラ
イン油路または大気へ作動油を流出させる変速方
向切換弁と、前記一対の油圧アクチユエータの一
方に流入させる作動油の流量、或いは該一対の油
圧アクチユエータの他方から流出させられる作動
油の流量を変化させる流量制御弁とを備え、前記
ベルト式無段変速機の速度比を変化させる変速制
御弁装置と、 を含み、 前記流量制御弁が、バルブハウジングに形成さ
れた筒状穴内に摺動可能に嵌合されて前記作動油
の流量を制御するスプール弁子と、該スプール弁
子に設けられて前記作動油の流通路を開閉するラ
ンドと、該ランドまたは前記バルブハウジングに
形成され、前記スプール弁子の移動量に対する作
動油の流量変化量を緩和する切欠と、 を含むことを特徴とする車両用ベルト式無段変速
機の油圧制御装置。 (2) 前記切欠は、前記ランドに形成されたテー
パ状の切欠、楔状の切欠、階段状の切欠のいずれ
かである実用新案登録請求の範囲第１項に記載の
車両用ベルト式無段変速機の油圧制御装置。 (3) 前記切欠は、前記バルブハウジングの穴の
内周面であつて前記ランドと摺動する部分に形成
されたテーパ状の切欠、楔状の切欠、階段状の切
欠のいずれかである実用新案登録請求の範囲第１
項に記載の車両用ベルト式無段変速機の油圧制御
装置。[Claims for Utility Model Registration] (1) Changing the effective diameter of the transmission belt wrapped around a pair of variable pulleys provided on the primary rotation shaft and the secondary rotation shaft, respectively, and the pair of variable pulleys. A hydraulic control device for a belt-type continuously variable transmission for a vehicle, which is equipped with a pair of hydraulic actuators that adjust the pressure of hydraulic oil supplied from a hydraulic source to a first line hydraulic pressure and guide it to a first line oil path. a first pressure regulating valve; and a second pressure regulating valve having a relatively lower pressure than the first line hydraulic pressure.
The second line oil pressure is regulated to the line oil pressure and guided to the second line oil passage.
a pressure regulating valve; and a speed change that allows hydraulic oil in the first line oil passage to flow into one of the pair of hydraulic actuators and at the same time causes hydraulic oil to flow out from the other of the pair of hydraulic actuators to the second line oil passage or the atmosphere. The belt type non-contact valve includes a directional switching valve and a flow control valve that changes the flow rate of hydraulic oil flowing into one of the pair of hydraulic actuators or the flow rate of hydraulic oil flowing out from the other of the pair of hydraulic actuators. a speed change control valve device that changes a speed ratio of a step-change transmission; the flow control valve is slidably fitted into a cylindrical hole formed in a valve housing to control the flow rate of the hydraulic fluid. a spool valve element, a land provided on the spool valve element to open and close the flow passage for the hydraulic oil; A hydraulic control device for a belt-type continuously variable transmission for a vehicle, characterized in that it includes a notch for relaxing. (2) The belt-type continuously variable transmission for a vehicle according to claim 1, wherein the cutout is any one of a tapered cutout, a wedge-shaped cutout, and a step-shaped cutout formed in the land. Machine hydraulic control device. (3) A utility model in which the notch is any one of a tapered notch, a wedge-shaped notch, and a stepped notch formed on the inner circumferential surface of the hole of the valve housing at a portion that slides with the land. Scope of registration claims 1st
Hydraulic control device for a vehicle belt-type continuously variable transmission as described in 2.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12775987U JPS6432958U (en) | 1987-08-21 | 1987-08-21 | |
| EP88113523A EP0304085B1 (en) | 1987-08-21 | 1988-08-19 | Hydraulic control device for belt-and-pulley type continuously variable transmission for a vehicle |
| DE88113523T DE3885540T2 (en) | 1987-08-21 | 1988-08-19 | Hydraulic control device for a continuously variable pulley gear for vehicles. |
| US07/443,845 US4967621A (en) | 1987-08-21 | 1989-12-04 | Hydraulic control device for belt-and-pulley type continuously variable transmission for a vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12775987U JPS6432958U (en) | 1987-08-21 | 1987-08-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6432958U true JPS6432958U (en) | 1989-03-01 |
Family
ID=31380474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12775987U Pending JPS6432958U (en) | 1987-08-21 | 1987-08-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6432958U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013145967A1 (en) * | 2012-03-28 | 2013-10-03 | ジヤトコ株式会社 | Continuously variable transmission and hydraulic pressure control method therefor |
| JP2015203471A (en) * | 2014-04-15 | 2015-11-16 | トヨタ自動車株式会社 | Vehicle hydraulic control device |
| WO2016194597A1 (en) * | 2015-06-05 | 2016-12-08 | ジヤトコ株式会社 | Control device for continuously variable transmission |
-
1987
- 1987-08-21 JP JP12775987U patent/JPS6432958U/ja active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013145967A1 (en) * | 2012-03-28 | 2013-10-03 | ジヤトコ株式会社 | Continuously variable transmission and hydraulic pressure control method therefor |
| KR20140136461A (en) * | 2012-03-28 | 2014-11-28 | 쟈트코 가부시키가이샤 | Continuously variable transmission and hydraulic pressure control method therefor |
| CN104185751A (en) * | 2012-03-28 | 2014-12-03 | 加特可株式会社 | Continuously variable transmission and hydraulic pressure control method therefor |
| JPWO2013145967A1 (en) * | 2012-03-28 | 2015-12-10 | ジヤトコ株式会社 | Continuously variable transmission and hydraulic control method thereof |
| US9212732B2 (en) | 2012-03-28 | 2015-12-15 | Jatco Ltd | Continuously variable transmission and its hydraulic pressure control method |
| JP2015203471A (en) * | 2014-04-15 | 2015-11-16 | トヨタ自動車株式会社 | Vehicle hydraulic control device |
| WO2016194597A1 (en) * | 2015-06-05 | 2016-12-08 | ジヤトコ株式会社 | Control device for continuously variable transmission |
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