JP6702430B2 - 無段変速機 - Google Patents
無段変速機 Download PDFInfo
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- JP6702430B2 JP6702430B2 JP2018552326A JP2018552326A JP6702430B2 JP 6702430 B2 JP6702430 B2 JP 6702430B2 JP 2018552326 A JP2018552326 A JP 2018552326A JP 2018552326 A JP2018552326 A JP 2018552326A JP 6702430 B2 JP6702430 B2 JP 6702430B2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
- F16H61/662—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members
- F16H61/66254—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members controlling of shifting being influenced by a signal derived from the engine and the main coupling
- F16H61/66259—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members controlling of shifting being influenced by a signal derived from the engine and the main coupling using electrical or electronical sensing or control means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
- F16H37/0833—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths
- F16H37/084—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths at least one power path being a continuously variable transmission, i.e. CVT
- F16H37/0846—CVT using endless flexible members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/06—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type
- F16H47/065—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type the mechanical gearing being of the friction or endless flexible member type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/0021—Generation or control of line pressure
- F16H61/0025—Supply of control fluid; Pumps therefore
- F16H61/0031—Supply of control fluid; Pumps therefore using auxiliary pumps, e.g. pump driven by a different power source than the engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
- F16H61/662—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members
- F16H61/66254—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members controlling of shifting being influenced by a signal derived from the engine and the main coupling
- F16H61/66263—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members controlling of shifting being influenced by a signal derived from the engine and the main coupling using only hydraulical and mechanical sensing or control means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
- F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
- F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
- F16H9/12—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
- F16H37/0833—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths
- F16H37/084—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths at least one power path being a continuously variable transmission, i.e. CVT
- F16H2037/088—Power split variators with summing differentials, with the input of the CVT connected or connectable to the input shaft
- F16H2037/0886—Power split variators with summing differentials, with the input of the CVT connected or connectable to the input shaft with switching means, e.g. to change ranges
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
- Transmissions By Endless Flexible Members (AREA)
- Gear-Shifting Mechanisms (AREA)
Description
図1は、車両の概略構成図である。車両は、エンジン1と、ロックアップクラッチ2a付きトルクコンバータ2と、前後進切替機構3と、バリエータ4と、終減速機構5と、駆動輪6と、油圧回路100と、を備える。
Fsa:差推力、Vp:PRIプーリ速度、Np:PRI回転数、C:ベルトの特性で定まる定数
PRI回転数Npはエンジン回転数と同視できるので、式(1)から、エンジン回転数が低い場合の方が、差推力が大きくなることがわかる。すなわち、主にエンジン回転数が低い場合に行われるダウンシフトの方が、アップシフトに比べて差推力が大きくなる。
Ppump:ポンプ出力、ΔP:電動オイルポンプの前後差圧、Qp:電動オイルポンプを通過する流量
そして、ダウンシフト時の電動オイルポンプ123の前後差圧ΔP、通過流量Qpは、それぞれ式(3)、(4)で表される。
Pp:PRI圧、Ps:SEC圧
Qp=Ap×Vp ・・・(4)
Ap:PRIピストン面積
式(4)から、ダウンシフト時にはPRIピストン面積Apを小さくするほど通過流量Qpが減少することがわかる。
Fs=As×Ps ・・・(6)
Fp:PRI推力、Fs:SEC推力、Ap:PRIピストン面積、As:SECピストン面積、Pp:PRI圧、Ps:SEC圧
ダウンシフト時はSEC推力がPRI推力より大きくなるので、差推力Fsaは式(7)で表される。
式(7)に式(1)、式(5)、式(6)を代入すると、式(8)が得られる。
式(8)から、ダウンシフト時にはPRIピストン面積を小さくするほどPRI圧が高まることがわかる。そして、式(3)に式(8)を代入すると、式(9)が得られる。
この式(9)から、ダウンシフト時にはPRIピストン面積を小さくするほど電動オイルポンプ123の前後差圧ΔPが小さくなることがわかる。
また、アップシフト時の電動オイルポンプ123の前後差圧ΔPは、式(11)で表される。なお、電動オイルポンプ123の通過流量Qpは式(4)と同じである。
式(9)に式(1)、式(11)を代入すると、式(12)が得られる。
式(12)から、アップシフト時にはPRIピストン面積を小さくするほどPRI圧が高まることがわかる。
この式(13)から、アップシフト時にはPRIピストン面積を小さくするほど電動オイルポンプ123の前後差圧ΔPが大きくなることがわかる。
本実施形態は、PRIピストン面積をSECピストン面積より小さくする点では第1実施形態と同様であるが、PRIピストン面積を設定するにあたり、上述した電動オイルポンプ123の小型化の観点だけでなく、さらに他の要素も考慮することとする。以下、考慮する要素毎に説明する。
図9は、縦軸をPRI圧とし、横軸をPRI推力として、PRIピストン面積と最大推力時におけるPRI圧との関係を示す図である。ここでいう最大推力とは、最も厳しい条件、つまり変速比が最ロー変速比でエンジン1から伝達されるトルクが最大トルク、において、所定の変速比を実現するために必要な推力である。
図10は、第1象限にPRI圧とPRI推力との関係を示し、第2象限にPRI圧とリーク量との関係を示した図である。ここでいう必要推力とは、ある変速比を実現するために必要となる推力である。最も厳しい条件、つまり変速比が最ロー変速比でエンジン1から伝達されるトルクが最大トルクの場合に、必要推力=最大推力となる。また、ここでいうリーク量とは、PRIプーリ油室41cにおけるリーク量である。
Claims (3)
- プライマリプーリのピストン油室とセカンダリプーリのピストン油室との間の油路に配置される電動オイルポンプと、
前記電動オイルポンプにより前記プライマリプーリのピストン油室の油の出入りを制御する制御部と、
を備える無段変速機において、
前記プライマリプーリのピストン面積が、前記セカンダリプーリのピストン面積よりも小さい無段変速機。 - 請求項1に記載の無段変速機において、
前記プライマリプーリのピストン面積は、前記プライマリプーリのピストン油室の油圧に対する前記油路のリーク特性に基づいて、前記プライマリプーリの推力が最大となったときの前記油路のリーク量が予め設定した供給流量制限値を超えない大きさに設定されている無段変速機。 - 請求項1に記載の無段変速機において、
前記プライマリプーリのピストン面積は、前記プライマリプーリの推力が最大となったときの前記プライマリプーリのピストン油室の油圧が油圧回路に用いられる部品の耐圧性から定まる上限油圧を超えない大きさに設定されている無段変速機。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2016/084826 WO2018096621A1 (ja) | 2016-11-24 | 2016-11-24 | 無段変速機 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2018096621A1 JPWO2018096621A1 (ja) | 2019-10-17 |
JP6702430B2 true JP6702430B2 (ja) | 2020-06-03 |
Family
ID=62195817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2018552326A Active JP6702430B2 (ja) | 2016-11-24 | 2016-11-24 | 無段変速機 |
Country Status (6)
Country | Link |
---|---|
US (1) | US10865859B2 (ja) |
EP (1) | EP3546793B1 (ja) |
JP (1) | JP6702430B2 (ja) |
CN (1) | CN109964059B (ja) |
MX (1) | MX2019005796A (ja) |
WO (1) | WO2018096621A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7415107B2 (ja) * | 2021-02-22 | 2024-01-17 | ジヤトコ株式会社 | センサの配置構造 |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
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US4475416A (en) * | 1982-07-27 | 1984-10-09 | Borg-Warner Corporation | Continuously variable transmission down shift control |
DE3934506C1 (ja) * | 1989-10-16 | 1991-05-08 | Ford-Werke Ag, 5000 Koeln, De | |
NL1009954C1 (nl) * | 1998-08-27 | 2000-02-29 | Gear Chain Ind Bv | Regelsysteem voor een continu variabele transmissie met twee door een eindloos transmissiemiddel gekoppelde in loopstraal instelbare kegelschijfparen. |
JP3498901B2 (ja) * | 1998-12-25 | 2004-02-23 | 日産自動車株式会社 | ベルト式無段変速機の制御装置 |
DE19918541A1 (de) * | 1999-04-23 | 2000-10-26 | Zahnradfabrik Friedrichshafen | Umschlingungsgetriebe |
WO2001020198A1 (en) * | 1999-09-15 | 2001-03-22 | Van Doorne's Transmissie B.V. | Control system for continuously variable transmission and continuously variable transmission wherein such is utilised |
US6287227B1 (en) * | 1999-09-20 | 2001-09-11 | General Motors Corporation | Hydraulic control for a continuously variable transmission |
JP4038097B2 (ja) * | 2002-09-03 | 2008-01-23 | ジヤトコ株式会社 | ベルト式無段変速機の油圧センサフェール制御装置 |
JP3786198B2 (ja) * | 2002-09-30 | 2006-06-14 | ジヤトコ株式会社 | ベルト式無段変速機の変速油圧制御装置 |
EP1606134A4 (en) * | 2003-03-19 | 2008-10-08 | Univ California | METHOD AND SYSTEM FOR REGULATING RATE-SHIFTING SPEED IN CONTINUOUSLY VARIABLE TRANSMISSION |
DE10354157A1 (de) * | 2003-11-21 | 2005-06-23 | Zf Friedrichshafen Ag | Kegelscheibenumschlingungsgetriebe |
US7686715B2 (en) * | 2004-07-08 | 2010-03-30 | Gm Global Technology Operations, Inc. | Hybrid clamping mechanism for belt continuously variable transmission and method of use thereof |
JP4164057B2 (ja) | 2004-09-24 | 2008-10-08 | ジヤトコ株式会社 | ベルト式無段変速機 |
JP4145856B2 (ja) * | 2004-10-05 | 2008-09-03 | ジヤトコ株式会社 | ベルト式無段変速機のライン圧制御装置 |
JP4649998B2 (ja) * | 2005-01-17 | 2011-03-16 | トヨタ自動車株式会社 | 無段変速機の受圧面差を伴う変速制御装置 |
JP4641852B2 (ja) * | 2005-04-11 | 2011-03-02 | ジヤトコ株式会社 | ベルト式無段変速機の変速制御装置 |
JP2008240894A (ja) | 2007-03-27 | 2008-10-09 | Jtekt Corp | 無段変速機のサーボポンプの流量制御方法および流量制御装置 |
WO2008050687A1 (fr) | 2006-10-23 | 2008-05-02 | Jtekt Corporation | Dispositif de commande pour une transmission continue, procédé de commande de débit et dispositif de commande de débit |
JP5310468B2 (ja) * | 2009-10-14 | 2013-10-09 | トヨタ自動車株式会社 | ベルト型無段変速機の油圧制御装置 |
BR112013020911A2 (pt) * | 2011-02-24 | 2016-10-04 | Honda Motor Co Ltd | aparelho para controlar uma transmissão continuamente variável |
NL1039925C2 (nl) * | 2012-12-03 | 2014-06-04 | Gear Chain Ind Bv | Stelsel voor het regelen van een continu variabele transmissie. |
JP6307589B2 (ja) * | 2014-02-20 | 2018-04-04 | ジヤトコ株式会社 | 油圧制御装置、及びその制御方法 |
JP6412351B2 (ja) * | 2014-06-30 | 2018-10-24 | ジヤトコ株式会社 | 無段変速機の制御装置及び制御方法 |
NL1041280B1 (nl) * | 2015-04-21 | 2017-01-26 | Gear Chain Ind Bv | Regelstelsel voor een continu variabele transmissie. |
-
2016
- 2016-11-24 JP JP2018552326A patent/JP6702430B2/ja active Active
- 2016-11-24 WO PCT/JP2016/084826 patent/WO2018096621A1/ja unknown
- 2016-11-24 MX MX2019005796A patent/MX2019005796A/es unknown
- 2016-11-24 EP EP16922354.2A patent/EP3546793B1/en active Active
- 2016-11-24 CN CN201680090868.2A patent/CN109964059B/zh active Active
- 2016-11-24 US US16/461,935 patent/US10865859B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP3546793A1 (en) | 2019-10-02 |
MX2019005796A (es) | 2019-08-12 |
CN109964059B (zh) | 2022-12-02 |
US10865859B2 (en) | 2020-12-15 |
JPWO2018096621A1 (ja) | 2019-10-17 |
WO2018096621A1 (ja) | 2018-05-31 |
CN109964059A (zh) | 2019-07-02 |
US20190323581A1 (en) | 2019-10-24 |
EP3546793A4 (en) | 2019-11-13 |
EP3546793B1 (en) | 2021-03-03 |
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