JPS6165004A - Variable valve timing device - Google Patents
Variable valve timing deviceInfo
- Publication number
- JPS6165004A JPS6165004A JP18510684A JP18510684A JPS6165004A JP S6165004 A JPS6165004 A JP S6165004A JP 18510684 A JP18510684 A JP 18510684A JP 18510684 A JP18510684 A JP 18510684A JP S6165004 A JPS6165004 A JP S6165004A
- Authority
- JP
- Japan
- Prior art keywords
- teeth
- moving gear
- hydraulic cylinder
- cam shaft
- timing
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/34403—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using helically teethed sleeve or gear moving axially between crankshaft and camshaft
- F01L1/34406—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using helically teethed sleeve or gear moving axially between crankshaft and camshaft the helically teethed sleeve being located in the camshaft driving pulley
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は自動車等の内燃機関に適用される可変バルブタ
イミング装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a variable valve timing device applied to internal combustion engines such as automobiles.
従来例を第２図に示す。図に示すのはアルファロメオ型
可変バルブタイミング装置であシ、カムシャフト（１）
先端部には軸方向に平行歯（１）Ａが形成されておシ、
該平行歯（１）Ａは該カムシャフト（１）に外嵌される
移動歯車（２）の内周に形成される平行歯（２）Ａと噛
合する。該移動歯車（２）の外周には螺旋状歯（２）Ｂ
が形成されておシ、該螺旋状歯（２）Ｂは該移動歯車（
２）に外嵌されるタイミングブー１バ３）の内周に形成
される螺旋状歯（３）Ａと噛合する。該移動歯車（２）
は基部（５）に軸方向に摺動自在に嵌着されておシ、ス
プリング（４）によって矢印イ方向に付勢されておシ、
更にカムシャフト（１）の油路（１）Ｂに連絡する基部
（５）の油路（５）Ａから及ぼされる油圧によって移動
歯車（２）は矢印口方向に押出される。そして基部（５
）の移動歯車（２）摺動面には油漏洩防止のため油シー
ル部（５）Ｂが取付けられている。A conventional example is shown in FIG. The figure shows an Alfa Romeo type variable valve timing device, camshaft (1)
Parallel teeth (1) A are formed in the axial direction at the tip.
The parallel teeth (1)A mesh with parallel teeth (2)A formed on the inner periphery of a moving gear (2) externally fitted on the camshaft (1). The moving gear (2) has spiral teeth (2) B on its outer periphery.
is formed, and the spiral tooth (2) B is formed on the moving gear (
It meshes with the spiral teeth (3)A formed on the inner periphery of the timing boom 1 and bar 3) that are fitted onto the outside of the timing boom 2). The moving gear (2)
is fitted into the base (5) so as to be slidable in the axial direction, and is biased in the direction of arrow A by the spring (4).
Further, the moving gear (2) is pushed out in the direction of the arrow by the hydraulic pressure applied from the oil passage (5)A of the base (5) which communicates with the oil passage (1)B of the camshaft (1). and the base (5
) An oil seal portion (5)B is attached to the sliding surface of the moving gear (2) to prevent oil leakage.
上記構成において、移動歯車（２）にカムシャフト（１
）の油路（１）Ｂから基部（５）の油路（５）Ａを介し
て油圧が及ぼされると移・動歯車（２）は、スプリング
（４）の弾性に抗して矢引口方向に摺動する。このよう
に移動歯車（２）の摺動によシ該移動歯車（２）の螺旋
状歯（２）Ｂと噛合するタイミングブー１バ３）の螺旋
状歯（３）Ａを介してタイミングブー１バ３）がそれに
応じて角度を変位する。上記油圧が及ぼされない場合に
は移動歯車（２）はスプリング（４）の弾性により元の
位置に戻る。In the above configuration, the moving gear (2) is connected to the camshaft (1).
) When hydraulic pressure is applied from the oil passage (1) B of the base part (5) through the oil passage (5) A of the base (5), the movable gear (2) resists the elasticity of the spring (4) and moves to the arrow opening. slide in the direction. In this way, the sliding of the moving gear (2) causes the timing boot to move through the helical tooth (3) A of the timing boot 1 bar 3) which meshes with the helical tooth (2) B of the moving gear (2). 1 bar 3) displaces the angle accordingly. When the hydraulic pressure is not applied, the moving gear (2) returns to its original position due to the elasticity of the spring (4).
〔発明が解決しようとする問題点り
上記従来技術にあっては移動歯車（２）は油圧およびス
プリング（４）の弾性によって設定された位置間を往復
摺動するのみであシ、したがってタイミングブー１バ３
）もある設定された角度を０Ｎ−ＯＦＦ変位するだけで
あった。それ故に内燃機関の運転状況に応じてタイミン
グプーリ（３）を所定の角度に変位させることが出来ず
運転状態に応じて満足したトルク特性および燃費特性が
得られないと云う問題点があった。更に油シール部（５
）Ｂからの油漏も完全に防ぐことが出来ないと云う問題
点もあった。[Problems to be Solved by the Invention] In the above-mentioned prior art, the movable gear (2) only slides back and forth between set positions by the oil pressure and the elasticity of the spring (4). 1ba 3
) was also only a 0N-OFF displacement at a certain set angle. Therefore, there is a problem in that the timing pulley (3) cannot be displaced to a predetermined angle depending on the operating condition of the internal combustion engine, and satisfactory torque characteristics and fuel efficiency characteristics cannot be obtained depending on the operating condition. Furthermore, the oil seal part (5
) There was also the problem that oil leakage from B could not be completely prevented.
本発明は上記従来の問題点を解決する手段として、カム
シャフト先端部に形成された軸方向の平行歯と噛合する
平行歯を内周に形成し、外周にはタイミングプーリ内周
に形成された螺旋状歯と噛合する螺旋状歯を形成した移
動歯車と、該移動歯車を軸方向に摺動させる油圧シリン
ダーとからなシ、該油圧シリンダーに及ぼされる油圧は
内燃機関の運転状態に応じて制御されることを骨子とす
るものである。As a means to solve the above conventional problems, the present invention forms parallel teeth on the inner periphery that mesh with axial parallel teeth formed on the tip of the camshaft, and on the outer periphery, parallel teeth are formed on the inner periphery of the timing pulley. A movable gear formed with helical teeth that mesh with the helical teeth, and a hydraulic cylinder that slides the movable gear in the axial direction, and the hydraulic pressure applied to the hydraulic cylinder is controlled according to the operating state of the internal combustion engine. The main point is that it will be done.
上記構成において、移動歯車は油圧シリンダーによって
軸方向に往復摺動させられる。移動歯車が往復摺動する
と移動歯車の螺旋状歯と噛合するタイミングプーリの螺
旋状歯を介してタイミングプーリが移動歯車の摺動位置
に応じた角度変位を行なう。そして移動歯車の摺動位置
は油圧シリンダーに及はされる油圧によって決マシ、該
油圧は内燃機関の運転状態に応じて制御される。
′〔発明の効果〕
したがって本発明においては運転状態に応じてタイミン
グプーリを所定の角度に変位させることが出来、運転状
態に応じて満足したトルク特性および燃費特性を得るこ
とが出来る。また移動歯車に１接油圧が及ぼされるので
はないから油漏れの心配もなくなる。In the above configuration, the moving gear is caused to reciprocate in the axial direction by the hydraulic cylinder. When the movable gear slides back and forth, the timing pulley performs an angular displacement according to the sliding position of the movable gear via the helical teeth of the timing pulley that mesh with the helical teeth of the movable gear. The sliding position of the moving gear is determined by the oil pressure applied to the hydraulic cylinder, and the oil pressure is controlled according to the operating state of the internal combustion engine.
[Effects of the Invention] Accordingly, in the present invention, the timing pulley can be displaced to a predetermined angle depending on the operating condition, and satisfactory torque characteristics and fuel efficiency characteristics can be obtained depending on the operating condition. Furthermore, since no hydraulic pressure is applied to the moving gear, there is no need to worry about oil leakage.
本発明を第１図に示す一実施例によって説明すれば、（
１１）はカムシャフトであり先端部には軸方向に平行歯
αυＡが形成されており、（１２１は該カムシャツ）（
１１）に外嵌される移動歯車であり該移動歯車α２の内
周には平行歯（１２Ａが形成きれ、該平行歯α２Ａはカ
ムシャフトα℃の平行歯α１）Ａと噛合している。The present invention will be explained using an embodiment shown in FIG.
11) is a camshaft, and parallel teeth αυA are formed in the axial direction at the tip, (121 is the cam shirt) (
Parallel teeth (12A) are formed on the inner periphery of the moving gear α2, and the parallel teeth α2A mesh with the parallel teeth α1)A of the camshaft α°C.
更に移動歯ｘａ’ａの外周には螺旋状歯（１６Ｂが形成
されており、該螺旋状歯αｌは該移動歯車０ｚに外嵌さ
れるタイミングブーＩＪ（１３）の内周に形成される螺
旋状歯（１３１Ａと噛合する。該移動歯車（１ｚはカム
シャフトαυに前後摺動自在に外嵌されておシ、スプリ
ング（１４１によって矢印へ方向に押圧されている。α
９は油圧シリンダーであシ該油圧シリンダー０９のロッ
ドαＱはシリンダへラドＵの軸受けα８１Ａに回動自在
に取付けられている連結棒αηの下端に連絡し、該連結
棒鰭の上端は移動歯車（１″２の後端フランジ部Ｃ１２
１０に連結している。そして該油圧シリンダーＣ１５１
には油圧制御弁α場を介して油圧が及ぼされるようにな
っておシ、該油圧制御弁０嗜は内燃機関の回転数、吸気
圧、その他の内燃機関の運転状態をあられすデータがイ
ンプットされるコントロールユニット（１）によって制
御される。Further, a spiral tooth (16B) is formed on the outer periphery of the moving gear xa'a, and the spiral tooth αl is a spiral tooth formed on the inner periphery of the timing boot IJ (13) that is fitted onto the outer periphery of the moving gear 0z. The movable gear (1z) is externally fitted onto the camshaft αυ so as to be slidable back and forth, and is pressed in the direction of the arrow by a spring (141).
9 is a hydraulic cylinder, and the rod αQ of the hydraulic cylinder 09 is connected to the lower end of a connecting rod αη rotatably attached to the bearing α81A of the rod U to the cylinder, and the upper end of the connecting rod fin is connected to a moving gear ( 1″2 rear end flange part C12
It is connected to 10. And the hydraulic cylinder C151
Hydraulic pressure is now applied to the oil pressure control valve α field, and the oil pressure control valve 0 inputs data indicating the internal combustion engine rotation speed, intake pressure, and other operating conditions of the internal combustion engine. is controlled by a control unit (1).
上記構成において、内燃機関の運転状態に応じてコント
ロールユニット（１）は油圧制御弁α９を制御し、該油
圧制御弁ａすにてそれにもとづいて制御された油圧が油
圧シリンダー（至）に゛及ぼされると、該油圧シリンダ
ーＱ５はロッドＱＱ１連結棒＠を介して移動歯車（２）
を運転状態に応じた位置にスプリングα荀の弾性に抗し
て摺動せしめる。移動歯車の位置はかくして油圧シリン
ダー（至）に及はされる油圧と、スプリングα荀の弾性
とのバランスした位置である。In the above configuration, the control unit (1) controls the hydraulic control valve α9 according to the operating state of the internal combustion engine, and the hydraulic pressure controlled based on the hydraulic control valve a is applied to the hydraulic cylinder (to). When the hydraulic cylinder Q5 is connected to the moving gear (2) via the rod QQ1 connecting rod @
is made to slide against the elasticity of the spring α to a position corresponding to the operating condition. The position of the moving gear is thus a position that balances the oil pressure applied to the hydraulic cylinder and the elasticity of the spring α.
移動歯車＠の摺動によシ該移動歯車（２）の螺旋状歯（
２）Ｂに噛合する螺旋状歯（至）Ａを介してタイミング
プーリ（至）が角度を変位する。タイミングプーリＱ３
の角度変位は移動歯車＠の摺動位置に対応し、かくして
タイミングプーリ＠は内燃機関の運転状態に応じて所定
の角度変位を行なうことになる。The sliding of the moving gear (2) causes the spiral teeth (
2) The timing pulley (to) is angularly displaced via the spiral tooth (to) A that meshes with B. Timing pulley Q3
The angular displacement corresponds to the sliding position of the moving gear @, and thus the timing pulley @ makes a predetermined angular displacement depending on the operating state of the internal combustion engine.
第１図は本発明にか＼る一実施例の主要部切欠き説明図
、第２図は従来例の主要部切欠き説明図である。
図中 Ｕ岬・・カムシャフト、ｅｌｌ）Ａ・・・平行歯
、α２・−移動歯１１α２Ａ−・・平行歯、０３Ｂ・・
・螺旋状歯、０・・・タイミングプーリ、α鵠Ａ・・・
螺旋状歯、ａ４）・・・スプリング、α９・・・油圧シ
リンダー
特許出願人 愛知機械工業株式会社才 ２ 目
比FIG. 1 is a cutaway diagram of the main part of an embodiment according to the present invention, and FIG. 2 is a cutaway diagram of the main part of a conventional example. In the diagram: U cape...Camshaft, ell) A...Parallel teeth, α2...Moving teeth 11α2A-...Parallel teeth, 03B...
・Spiral tooth, 0...timing pulley, α鵠A...
Spiral tooth, A4)...Spring, α9...Hydraulic cylinder Patent applicant Aichi Machine Industry Co., Ltd. Sai 2 ratio
Claims (1)
する平行歯を内周に形成し、外周にはタイミングプーリ
内周に形成された螺旋状歯と噛合する螺旋状歯を形成し
た移動歯車と、該移動歯車を軸方向に摺動させる油圧シ
リンダーとからなり、該油圧シリンダーに及ぼされる油
圧は内燃機関の運転状態に応じて制御されることを特徴
とする可変バルブタイミング装置A moving gear with parallel teeth formed on the inner periphery that mesh with the axial parallel teeth formed on the tip of the camshaft, and spiral teeth formed on the outer periphery that mesh with the spiral teeth formed on the inner periphery of the timing pulley. and a hydraulic cylinder that slides the movable gear in the axial direction, and the hydraulic pressure applied to the hydraulic cylinder is controlled according to the operating state of the internal combustion engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18510684A JPS6165004A (en) | 1984-09-04 | 1984-09-04 | Variable valve timing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18510684A JPS6165004A (en) | 1984-09-04 | 1984-09-04 | Variable valve timing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6165004A true JPS6165004A (en) | 1986-04-03 |
Family
ID=16164958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18510684A Pending JPS6165004A (en) | 1984-09-04 | 1984-09-04 | Variable valve timing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6165004A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01113111U (en) * | 1988-01-23 | 1989-07-31 | ||
| FR3027055A1 (en) * | 2014-10-14 | 2016-04-15 | Renault Sa | VALVE OPENING / CLOSING TIMER OFFSET CONTROL FOR A MOTOR VEHICLE ENGINE |
| DE102007023617B4 (en) * | 2007-05-18 | 2020-06-04 | Herbert Naumann | Camshaft adjuster |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57200604A (en) * | 1981-06-03 | 1982-12-08 | Hitachi Ltd | Monitoring method and unit for valve casing |
-
1984
- 1984-09-04 JP JP18510684A patent/JPS6165004A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57200604A (en) * | 1981-06-03 | 1982-12-08 | Hitachi Ltd | Monitoring method and unit for valve casing |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01113111U (en) * | 1988-01-23 | 1989-07-31 | ||
| DE102007023617B4 (en) * | 2007-05-18 | 2020-06-04 | Herbert Naumann | Camshaft adjuster |
| FR3027055A1 (en) * | 2014-10-14 | 2016-04-15 | Renault Sa | VALVE OPENING / CLOSING TIMER OFFSET CONTROL FOR A MOTOR VEHICLE ENGINE |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5056478A (en) | Variable camshaft phasing mechanism | |
| US2260983A (en) | Control means for internal combustion engines | |
| JPS6165004A (en) | Variable valve timing device | |
| US1632223A (en) | Cam-shaft control | |
| US1148478A (en) | Engine-gearing. | |
| US2391380A (en) | Valve control for internalcombustion engines | |
| EP1712762A2 (en) | Transmissible connecting mechanism | |
| US1299264A (en) | Explosion-engine. | |
| US1289498A (en) | Internal-combustion engine. | |
| US2304472A (en) | Control mechanism for internal combustion engines | |
| GB1368721A (en) | Piston for internal combustion engines | |
| US1599552A (en) | Braking device for internal-combustion engines | |
| CN106574521B (en) | Valve gear for internal combustion engine | |
| JPH0111926Y2 (en) | ||
| JP2002242626A (en) | Variable valve system of internal combustion engine | |
| US1314553A (en) | I lanoqhapli co | |
| US1150291A (en) | Valve-timer for internal-combustion engines. | |
| US1266046A (en) | Variable-cut-off valve mechanism. | |
| US1237314A (en) | Reversing mechanism for internal-combustion engines. | |
| JPH0122443B2 (en) | ||
| US1237054A (en) | Reversible four-cycle engine. | |
| US1659043A (en) | Method for increasing the efficiency of injection air compressors of internal-combustion engines | |
| US1291316A (en) | Internal-combustion engine. | |
| JPS63277815A (en) | Mirror cycle engine | |
| US759857A (en) | Valve mechanism for engines. |