JPS62117207U - - Google Patents
Info
- Publication number
- JPS62117207U JPS62117207U JP499886U JP499886U JPS62117207U JP S62117207 U JPS62117207 U JP S62117207U JP 499886 U JP499886 U JP 499886U JP 499886 U JP499886 U JP 499886U JP S62117207 U JPS62117207 U JP S62117207U
- Authority
- JP
- Japan
- Prior art keywords
- cam
- lift
- control
- control shaft
- step motor
- 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
- 238000001514 detection method Methods 0.000 claims description 2
- KJFBVJALEQWJBS-XUXIUFHCSA-N maribavir Chemical compound CC(C)NC1=NC2=CC(Cl)=C(Cl)C=C2N1[C@H]1O[C@@H](CO)[C@H](O)[C@@H]1O KJFBVJALEQWJBS-XUXIUFHCSA-N 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 1
Landscapes
- Valve Device For Special Equipments (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Control Of Stepping Motors (AREA)
Description
第１図はこの考案の構成を明示するための全体
構成図、第２図はこの考案の一実施例の全体構成
図、第３図はこの実施例でのコントロールユニツ
ト内で行なわれる動作を説明する流れ図、第４図
はレバー変位量特性図、第５図はこの実施例での
作用を説明する入力パルス周波数とカム制御軸の
応答との波形図である。第６図は従来例の吸排気
弁リフト可変機構の縦断面図、第７図は同じく平
面図、第８図はポテンシヨメータ出力の特性図、
第９図はステツプモータのトルク特性図、第１０
図は従来例での入力パルス周波数の波形図である
。
１……吸気弁用カム、２……吸気弁、３……弁
ばね、４……ロツカーアーム、４Ａ……ロツカー
アーム背面、５……ばね、６……レバー、８……
リフト制御カム、８Ａ〜８Ｄ……カム面、１０…
…コイルばね、１１……カム制御軸、１７……回
転数センサ、１８……絞り弁開度センサ、１９…
…ポテンシヨメータ、２０……吸排気弁リフト可
変機構、２１……ステツプモータ、２２……運転
状態検出手段、２３……目標位置設定手段、２４
……位置検出手段、２５……制御手段、２６……
判別手段、２７……入力パルス周波数可変手段、
４０……コントロールユニツト、４１……駆動回
路。
Figure 1 is an overall configuration diagram to clarify the configuration of this invention, Figure 2 is an overall configuration diagram of an embodiment of this invention, and Figure 3 explains the operations performed within the control unit in this embodiment. FIG. 4 is a lever displacement characteristic diagram, and FIG. 5 is a waveform diagram of the input pulse frequency and the response of the cam control shaft to explain the operation in this embodiment. FIG. 6 is a vertical cross-sectional view of a conventional intake/exhaust valve lift variable mechanism, FIG. 7 is a plan view of the same, and FIG. 8 is a characteristic diagram of potentiometer output.
Figure 9 is a torque characteristic diagram of a step motor, Figure 10 is a torque characteristic diagram of a step motor.
The figure is a waveform diagram of the input pulse frequency in a conventional example. 1...Intake valve cam, 2...Intake valve, 3...Valve spring, 4...Rotsuker arm, 4A...Rotsuker arm back, 5...Spring, 6...Lever, 8...
Lift control cam, 8A to 8D...Cam surface, 10...
... Coil spring, 11 ... Cam control shaft, 17 ... Rotation speed sensor, 18 ... Throttle valve opening sensor, 19 ...
... Potentiometer, 20 ... Intake and exhaust valve lift variable mechanism, 21 ... Step motor, 22 ... Operating state detection means, 23 ... Target position setting means, 24
...Position detecting means, 25...Control means, 26...
Discrimination means, 27...Input pulse frequency variable means,
40...Control unit, 41...Drive circuit.
Claims (1)
このリフト制御カムと弾性部材を介して連結され
るカム制御軸とを有し、弾性部材に蓄えられる弾
性エネルギにより回動するリフト制御カムの段階
的変化に応じてリフト特性を可変とする吸排気弁
リフト可変機構と、カム制御軸を回動するステツ
プモータと、カム制御軸の実際の位置を検出する
位置検出手段と、この検出された実際位置と目標
位置との偏差に応じた操作量を前記ステツプモー
タに出力する制御手段とを備える内燃機関の吸排
気弁リフト制御装置において、前記カム制御軸の
位置がリフト制御カムの安定域にあるか否かを判
別する判別手段と、カム制御軸の位置が安定域以
外にあるときの入力パルス周波数を安定域にある
ときよりも大きくする入力パルス周波数可変手段
とを設けたことを特徴とする内燃機関の吸排気弁
リフト制御装置。 The lift control cam has a lift control cam formed with a plurality of cam surfaces and a cam control shaft connected to the lift control cam via an elastic member, and the lift control cam rotates in stages by elastic energy stored in the elastic member. A variable intake/exhaust valve lift mechanism that changes the lift characteristics according to the change in lift characteristics, a step motor that rotates the cam control shaft, a position detection means that detects the actual position of the cam control shaft, and the detected actual position. and control means for outputting a manipulated variable to the step motor according to a deviation from a target position. and an input pulse frequency variable means for making the input pulse frequency larger when the position of the cam control shaft is outside the stable area than when it is in the stable area. Engine intake and exhaust valve lift control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP499886U JPS62117207U (en) | 1986-01-17 | 1986-01-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP499886U JPS62117207U (en) | 1986-01-17 | 1986-01-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62117207U true JPS62117207U (en) | 1987-07-25 |
Family
ID=30786172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP499886U Pending JPS62117207U (en) | 1986-01-17 | 1986-01-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62117207U (en) |
-
1986
- 1986-01-17 JP JP499886U patent/JPS62117207U/ja active Pending