JPS62713U - - Google Patents
Info
- Publication number
- JPS62713U JPS62713U JP9354685U JP9354685U JPS62713U JP S62713 U JPS62713 U JP S62713U JP 9354685 U JP9354685 U JP 9354685U JP 9354685 U JP9354685 U JP 9354685U JP S62713 U JPS62713 U JP S62713U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust valve
- cam
- lift
- closing timing
- control
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
Landscapes
- Valve Device For Special Equipments (AREA)
- Characterised By The Charging Evacuation (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
第１図〜第５図はこの考案に係る内燃機関の排
気弁リフト制御装置の第１実施例を示す図であり
、第１図はその全体構成図、第２図Ａはクランク
角と排気管内圧力との関係を示すグラフ、第２図
Ｂは排気弁の閉弁時期と充填効率との関係を示す
グラフ、第３図は駆動信号と排気弁の閉弁時期と
の関係を示すグラフ、第４図Ａ〜Ｅは各信号のタ
イムチヤート、第５図はその制御プログラムを示
すフローチヤート、第６図Ａ〜Ｅおよび第７図は
この考案の第２実施例を示す図であり、第６図Ａ
〜Ｅは各信号のタイムチヤート、第７図はその制
御プログラムを示すフローチヤート、第８図Ａ〜
Ｆおよび第９図Ａ〜Ｃはこの考案の第３実施例を
示す図であり、第８図Ａ〜Ｆは各信号のタイムチ
ヤート、第９図Ａ〜Ｃは制御プログラムを示す各
フローチヤート、第１０図は従来の内燃機関のバ
ルブリフト制御装置を示すその断面図である。
３……排気弁、１０……リフト制御カム、１０
Ａ……カム面、１１……カム制御軸、２５……排
気マニホルド（排気通路）、２８……リフト可変
機構、３１……圧力センサ（圧力検出手段）、３
２……制御回路（制御手段）、３３……ギヤツプ
センサ（閉弁時期検出手段）、３５……アクチユ
エータ（駆動手段）。
Figures 1 to 5 are diagrams showing a first embodiment of the exhaust valve lift control device for an internal combustion engine according to this invention. Figure 1 is its overall configuration, and Figure 2 A graph showing the relationship between pressure and Figure 2B is a graph showing the relationship between the exhaust valve closing timing and filling efficiency. Figure 3 is a graph showing the relationship between the drive signal and the exhaust valve closing timing. 4 A to E are time charts of each signal, FIG. 5 is a flow chart showing the control program, FIGS. 6 A to E and FIG. 7 are diagrams showing a second embodiment of this invention, and FIG. Diagram A
~E is a time chart of each signal, FIG. 7 is a flowchart showing its control program, and FIG. 8A~
F and FIGS. 9A to 9C are diagrams showing a third embodiment of this invention, FIGS. 8A to F are time charts of each signal, and FIGS. 9A to C are flowcharts showing control programs. FIG. 10 is a sectional view showing a conventional valve lift control device for an internal combustion engine. 3... Exhaust valve, 10... Lift control cam, 10
A...Cam surface, 11...Cam control shaft, 25...Exhaust manifold (exhaust passage), 28...Lift variable mechanism, 31...Pressure sensor (pressure detection means), 3
2... Control circuit (control means), 33... Gap sensor (valve closing timing detection means), 35... Actuator (drive means).
Claims (1)
応じて排気弁のリフト特性を可変とする排気弁リ
フト可変機構と、リフト制御カムを回動可能に支
持するカム制御軸を所定位置に回動駆動する駆動
手段と、排気通路内の前記排気弁の近傍の圧力を
検出する圧力検出手段と、排気弁の閉弁時期を検
出する閉弁時期検出手段と、前記圧力が最小値と
なる時期と前記閉弁時期とが一致するようにカム
制御軸を所定位置に回動するよう前記駆動手段を
駆動、制御する制御手段と、を備えたことを特徴
とする内燃機関の排気弁リフト制御装置。 An exhaust valve lift variable mechanism that changes the lift characteristics of the exhaust valve in response to changes in a lift control cam with a predetermined cam surface, and a cam control shaft that rotatably supports the lift control cam and is rotatably driven to a predetermined position. a drive means for detecting the pressure near the exhaust valve in the exhaust passage; a valve-closing timing detecting means for detecting the closing timing of the exhaust valve; 1. An exhaust valve lift control device for an internal combustion engine, comprising: control means for driving and controlling the drive means to rotate the cam control shaft to a predetermined position so as to coincide with the valve closing timing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9354685U JPS62713U (en) | 1985-06-19 | 1985-06-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9354685U JPS62713U (en) | 1985-06-19 | 1985-06-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62713U true JPS62713U (en) | 1987-01-06 |
Family
ID=30651325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9354685U Pending JPS62713U (en) | 1985-06-19 | 1985-06-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62713U (en) |
-
1985
- 1985-06-19 JP JP9354685U patent/JPS62713U/ja active Pending