JPS646336U - - Google Patents
Info
- Publication number
- JPS646336U JPS646336U JP9998987U JP9998987U JPS646336U JP S646336 U JPS646336 U JP S646336U JP 9998987 U JP9998987 U JP 9998987U JP 9998987 U JP9998987 U JP 9998987U JP S646336 U JPS646336 U JP S646336U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust valve
- compression ratio
- internal combustion
- change
- combustion engine
- 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
- 230000006835 compression Effects 0.000 claims 3
- 238000007906 compression Methods 0.000 claims 3
- 238000002485 combustion reaction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
Description
第１〜５図は本考案に係るもので、第１図は要
部構成斜視図、第２図は排気弁駆動用油圧ポンプ
の給油穴位置が変化した場合の排気弁リフト変化
の説明図、第３図はクランク角に対する排気弁リ
フトの関係線図、第４図は本考案適用時の機関性
能変化線図、第５図は本考案に、低負荷時燃料噴
射タイミングを進める従来手段を付加したときの
機関性能変化線図、第６図は従来例の第４図応当
図である。
６…リンク系、７…ロードノツチ、８…排気弁
、１０…給油孔。
Figures 1 to 5 are related to the present invention, where Figure 1 is a perspective view of the main part configuration, Figure 2 is an explanatory diagram of changes in exhaust valve lift when the position of the oil supply hole of the hydraulic pump for driving the exhaust valve changes, Figure 3 is a relationship diagram of exhaust valve lift with respect to crank angle, Figure 4 is a diagram of changes in engine performance when the present invention is applied, and Figure 5 is a diagram of the present invention with the addition of a conventional means for advancing fuel injection timing at low load. FIG. 6 is a diagram corresponding to FIG. 4 of the conventional example. 6... Link system, 7... Load notch, 8... Exhaust valve, 10... Oil supply hole.
Claims (1)
て連結して排気弁の閉タイミングを変化させ給気
孔位置を上下方向に変化させる排気弁駆動用油圧
ポンプを有してなり、低負荷時には給油孔位置を
上昇させて排気弁の閉タイミングを早め圧縮比を
上昇せしめることを特徴とする内燃機関の圧縮比
可変装置。 It has a hydraulic pump for driving the exhaust valve, which is connected via a link system to a load notch that indicates the engine load to change the closing timing of the exhaust valve and change the position of the air supply hole in the vertical direction. A variable compression ratio device for an internal combustion engine, characterized in that the variable compression ratio of an internal combustion engine is increased by increasing the compression ratio by advancing the closing timing of an exhaust valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9998987U JPS646336U (en) | 1987-07-01 | 1987-07-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9998987U JPS646336U (en) | 1987-07-01 | 1987-07-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS646336U true JPS646336U (en) | 1989-01-13 |
Family
ID=31327654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9998987U Pending JPS646336U (en) | 1987-07-01 | 1987-07-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS646336U (en) |
-
1987
- 1987-07-01 JP JP9998987U patent/JPS646336U/ja active Pending
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