JPS61183455U - - Google Patents
Info
- Publication number
- JPS61183455U JPS61183455U JP6653985U JP6653985U JPS61183455U JP S61183455 U JPS61183455 U JP S61183455U JP 6653985 U JP6653985 U JP 6653985U JP 6653985 U JP6653985 U JP 6653985U JP S61183455 U JPS61183455 U JP S61183455U
- Authority
- JP
- Japan
- Prior art keywords
- port
- partition wall
- fuel injection
- injection valve
- intake port
- 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
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims description 9
- 239000000446 fuel Substances 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
第１図は第７図の線―に相当する本考案の
吸気ポートの縦断面図、第２図、第３図、第４図
および第５図はそれぞれ第１図の線―，―
，―および―断面図、第６図は複吸気
弁式内燃機関のシリンダヘツド部分の概略図、第
７図は同横断面図、第８図は第２図と類似する断
面図であるが従来の吸気ポートの形状を示すもの
である。
２……吸気弁、３……吸気ポート、３ａ……吸
気ポート入口部、３ｂ，３ｃ……吸気ポート部分
、１０……シリンダヘツド、１２……燃料噴射弁
、１４……隔壁、１６……噴射弁取付穴。
Fig. 1 is a longitudinal sectional view of the intake port of the present invention corresponding to the line - in Fig. 7, and Figs. 2, 3, 4, and 5 are the lines -, - in Fig. 1, respectively.
, - and - sectional views, Fig. 6 is a schematic diagram of the cylinder head portion of a dual intake valve type internal combustion engine, Fig. 7 is a cross-sectional view of the same, and Fig. 8 is a sectional view similar to Fig. 2, but conventional This figure shows the shape of the intake port. 2... Intake valve, 3... Intake port, 3a... Intake port inlet portion, 3b, 3c... Intake port portion, 10... Cylinder head, 12... Fuel injection valve, 14... Partition wall, 16... Injection valve mounting hole.
Claims (1)
れ、下流側が隔壁により２つのポート部分に仕切
られ、該隔壁の上流側より該隔壁に向けて燃料を
噴射するように燃料噴射弁が設けられ、前記２つ
のポート部分は個別の吸気弁で開閉される複吸気
弁式内燃機関において、 前記吸気ポート入口部は略楕円形又は略トラツ
ク形断面形状を有し、前記燃料噴射弁の噴射中心
線が前記隔壁上流端の下部域に位置するように前
記燃料噴射弁を配置し、少なくとも燃料噴射弁の
中心線上の位置付近の領域で隔壁断面が薄肉に形
成され、前記隔壁の下流部では２つのポート部分
は略円形の断面形状を有することを特徴とする吸
気ポート。 ２ ２つのポート部分は、前記隔壁の上流端を燃
料噴射弁の噴射方向より見て、中央寄り下部の隅
部半径Ｒ２が該ポート部分の半径Ｒ１より小さく
、前記隅部半径は隔壁の下流側に進むに従つて徐
々に大きくなつている実用新案登録請求の範囲第
１項記載の吸気ポート。 ３ 隔壁の上流端側の稜線は燃料噴射弁の中心線
と約９０°で交差する実用新案登録請求の範囲第
１項記載の吸気ポート。[Claims for Utility Model Registration] 1. The inlet portion of the intake port is formed by one port, the downstream side is partitioned into two port portions by a partition wall, and fuel is injected toward the partition wall from the upstream side of the partition wall. In a dual intake valve type internal combustion engine in which a fuel injection valve is provided in the intake port, and the two port portions are opened and closed by individual intake valves, the intake port inlet portion has a substantially elliptical or track-shaped cross-sectional shape; The fuel injection valve is arranged such that the injection center line of the fuel injection valve is located in a lower region of the upstream end of the partition wall, and the partition wall cross section is formed to be thin at least in a region near a position on the center line of the fuel injection valve, An intake port characterized in that, at a downstream portion of the partition, two port portions have a substantially circular cross-sectional shape. 2 When looking at the upstream end of the partition wall from the injection direction of the fuel injection valve, the corner radius R 2 of the lower part of the two port portions closer to the center is smaller than the radius R 1 of the port portion, and the corner radius is smaller than the radius R 1 of the port portion. The intake port according to claim 1, which is a utility model, and which gradually becomes larger toward the downstream side. 3. The intake port according to claim 1, wherein the ridgeline on the upstream end side of the partition wall intersects the center line of the fuel injection valve at about 90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6653985U JPS61183455U (en) | 1985-05-07 | 1985-05-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6653985U JPS61183455U (en) | 1985-05-07 | 1985-05-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61183455U true JPS61183455U (en) | 1986-11-15 |
Family
ID=30599543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6653985U Pending JPS61183455U (en) | 1985-05-07 | 1985-05-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61183455U (en) |
-
1985
- 1985-05-07 JP JP6653985U patent/JPS61183455U/ja active Pending
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