JPH0356830U - - Google Patents
Info
- Publication number
- JPH0356830U JPH0356830U JP11666389U JP11666389U JPH0356830U JP H0356830 U JPH0356830 U JP H0356830U JP 11666389 U JP11666389 U JP 11666389U JP 11666389 U JP11666389 U JP 11666389U JP H0356830 U JPH0356830 U JP H0356830U
- Authority
- JP
- Japan
- Prior art keywords
- intake
- opens
- intake passage
- engine
- control valve
- 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
- 239000000446 fuel Substances 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Characterised By The Charging Evacuation (AREA)
Description
第１図は本考案の第１実施例に係るエンジンの
吸気装置の断面図、第２図は第１図の−線に
沿う断面図、第３図は第１図の装置における制御
弁の閉弁状態を示す断面図、第４図は第１図の
―線に沿う断面図、第５図は第１図の装置にお
ける吸気弁からの距離に対する吸気通路断面積の
変化を示す特性図、第６図は本考案の第２実施例
に係るエンジンの吸気装置の断面図、第７図は第
６図の−線に沿う断面図、第８図は第６図の
変形例を示す断面図、第９図は本考案の第３実施
例に係るエンジンの吸気装置の断面図、第１０図
は第９図の−線に沿う断面図、第１１図は第
９図の装置における制御弁の作動特性を示す特性
図、第１２図は従来のエンジンの吸気装置におけ
る吸気弁からの距離に対する吸気通路断面積の変
化を示す特性図、である。
１１…シリンダヘツド、１２…インテークマニ
ホールド、１３…コネクタ、１４…吸気弁、１５
…サイアミーズポート、１６…仕切壁、１７…第
１の吸気通路、１８…第２の吸気通路、２１…制
御弁、２５…燃料噴射弁、２６…バイパス通路、
３１，４１…逆止弁、Ａ…燃料噴射中心軸、Ｂ…
仕切壁中心の延長線。
FIG. 1 is a sectional view of an engine intake system according to a first embodiment of the present invention, FIG. 2 is a sectional view taken along the - line in FIG. 4 is a sectional view showing the valve state; FIG. 4 is a sectional view taken along the line - in FIG. 1; FIG. 6 is a sectional view of an engine intake system according to a second embodiment of the present invention, FIG. 7 is a sectional view taken along the line - in FIG. 6, and FIG. 8 is a sectional view showing a modification of FIG. 6. FIG. 9 is a sectional view of an engine intake system according to a third embodiment of the present invention, FIG. 10 is a sectional view taken along the - line in FIG. 9, and FIG. 11 is an operation of the control valve in the device shown in FIG. 9. FIG. 12 is a characteristic diagram showing the change in the cross-sectional area of the intake passage with respect to the distance from the intake valve in a conventional engine intake system. 11...Cylinder head, 12...Intake manifold, 13...Connector, 14...Intake valve, 15
... Siamese port, 16... Partition wall, 17... First intake passage, 18... Second intake passage, 21... Control valve, 25... Fuel injection valve, 26... Bypass passage,
31, 41...Check valve, A...Fuel injection center axis, B...
An extension line from the center of the partition wall.
Claims (1)
ズポートを有するエンジンにおいて、前記サイア
ミーズポートに吸気を導く第１の吸気通路と第２
の吸気通路に、低速運転時に閉弁し高速運転時に
開弁する制御弁を配設し、該制御弁の近傍に、上
流端が前記第１の吸気通路と第２の吸気通路のい
ずれか一方の前記制御弁上流側に開口し下流端が
前記サイアミーズポートの仕切壁中心の延長線上
でかつ燃料噴射中心軸の直上流に開口するバイパ
ス通路を設けたことを特徴とするエンジンの吸気
装置。 In an engine having a Siamese port in which two intake valves are arranged in each cylinder, a first intake passage that guides intake air to the Siamese port and a second intake passage
A control valve that closes during low-speed operation and opens during high-speed operation is arranged in the intake passage of An intake system for an engine, characterized in that a bypass passage is provided which opens upstream of the control valve and whose downstream end opens on an extension line of the center of the partition wall of the Siamese port and immediately upstream of the central fuel injection axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11666389U JPH0356830U (en) | 1989-10-05 | 1989-10-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11666389U JPH0356830U (en) | 1989-10-05 | 1989-10-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0356830U true JPH0356830U (en) | 1991-05-31 |
Family
ID=31664930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11666389U Pending JPH0356830U (en) | 1989-10-05 | 1989-10-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0356830U (en) |
-
1989
- 1989-10-05 JP JP11666389U patent/JPH0356830U/ja active Pending