JPS6434434U - - Google Patents
Info
- Publication number
- JPS6434434U JPS6434434U JP12798887U JP12798887U JPS6434434U JP S6434434 U JPS6434434 U JP S6434434U JP 12798887 U JP12798887 U JP 12798887U JP 12798887 U JP12798887 U JP 12798887U JP S6434434 U JPS6434434 U JP S6434434U
- Authority
- JP
- Japan
- Prior art keywords
- main
- surge tank
- intake
- sub
- 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
Landscapes
- Characterised By The Charging Evacuation (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Description
第１図は本考案による複吸気弁エンジンを示す
構成図、第２図は第１図の主及び副吸気弁のバル
ブリフト並びに燃料噴射時期を示す図、第３図は
吸気制御弁の開閉領域及びＥＧＲガスの供給領域
を示す図、第４図は第３図の変化例を示す図、第
５図は均質な分布の混合気の上層部にＥＧＲガス
を供給する場合の燃焼状態を示す図、第６図は成
層化された混合気の上層部にＥＧＲガスを供給す
る場合の燃焼状態を示す図、第７図は空燃比に対
する窒素酸化物１（ＮＯｘ）の発生量を示す図で
ある。
１２……燃焼室、１４……主吸気ポート、１６
……副吸気ポート、２２……主吸気弁、２４……
副吸気弁、３２……主サージタンク、３４……副
サージタンク、４０……スロツトル弁、４４……
吸気制御弁、４６……燃料噴射弁、４８……ＥＧ
Ｒ通路。
Fig. 1 is a configuration diagram showing a dual intake valve engine according to the present invention, Fig. 2 is a diagram showing the valve lift and fuel injection timing of the main and auxiliary intake valves in Fig. 1, and Fig. 3 is an opening/closing area of the intake control valve. FIG. 4 is a diagram showing a variation of FIG. 3, and FIG. 5 is a diagram showing a combustion state when EGR gas is supplied to the upper layer of a homogeneously distributed air-fuel mixture. , Fig. 6 is a diagram showing the combustion state when EGR gas is supplied to the upper layer of a stratified air-fuel mixture, and Fig. 7 is a diagram showing the amount of nitrogen oxide 1 (NOx) generated with respect to the air-fuel ratio. . 12... Combustion chamber, 14... Main intake port, 16
...Sub-intake port, 22...Main intake valve, 24...
Sub-intake valve, 32... Main surge tank, 34... Sub-surge tank, 40... Throttle valve, 44...
Intake control valve, 46...Fuel injection valve, 48...EG
R aisle.
Claims (1)
でスワールを形成させることのできる主吸気ポー
トと該主吸気ポートとは独立に形成された副吸気
ポートと、該主吸気ポート及び副吸気ポートにそ
れぞれ配置された主吸気弁及び該主吸気弁の開弁
時期より遅れて開弁する副吸気弁と、全気筒の主
吸気ポートに連結される主サージタンクと、全気
筒の副吸気ポートに連結されるサージタンクと、
これらの主サージタンクと副サージタンクとをそ
の上流部において合流せしめる共通の吸気管と、
該共通の吸気管に配置されたスロツトル弁と、エ
ンジンの高回転時に主サージタンクと副サージタ
ンクをスロツトル弁の下流側で連通することので
きる吸気制御弁と、主吸気ポートに燃料を供給す
ることのできる燃料供給手段と、排気通路から副
サージタンクに連結されたＥＧＲ通路とを具備す
ることを特徴とする複吸気弁エンジン。 A main intake port that can form a swirl in the combustion chamber that communicates with the combustion chamber of each cylinder, a sub-intake port that is formed independently of the main intake port, and the main intake port and the sub-intake port. A main intake valve and a sub-intake valve that open later than the opening timing of the main intake valve, a main surge tank that is connected to the main intake ports of all cylinders, and A connected surge tank,
a common intake pipe that joins the main surge tank and the sub-surge tank at an upstream portion;
A throttle valve disposed in the common intake pipe, an intake control valve capable of communicating a main surge tank and a sub-surge tank downstream of the throttle valve when the engine rotates at high speed, and supplying fuel to the main intake port. What is claimed is: 1. A dual-intake valve engine, characterized in that it is equipped with a fuel supply means that can be used as an engine, and an EGR passage that is connected from an exhaust passage to an auxiliary surge tank.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12798887U JPS6434434U (en) | 1987-08-25 | 1987-08-25 | |
| US07/232,211 US4856473A (en) | 1987-08-25 | 1988-08-15 | Internal combustion engine with multiple intake valves and EGR arrangement |
| DE3828742A DE3828742C3 (en) | 1987-08-25 | 1988-08-24 | Internal combustion engine with multiple intake valves and exhaust gas recirculation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12798887U JPS6434434U (en) | 1987-08-25 | 1987-08-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6434434U true JPS6434434U (en) | 1989-03-02 |
Family
ID=31380908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12798887U Pending JPS6434434U (en) | 1987-08-25 | 1987-08-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6434434U (en) |
-
1987
- 1987-08-25 JP JP12798887U patent/JPS6434434U/ja active Pending
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