JPH0349373U

JPH0349373U -

Info

Publication number: JPH0349373U
Application number: JP11018289U
Authority: JP
Priority date: 1989-09-20
Filing date: 1989-09-20
Publication date: 1991-05-14
Anticipated expiration: 2004-09-20
Also published as: JP2513612Y2

Description

[Brief explanation of drawings]

第１〜３図は本考案の一実施例としての成層燃
焼内燃エンジンを示すもので、第１図は本成層燃
焼内燃エンジンの全体構成を示す模式的平面図、
第２図は排気還流ガス噴出時の燃料噴射状態を示
す模式的平面図、第３図は排気還流ガス非噴出時
の燃料噴射状態を示す模式的平面図であり、第４
図は従来における両吸気ポートへの噴射状態を示
す模式的平面図であり、第５，６図は従来の成層
燃焼内燃エンジンを示すもので、第５図はその全
体構成を示す模式的平面図、第６図は燃焼室の透
視斜視図である。１……エンジン、２……気筒、２ａ……シリン
ダヘツド、３，４……吸気ポート、３ａ，４ａ…
…吸気ポート開口、５……吸気マニホールド、５
ａ，５ｂ……分岐管、５ｃ……サージタンク、６
……スロツトルバルブ、７……燃焼室、８……ピ
ストン、９……燃料噴射弁、９ｂ……噴射口、９
ｃ……燃料噴射弁の後端部、１０……点火栓、１
１……燃料デリバリパイプ、１２……吸気管、１
３……エアクリーナ、１４……排気還流ガスノズ
ル、１５……基管、１６……ＥＧＲバルブ、１６
ａ……弁部、１６ｂ……アクチユエータ、１７…
…ソレノイドバルブ、１７ａ……エアクリーナ、
１８，１９……パイプ、２０……ＥＣＵ、２１…
…エアフローセンサ、２２……ブーストセンサ、
２３……フライホイール、２４……クランク角セ
ンサ、２５……排気還流ガス通路、２６……排気
マニホールド、２７……排気通路、Ａ……排気還
流ガス、Ｘ，Ｙ……吸気ポートの平面投影軸線、
Ｚ……燃料噴射弁の中心線、Ｆ_１，Ｆ_２……噴射
燃料。 1 to 3 show a stratified combustion internal combustion engine as an embodiment of the present invention, and FIG. 1 is a schematic plan view showing the overall configuration of the present stratified combustion internal combustion engine;
FIG. 2 is a schematic plan view showing the fuel injection state when exhaust gas recirculation gas is ejected, FIG. 3 is a schematic plan view showing the fuel injection state when exhaust gas recirculation gas is not ejected, and FIG.
The figure is a schematic plan view showing the state of injection into both intake ports in the past. Figures 5 and 6 show a conventional stratified combustion internal combustion engine. Figure 5 is a schematic plan view showing the overall configuration. , FIG. 6 is a transparent perspective view of the combustion chamber. 1...Engine, 2...Cylinder, 2a...Cylinder head, 3, 4...Intake port, 3a, 4a...
...Intake port opening, 5...Intake manifold, 5
a, 5b...branch pipe, 5c...surge tank, 6
...Throttle valve, 7...Combustion chamber, 8...Piston, 9...Fuel injection valve, 9b...Injection port, 9
c... Rear end of fuel injection valve, 10... Spark plug, 1
1...Fuel delivery pipe, 12...Intake pipe, 1
3... Air cleaner, 14... Exhaust recirculation gas nozzle, 15... Base pipe, 16... EGR valve, 16
a... Valve part, 16b... Actuator, 17...
...Solenoid valve, 17a...Air cleaner,
18, 19...pipe, 20...ECU, 21...
...Air flow sensor, 22...Boost sensor,
23... Flywheel, 24... Crank angle sensor, 25... Exhaust recirculation gas passage, 26... Exhaust manifold, 27... Exhaust passage, A... Exhaust recirculation gas, X, Y... Planar projection of intake port axis,
Z: Center line of fuel injection valve, F ₁ , F ₂ : Injected fuel.

Claims

[Scope of utility model registration request]

The two intake ports that open into the combustion chamber of the cylinder,
These intake ports are arranged so that their planar projection axes are substantially perpendicular to the diameter of the cylinder, and a fuel injection valve that can supply fuel to the intake port side is provided, so that each of the above is performed during the engine intake stroke. In a stratified combustion internal combustion engine configured to generate a tumble flow flowing in the direction of reciprocating movement of a piston by intake air drawn into the combustion chamber from an intake port, an exhaust gas recirculation passage is provided to return exhaust gas to the intake passage side. An exhaust recirculation gas nozzle that can change the fuel injection direction of the fuel injection valve by exhaust recirculation gas supplied through the exhaust gas recirculation passage is provided near the fuel injection port of the fuel injection valve. Depending on the gas injection mode, the fuel injection valve
A stratified combustion internal combustion engine, characterized in that it is configured to be able to inject fuel toward one of the two intake ports, and to inject fuel toward each of the two intake ports.