JPS6218337U

JPS6218337U -

Info

Publication number: JPS6218337U
Application number: JP10971685U
Authority: JP
Priority date: 1985-07-19
Filing date: 1985-07-19
Publication date: 1987-02-03

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例の平面図、第２図、
第３図は同上実施例における燃料噴射方向切換弁
の拡大図で、第２図はエンジン低負荷低回転時の
位置を、第３図は同高負荷高回転時の位置をそれ
ぞれ示し、第４図、第５図は各吸気弁の動作時期
及びリフトと、燃料噴射弁の噴射時期を示すグラ
フで、第４図はエンジン低負荷低回転時を、第５
図は同高負荷高回転時をそれぞれ示し、第６図、
第７図は噴射燃料の供給状態を示し、第６図はエ
ンジンの低負荷低回転時を、第７図は同高負荷、
高回転時をそれぞれ示すものである。１……主吸気ポート、２……第１吸気ポート、
３……第２吸気ポート、４……第３吸気ポート、
５……主吸気制御弁、８……第１吸気弁、９……
燃焼室、１０……第２吸気弁、１１……副吸気制
御弁、１２……作動軸、１７……第３吸気弁、１
８……燃料噴射弁、１９……点火栓、２２……燃
料噴射方向切換弁、２３……偏向板。 Fig. 1 is a plan view of an embodiment of the present invention; Fig. 2;
Fig. 3 is an enlarged view of the fuel injection direction switching valve in the same embodiment as above, Fig. 2 shows the position at low engine load and low rotation, Fig. 3 shows the position at high engine load and high rotation, and Fig. Figure 5 is a graph showing the operating timing and lift of each intake valve and the injection timing of the fuel injection valve.
The figures show the same high load and high rotation times, and Fig. 6,
Figure 7 shows the supply status of the injected fuel, Figure 6 shows the engine at low load and low rotation, and Figure 7 shows the engine at high load and low rotation.
Each figure shows when the rotation speed is high. 1... Main intake port, 2... First intake port,
3...Second intake port, 4...Third intake port,
5... Main intake control valve, 8... First intake valve, 9...
Combustion chamber, 10... Second intake valve, 11... Sub-intake control valve, 12... Operating shaft, 17... Third intake valve, 1
8... Fuel injection valve, 19... Spark plug, 22... Fuel injection direction switching valve, 23... Deflection plate.

Claims

[Claims for Utility Model Registration] 1. A first intake port that is always open to generate a swirl in the intake air supplied into the combustion chamber, and an intake control valve that is opened only in the high-load, high-speed operating range of the engine; It is equipped with a second intake port that supplies straight intake air into the room, and a third intake port that is provided with a fuel injection valve.
and a third intake port respectively to the first, second and third intake ports.
In a dual intake valve engine, each of which is connected to a combustion chamber through an intake valve, and in which the opening timing of the third intake valve is delayed from the opening timing of the first intake valve,
A fuel injection direction switching valve that is linked to the opening and closing of the intake control valve of the second intake port is provided downstream of the fuel injection valve of the third intake port, and the fuel injection direction switching valve is connected to the opening and closing of the intake control valve of the second intake port. The injected fuel is distributed to the first and second intake ports by a switching valve, and the injection timing of the fuel injection valve is made earlier when the intake control valve is opened than when it is closed. Dual intake valve engine. 2. The fuel injection direction switching valve has a deflection plate that is attached to the operating shaft of the intake control valve and faces directly below the injection hole of the fuel injection valve when the intake control valve is opened, so that the injected fuel is When the intake control valve is opened, the first and second
The dual intake valve engine according to claim 1, wherein the intake valves are distributed to the intake ports of the utility model.