JPS61186724U

JPS61186724U -

Info

Publication number: JPS61186724U
Application number: JP7067285U
Authority: JP
Priority date: 1985-05-15
Filing date: 1985-05-15
Publication date: 1986-11-21
Also published as: JPH0433377Y2

Description

[Brief explanation of drawings]

第１図は内燃機関の側面断面図、第２図は第１
図の平面断面図、第３図は別の実施例の平面断面
図、第４図は更に別の実施例の平面断面図、第５
図は内燃機関の全体図、第６図は吸気弁の開弁期
間と噴射完了時期を示す線図、第７図は噴射開始
クランク角および噴射完了クランク角を求めるフ
ローチヤート、第８図は燃料噴射処理のためのフ
ローチヤート、第９図は制御時間と機関回転数の
関係を示す線図、第１０図はＲＯＭに記憶された
増量係数を示す線図である。５……燃焼室、６……点火栓、７……第１吸気
弁、８……第２吸気弁、９……第３吸気弁、１２
……第１吸気通路、１３……第２吸気通路、１４
……第３吸気通路、１９……吸気制御弁、２１…
…燃料噴射弁。 Figure 1 is a side cross-sectional view of the internal combustion engine, and Figure 2 is a cross-sectional side view of the internal combustion engine.
FIG. 3 is a plan sectional view of another embodiment, FIG. 4 is a plan sectional view of yet another embodiment, and FIG.
The figure is an overall diagram of the internal combustion engine, Figure 6 is a diagram showing the intake valve opening period and injection completion timing, Figure 7 is a flowchart for determining the injection start crank angle and injection completion crank angle, and Figure 8 is a fuel A flowchart for the injection process, FIG. 9 is a diagram showing the relationship between control time and engine speed, and FIG. 10 is a diagram showing the increase coefficient stored in the ROM. 5... Combustion chamber, 6... Spark plug, 7... First intake valve, 8... Second intake valve, 9... Third intake valve, 12
...First intake passage, 13...Second intake passage, 14
...Third intake passage, 19...Intake control valve, 21...
...Fuel injection valve.

Claims

[Scope of utility model registration request]

It is equipped with three intake valves consisting of a first intake valve, a second intake valve and a third intake valve, and three intake passages consisting of a first intake passage, a second intake passage and a third intake passage. A first intake passage for generating a swirling flow inside the room is connected to the combustion chamber through the first intake valve, and a second intake passage connected to the combustion chamber through the second intake valve is connected to the combustion chamber through the second intake valve. An intake control valve that opens during the intake stroke is disposed, and a fuel injection valve is disposed in a third intake passage connected to the combustion chamber via a third intake valve. In a fuel injection internal combustion engine in which the valve is opened from near top dead center to the beginning of the compression stroke, and the third intake valve is opened from near the center of the intake stroke to the beginning of the compression stroke, the valve diameters of the first intake valve and the second intake valve are is larger than the valve diameter of the third intake valve, and the fuel injection completion timing of the fuel injection valve is gradually advanced from the end of the intake stroke to the beginning of the intake stroke as the engine speed increases. A fuel-injected internal combustion engine.