JPS6224035U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一実施例の側面断面図、第２
図は第１図の平面断面図、第３図は同上実施例の
全体図、第４図は同上実施例における第１吸気弁
及び第２吸気弁の開弁時期、第２燃料噴射弁の燃
料噴射時期、及び吸入空気の流速を考慮した最適
の燃料噴射完了時期を示す線図、第５図は第１及
び第２の吸気弁の開弁時期と、第１及び第２の燃
料噴射弁の燃料噴射時期を示す線図、第６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７図は燃料噴射処理のた
めのフローチヤート、第８図は制御時間と機関回
転数の関係を示す線図、第９図はＲＯＭに記憶さ
れた増量計数を示す線図、第１０図は別の実施例
のフローチヤート、第１１図はＲＯＭに記憶され
た噴射開始クランク角を示す線図である。 ５…燃焼室、６…点火栓、７…第１吸気弁、８
…第２吸気弁、１０…第１吸気通路、１１…第２
吸気通路、１５…第２燃料噴射弁、３０…第１燃
料噴射弁。 Figure 1 is a side cross-sectional view of one embodiment of the present invention;
The figure is a plan sectional view of FIG. 1, FIG. 3 is an overall view of the same embodiment, and FIG. 4 is the opening timing of the first intake valve and the second intake valve in the same embodiment, and the fuel of the second fuel injection valve. A diagram showing the injection timing and the optimal fuel injection completion timing considering the intake air flow velocity, FIG. A diagram showing fuel injection timing, Figure 6 is a flowchart for determining the injection start crank angle and injection completion crank angle, Figure 7 is a flowchart for fuel injection processing, and Figure 8 is a flowchart for determining the control time and engine speed. A diagram showing the relationship, FIG. 9 is a diagram showing the increase count stored in the ROM, FIG. 10 is a flowchart of another embodiment, and FIG. 11 is a diagram showing the injection start crank angle stored in the ROM. It is a diagram. 5... Combustion chamber, 6... Spark plug, 7... First intake valve, 8
...Second intake valve, 10...First intake passage, 11...Second
Intake passage, 15...second fuel injection valve, 30...first fuel injection valve.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 第１吸気弁および第２吸気弁からなる２個の吸
気弁と、第１吸気通路および第２吸気通路からな
る２個の吸気通路とを具備し、燃焼室内に旋回流
を発生させるための第１吸気通路が第１吸気弁を
介して燃焼室内に連結され、第２吸気弁を介して
燃焼室内に連結された第２吸気通路内に燃料噴射
弁を配置し、第１吸気弁が吸気行程の上死点付近
から圧縮行程始めまで開弁すると共に第２吸気弁
が吸気行程の中央付近から圧縮行程始めまで開弁
し、燃料噴射弁の燃料噴射完了時期を機関回転数
が増大するにつれて吸気行程末期から吸気行程始
めに向けて徐々に早めるようにした燃料噴射式内
燃機関において、前記第１吸気通路内にも別の燃
料噴射弁を配置し、該燃料噴射弁を機関の高負荷
運転域においてのみ作動させるようにしたことを
特徴とする、複数の吸気弁を具えた燃料噴射式内
燃機関。 It is equipped with two intake valves consisting of a first intake valve and a second intake valve, and two intake passages consisting of a first intake passage and a second intake passage, and a second intake passage for generating a swirling flow in the combustion chamber. A fuel injection valve is disposed in a second intake passage connected to the combustion chamber via the first intake valve, and a fuel injection valve is disposed within the second intake passage connected to the combustion chamber via the second intake valve. The valve opens from near top dead center to the beginning of the compression stroke, and the second intake valve opens from near the center of the intake stroke to the beginning of the compression stroke, and the fuel injection completion timing of the fuel injection valve changes as the engine speed increases. In a fuel-injected internal combustion engine that gradually accelerates the intake stroke from the end of the stroke to the beginning of the intake stroke, another fuel injection valve is disposed within the first intake passage, and the fuel injection valve is used in the high-load operating range of the engine. A fuel-injected internal combustion engine equipped with a plurality of intake valves, characterized in that the engine is operated only when the engine is in operation.