FUEL INJECTION SUCTION SYSTEM

• Main Author: MIZUI HIROSHI
• Format: Patent
• Language: English; Japanese
• Published: 27.01.2022
• Subjects: BLASTING; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; WEAPONS

To suppress or prevent atomization of spray fuel and adhesion of fuel to a wall surface of a suction passage according to an operation state of an internal combustion engine, while simplifying and downsizing a structure, in a configuration that injects fuel with an injector.SOLUTION: A fuel injection suction device comprises: a suction passage 12 leading to a suction valve of an internal combustion engine; an injector 30 that injects fuel into the suction passage; first assist air passages 41b, 42b that supply assist air in the vicinity of the injector; second assist air passages 41b, 43b that supply assist air between the injector and the suction valve; and an adjustment valve 50 that adjusts a flow rate ratio of assist air flowing through the first assist air passage and the second assist air passage.SELECTED DRAWING: Figure 1 【課題】インジェクタにより燃料を噴射する構成において、構造の簡素化、小型化を図りつつ、内燃エンジンの運転状態に応じて、噴霧燃料の微粒化、吸気通路の壁面への燃料の付着の抑制ないし防止を図る。【解決手段】燃料噴射吸気装置は、内燃エンジンの吸気バルブに向かう吸気通路１２と、吸気通路内に燃料を噴射するインジェクタ３０と、インジェクタの近傍においてアシストエアを供給する第１アシストエア通路４１ｂ，４２ｂと、インジェクタと吸気バルブの間においてアシストエアを供給する第２アシストエア通路４１ｂ，４３ｂと、第１アシストエア通路と第２アシストエア通路を流れるアシストエアの流量割合を調整する調整弁５０を備えている。【選択図】図１