JPH048727U

JPH048727U -

Info

Publication number: JPH048727U
Application number: JP4898190U
Authority: JP
Priority date: 1990-05-10
Filing date: 1990-05-10
Publication date: 1992-01-27

Description

[Brief explanation of the drawing]

第１図〜第８図はこの考案を具体化した第１実
施例を示す図面であつて、第１図はシリンダヘツ
ドの一部を示す断面図、第２図は吸気装置を概略
的に示す平断面図、第３図はロータリー弁の開閉
タイミングの制御機構を示す断面図、第４図は吸
気弁、ロータリー弁及びサブロータリー弁の開閉
タイミングを説明する図、第５図〜第８図はこの
吸気装置の一連の作用を説明する図である。第９
図〜第１２図はこの考案を具体化した第２実施例
を示す図面であつて、第９図は吸気装置の概略構
成を示す図、第１０，１１図はその吸気装置にお
ける吸気制御弁の駆動機構を説明する断面図、第
１２図は吸気弁、吸気制御弁及び電磁弁の開閉タ
イミングを説明する図である。第１３図〜第１８
図はこの考案を具体化した第３実施例を示す図面
であつて、第１３図はシリンダヘツドの一部を示
す断面図、第１４図は吸気装置を概略的に示す平
断面図、第１５図はエンジン回転数と空気量との
関係を示す制御マツプ、第１６図〜第１８図はエ
ンジン回転数と空気量の大きさ別に設定された吸
気弁、ロータリー弁及び電磁弁の開閉タイミング
を説明する図である。第１９図はこの考案を具体
化した別の実施例における吸気制御弁の駆動機構
を示す図である。図中、１，２，３６，６１〜６３は吸気弁、５
，３８，６６は燃焼室、６，７，３４，６７〜６
９は吸気通路、６ａ，７ａ，３４ａ，６７ａ〜６
９ａは吸気ポート、９，７２は吸気制御弁として
のロータリー弁、５０は吸気制御弁、１０，５２
，７４は副通路、１２は副通路開閉手段としのて
サブロータリー弁、５３，７５は副通路開閉手段
としての電磁弁、１３，４９，７６は燃料供給手
段としてのインジエクタである。 Figures 1 to 8 are drawings showing a first embodiment embodying this invention, in which Figure 1 is a sectional view showing a part of the cylinder head, and Figure 2 schematically shows the intake device. 3 is a cross-sectional view showing the control mechanism for the opening/closing timing of the rotary valve, FIG. 4 is a diagram explaining the opening/closing timing of the intake valve, rotary valve, and sub-rotary valve, and FIGS. 5 to 8 are It is a figure explaining a series of actions of this intake device. 9th
12 to 12 are drawings showing a second embodiment embodying this invention, in which FIG. 9 shows a schematic configuration of an intake device, and FIGS. 10 and 11 show an intake control valve in the intake device. FIG. 12 is a sectional view illustrating the drive mechanism, and is a diagram illustrating the opening/closing timing of the intake valve, intake control valve, and electromagnetic valve. Figures 13 to 18
The figures are drawings showing a third embodiment embodying this invention, in which Fig. 13 is a sectional view showing a part of the cylinder head, Fig. 14 is a plan sectional view schematically showing the intake device, and Fig. 15 is a sectional view showing a part of the cylinder head. The figure is a control map showing the relationship between engine speed and air amount, and Figures 16 to 18 explain the opening/closing timing of intake valves, rotary valves, and solenoid valves set according to engine speed and air amount. This is a diagram. FIG. 19 is a diagram showing a drive mechanism for an intake control valve in another embodiment embodying this invention. In the figure, 1, 2, 36, 61-63 are intake valves, 5
, 38, 66 are combustion chambers, 6, 7, 34, 67-6
9 is an intake passage, 6a, 7a, 34a, 67a-6
9a is an intake port, 9, 72 is a rotary valve as an intake control valve, 50 is an intake control valve, 10, 52
, 74 are auxiliary passages, 12 is a sub rotary valve as auxiliary passage opening/closing means, 53, 75 are electromagnetic valves as auxiliary passage opening/closing means, and 13, 49, 76 are injectors as fuel supply means.

Claims

[Scope of Claim for Utility Model Registration] An intake valve that opens and closes an intake port leading to a combustion chamber in conjunction with the rotation of an internal combustion engine, and an intake control valve that controls opening and closing of an intake passage upstream of the intake port, In an intake system for an internal combustion engine, the amount of intake air into the combustion chamber is controlled by an overlap between an open period of the intake valve and an open period of the intake control valve, the intake system comprising: an intake system located downstream of the intake control valve; a sub-passage for introducing air into the sub-passage; sub-passage opening/closing means that opens the sub-passage only after the intake control valve is closed and immediately before the intake valve is closed; An intake device for an internal combustion engine, comprising: a fuel supply means for supplying fuel.