JPS6238433U

JPS6238433U -

Info

Publication number: JPS6238433U
Application number: JP12883085U
Authority: JP
Priority date: 1985-08-26
Filing date: 1985-08-26
Publication date: 1987-03-07

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例にかかる制御概念図
、第２図はそのエンジンの平面に沿つた断面図、
第３図はその縦断面図、第４図は本実施例にかか
る副ポートの連通位置を表す幾何概念図、第５図
及び第６図はそのスワール成分をベクトル表示し
たスワール原理図である。又、第７図及び第８図
は従来の可変スワール装置の一例を表す作動原理
図である。図中の符号で１はエンジン、４はピストン、６
は燃焼室、７は吸気弁座、８は吸気弁、９は主ポ
ート、１０ａ，１０ｂは副ポート、１１は吸気マ
ニホルド、１４ａ，１４ｂは弁体、１５はアクチ
ユエータ、１６はコントロールユニツト、Ｏ_１は
燃焼室の中心、Ｏ_２は吸気弁座の中心である。 Fig. 1 is a conceptual diagram of control according to an embodiment of the present invention, Fig. 2 is a sectional view along the plane of the engine,
FIG. 3 is a longitudinal sectional view thereof, FIG. 4 is a geometric conceptual diagram showing the communication position of the sub-port according to this embodiment, and FIGS. 5 and 6 are swirl principle diagrams showing the swirl components as vectors. Furthermore, FIGS. 7 and 8 are diagrams showing the operating principle of an example of a conventional variable swirl device. In the figure, 1 is the engine, 4 is the piston, and 6
1 is a combustion chamber, 7 is an intake valve seat, 8 is an intake valve, 9 is a main port, 10a, 10b are sub ports, 11 is an intake manifold, 14a, 14b are valve bodies, 15 is an actuator, 16 is a control unit, O ₁ is the center of the combustion chamber and _O2 is the center of the intake valve seat.

Claims

[Scope of utility model registration request]

A main port is formed along the tangential direction of the circumference of the cylinder and communicates with the combustion chamber at the upper end of the cylinder via an intake valve and generates an intake swirl flow in the combustion chamber, and a terminal end of the main port is provided with a main port. A plurality of sub-ports communicating with each other, and a flow rate control means for controlling the amount of intake air in each of these sub-ports, the intake air into the combustion chamber is defined by a plane including the axial center of the intake valve and the axial center of the cylinder. The communication position of one of the auxiliary ports with respect to the terminal end of the main port is set on the side where the blowing direction is the direction that reduces the intake swirl flow, and the main port is set on the side where the direction of the blowout direction is the direction that increases the intake swirl flow. A variable swirl device, characterized in that the communication position of the other sub-port is set with respect to the terminal end of the variable swirl device.