JPH0220729U

JPH0220729U -

Info

Publication number: JPH0220729U
Application number: JP9787988U
Authority: JP
Priority date: 1988-07-26
Filing date: 1988-07-26
Publication date: 1990-02-13

Description

[Brief explanation of the drawing]

第１図は第２図のＡ―Ａ線に沿つてみた内燃機
関の側面断面図、第２図はシリンダヘツド内壁面
の底面図、第３図は第２図のＡ―Ａ線に沿つてみ
た側面断面図、第４図は第２図のＢ―Ｂ線に沿つ
てみた側面断面図、第５図は別の実施例を示す内
燃機関の側面断面図、第６図は吸排気弁の開弁期
間を示す図である。５，６，７…吸気弁、８，９，１０…吸気ポー
ト、１１，１２…排気弁、１３…点火栓。 Figure 1 is a side sectional view of the internal combustion engine taken along line A-A in Figure 2, Figure 2 is a bottom view of the inner wall surface of the cylinder head, and Figure 3 is a view taken along line A-A in Figure 2. 4 is a side sectional view taken along line BB in FIG. 2, FIG. 5 is a side sectional view of an internal combustion engine showing another embodiment, and FIG. 6 is a side sectional view of the intake and exhaust valves. It is a figure showing a valve opening period. 5, 6, 7... Intake valve, 8, 9, 10... Intake port, 11, 12... Exhaust valve, 13... Spark plug.

Claims

[Scope of utility model registration request]

at least a pair of intake ports consisting of a first intake port and a second intake port;
The intake port includes a first intake valve disposed around the inner wall surface of the cylinder head, and the second intake port includes a second intake valve, and the first intake port is arranged in a substantially vertical direction around the first intake valve. By extending the air intake port, the air flowing in from the first intake port is
The second intake port is lowered along the inner wall surface of the cylinder head below the intake valve, and the second intake port is formed along a plane substantially parallel to the vertical plane passing through the first intake valve and the cylinder axis. An intake system for an internal combustion engine that is inclined so as to extend almost straight toward an inner wall surface of a cylinder head located on the opposite side of the inner wall surface of the cylinder head.