JPS6247744U

JPS6247744U -

Info

Publication number: JPS6247744U
Application number: JP13802785U
Authority: JP
Priority date: 1985-09-11
Filing date: 1985-09-11
Publication date: 1987-03-24

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す断面図、第２
図は同じく要部の拡大断面図、第３図は第２図の
―断面図、第４図は連通孔の他の実施例を示
す断面図、第５図は従来のアイドル空気流量の調
整部分を示す断面図、第６図は従来の補助空気流
量の調整部分を示す断面図である。１０……吸気通路、１２……吸気絞弁、１３…
…バイパス通路、１３ａ……上流側バイパス通路
、１３ｂ……下流側バイパス通路、１４……第１
のポート、１５……アイドルアジヤストスクリユ
ウ、１６……補助空気弁、１７……第２のポート
、１８……連通孔。 Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is an enlarged sectional view of the main part, FIG. 3 is a sectional view of FIG. 2, FIG. 4 is a sectional view showing another example of the communication hole, and FIG. FIG. 6 is a sectional view showing a conventional auxiliary air flow rate adjustment section. 10...Intake passage, 12...Intake throttle valve, 13...
...bypass passage, 13a...upstream bypass passage, 13b...downstream bypass passage, 14...first
port, 15...Idle adjuster screw, 16...Auxiliary air valve, 17...Second port, 18...Communication hole.

Claims

[Scope of utility model registration request]

An idle adjustment screw that increases or decreases the idle speed of the engine by adjusting the flow rate of intake air supplied to the engine by bypassing the intake throttle valve; In an internal combustion engine equipped with an auxiliary air control means for increasing and correcting the idle speed of the engine by increasing the flow rate, a bypass passage is provided whose upstream end opens into the intake passage upstream of the intake throttle valve,
An idle adjust screw is provided across the bypass passage to divide the bypass passage into an upstream bypass passage and a downstream bypass passage, and the downstream end of the upstream bypass passage and the intake passage downstream of the intake throttle valve are connected to the The idle adjusting screw is connected through a port facing the tip thereof, and connects the downstream side bypass passage and the intake passage downstream of the intake throttle valve via an auxiliary air valve, and is connected to the idle adjusting screw near the tip thereof. 1. An idle rotation speed adjusting device for an internal combustion engine, characterized in that a communication hole is provided that crosses the communication hole, and the upstream bypass passage and the downstream bypass passage are communicated with each other through the communication hole.