JPS6082561U

JPS6082561U - Bleed air control device for carburetor for supercharged engine

Info

Publication number: JPS6082561U
Application number: JP17521683U
Authority: JP
Inventors: 魚住　順蔵; 糟谷　一郷
Original assignee: 愛三工業株式会社
Priority date: 1983-11-12
Filing date: 1983-11-12
Publication date: 1985-06-07

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案を施した気化器を過給機付エンジンに組
付けた状態を示す上面図、第２図は本考案の一実施例の
要部欠截側面図、第３図はその制御電気回路の回路図、
第４図は経過時間を横軸にとり、制御電気回路の信号Ａ
ないしＨおよび過給圧、空気密度、燃料流量、燃料流量
、空燃比の変化を対比して示した線図である。なお図中、１は気化器、３は吸気通路、６はメインノズ
ル、７はフロ”−上室、８は燃料通路、１３は第１の空
気通路、１５は第２の空気通路、１７は電磁弁、３２は
第３の空気通路、３４は圧力検出センサ、３５は空燃比
検出センサ、３６は制御電気回路をそれぞれ示すもので
ある。Fig. 1 is a top view showing a carburetor according to the present invention installed in a supercharged engine, Fig. 2 is a cutaway side view of an embodiment of the present invention, and Fig. 3 is its side view. Schematic diagram of the control electrical circuit,
Figure 4 shows the elapsed time on the horizontal axis, and the signal A of the control electric circuit.
5 is a diagram showing a comparison of changes in H to H, supercharging pressure, air density, fuel flow rate, fuel flow rate, and air-fuel ratio. In the figure, 1 is a carburetor, 3 is an intake passage, 6 is a main nozzle, 7 is a flow chamber, 8 is a fuel passage, 13 is a first air passage, 15 is a second air passage, and 17 is a 32 is a third air passage, 34 is a pressure detection sensor, 35 is an air-fuel ratio detection sensor, and 36 is a control electric circuit.

Claims

[Claims for Utility Model Registration] An intake passage formed in the carburetor base is airtightly connected to the discharge side of the supercharger, and a main nozzle opened in the intake passage and a float chamber formed in the base are connected to the fuel In a carburetor that communicates through a passage and is intended to supply the engine with supercharging pressure air supplied from the discharge side of the supercharger and fuel supplied from the main nozzle to the intake passage, from the main nozzle of the intake passage. A solenoid valve for controlling the flow rate of air flowing through the bleed passage is disposed in the middle of a bleed air passage having one end opened on the upstream side and the other end opened to the fuel passage, and the solenoid valve is connected to the engine. The control is performed by the output of a control electric circuit that receives as input the output of an air-fuel ratio detection sensor disposed in the exhaust passage and the output of a pressure detection sensor that detects the pressure of air pressure supplied to the intake passage from the supercharger, The electric circuit is configured to control a signal output from the air-fuel ratio detection sensor that is proportional to the duration of the signal indicating that the air-fuel ratio is smaller than the stoichiometric air-fuel ratio, and a duration of the signal indicating that the air-fuel ratio is greater than the stoichiometric air-fuel ratio. and a signal component having a magnitude inversely proportional to the magnitude of the discharge pressure of the supercharger detected by the pressure detection sensor. A bleed air control device for a carburetor for a supercharged engine, characterized in that the flow rate of air flowing through the bleed air passage is increased as the output signal of the control electric circuit becomes larger.