JPS6136504U

JPS6136504U - throttle sensor

Info

Publication number: JPS6136504U
Application number: JP12140184U
Authority: JP
Inventors: 克正宮崎
Original assignee: 国産電機株式会社
Priority date: 1984-08-09
Filing date: 1984-08-09
Publication date: 1986-03-06

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−図は本考案の一実施例を示した断面図、第２図は
第１図の実施例で磁気検出素子から得られる信号を示し
た線図、第３図は、同実施例で用いるバルブ開度検出信
号発生回路の構成例を示した回路図、第４図は本考案の
他の実施例の要部を示した断面図、第５図は第４図の実
施例で磁気検出素子から得られる検出信号の波形を示し
た線図である。１・・・気化器ハウジング、２・・・バルブガイド部、
′３・・・弁孔、４・・・空気流入口、５・・・混合気
流出口、８・・・スロットルバルブ、９・・・二一ドル
、１１・・・スロットルワイヤ、１２・・・バネ、２２
ａ〜２２ｃ，２２・・・磁気検出素子、２３・・・永久
磁石、３ｏ・・・バルブ開度検出信号発生回路、４０・
・・磁極片、３１，３４，３５・・・ナンド回路、３２
．３３・・・インバータ。Figure 1 is a sectional view showing one embodiment of the present invention, Figure 2 is a diagram showing the signal obtained from the magnetic detection element in the embodiment of Figure 1, and Figure 3 is a diagram showing the signal obtained from the magnetic detection element in the embodiment of Figure 1. A circuit diagram showing an example of the configuration of a valve opening detection signal generation circuit to be used, FIG. 4 is a sectional view showing the main part of another embodiment of the present invention, and FIG. 5 is a magnetic detection circuit using the embodiment of FIG. 4. FIG. 3 is a diagram showing the waveform of a detection signal obtained from the element. 1... Carburetor housing, 2... Valve guide section,
'3...Valve hole, 4...Air inlet, 5...Mixture mixture outlet, 8...Throttle valve, 9...21 dollars, 11...Throttle wire, 12... spring, 22
a to 22c, 22... Magnetic detection element, 23... Permanent magnet, 3o... Valve opening detection signal generation circuit, 40.
...Magnetic pole piece, 31, 34, 35...Nand circuit, 32
．． 33...Inverter.

Claims

[Scope of utility model registration request]

(1) In a throttle sensor for detecting the opening degree of the throttle valve of a carburetor for an internal combustion engine, the throttle valve is provided in the carburetor housing, and a permanent magnet fixed to the throttle valve and a A magnetic detection element is fixed to a wall facing the throttle valve and detects a magnetic field generated from the permanent magnet, and a signal output when the magnetic detection element detects a magnetic field of a predetermined strength is input to determine the valve opening. A throttle sensor comprising a valve opening detection signal generation circuit that outputs a detection signal.

(2) A plurality of the magnetic detection elements are provided and arranged at predetermined intervals in the direction of displacement of the throttle valve, and the permanent magnets are successively opposed to the magnetic detection elements in the process of displacement of the throttle valve. The valve opening degree detection signal generation circuit receives the output signals of the plurality of magnetic detection elements and detects a magnetic field having a strength of a certain value or more depending on the combination of magnetic detection elements. The throttle sensor according to claim 1, wherein the throttle sensor is configured to generate valve opening detection signals having different ring distortion values.

(3) The magnetic detection element is composed of an element whose output signal level changes depending on the strength of the magnetic field, and the permanent magnet has a strength that varies in stages according to the displacement of the throttle valve. The valve opening detection signal generation circuit is provided to apply a magnetic field, and the valve opening detection signal generation circuit is configured to discriminate the level of the detection signal obtained from the magnetic detection element and generate the valve opening detection signal. A throttle sensor according to claim 1 of the utility model registration claim.