JPH03114046U

JPH03114046U -

Info

Publication number: JPH03114046U
Application number: JP2361890U
Authority: JP
Priority date: 1990-03-08
Filing date: 1990-03-08
Publication date: 1991-11-22

Description

[Brief explanation of drawings]

第１図は本考案のアルコール含有率センサの一
実施例を示す縦断面平面図、第２図は同上の分解
斜視図、第３図は同上の縦断面正面図、第４図は
本考案を適用するアルコール混合燃料を用いるエ
ンジンの燃料制御系の一例を示す概略構成図、第
５図は従来のアルコール含有率センサの一例を示
す縦断面図、第６図は同上の要部を示す斜視図で
ある。７４……透光体、７４ａ……屈折面、７５……
反射部材、７５ａ……反射面、７７……発光素子
、７９……光位置検知素子、８２……測定空間、
８３……燃料入口、８４……燃料出口、Ａ……間
〓、７０……センサブロツク。 Fig. 1 is a longitudinal cross-sectional plan view showing one embodiment of the alcohol content sensor of the present invention, Fig. 2 is an exploded perspective view of the same, Fig. 3 is a longitudinal cross-sectional front view of the same, and Fig. 4 is a longitudinal cross-sectional view showing an embodiment of the alcohol content sensor of the present invention. A schematic configuration diagram showing an example of a fuel control system of an engine using an applied alcohol mixed fuel, FIG. 5 is a longitudinal sectional view showing an example of a conventional alcohol content sensor, and FIG. 6 is a perspective view showing the main parts of the same. It is. 74... Translucent body, 74a... Refracting surface, 75...
Reflection member, 75a... Reflection surface, 77... Light emitting element, 79... Optical position detection element, 82... Measurement space,
83... Fuel inlet, 84... Fuel outlet, A... Interval, 70... Sensor block.

Claims

[Claims for Utility Model Registration] A light emitting element and an optical position detection element are provided at one end of the light transmitting body, and the refracting surface at the other end of the light transmitting body is located in the fuel passage, and the light emitting element The refracted light incident on the fuel passage is reflected by a reflective surface of a reflective member provided in the fuel passage, and then made incident on the refracting surface again.
In an alcohol content sensor that detects the content of alcohol contained in fuel by making the refracted light enter the optical position detection element, the sensor block and the light transmitting body are fitted with and supporting the light transmitting body. An alcohol content sensor characterized in that a reflective member is fixed to the sensor block at a portion facing the refractive surface of the light transmitting body, with a gap formed between the reflective member and the end portion of the sensor block.