JPS607057U

JPS607057U - Internal combustion engine smoke detector

Info

Publication number: JPS607057U
Application number: JP9906283U
Authority: JP
Inventors: 初雄永石; 剛北原
Original assignee: 日産自動車株式会社
Priority date: 1983-06-27
Filing date: 1983-06-27
Publication date: 1985-01-18

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 drawings]

第１図は、従来のスモーク検出器の一例を示す構成図、
第２図は、この考案を実施したスモーク検出器を備えた
スモーク制限装置の一例を示す構成図、第３図は、第２
図のスモーク検出器の一例を示す構成図、第４図は、こ
の考案によるスモーク検出器の他の例を示す構成図、第
５図は、第４図のチェック弁の動作説明に供する波形図
、第６図は、この考案によるスモーク検出器の更に他の
例を示す構成図である。２１・・・・・・ディーゼル機関、２３・・・・・・排
気管、２３ａ・・・・・・排気通路、３０・・・・・・
制御回路、３２・・・・・・スモーク検出器、３３・・
・・・・投受光部、３４・・・・・・空気流発生部、３
８・・・・・・発光素子、３９．４２・・・・・・中空
管、３９ａ、４２ａ・・・・・・光通路、４１・・・・
・・受光素子゛、４４・・・・・・空気ポンプ、４７・
・・・・・チェック弁、５５−−−−・−ロータリ弁、
５８−−−−−−ダイヤフラム装置。FIG. 1 is a configuration diagram showing an example of a conventional smoke detector;
FIG. 2 is a block diagram showing an example of a smoke restriction device equipped with a smoke detector implementing this invention, and FIG.
Fig. 4 is a block diagram showing another example of the smoke detector according to the invention; Fig. 5 is a waveform diagram for explaining the operation of the check valve shown in Fig. 4. , FIG. 6 is a block diagram showing still another example of the smoke detector according to this invention. 21... Diesel engine, 23... Exhaust pipe, 23a... Exhaust passage, 30...
Control circuit, 32...Smoke detector, 33...
...Light emitting and receiving section, 34... Air flow generation section, 3
8... Light emitting element, 39.42... Hollow tube, 39a, 42a... Optical path, 41...
... Light receiving element, 44 ... Air pump, 47.
・・・・・・Check valve, 55---Rotary valve,
58--Diaphragm device.

Claims

[Scope of utility model registration request]

A light emitting element that emits light into an exhaust passage of an internal combustion engine, and a light receiving element that receives light emitted from the light emitting element and transmitted through the exhaust passage or scattered by the exhaust passage, and the amount of light transmitted through the exhaust passage of the emitted light is In a smoke detector that detects smoke concentration in exhaust gas based on the above, a hollow path forming an optical path for introducing light from the light emitting element into the exhaust path;
a hollow tube forming an optical path that introduces light from the exhaust passage to the light receiving element; and an air flow generator that generates an air flow in the direction of flowing into the exhaust passage in the optical path of each hollow tube. A smoke detector for an internal combustion engine, characterized in that it is provided with means. ,