JPS60189844U

JPS60189844U - Sensor for detecting the amount of particulate matter deposited in exhaust gas

Info

Publication number: JPS60189844U
Application number: JP7656484U
Authority: JP
Inventors: 伸一竹島
Original assignee: トヨタ自動車株式会社
Priority date: 1984-05-26
Filing date: 1984-05-26
Publication date: 1985-12-16

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図は本考案の電極部の構造を前面より見て示す図、
第２図は上面図、第３図は本考案のセンサの原理的構成
図、第４図は電極部へのパティキュレートの堆積状態を
説明する模式図、第５図は第４図の等価回路図、第６図
はインピーダンスと付着率との棟式的関係図、第７図は
電極へのパティキュレート付着率δとトラップ材へのパ
ティキュレート付着率δ′との模式的関係線図、第８図
は本考案のセンサを有したパティキュレートの捕集及び
焼却システムを備えたディーゼル機関の全体図、第９図
は第８図のトラップ材の部分の前面図、第１０図は第８
図の制御回路のブロック図、第１１図は第８図の制御回
路のソフトウェア構成を示すフローチャート図、第１２
図はトラップ材に直接電極層を形成する実施例の概念図
。１０．１２・・・電極、１４・・・電極部、１６・・・
交流電源、１８・・・インピーダンス測定部。Figure 1 is a diagram showing the structure of the electrode section of the present invention viewed from the front;
Fig. 2 is a top view, Fig. 3 is a basic configuration diagram of the sensor of the present invention, Fig. 4 is a schematic diagram explaining the state of particulate accumulation on the electrode section, and Fig. 5 is an equivalent circuit of Fig. 4. Figure 6 is a schematic relationship diagram between impedance and attachment rate, Figure 7 is a schematic relationship diagram between particulate attachment rate δ to the electrode and particulate attachment rate δ' to the trap material, and Figure 6 is a schematic relationship diagram between impedance and attachment rate. Fig. 8 is an overall view of a diesel engine equipped with a particulate collection and incineration system having a sensor of the present invention, Fig. 9 is a front view of the trapping material portion of Fig.
11 is a flowchart showing the software configuration of the control circuit in FIG.
The figure is a conceptual diagram of an example in which an electrode layer is directly formed on the trap material. 10.12... Electrode, 14... Electrode part, 16...
AC power supply, 18... impedance measurement section.

Claims

[Scope of utility model registration request]

゛ Particulate deposition amount detection in exhaust gas consisting of a pair of electrodes located at intervals in the exhaust gas flow, a constant voltage AC power source connected to the electrodes, and means for detecting impedance between the electrodes. sensor. ,