JPS6035238U

JPS6035238U - Combustion monitoring sensor

Info

Publication number: JPS6035238U
Application number: JP12732683U
Authority: JP
Inventors: 沢本　国章
Original assignee: 日産自動車株式会社
Priority date: 1983-08-19
Filing date: 1983-08-19
Publication date: 1985-03-11

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、従来のシリンダ内圧検出用の座金型センサの
上面図、第２図は、第１図の■−■線に沿う断面図、第
３区は、第１図および第２図に示した座金型センサの取
付状態を示す断面図である。第４図は、この考案の第１
実施例を示す断面図、第５図は、第４図の■−■線に沿
う断面図、第６図は、第４図のヒータ抵抗に流す電流の
制御回路の一例を示すブロック図、第７図は、機関吸入
負圧と機関回転数とをパラメータとしたヒータ抵抗に流
す電流の等電流曲線図、第８図は、この考案の第２実施
例を示す断面図である。１．１０・・・座金型センサ、２．１８・・・プラス側
電極板、４，１９・・・マイナス側電極板、５・・・リ
ード線、７・・・シリンダヘッド、８・・・燃焼室、１
１゜２４・・・ヒータ抵抗、１２・・・リード線、１３
・・・負圧センサ、１４・・・回転速度センサ、１５・
・・通電制御回路、１６・・・ノッキングセンサ、２２
・・・シリンダブロック。Figure 1 is a top view of a conventional washer-type sensor for detecting cylinder internal pressure, Figure 2 is a sectional view taken along the line ■-■ in Figure 1, and the third section is the same as in Figures 1 and 2. FIG. 3 is a cross-sectional view showing the mounted state of the washer type sensor shown in FIG. Figure 4 shows the first part of this idea.
5 is a sectional view showing the embodiment, and FIG. 5 is a sectional view taken along the line ■-■ in FIG. 4. FIG. FIG. 7 is an isocurrent curve diagram of the current flowing through the heater resistor with engine suction negative pressure and engine speed as parameters, and FIG. 8 is a sectional view showing a second embodiment of this invention. 1.10... Washer type sensor, 2.18... Plus side electrode plate, 4, 19... Minus side electrode plate, 5... Lead wire, 7... Cylinder head, 8... Combustion chamber, 1
1゜24... Heater resistance, 12... Lead wire, 13
... Negative pressure sensor, 14... Rotation speed sensor, 15.
...Electrification control circuit, 16...Knocking sensor, 22
···Cylinder block.

Claims

[Scope of utility model registration request]

A combustion monitoring sensor using a piezoelectric element that is attached to the cylinder head, cylinder block, intake manifold, etc. of an engine and detects engine cylinder internal pressure and knocking is provided with temperature control means to keep the temperature of the sensor constant. A combustion monitoring sensor featuring: