JPS5836326U

JPS5836326U - Knocking detector for internal combustion engine

Info

Publication number: JPS5836326U
Application number: JP13115681U
Authority: JP
Inventors: 正服部; 眞尾崎; 和彦三浦; 義則大塚
Original assignee: 株式会社日本自動車部品総合研究所
Priority date: 1981-09-02
Filing date: 1981-09-02
Publication date: 1983-03-09
Also published as: JPS6333138Y2

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図は本考案になるノッキング検出器を適用するノッ
クフイードバ：ンク点火システムの構成模式図、第２図
、第３図は本考案になるノッキング検出器の第１゜第２
の実施例の構成を示す縦断面図、第４図ａは本考案検出
器の第３実施例の構成を示す縦断面図、第４図すは第４
図ａ図示のＩＶ−■線に沿う横断面図、第５図ａは本考
案検出器の第４実施例の構成を示す縦断面図、第５図す
は第５図ａ図示の■−■線に沿う横断面図で、図中同一
符号は同−又は均等部分を示す。１・・・・・・４気筒列型内燃機関、２・・・・・・ノ
ッキング検出器、２２・・・・・・振動体、２９・・・
・・・防振部材、２１０・・・・・・プリント基板、２
１１・・・・・・半導体よりなる増幅回路又はインピー
ダンス変換回路、２１・・・・・・ハウジング、２１３
・・・・・・コネクタ、３０゜４０．５０・・・・・・
圧電素子、５３・・・・・・重錘、４１゜５１・・・・
・・電極。Fig. 1 is a schematic diagram of the configuration of a knock feedback ignition system to which the knocking detector of the present invention is applied, and Figs. 2 and 3 show the first and second stages of the knocking detector of the present invention.
FIG. 4a is a vertical cross-sectional view showing the configuration of a third embodiment of the detector of the present invention; FIG.
Figure 5a is a cross-sectional view taken along line IV-■ shown in Figure 5, Figure 5a is a longitudinal sectional view showing the configuration of the fourth embodiment of the detector of the present invention, and Figure 5 is a cross-sectional view taken along line IV-■ shown in Figure 5a. In the cross-sectional view taken along the line, the same reference numerals indicate the same or equivalent parts. DESCRIPTION OF SYMBOLS 1...Four-cylinder in-line internal combustion engine, 2...Knocking detector, 22...Vibrating body, 29...
... Vibration isolation member, 210 ... Printed circuit board, 2
11...Amplification circuit or impedance conversion circuit made of semiconductor, 21...Housing, 213
・・・・・・Connector, 30°40.50・・・・・・
Piezoelectric element, 53... Weight, 41° 51...
··electrode.

Claims

[Scope of utility model registration request]

(1) A vibration-to-electrical conversion unit that generates an electrical signal corresponding to the vibration intensity of knocking occurring in an internal combustion engine, and a circuit unit that amplifies or converts the impedance of the electrical signal, and a vibration isolation structure is added to the circuit unit. A knocking detector for internal combustion engines featuring:

(2) The vibration-to-electrical conversion section is characterized by comprising a vibrating body that vibrates in response to the vibration of knocking, and a magnetic flux detection means that detects magnetic flux that changes due to the vibration of the vibrating body and generates an electrical output. A knocking detector for an internal combustion engine according to claim 1 of the utility model registration claim.

(3) The vibration-to-electrical converter is constructed of a vibrating body that vibrates in response to knocking vibrations and a piezoelectric element fixed to the vibrating body, as set forth in claim 1 of the utility model registration claim. Knocking detector for internal combustion engines.

(4) The knocking detector for an internal combustion engine according to claim 1, wherein the vibrating body of the vibration-electrical converter is constituted by a piezoelectric element that vibrates in response to knocking vibrations.

(5) The vibration-electricity converter includes a piezoelectric element and a weight that converts vibration acceleration into force and acts on the piezoelectric element, as described in claim 1 of the utility model registration claim. knocking detector for internal combustion engines.