JPS5654317A - Detector for knocking vibration - Google Patents
Detector for knocking vibrationInfo
- Publication number
- JPS5654317A JPS5654317A JP13122479A JP13122479A JPS5654317A JP S5654317 A JPS5654317 A JP S5654317A JP 13122479 A JP13122479 A JP 13122479A JP 13122479 A JP13122479 A JP 13122479A JP S5654317 A JPS5654317 A JP S5654317A
- Authority
- JP
- Japan
- Prior art keywords
- knocking
- signal
- background noise
- amplification
- noise level
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To avoid influence of knocking vibration by holding a background noise level-signal at the same level as that right after knocking occurrence while the knocking is occurring.
CONSTITUTION: The output signal of the sensor that detects the knocking vibration of the engine is amplified by amplifier 2 and then rectified by rectifier 3. With analog switch 4 closed, this rectified signal is sent to and averaged by mean-value circuit 5 and then amplified by amplifier 6 to obtain a signal equivalent to a background noise level. This background noise level signal is compared with the output signal of sensor 1 after the amplification by comparator 7 to obtain a pulse string signal by conversion. When knocking occurs and the output of comparator 7 is held at a low level, analog switch 4 is opened to prevent an amplification part of amplification accompanying the knocking from being sent to mean-value circuit 5.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13122479A JPS5654317A (en) | 1979-10-11 | 1979-10-11 | Detector for knocking vibration |
US06/195,628 US4423621A (en) | 1979-10-11 | 1980-10-09 | Knocking detector |
GB8032578A GB2061380B (en) | 1979-10-11 | 1980-10-09 | Knocking detector for controlling ignition timing of an internal combustion engine |
DE3038352A DE3038352C2 (en) | 1979-10-11 | 1980-10-10 | Knock detector for an internal combustion engine |
FR8021745A FR2467396A1 (en) | 1979-10-11 | 1980-10-10 | CLICK SENSOR FOR AN INTERNAL COMBUSTION ENGINE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13122479A JPS5654317A (en) | 1979-10-11 | 1979-10-11 | Detector for knocking vibration |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5654317A true JPS5654317A (en) | 1981-05-14 |
Family
ID=15052926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13122479A Pending JPS5654317A (en) | 1979-10-11 | 1979-10-11 | Detector for knocking vibration |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5654317A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1981003049A1 (en) * | 1980-04-23 | 1981-10-29 | Mitsubishi Electric Corp | Ignition timing control apparatus for an internal combuston engine |
US10365446B2 (en) | 2017-11-06 | 2019-07-30 | Panasonic Intellectual Property Management Co., Ltd. | Optical module structure |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55156263A (en) * | 1979-05-25 | 1980-12-05 | Mitsubishi Electric Corp | Ignition timing controller for internal combustion engine |
-
1979
- 1979-10-11 JP JP13122479A patent/JPS5654317A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55156263A (en) * | 1979-05-25 | 1980-12-05 | Mitsubishi Electric Corp | Ignition timing controller for internal combustion engine |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1981003049A1 (en) * | 1980-04-23 | 1981-10-29 | Mitsubishi Electric Corp | Ignition timing control apparatus for an internal combuston engine |
EP0055298A1 (en) * | 1980-04-23 | 1982-07-07 | Mitsubishi Denki Kabushiki Kaisha | Ignition timing control apparatus for an internal combustion engine |
EP0055298B1 (en) * | 1980-04-23 | 1985-07-17 | Mitsubishi Denki Kabushiki Kaisha | Ignition timing control apparatus for an internal combustion engine |
US10365446B2 (en) | 2017-11-06 | 2019-07-30 | Panasonic Intellectual Property Management Co., Ltd. | Optical module structure |
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