JPS5631616A - Knocking detector for internal combustion engine - Google Patents
Knocking detector for internal combustion engineInfo
- Publication number
- JPS5631616A JPS5631616A JP10750079A JP10750079A JPS5631616A JP S5631616 A JPS5631616 A JP S5631616A JP 10750079 A JP10750079 A JP 10750079A JP 10750079 A JP10750079 A JP 10750079A JP S5631616 A JPS5631616 A JP S5631616A
- Authority
- JP
- Japan
- Prior art keywords
- oscillator
- knocking
- housing
- oscillation
- magnetic path
- 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
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
PURPOSE: To obtain the detector stable with high sensitivity, by containing the center magnetic path forming gap between the oscillator and itself, magnetic flux detection means and the oscillator in the cylindrical housing, and fixing the end of oscillator to the housing.
CONSTITUTION: The knocking oscillation caused to the cylinder block 1 is delivered to the oscillator 21 via the housing 27 of the detector 2. Since both ends of the oscillation chip 21a of the oscillator 21 are fixed to the housing 27, the chip 21a oscillates in the magnetic path, the magnetic resistance in the magnetic path changes with the change of the gap G, and the voltage output corresponding to the magnetic flux change is output in the coil 25. This signal is output to the detection circuit 3 via the terminal 28b from the one end 25c of the coil 25. Since the resonance point of the oscillation tip 25a is in matching with the knocking frequency, the knocking detection sensitivity is especially higher at this frequency and the signal sensitivity in other frequency band is relatively fallen, allowing to increase the S/N ratio of knocking detection.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10750079A JPS5631616A (en) | 1979-08-23 | 1979-08-23 | Knocking detector for internal combustion engine |
US06/178,282 US4366702A (en) | 1979-08-23 | 1980-08-15 | Knock detecting apparatus for internal combustion engines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10750079A JPS5631616A (en) | 1979-08-23 | 1979-08-23 | Knocking detector for internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5631616A true JPS5631616A (en) | 1981-03-31 |
Family
ID=14460776
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10750079A Pending JPS5631616A (en) | 1979-08-23 | 1979-08-23 | Knocking detector for internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5631616A (en) |
-
1979
- 1979-08-23 JP JP10750079A patent/JPS5631616A/en active Pending
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