JPS56637A - Knocking detecting unit for internal combustion engine - Google Patents
Knocking detecting unit for internal combustion engineInfo
- Publication number
- JPS56637A JPS56637A JP7600979A JP7600979A JPS56637A JP S56637 A JPS56637 A JP S56637A JP 7600979 A JP7600979 A JP 7600979A JP 7600979 A JP7600979 A JP 7600979A JP S56637 A JPS56637 A JP S56637A
- Authority
- JP
- Japan
- Prior art keywords
- knocking
- circuit
- filter
- operating circuit
- lead angle
- 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
- Measuring Fluid Pressure (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Testing Of Engines (AREA)
Abstract
PURPOSE: To make it possible to detect weak knocking, by providing plural filters to detect knocking and by detecting the level of a vibration noise itself and by switching filters so that the characteristic may match to the filter region.
CONSTITUTION: The reference angle position of the crankshaft of an engine is detected by angle position detector 1 and is shaped in 2. The base lead angle set previously is operated according to the state of the engine by base lead angle operating circuit 3, and an ignition time is determined in ignition lead angle operating circuit 4 on the basis of the output of operating circuit 3 and the output of correction lead angle operating circuit 5. The output signal of operating circuit 4 is supplied or cut off to the ignition coil by known igniter 6. Though the knocking phenomenon of the engine is detected by knocking detector 7, the characteristic of plural frequency bands is given to filter circuit 8 where this signal is input, and knocking is decided by knocking detecting circuit 9. At this time, the filter characteristic of filter circuit 8 is switched by filter control circuit 11.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7600979A JPS56637A (en) | 1979-06-15 | 1979-06-15 | Knocking detecting unit for internal combustion engine |
| US06/135,929 US4345558A (en) | 1979-04-28 | 1980-03-31 | Knock detecting apparatus for an internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7600979A JPS56637A (en) | 1979-06-15 | 1979-06-15 | Knocking detecting unit for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56637A true JPS56637A (en) | 1981-01-07 |
Family
ID=13592809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7600979A Pending JPS56637A (en) | 1979-04-28 | 1979-06-15 | Knocking detecting unit for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56637A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57159124U (en) * | 1981-03-31 | 1982-10-06 | ||
| JPS5974378A (en) * | 1982-10-19 | 1984-04-26 | Tokuda Seisakusho Ltd | Evacuator |
| US4595423A (en) * | 1983-09-09 | 1986-06-17 | Nippon Telegraph & Telephone Public Corporation | Method of homogenizing a compound semiconductor crystal prior to implantation |
| JPH03105082A (en) * | 1989-09-19 | 1991-05-01 | Science & Tech Agency | Bakable cryopump |
| JP2007241583A (en) * | 2006-03-08 | 2007-09-20 | Hitachi Ltd | Mechanical quantity measuring apparatus and method |
| US7614289B2 (en) | 2007-04-17 | 2009-11-10 | Mitsubishi Electric Corporation | Control apparatus for an internal combustion engine which detects knocking of the engine |
| JP2017067642A (en) * | 2015-09-30 | 2017-04-06 | 横河電機株式会社 | Field apparatus |
| JP2017160809A (en) * | 2016-03-08 | 2017-09-14 | 日立オートモティブシステムズ株式会社 | Engine control system |
| JPWO2020045026A1 (en) * | 2018-08-30 | 2021-08-10 | 日立Astemo株式会社 | Signal processing device and engine control device |
-
1979
- 1979-06-15 JP JP7600979A patent/JPS56637A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57159124U (en) * | 1981-03-31 | 1982-10-06 | ||
| JPS5974378A (en) * | 1982-10-19 | 1984-04-26 | Tokuda Seisakusho Ltd | Evacuator |
| US4595423A (en) * | 1983-09-09 | 1986-06-17 | Nippon Telegraph & Telephone Public Corporation | Method of homogenizing a compound semiconductor crystal prior to implantation |
| JPH03105082A (en) * | 1989-09-19 | 1991-05-01 | Science & Tech Agency | Bakable cryopump |
| JP2007241583A (en) * | 2006-03-08 | 2007-09-20 | Hitachi Ltd | Mechanical quantity measuring apparatus and method |
| US7614289B2 (en) | 2007-04-17 | 2009-11-10 | Mitsubishi Electric Corporation | Control apparatus for an internal combustion engine which detects knocking of the engine |
| JP2017067642A (en) * | 2015-09-30 | 2017-04-06 | 横河電機株式会社 | Field apparatus |
| JP2017160809A (en) * | 2016-03-08 | 2017-09-14 | 日立オートモティブシステムズ株式会社 | Engine control system |
| JPWO2020045026A1 (en) * | 2018-08-30 | 2021-08-10 | 日立Astemo株式会社 | Signal processing device and engine control device |
| US11261811B2 (en) | 2018-08-30 | 2022-03-01 | Hitachi Astemo, Ltd. | Signal processing device, and engine control device |
| US11635036B2 (en) | 2018-08-30 | 2023-04-25 | Hitachi Astemo, Ltd. | Signal processing device, and engine control device |
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