JPS57194332A - Detector for combustion time of internal combustion engine - Google Patents
Detector for combustion time of internal combustion engineInfo
- Publication number
- JPS57194332A JPS57194332A JP7971081A JP7971081A JPS57194332A JP S57194332 A JPS57194332 A JP S57194332A JP 7971081 A JP7971081 A JP 7971081A JP 7971081 A JP7971081 A JP 7971081A JP S57194332 A JPS57194332 A JP S57194332A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- time
- signal
- combustion
- cylinder
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/08—Testing internal-combustion engines by monitoring pressure in cylinders
Abstract
PURPOSE:To excellently obtain information on combustion time for control to the best ignition period by providing detecting circuit which outputs a trigger signal when the pressure in a cylinder is maximized, and regarding the period from an ignition period signal to be trigger signal as the combustion time. CONSTITUTION:When combustion pressure is applied to a pressure receiving plate 5, strain is generated and the pressure receiving plate 5 made of a ferromagnetic material varies in magnetic permeability, so magnetic flux phi passing an intermediate shaft 3 varies, inducing a voltage across a coil 2. This voltage is amplified by a differential operational amplifier 21 and inputted to an integrating capacitor 32. When a cylinder pressure signal is inverted, the output of a comparator 31 is inverted, and this point of time is regarded as the peak of the pressure in a cylinder. The rise of an ignition period signal sets a flip-flop 43 and the fall of the output signal of the comparator 31 resets it. Therefore, the output width of the flip-flop 43 corresponds to combustion time and clock pulses are counted and converted into time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7971081A JPS57194332A (en) | 1981-05-25 | 1981-05-25 | Detector for combustion time of internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7971081A JPS57194332A (en) | 1981-05-25 | 1981-05-25 | Detector for combustion time of internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57194332A true JPS57194332A (en) | 1982-11-29 |
Family
ID=13697756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7971081A Pending JPS57194332A (en) | 1981-05-25 | 1981-05-25 | Detector for combustion time of internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57194332A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016512863A (en) * | 2013-03-19 | 2016-05-09 | ダイムラー・アクチェンゲゼルシャフトＤａｉｍｌｅｒ ＡＧ | Method of operating internal combustion engine and internal combustion engine |
-
1981
- 1981-05-25 JP JP7971081A patent/JPS57194332A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016512863A (en) * | 2013-03-19 | 2016-05-09 | ダイムラー・アクチェンゲゼルシャフトＤａｉｍｌｅｒ ＡＧ | Method of operating internal combustion engine and internal combustion engine |
| US9797364B2 (en) | 2013-03-19 | 2017-10-24 | Daimler Ag | Method for operating an internal combustion engine and internal combustion engine |
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