JPS55112541A - Jet pressure detection unit - Google Patents
Jet pressure detection unitInfo
- Publication number
- JPS55112541A JPS55112541A JP2030779A JP2030779A JPS55112541A JP S55112541 A JPS55112541 A JP S55112541A JP 2030779 A JP2030779 A JP 2030779A JP 2030779 A JP2030779 A JP 2030779A JP S55112541 A JPS55112541 A JP S55112541A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- jet
- pulse
- jet pressure
- 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.)
- Granted
Links
Landscapes
- Combined Controls Of Internal Combustion Engines (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
PURPOSE: To make it possible to generate high-precision jet pulses even in combustion rotation of the engine, by providing a filter circuit, a reference level set circuit, a differential shaping circuit, a signal selection circuit and a pulse shaping output circuit.
CONSTITUTION: Jet pressure signal S0 obtained from sensors of a jet pressure detector, etc., is caused to pass through filter circuit 1, and signal S2 is obtained by subjecting signal S1, which has DC components and low-frequency components cut, to full-wave rectification in reference level set circuit 2. Further, jet pressure signal S3 is extracted from signals S1 and S2 by signal selection circuit 3. Since the jet pressure signal becomes maximum at a jet nozzle opening time, signal S4, which is obtained by differentiating signal S1 by a differentiating circuit, and signal S3 are caused to pass through AND gate G1 of pulse shaping output circuit 5, and a fixed- width pulse signal is outputted by one-short multivibrator M1. As a result, two or more erroneous jet pulse signals can be prevented from being generated, and a jet pulse signal matched to the jet nozzle opening time can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2030779A JPS55112541A (en) | 1979-02-22 | 1979-02-22 | Jet pressure detection unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2030779A JPS55112541A (en) | 1979-02-22 | 1979-02-22 | Jet pressure detection unit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55112541A true JPS55112541A (en) | 1980-08-30 |
JPS6157468B2 JPS6157468B2 (en) | 1986-12-06 |
Family
ID=12023479
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2030779A Granted JPS55112541A (en) | 1979-02-22 | 1979-02-22 | Jet pressure detection unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55112541A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57108425A (en) * | 1980-12-26 | 1982-07-06 | Hino Motors Ltd | Detecting method of fuel injection timing in diesel engine |
JPS58144662A (en) * | 1982-02-01 | 1983-08-29 | レスリ−・ハ−トリツジ・リミテツド | Method and apparatus for inspecting phase of multiline fuel jet pump |
JP2006214441A (en) * | 2005-02-05 | 2006-08-17 | L'orange Gmbh | Method and device for detecting injection process of fuel injector of internal combustion engine with using vibration sensor |
-
1979
- 1979-02-22 JP JP2030779A patent/JPS55112541A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57108425A (en) * | 1980-12-26 | 1982-07-06 | Hino Motors Ltd | Detecting method of fuel injection timing in diesel engine |
JPS58144662A (en) * | 1982-02-01 | 1983-08-29 | レスリ−・ハ−トリツジ・リミテツド | Method and apparatus for inspecting phase of multiline fuel jet pump |
JP2006214441A (en) * | 2005-02-05 | 2006-08-17 | L'orange Gmbh | Method and device for detecting injection process of fuel injector of internal combustion engine with using vibration sensor |
Also Published As
Publication number | Publication date |
---|---|
JPS6157468B2 (en) | 1986-12-06 |
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