JPS55112541A - Jet pressure detection unit - Google Patents

Jet pressure detection unit

Info

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
Application number
JP2030779A
Other languages
Japanese (ja)
Other versions
JPS6157468B2 (en
Inventor
Toshio Hashimoto
Takaaki Ikeda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP2030779A priority Critical patent/JPS55112541A/en
Publication of JPS55112541A publication Critical patent/JPS55112541A/en
Publication of JPS6157468B2 publication Critical patent/JPS6157468B2/ja
Granted legal-status Critical Current

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
JP2030779A 1979-02-22 1979-02-22 Jet pressure detection unit Granted JPS55112541A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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