JPS5720553A - Abnormality detecting process of fuel injection system - Google Patents
Abnormality detecting process of fuel injection systemInfo
- Publication number
- JPS5720553A JPS5720553A JP9442880A JP9442880A JPS5720553A JP S5720553 A JPS5720553 A JP S5720553A JP 9442880 A JP9442880 A JP 9442880A JP 9442880 A JP9442880 A JP 9442880A JP S5720553 A JPS5720553 A JP S5720553A
- Authority
- JP
- Japan
- Prior art keywords
- fuel injection
- injection valve
- wave form
- signal wave
- fuel
- 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
Abstract
PURPOSE: To enable detecting abnormality simply and reliably in such a way that a detector to detect vibration or sound is installed on the outside of any of a fuel pump, a high pressure pipe or a fuel injection valve.
CONSTITUTION: In the fuel injection system of a Diesel engine which are assembled by a fuel pump 1, a high pressure pipe 2, a fuel injection valve 3, etc., for example, a vibration detector (unshown in the figure) is installed on the head part of the fuel injection valve 3, the process is done by filtering proper frequency band and so on in order to seek process signal wave form (e) at the head part of the injection valve 3 to the needle lift signal wave form (b) of the fuel injection valve. Then, data of various operating conditions are analyzed, and opening and closing periods of the fuel injection valve 3 can be detected from ascent and descent C, D of the process signal wave form (e). Besides, if the pattern of the detecting signal (e) in case of normal operation is compared with the detecting signal (e)' in case where for example, opening valve pressure of the injection valve 3 has been decreased, one can easily detect the abnormality.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9442880A JPS5720553A (en) | 1980-07-09 | 1980-07-09 | Abnormality detecting process of fuel injection system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9442880A JPS5720553A (en) | 1980-07-09 | 1980-07-09 | Abnormality detecting process of fuel injection system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5720553A true JPS5720553A (en) | 1982-02-03 |
Family
ID=14109953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9442880A Pending JPS5720553A (en) | 1980-07-09 | 1980-07-09 | Abnormality detecting process of fuel injection system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5720553A (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6252897U (en) * | 1985-09-24 | 1987-04-02 | ||
JPS62153564A (en) * | 1985-12-26 | 1987-07-08 | Nippon Denso Co Ltd | Device for detecting abnormality in engine |
JPS643077U (en) * | 1987-06-24 | 1989-01-10 | ||
JPH03279454A (en) * | 1990-03-23 | 1991-12-10 | Nippon Insarutetsuku:Kk | Heat-insulating sound-absorbing material |
EP0644323A1 (en) * | 1993-09-17 | 1995-03-22 | Siemens Aktiengesellschaft | Device for detecting an operation condition of an injection pump |
US5426971A (en) * | 1994-03-03 | 1995-06-27 | Ford Motor Company | On-board detection of fuel line vapor |
US5535621A (en) * | 1994-03-02 | 1996-07-16 | Ford Motor Company | On-board detection of fuel injector malfunction |
WO1997012136A1 (en) * | 1995-09-28 | 1997-04-03 | Robert Bosch Gmbh | Process and device for monitoring a fuel metering system |
EP0785349A2 (en) * | 1996-01-19 | 1997-07-23 | C.R.F. Società Consortile per Azioni | Method and unit for diagnosing malfunctioning of the injectors of an internal combustion engine high-pressure injection system |
WO2001023731A1 (en) * | 1999-09-30 | 2001-04-05 | Siemens Automotive Corporation | Integral engine control sensor |
KR100413304B1 (en) * | 1995-09-28 | 2004-05-06 | 로베르트 보쉬 게엠베하 | Monitoring method and monitoring device of fuel supply device |
CN104373273A (en) * | 2014-10-11 | 2015-02-25 | 唐山学院 | Mass type intelligent oil-gauging device for fuel injection pump testbed |
GB2568089A (en) * | 2017-11-06 | 2019-05-08 | Delphi Tech Ip Ltd | Fuel pump with accelerometer |
GB2582605A (en) * | 2019-03-27 | 2020-09-30 | Delphi Tech Ip Ltd | Method of detecting a leak in a fuel injector |
-
1980
- 1980-07-09 JP JP9442880A patent/JPS5720553A/en active Pending
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6252897U (en) * | 1985-09-24 | 1987-04-02 | ||
JPS62153564A (en) * | 1985-12-26 | 1987-07-08 | Nippon Denso Co Ltd | Device for detecting abnormality in engine |
JPS643077U (en) * | 1987-06-24 | 1989-01-10 | ||
JPH03279454A (en) * | 1990-03-23 | 1991-12-10 | Nippon Insarutetsuku:Kk | Heat-insulating sound-absorbing material |
EP0644323A1 (en) * | 1993-09-17 | 1995-03-22 | Siemens Aktiengesellschaft | Device for detecting an operation condition of an injection pump |
US5533477A (en) * | 1993-09-17 | 1996-07-09 | Siemens Aktiengesellschaft | Apparatus for ascertaining an operating state of an injection pump |
US5535621A (en) * | 1994-03-02 | 1996-07-16 | Ford Motor Company | On-board detection of fuel injector malfunction |
US5426971A (en) * | 1994-03-03 | 1995-06-27 | Ford Motor Company | On-board detection of fuel line vapor |
WO1997012136A1 (en) * | 1995-09-28 | 1997-04-03 | Robert Bosch Gmbh | Process and device for monitoring a fuel metering system |
US5945596A (en) * | 1995-09-28 | 1999-08-31 | Robert Bosch Gmbh | Method and device for monitoring a fuel-metering system |
KR100413304B1 (en) * | 1995-09-28 | 2004-05-06 | 로베르트 보쉬 게엠베하 | Monitoring method and monitoring device of fuel supply device |
DE19548279B4 (en) * | 1995-09-28 | 2006-12-14 | Robert Bosch Gmbh | Method and device for monitoring a fuel metering system |
EP0785349A2 (en) * | 1996-01-19 | 1997-07-23 | C.R.F. Società Consortile per Azioni | Method and unit for diagnosing malfunctioning of the injectors of an internal combustion engine high-pressure injection system |
EP0785349A3 (en) * | 1996-01-19 | 1997-12-17 | C.R.F. Società Consortile per Azioni | Method and unit for diagnosing malfunctioning of the injectors of an internal combustion engine high-pressure injection system |
WO2001023731A1 (en) * | 1999-09-30 | 2001-04-05 | Siemens Automotive Corporation | Integral engine control sensor |
US6494186B1 (en) | 1999-09-30 | 2002-12-17 | Siemens Vdo Automotive Corporation | Integral engine control sensor |
CN104373273A (en) * | 2014-10-11 | 2015-02-25 | 唐山学院 | Mass type intelligent oil-gauging device for fuel injection pump testbed |
GB2568089A (en) * | 2017-11-06 | 2019-05-08 | Delphi Tech Ip Ltd | Fuel pump with accelerometer |
GB2582605A (en) * | 2019-03-27 | 2020-09-30 | Delphi Tech Ip Ltd | Method of detecting a leak in a fuel injector |
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