IT1286159B1 - Diagnosis of leakage of internal combustion engine high-pressure injection system - generating pressure signal related to fuel pressure and comparing with reference pressure signal, and determining fuel leakage condition if pressure signal is less than reference signal - Google Patents
Diagnosis of leakage of internal combustion engine high-pressure injection system - generating pressure signal related to fuel pressure and comparing with reference pressure signal, and determining fuel leakage condition if pressure signal is less than reference signalInfo
- Publication number
- IT1286159B1 IT1286159B1 ITTO960585A IT1286159B1 IT 1286159 B1 IT1286159 B1 IT 1286159B1 IT TO960585 A ITTO960585 A IT TO960585A IT 1286159 B1 IT1286159 B1 IT 1286159B1
- Authority
- IT
- Italy
- Prior art keywords
- pressure
- signal
- pressure signal
- fuel
- leakage
- Prior art date
Links
- 239000000446 fuel Substances 0.000 title abstract 4
- 238000002347 injection Methods 0.000 title abstract 4
- 239000007924 injection Substances 0.000 title abstract 4
- 238000002485 combustion reaction Methods 0.000 title 1
- 238000003745 diagnosis Methods 0.000 title 1
- 238000000034 method Methods 0.000 abstract 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The method of diagnosing leakage in a high-pressure injection system of an IC engine having a number of cylinders (3) and a number of injectors (5) involves generating an operating signal (Sp: delta-Q) related to a physical quantity of the injection system. The operating signal is compared with a reference operating value )Po: delta-Qth1). A fuel leakage condition is determined in the event of a predetermined operating relationship between the operating signal and the reference operating value. The operating signal is a pressure signal related to a pressure of the fuel in the injection system and the reference operating value is a reference pressure value (Po).
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT96TO000585 IT1286159B1 (en) | 1996-07-09 | 1996-07-09 | Diagnosis of leakage of internal combustion engine high-pressure injection system - generating pressure signal related to fuel pressure and comparing with reference pressure signal, and determining fuel leakage condition if pressure signal is less than reference signal |
DE69711250T DE69711250T2 (en) | 1996-01-19 | 1997-01-16 | Method and unit for leak diagnosis of a high-pressure injection system of a fuel machine |
EP97100612A EP0785358B1 (en) | 1996-01-19 | 1997-01-16 | Method and unit for diagnosing leakage of an internal combustion engine high-pressure injection system |
ES97100612T ES2174137T3 (en) | 1996-01-19 | 1997-01-16 | METHOD AND LEAK DIAGNOSTIC UNIT OF A HIGH PRESSURE INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE. |
US08/786,438 US5773716A (en) | 1996-01-19 | 1997-01-21 | Method and unit for diagnosing leakage of an internal combustion engine high-pressure injection system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT96TO000585 IT1286159B1 (en) | 1996-07-09 | 1996-07-09 | Diagnosis of leakage of internal combustion engine high-pressure injection system - generating pressure signal related to fuel pressure and comparing with reference pressure signal, and determining fuel leakage condition if pressure signal is less than reference signal |
Publications (3)
Publication Number | Publication Date |
---|---|
ITTO960585A0 ITTO960585A0 (en) | 1996-07-09 |
ITTO960585A1 ITTO960585A1 (en) | 1998-01-09 |
IT1286159B1 true IT1286159B1 (en) | 1998-07-07 |
Family
ID=11414765
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT96TO000585 IT1286159B1 (en) | 1996-01-19 | 1996-07-09 | Diagnosis of leakage of internal combustion engine high-pressure injection system - generating pressure signal related to fuel pressure and comparing with reference pressure signal, and determining fuel leakage condition if pressure signal is less than reference signal |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1286159B1 (en) |
-
1996
- 1996-07-09 IT IT96TO000585 patent/IT1286159B1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
ITTO960585A0 (en) | 1996-07-09 |
ITTO960585A1 (en) | 1998-01-09 |
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