KR101338600B1 - Apparatus and method for diagnosing fail of injector - Google Patents
Apparatus and method for diagnosing fail of injector Download PDFInfo
- Publication number
- KR101338600B1 KR101338600B1 KR1020070131421A KR20070131421A KR101338600B1 KR 101338600 B1 KR101338600 B1 KR 101338600B1 KR 1020070131421 A KR1020070131421 A KR 1020070131421A KR 20070131421 A KR20070131421 A KR 20070131421A KR 101338600 B1 KR101338600 B1 KR 101338600B1
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- South Korea
- Prior art keywords
- injector
- unit
- nozzle
- predetermined time
- abnormality
- Prior art date
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- 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
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- Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The present invention relates to an apparatus and method for detecting an abnormality of an injector, wherein the fuel of the injector unit is turned on or off from the sensing unit after turning on / off at least one nozzle for a predetermined time according to the injector abnormality detection signal. By receiving the pressure and displaying the abnormal information of the injector unit when the fuel pressure drop does not occur in the injector unit, it is possible to detect the abnormality of the injector without a separate information communication device, thereby improving the reliability of the engine. .
Injector
Description
The present invention relates to an apparatus and method for detecting injector abnormality.
In general, a Single Point Injection (SPI) Compressed Natural Gas (CNG) engine injects fuel using a fuel metering valve (FMV).
Here, the fuel valve is a device for adjusting the amount of natural gas (CNG) fuel entering the engine by the injector assembly (assy) made by mounting six to twelve injectors in one block according to the engine displacement.
In addition, when the fuel metering valve injector nozzle is clogged due to a foreign substance in the fuel, an injector cleaning mode, which is a mode for cleaning the injector, causes the electronic control unit to drive the injector at the time of the engine, thereby driving natural gas. The pressure of the fuel removes this material from the injector nozzle.
In addition, in order to check for clogging or failure of the injectors of the fuel metering valve, the engine RPM variation of the engine is measured by turning off the injectors one by one through the injector killing test. Check the injector for abnormalities.
However, in the related art, in order to check whether the injector nozzles are clogged or to execute the injector cleaning mode, a separate device such as an information communication terminal (eg, a notebook, a high scan, etc.) capable of communicating with the electronic controller is required.
In addition, in order to check which of the various injectors of the fuel metering valve is clogged or broken, it is troublesome to communicate with the electronic controller and perform an injector killing test.
The present invention relates to an injector abnormality detection apparatus and method for checking the abnormality of the injector without a separate information communication device.
The present invention includes the steps of receiving an injector abnormality detection signal, turning on / off at least one nozzle for a predetermined time by the injector abnormality detection signal, and according to the at least one nozzle is turned on / off Sensing the fuel pressure of the injector unit and displaying an abnormality of the injector unit when a drop does not occur in the fuel pressure of the injector unit.
The present invention can check whether there is an abnormality of the injector without a separate information communication device for communicating with the control unit and accordingly injector cleaning can be performed.
In addition, the present invention can perform the cleaning for the injector without a separate information communication device to improve the durability of the injector, it is possible to improve the reliability of the engine.
The present invention includes a keypad for applying an injector abnormality detection signal, at least one nozzle, an injector for turning on / off at least one nozzle for a predetermined time according to a control signal, and the control signal according to the present invention. A display unit for displaying an abnormality of the injector unit, an injector detecting unit for detecting fuel pressure of the injector unit according to at least one nozzle being turned on, and the at least one nozzle being turned on for a predetermined time according to the injector abnormality detection signal And a control unit configured to receive the fuel pressure of the injector unit from the detection unit after turning on / off and to apply an abnormal control signal of the injector unit to the display unit when a drop in the fuel pressure does not occur.
In the present invention, the control unit is configured to display at least a predetermined time interval through the display unit to correspond to at least one or more nozzles in which the fuel pressure drop of the injector unit does not occur as the nozzle is turned on / off, and then after another predetermined time. Displays at predetermined time intervals corresponding to the nozzles.
Further, in the present invention, the control unit applies the abnormal control signal of the injector to the display unit, performs cleaning on the nozzle of the injector unit, and also displays the injector cleaning mode through the display unit.
Further, in the present invention, the control unit receives the fuel pressure of the injector unit from the sensing unit after the on / off of the at least one nozzle for a predetermined time and the fuel injector to the display unit when the fuel pressure does not occur Apply a negative abnormal control signal.
Also, in the present invention, the control unit performs the cleaning signal of the injector unit of the keypad unit.
In the present invention, the predetermined time is 4 to 5 seconds, and after the predetermined time is 2 to 4 seconds.
In addition, the present invention comprises the steps of receiving an injector abnormality detection signal, the step of turning on or off at least one or more nozzles of the injector unit for a predetermined time by the injector abnormality detection signal, and the at least one nozzle on / off And detecting a fuel pressure of the injector unit, and displaying an abnormality of the injector unit when a drop does not occur in the fuel pressure of the injector unit.
In the displaying of the abnormality of the injector in the present invention, the nozzle is displayed at predetermined time intervals through the display unit so as to correspond to at least one or more nozzles in which the fuel pressure drop does not occur as the on / off of the injector. After that, the display is displayed at predetermined time intervals corresponding to other nozzles after a predetermined time.
The method may further include performing cleaning on the injector unit after displaying the abnormality in the injector unit.
In addition, after the step of performing the cleaning in the present invention, comprising the step of displaying the cleaning mode of the injector unit.
The method may further include displaying an abnormality of the injector unit when the at least one nozzle is turned on / off for a predetermined time and receives a fuel pressure of the injector unit from the sensing unit so that the drop of the fuel pressure does not occur. It further includes.
The cleaning of the injector unit is performed according to the cleaning signal of the injector unit.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.
Example
1 is a block diagram illustrating an apparatus for detecting an abnormality of an injector according to the present invention.
As shown in FIG. 1, the injector
First, the
Meanwhile, the
In addition, the
Here, the cleaning of the nozzles of the at least one
In addition, the
2 is a flowchart illustrating a method of detecting an injector abnormality according to the present invention.
As shown in FIG. 2, in the injector
Thus, when at least one nozzle of the
The start on / off
Here, the key on signal is a signal of a start On position (that is, an IG state) before the start of the vehicle is started.
At this time, the
Accordingly, the injector nozzles of the
Herein, the predetermined time is preferably 4 to 6 seconds.
In addition, when the
Thus, the
If there is no drop in fuel pressure as a result of the check in step S203, the
At this time, the
In detail, when the nozzle of the
In this state, when the
Thereafter, the
In addition, even when the
If there is a drop in fuel pressure as a result of the check in the above step (S203), the
The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.
1 is a block diagram showing an injector abnormality detection apparatus according to the present invention.
Figure 2 is a flow chart for explaining the injector abnormality detection method according to the present invention.
Description of the Related Art
100: Injector abnormality detection device 102: Key pad part
104: start on / off switch unit 106: display unit
107: injector detection unit 108: injector unit
110:
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070131421A KR101338600B1 (en) | 2007-12-14 | 2007-12-14 | Apparatus and method for diagnosing fail of injector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070131421A KR101338600B1 (en) | 2007-12-14 | 2007-12-14 | Apparatus and method for diagnosing fail of injector |
Publications (2)
Publication Number | Publication Date |
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KR20090063897A KR20090063897A (en) | 2009-06-18 |
KR101338600B1 true KR101338600B1 (en) | 2013-12-06 |
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KR1020070131421A KR101338600B1 (en) | 2007-12-14 | 2007-12-14 | Apparatus and method for diagnosing fail of injector |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20230064125A (en) * | 2021-11-03 | 2023-05-10 | 주식회사 현대케피코 | Apparatus and method for detecting opening time of injection nozzle of injector |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101051764B1 (en) * | 2009-11-26 | 2011-07-25 | 주식회사 케피코 | Diagnosis and diagnosis method of injector clogging of gasoline engine |
KR102552084B1 (en) | 2018-10-08 | 2023-07-06 | 현대자동차주식회사 | Method for Injector Injection Error Diagnosis using Diagnostic Inrush Condition and System Thereof |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR200423864Y1 (en) * | 2006-05-11 | 2006-08-11 | 신종활 | Injector tester |
KR100784306B1 (en) * | 2007-03-12 | 2007-12-13 | 남기성 | Injector testing device |
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2007
- 2007-12-14 KR KR1020070131421A patent/KR101338600B1/en not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR200423864Y1 (en) * | 2006-05-11 | 2006-08-11 | 신종활 | Injector tester |
KR100784306B1 (en) * | 2007-03-12 | 2007-12-13 | 남기성 | Injector testing device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20230064125A (en) * | 2021-11-03 | 2023-05-10 | 주식회사 현대케피코 | Apparatus and method for detecting opening time of injection nozzle of injector |
KR102541073B1 (en) | 2021-11-03 | 2023-06-08 | 주식회사 현대케피코 | Apparatus and method for detecting opening time of injection nozzle of injector |
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KR20090063897A (en) | 2009-06-18 |
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