AU2006201765B2 - Method and System for Controlling Leakage Cut-off Valve - Google Patents

Method and System for Controlling Leakage Cut-off Valve Download PDF

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Publication number
AU2006201765B2
AU2006201765B2 AU2006201765A AU2006201765A AU2006201765B2 AU 2006201765 B2 AU2006201765 B2 AU 2006201765B2 AU 2006201765 A AU2006201765 A AU 2006201765A AU 2006201765 A AU2006201765 A AU 2006201765A AU 2006201765 B2 AU2006201765 B2 AU 2006201765B2
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AU
Australia
Prior art keywords
valve
leakage cut
case
leakage
cut
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.)
Ceased
Application number
AU2006201765A
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AU2006201765A1 (en
Inventor
Woo Jik Lee
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.)
Hyundai Motor Co
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Hyundai Motor Co
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Filing date
Publication date
Priority claimed from KR1020050112489A external-priority patent/KR100717317B1/en
Application filed by Hyundai Motor Co filed Critical Hyundai Motor Co
Publication of AU2006201765A1 publication Critical patent/AU2006201765A1/en
Application granted granted Critical
Publication of AU2006201765B2 publication Critical patent/AU2006201765B2/en
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F02M21/0257—Details of the valve closing elements, e.g. valve seats, stems or arrangement of flow passages
    • F02M21/026—Lift valves, i.e. stem operated valves
    • F02M21/0263—Inwardly opening single or multi nozzle valves, e.g. needle valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
    • F02D19/021—Control of components of the fuel supply system
    • F02D19/023—Control of components of the fuel supply system to adjust the fuel mass or volume flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • F02D41/3836—Controlling the fuel pressure
    • F02D41/3863—Controlling the fuel pressure by controlling the flow out of the common rail, e.g. using pressure relief valves
    • F02D41/3872—Controlling the fuel pressure by controlling the flow out of the common rail, e.g. using pressure relief valves characterised by leakage flow in injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
    • F02M21/0242—Shut-off valves; Check valves; Safety valves; Pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F02M21/0251—Details of actuators therefor
    • F02M21/0254—Electric actuators, e.g. solenoid or piezoelectric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0293—Safety devices; Fail-safe measures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • 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
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Analytical Chemistry (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Pipeline Systems (AREA)
  • Examining Or Testing Airtightness (AREA)

Description

AUSTRALIA
Patents Act 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT
ORIGINAL
Name of Applicant: Actual Inventor: Hyundai Motor Company Woo Jik Lee Address for Service: Invention Title: Details of Basic Applications: HODGKINSON McINNES PAPPAS Patent Trade Mark Attorneys Levels 3, 20 Alfred Street MILSONS POINT NSW 2061 "Method and System for Controlling Leakage Cut-off Valve" Korea Patent Application No. 10-2005-0074490 Filed 12 August 2005 Korea Patent Application No. 10-2005-0112489 Filed 23 November 2005 The following statement is a full description of this invention, including the best method of performing it known to us: P20485AU00 METHOD AND SYSTEM FOR CONTROLLING LEAKAGE CUT-OFF VALVE CROSS-REFERENCE TO RELATED APPLICATION This application claims priority to and the benefit of Korean Patent Applications No. 10-2005-0074490 and 10-2005-0112489 filed in the Korean Intellectual Property Office on August 12, 2005 and November 23, 2005, the entire contents of which are incorporated herein by reference.
BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a method for controlling a leakage cut-off valve and a system thereof. More particularly, the present invention relates to a method for controlling a leakage cut-off valve mounted to an injector utilizing a voltage difference of a battery and a system for performing the method.
Description of the Related Art Generally, a liquified petroleum gas injection (LPI) engine uses a liquefied petroleum gas as fuel.
A saturated vapor pressure of an LPG fuel tends to increase along a straight line if a temperature of the LPG increases.
Therefore, after an engine stopping, the LPG fuel increases the temperature and of the pressure thereof and in a case that a leakage occurs in the engine, the LPG flows to the engine through the injector.
And then, when the engine re-starts, because of mixing of a fuel remained in the injector, a fuel leaked therefrom and a normal fuel transmitted from the fuel tank, a fuel amount increases.
In this case, because of the increase of the fuel, a density (combustion ratio) of a mixture gas mixed with an intake air inhaled to the engine and the fuel increases.
Therefore, a malfunction occurs to the engine ignition and a problem occurs that air pollution substance increases by an increase of a Non Methane Hydrocarbon (NMHC).
According to a prior art, in order to solve the above described problem, a method is suggested that a leakage cut-off solenoid valve is mounted to the injector for preventing the leakage of the fuel to the engine.
According to the method described above, the leakage cut-off solenoid valve is opened after a predetermined period after the engine is ignited.
In this case, a problem can occur in startability because the engine igniting time is changed with each driver's intention and another problem occurs that the NMHC exhaust is increased by a fuel remained between the injector and the leakage cut-off solenoid valve.
In conclusion, the ideal method is that the leakage cut-off solenoid valve is synchronizedly opened when the engine starts just before the fuel injection but in order to realize the ideal method, a problem occurs that the engine, a scheme of an ECU, and a self-diagnosing apparatus become complicated.
The above information disclosed in this Background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
SUMMARY OF THE INVENTION The present invention has been made in an effort to provide a method and a system for controlling a leakage cut-off valve having advantages of cutting off leakage of LPG fuel, a stable startability of an engine, and a simple scheme of the leakage cut-off valve system.
An exemplary method for controlling a leakage cut-off valve according to an embodiment of the present invention includes determining whether an ignition key is turned on, monitoring a battery voltage in a case that the ignition key is turned on, and opening the leakage cut-off valve in a case that the measured battery voltage difference is higher than or equal to a predetermined value.
The method further includes simultaneously operating a timer at a time of opening the leakage cut-off valve. The method further includes closing the leakage cut-off valve in a case that the measured battery voltage difference is lower than the predetermined value. The method further includes determining whether an engine has been started after the opening of the leakage cut-off valve, maintaining the leakage cut-off valve open in a case that the engine has been started, determining whether the engine stops during maintaining the leakage cut-off valve open, closing the leakage cut-off valve in a case that the engine stops during maintaining the leakage cut-off valve open, and maintaining the leakage cut-off valve open in a case that the engine does not stop during maintaining the leakage cut-off valve open. The method further includes measuring a period while the leakage cut-off valve is opened by the timer in a case that the engine has not been started, determining whether the measured period is over a predetermined period, and closing the leakage cut-off valve in a case that the measured period is over the predetermined period.
An exemplary system for controlling a leakage cut-off valve according to an embodiment of the present invention includes an injector supplying a fuel, a leakage cut-off valve connected to the injector to be able to cut-off fuel leakage from the injector, and an electronic control unit (ECU) controlling the leakage cut-off valve, wherein the ECU is programmed to perform functions of determining whether an ignition key is turned on, monitoring a battery voltage in a case that the ignition key is turned on, and opening the leakage cut-off valve in a case that the measured battery voltage difference is higher than or equal to a predetermined value. The ECU may be programmed to further perform simultaneously operating a timer at a time of opening the leakage cut-off valve.
The ECU may be programmed to further perform closing not opening the leakage cut-off valve in a case that the measured battery voltage difference is lower than the predetermined value. The ECU may be programmed to further perform determining whether an engine has been started after the opening of the leakage cut-off valve, maintaining the leakage cut-off valve open in a case that the engine has been started, determining whether the engine stops during maintaining the leakage cut-off valve open, closing the leakage cut-off valve in a case that the engine stops during maintaining the leakage cut-off valve open, and maintaining the leakage cut-off valve open in a case that the engine does not stops during maintaining the leakage cut-off valve open. The ECU may be programmed to further perform measuring a period while the leakage cut-off valve is opened by the timer in a case that the engine has not been started, determining whether the measured period is over a predetermined period, and closing the leakage cut-off valve in a case that the measured period is over the predetermined period.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a leakage cut-off valve system according to an exemplary embodiment of the present invention.
FIG. 2 shows a leakage cut-off valve according to an exemplary embodiment of the present invention.
FIG. 3 shows a method for controlling a leakage cut-off valve according to an exemplary embodiment of the present invention.
DETAILED DESCRIPTION OF THE EMBODIMENTS Exemplary embodiments of the present invention will hereinafter be described in detail with reference to the accompanying drawings.
FIG. 1 shows a leakage cut-off valve system according to an exemplary embodiment of the present invention.
As shown in FIG. 1, according to an exemplary embodiment of the present invention, the leakage cut-off valve system includes an injector 101, a leakage cut-off valve 103, and an electronic control unit (ECU) 105.
The injector 101 supplies a fuel to an intake manifold 107 and the leakage cut-off valve 103 is connected to the injector 101 such that the injector 101 can cut off the fuel flown through the injector 101.
The ECU 105 may be realized by at least one microprocessor activated by a predetermined program and the predetermined program can be programmed to include a set of instructions to perform steps in a method for controlling the leakage cut-off valve according to an exemplary embodiment of the present invention.
In addition, the ECU 105 monitors a voltage of a battery 109 and a position of an ignition key 111, and also controls a timer 113.
If the ignition key 111 is turned on, the timer 113 measures a time period from a point at which the ignition key 111 is turned on.
FIG. 2 shows a leakage cut-off valve according to an exemplary embodiment of the present invention.
As shown in FIGs. 1 and 2, the leakage cut-off valve 103 is connected under the injector 101 and is formed to cut off the fuel supplied to the intake manifold 107.
The fuel is supplied to the injector 101 (referring to a solid line arrow in FIG. 2) and is flown/cut off to the intake manifold 107 by the leakage cut-off valve 103 (referring to a dotted line arrow in FIG. 2).
If the ECU 105 operates a coil 201 of the leakage cut-off valve 103, the leakage cut-off valve 103 supplies the fuel by lifting a plunger 203.
In addition, if a current is cut off from the coil 201, the fuel supply is cut off by the plunger 203 going down due to a return spring 205.
A leakage cut-off valve 103 is obvious to a person of an ordinary skill in the art thus a detailed description is omitted herein.
FIG. 3 shows a method for controlling a leakage cut-off valve according to an exemplary embodiment of the present invention.
Referring to FIG. 3, according to an exemplary embodiment of the present invention, a method for controlling a leakage cut-off valve is described hereinafter.
According to an exemplary embodiment of the present invention, an ECU 105 of a leakage cut-off valve control system determines whether the ignition key 111 is turned on at step S301.
At that time, the leakage cut-off valve 103 is closed for cutting off leakage of the fuel.
And then, the ECU 105 monitors a voltage of a battery 109 at step S303 in a case that the ignition key 111 is turned on.
The ECU 105 does not open the leakage cut-off valve 103 at step S304 if the ECU 105 determines that the ignition key 111 is not turned on.
After the ECU 105 monitors the voltage of the battery 109, the ECU 105 determines whether a difference between the measured voltage and the voltage measured just before of the battery 109 is higher than the predetermined value at step S305.
In a case that the ECU 105 determines that the voltage difference of the battery 109 is higher than the predetermined value, the ECU 105 opens the leakage cut-off valve 103 at step S307.
In a case that an engine of a vehicle is started, because the voltage of the battery 109 is momentarily dropped, the ECU 105 determines that the engine is started in a case that the measured voltage is lower than the predetermined value and opens the leakage cut-off valve 103 at step S307.
At the step S305, if the ECU 105 determines that the voltage difference of the battery 109 is lower than the predetermined value, the ECU 105 returns to the step S301.
The ECU 105 simultaneously operates, at step S307, the timer 113 with the opening of the leakage cut-off valve 103. The timer 113 measures a time while the leakage cut-off valve is opening after the ignition key 111 is turned on.
And then, the ECU 105 monitors whether the ignition key 111 is turned on or not at step S309. That is, the ECU 105 determines that the engine has been started at the step S307, but in a case that the engine is actually not started because the fuel leakage is prevented by closing the leakage cut-off valve 103, the ECU 105 monitors whether the engine has actually been started at the step S309.
And then, the ECU 105 determines if the engine has been started at step S311 and in a case that the ECU 105 determines that the engine has been started, the ECU 105 maintains the leakage cut-off valve 103 opened at step S313.
And then, at step S315 the ECU 105 determines if the ignition key 111 is turned off, and if the ECU determines that the ignition key 111 is turned off, the ECU 105 closes the leakage cut-off valve 103 at step S321 and initializes the timer 113.
After the ECU 105 determines whether the ignition key 111 is turned off at the step S315, if the ECU 105 determines that the ignition key 111 is not turned off, the ECU 105 maintains the leakage cut-off valve 103 open at step S313.
In a case that the ECU 105 determines that the ignition key 111 is not turned on, after the ECU 105 determines whether the ignition key 111 is turned on or not at the step S311, the ECU 105 detects the period by the timer 113 at the step S317.
After the ECU detects the period by the timer 113, if the ECU 105 determines that the period is longer than a predetermined period by the timer 113 at step S319, the ECU 105 closes the leakage cut-off valve 103 at step S321.
In addition, at the step S321 the ECU 105 initializes the timer 113.
This case means that the engine is not actually ignited and only the voltage of the battery 109 exists, therefore the ECU 105 closes the leakage cut-off valve 103.
Therefore, according to a method for controlling the leakage cut-off valve of an exemplary embodiment of the present invention, an error that the leakage cut-off valve 103 is opened cannot occur in spite of an occurrence of a voltage drop of the battery 109 by an unpredictable reason.
The ECU 105 determines if the period by the timer 113 is longer than the predetermined period at the step S319 and if the ECU 105 determines that the period is shorter than the predetermined period, the ECU 105 returns to the step S309.
According to an exemplary embodiment of the present invention, leakage of the fuel is efficiently prevented by the leakage cut-off valve and an amount of Non Methane Hydrocarbon (NMHC) can be reduced.
In addition, because ignition key on-off is determined on the basis of the voltage of the battery, the leakage cut-off valve is opened before the fuel injection, the engine can have a stable startability, and a scheme of a system for controlling the leakage cut-off valve system can be simple.
While this invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
The term "comprising" (and its grammatical variations) as used herein is used in the inclusive sense of "having" or "including" and not in the exclusive sense of "consisting only of'.

Claims (12)

1. A method for controlling a leakage cut-off valve mounted to an injector, comprising: determining whether an ignition key is turned on; monitoring a battery voltage difference in a case that the ignition key is turned on; and opening the leakage cut-off valve in a case that the measured battery voltage difference is higher than or equal to a predetermined value.
2. The method of claim 1, further comprising simultaneously operating a timer at a time of opening the leakage cut-off valve.
3. The method of claim 2, further comprising closing the leakage cut-off valve in a case that the measured battery voltage difference is lower than the predetermined value.
4. The method of claim 2, further comprising: determining whether an engine has been started after the opening of the leakage cut-off valve; maintaining the leakage cut-off valve open in a case that the engine has been started; determining whether the engine stops during maintaining the leakage cut-off valve open; closing the leakage cut-off valve in a case that the engine stops during maintaining the leakage cut-off valve open; and maintaining the leakage cut-off valve open in a case that the engine does not stop during maintaining the leakage cut-off valve open.
The method of claim 4, further comprising: measuring a period while the leakage cut-off valve is open by the timer in a case that the engine has not been started; determining whether the measured period is over a predetermined period; and closing the leakage cut-off valve in a case that the measured period is over the predetermined period.
6. A leakage cut-off valve system comprising an injector supplying a fuel, a leakage cut-off valve connected to the injector to be able to cut-off fuel leakage from the injector, and an electronic control unit (ECU) controlling the leakage cut-off valve, wherein the ECU is programmed to perform: determining whether an ignition key is turned on; monitoring a battery voltage difference in a case that the ignition key is turned on; and opening the leakage cut-off valve in a case that the measured battery voltage difference is higher than or equal to a predetermined value.
7. The system of claim 5, wherein the ECU is programmed to further perform simultaneously operating a timer at a time of opening the leakage cut-off valve.
8. The system of claim 7, wherein the ECU is programmed to further perform closing not opening the leakage cut-off valve in a case that the measured battery voltage difference is lower than the predetermined value.
9. The system of claim 7, wherein the ECU is programmed to further perform: determining whether an engine has been started after the opening of the leakage cut-off valve; maintaining the leakage cut-off valve open in a case that the engine has been started; determining whether the engine stops during maintaining the leakage cut-off valve open; closing the leakage cut-off valve in a case that the engine stops during maintaining the leakage cut-off valve open; and maintaining the leakage cut-off valve open in a case that the engine does not stop during maintaining the leakage cut-off valve open.
The system of claim 9, wherein the ECU is programmed to further perform: measuring a period while the leakage cut-off valve is open by the timer in a case that the engine has not been started; determining whether the measured period is over a predetermined period; and closing the leakage cut-off valve in a case that the measured period is over the predetermined period.
11. A method for controlling a leakage cut-off valve mounted to an injector as substantially hereinbefore described and with reference to the accompanying Figures.
12. A leakage cut-off valve system as substantially hereinbefore described and with reference to the accompanying Figures. Dated this 27 th day of April 2006. Hvundai Motor Company By: HODGKINSON MclNNES PAPPAS Patent Attorneys for the Applicant
AU2006201765A 2005-08-12 2006-04-27 Method and System for Controlling Leakage Cut-off Valve Ceased AU2006201765B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20050074490 2005-08-12
KR10-2005-0074490 2005-08-12
KR1020050112489A KR100717317B1 (en) 2005-08-12 2005-11-23 Method for controlling leakage preventing valve and system thereof
KR10-2005-0112489 2005-11-23

Publications (2)

Publication Number Publication Date
AU2006201765A1 AU2006201765A1 (en) 2007-03-01
AU2006201765B2 true AU2006201765B2 (en) 2008-02-21

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JP (1) JP4313359B2 (en)
CN (1) CN1971016B (en)
AU (1) AU2006201765B2 (en)
IT (1) ITMI20060794A1 (en)
NL (1) NL1031685C2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110939171B (en) * 2019-12-27 2024-01-26 三一重机有限公司 Hydraulic system, excavator and control method

Citations (3)

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Publication number Priority date Publication date Assignee Title
US5992391A (en) * 1997-06-26 1999-11-30 Hitachi, Ltd. Electromagnetic fuel injector and control method thereof
US6076507A (en) * 1997-08-28 2000-06-20 Cummins Engine Company, Inc. Pump system for preventing hot start knock in a diesel engine
JP2003222061A (en) * 2002-01-29 2003-08-08 Toyota Motor Corp Control system of fuel injection valve

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US5598817A (en) * 1993-09-10 1997-02-04 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Fuel feeding system for internal combustion engine
ITVI980145A1 (en) * 1998-07-31 2000-01-31 Lovato Spa Off GROUP FOR ADJUSTMENT OF THE SUPPLY OF GASEOUS FUEL FOR INJECTION IN INTERNAL COMBUSTION ENGINES.
US6564622B2 (en) * 2000-05-31 2003-05-20 Delphi Technologies, Inc. Method of determining soak-related time intervals of an internal combustion engine
CN2448933Y (en) * 2000-08-04 2001-09-19 蚌埠铁路分局阜阳机务段 Overrotation-proof device for fuel feeding system of diesel engine
JP4246431B2 (en) * 2001-12-26 2009-04-02 株式会社日立製作所 Engine fuel control device
JP2005090232A (en) * 2003-09-12 2005-04-07 Hitachi Unisia Automotive Ltd Fuel supply device of internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5992391A (en) * 1997-06-26 1999-11-30 Hitachi, Ltd. Electromagnetic fuel injector and control method thereof
US6076507A (en) * 1997-08-28 2000-06-20 Cummins Engine Company, Inc. Pump system for preventing hot start knock in a diesel engine
JP2003222061A (en) * 2002-01-29 2003-08-08 Toyota Motor Corp Control system of fuel injection valve

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Publication number Publication date
JP2007051632A (en) 2007-03-01
NL1031685A1 (en) 2007-02-13
NL1031685C2 (en) 2008-07-15
CN1971016A (en) 2007-05-30
AU2006201765A1 (en) 2007-03-01
CN1971016B (en) 2010-09-22
ITMI20060794A1 (en) 2007-02-13
JP4313359B2 (en) 2009-08-12

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