AU2006201758B2 - Fuel Supply System for Liquified Petroleum Gas Injection (LPI) Engine - Google Patents

Fuel Supply System for Liquified Petroleum Gas Injection (LPI) Engine Download PDF

Info

Publication number
AU2006201758B2
AU2006201758B2 AU2006201758A AU2006201758A AU2006201758B2 AU 2006201758 B2 AU2006201758 B2 AU 2006201758B2 AU 2006201758 A AU2006201758 A AU 2006201758A AU 2006201758 A AU2006201758 A AU 2006201758A AU 2006201758 B2 AU2006201758 B2 AU 2006201758B2
Authority
AU
Australia
Prior art keywords
fuel
engine
injector
lpi
valve
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
AU2006201758A
Other versions
AU2006201758A1 (en
Inventor
Deok Ryol Kim
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
Original Assignee
Hyundai Motor Co
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 Hyundai Motor Co filed Critical Hyundai Motor Co
Publication of AU2006201758A1 publication Critical patent/AU2006201758A1/en
Application granted granted Critical
Publication of AU2006201758B2 publication Critical patent/AU2006201758B2/en
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F02M21/023—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
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0041—Means for damping pressure pulsations
    • 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
    • Y02T10/12—Improving ICE efficiencies
    • 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)

Description

AUSTRALIA
Patents Act 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT 00
ORIGINAL
In Name of Applicant: Actual Inventor: Address for Service: Invention Title: Details of Basic Application: Hyundai Motor Company Deok Ryol Kim HODGKINSON McINNES PAPPAS Patent Trade Mark Attorneys Levels 3, 20 Alfred Street MILSONS POINT NSW 2061 "Fuel Supply System for Liquified Petroleum Gas Injection (LPI) Engine" Korea Patent Application No. 10-2005-0058754 Filed 30 June 2005 The following statement is a full description of this invention, including the best method of performing it known to us: FUEL SUPPLY SYSTEM FOR LIQUIFIED PETROLEUM GAS INJECTION S(LPI) ENGINE CROSS-REFERENCE TO RELATED APPLICATION 00 oo i' 5 This application claims priority to and the benefit of Korean Patent Application No. 10-2005-0058754 filed in the Korean Intellectual Property Office Non June 30, 2005, the entire content of which is incorporated herein by reference.
BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a fuel supply system of a liquefied petroleum gas injection (LPI) engine. More particularly, the present invention relates to a fuel supply system of an LPI engine preventing fuel leakage in an injector utilized in a fuel system of the LPI engine when the engine restarts after the engine stops.
Description of the Related Art Generally, in an LPG engine, fuel is supplied to an engine by being evaporated and mixed by a mixer and an evaporator.
However, the LPG engine has problems that engine start in winter is difficult and levels of power performance and fuel consumption are deteriorated because of difficulty of precise control and also that an idle state is unstable and engine stop occurs because of a tar of the LPG fuel.
In order to solve these problems, a liquefied petroleum gas injection (LPI) engine is provided where the LPG fuel is directly injected through an injector 29/02 2008 11:15 FAX +61 2 9264 5154 Hodgkinson Mclnnes Pat. Q003/022 00 0 1 without utilizing the mixer and the evaporator.
The LPI engine injects the LPG fuel directly through the injector.
Therefore, since the injector is precisely controlled by an ECU of a vehicle, fuel consumption and power performance are enhanced, winter startability is 00 5 enhanced, and a driver's discontent with periodic maintenance can be prevented.
I/
FIG. 1 shows a fuel supply system of an LPI engine according to the prior N art.
NO
O A fuel pump 2 is mounted in a fuel tank 1 for pumping a licuid-state LPG fuel.
The fuel pumped by the fuel pump 2 is transmitted to a fuel supply line 4 through a fuel tank cut-off valve 3 and transmitted fuel is injected to a combustion chamber 6 of the engine through an injector Remaining fuel returns to the fuel tank 1 through the fuel return line 7.
Further, a supply line cut-off valve 8, for cutting off fuel supply during engine stop, and a temperature sensor 9, for measuring fuel temperature, are mounted to the fuel supply line 4.
In addition, a service valve 10 for maintaining the liquid state of the fuel by collecting gas from the fuel is mounted to the fuel supply line 4.
A pressure sensor 11 for measuring the fuel pressure is mounted to the fuel return line 7.
In the above described fuel supply system of the LPI engine according to the prior art, in a case that a vehicle stops driving and the engine stops, the supply line cut-off valve 8 cuts off the fuel such that the fuel is not supplied from the fuel tank 1 to the fuel supply line 4.
2 COMS ID No: ARCS-181233 Received by IP Australia: Time 12:20 Date 2008-02-29 29/02 2008 11:16 FAX -61 2 9264 5154 Hodgk~nson McInnes Pat. 1004/022 00 However, the fuel remains between a position in which the supply line D) cut-off valve 8 of the fuel supply line 4 is mounted and a position in which the pressure regulator 122 of the fuel return line 7 is mounted due to the pressure regulator 122.
00 5 Therefore, the remaining fuel leaks to the combustion chamber through the injector 5 in response to an increase of pressure when temperature of the engine decreases to room temperature.
\O
STherefore, the fuel becomes thick in the combustion chamber by the fuel leak in the injector.
And then, in a case that the engine restarts, a problem occurs that exhaust gas regulations are not satisfied because excessive hydrocarbon exhaust occurs during an initial time of the engine restart.
In order to solve the problem, an art where a fuel leak cut-off valve is mounted to an end portion of the injector has been developed.
FIG. 2 is a cross-sectional view showing the fuel leak cut-off valve mounted in the end portion of the injector.
The fuel leak cut-off valve 5a mounted to the injector 5 is opened such that the fuel injected from the injector 5 is injected to a cylinder when an ignition apparatus operates.
In addition, the fuel leak cut-off valve 5a is closed such that the fuel pressure in the engine increases in a case that the ignition apparatus stops.
That is, the fuel leak cut-off valve 5a prevents fuel leaking to an intake manifold by collecting the fuel leaked from the injector According to the prior art described above, because the cut-off valve has 3 COMS ID No: ARCS-181233 Received by IP Australia: Time 12:20 Date 2008-02-29 29/02 2008 11:16 FAX +61 2 9264 5154 Hodgkinson Mclnnes Pat. Q005/022 00 0 Sto be mounted to the respective injector of the vehicle engine, a problem occurs that costs increase.
In addition, in a case that a malfunction occurs in the cut-off valve, a problem occurs that an operation of the engine is unstable because fuel injection 0 0 5 by the injector is not smooth.
The above information disclosed in this Background section is only for
O
C enhancement of understanding of the background of the invention and therefore
\O
Sit 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 fuel supply system of a liquefied petroleum gas injection (LPI) engine having advantages of preventing fuel leakage in an injector utilized in a fuel system of the LPI engine when an engine restarts after the engine stops.
An exemplary embodiment of the present invention provides a fuel supply system of a liquefied petroleum gas injection (LPI) engine including a pressure regulator 100 mounted between a fuel pump 2 of a fuel tank 1 and a fuel tank cut-off valve 3 and circulating fuel to the fuel tank 1 in a case that supply pressure of the fuel pump 2 exceeds a predetermined pressure, a pulsating noise absorber 200 mounted to a side of a fuel return line 7 of an injector 5 and eliminating a pulsating noise generated when the injector 5 operates, and a return line cut-off valve 300 opened to return fuel remained in the injector 5 to the fuel tank 1 when the engine stops such that the fuel does not return to the fuel tank 1 when the engine operates.
4 COMS ID No: ARCS-181233 Received by IP Australia: Time 12:20 Date 2008-02-29 29/02 2008 11:16 FAX +61 2 9264 5154 Hodgknson McInnes Pat. @006/022 00 0
C
The fuel supply system of a liquefied petroleum gas injection (LPI) engine Sfurther includes a fuel circulation pipe 110 mounted to the pressure regulator 100 circulating the fuel when the fuel supply pressure exceeds a predetermined pressure.
0 0 5 The return line cut-off valve 300 comprises a signal line 310 inputting an rengine operating signal, a solenoid 320 operated by a signal input through the C signal line 310, a plunger 340 moving downward when the solenoid 320 operates, a return spring 330 returning the plunger 340 upward by applying an elastic force when the solenoid 320 stops, and a case 360 protecting the constituent elements from an outer disturbance by having such installed therein.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a fuel supply system of an LPI engine according to the prior art.
FIG. 2 is a cross-sectional view showing the fuel leak cut-off valve mounted in the end portion of the injector of the fuel supply system of Fig. 1.
FIG. 3 shows a fuel leak preventing apparatus of an LPI engine according to an embodiment of the present invention.
FIG. 4 is a cross-sectional view showing a return line cut-off valve according to an embodiment of the present invention.
Description of Reference Numerals Indicating Primary Elements in the Drawings 100: pressure regulator 110: fuel circulation pipe 200: pulsating noise absorber 300: return line cut-off valve COMS ID No: ARCS-181233 Received by IP Australia: Time 12:20 Date 2008-02-29 29/02 2008 11:16 FAX +61 2 9264 5154 Hodgklnson Mclnnes Pat. 007/022 00 0 r- DETAILED DESCRIPTION OF THE EMBODIMENT An exemplary embodiment of the present invention will hereinafter be described in detail with reference to the accompanying drawings.
0 0 5 FIG. 3 shows a fuel leak preventing apparatus of an LPI encine according to an embodiment of the present invention and FIG. 4 is a cross-sectional view
O
C
showing a return line cut-off valve according to the embodiment of the present
IO
invention.
Fuel used in the LPI engine is stored in a fuel tank 1 and a fuel tank cutoff valve 3 is opened upon an ignition motion of an engine start.
At the same time, a fuel pump 2 operates for supplying the fuel in the fuel tank 1 to the engine through a fuel supply line 4 such that the engine generates power.
At that time, a pressure regulator 100 does not transmit the fuel outside if a fuel supply pressure exceeds a proper level because of a malfunction of the fuel pump 2.
In addition, the pressure regulator 100 circulates the fuel to the fuel tank 1 through a fuel circulation pipe 110 such that fuel with excessive pressure is not supplied through the fuel supply line 4.
The fuel supplied to the engine through the fuel supply line 4 is supplied to the injector 5 through a supply line cut-off valve 8, a temperature sensor 9, and a pressure sensor The injector 5 injects the fuel supplied from outside such that power is generated by operation of the engine.
6 COMS ID No: ARCS-181233 Received by IP Australia: Time 12:20 Date 2008-02-29 29/02 2008 11:16 FAX +61 2 9264 5154 Hodgkinson Mclnnes Pat. 0008/022 00
C
At that time, the return line cut-off valve 300 is closed so that the fuel is Snot transmitted to the fuel tank 1 through the fuel return line 7.
That is, if the engine operates, an engine operating signal is input to the return line cut-off valve 300 through a signal line 310 such that a solenoid 320 00 5 operates.
A plunger 340 moves downward by the operation of the solenoid 320 such
C
that a fuel supply passage 350 is closed, so that the fuel does not return to the fuel tank 1.
At that time, if the engine stops, the solenoid 320 stops and the plunger 340 returns upward to the original position by an elastic force of a return spring 330.
Therefore, the fuel supply passage 350 is opened.
According to the description above, the engine starts when an operation of the return line cut-off valve 300 starts and after a predetermined time passes the return line cut-off valve 300 is closed.
An operation of the fuel pump 2 mounted to the fuel tank 1 may start simultaneously when the operation of the engine starts.
The return line cut-off valve 300 is closed later than the operation of the fuel pump 2 in order to completely fill the fuel supply line 4 with the fuel.
That is, if the return line cut-off valve 300 is closed before the fuel is completely filled up in the fuel line, air and the fuel in the fuel line are simultaneously injected through the injector.
Therefore, because the fuel is thin in the mixture injected to the engine, precise air/fuel ratio control is not realized.
7 COMS ID No: ARCS-181233 Received by IP Australia: Time 12:20 Date 2008-02-29 29/02 2008 11:16 FAX +61 2 9264 5154 Hodgk1nson McInnes Pat. Q009/022 00 0 And then, when the engine stops after the engine has been operating, the Sreturn line cut-off valve 300 is opened and the fuel pump 2 stops.
Therefore, the fuel which is not injected by the injector 5 is not remained inside the injector 5 but re-circulated to the fuel tank 1 through the opened 00 0 5 return line cut-off valve 300.
SThe above described constituent elements of the return line cut-off valve
C
300 are installed in a case 360 so that the elements are not affected by outer
NO
0disturbances and the case 360 is secured by a bolt 370.
In addition, a pulsating noise is generated in the injector 5 when the engine stops or operates and the pulsating noise may be absorbed by a pulsating noise absorber 200.
According to an exemplary embodiment of the present invention, the fuel remained in the injector utilized in the fuel system of the LPI engine can be circulated to the fuel tank after the engine stops.
Therefore, because the fuel in a combustion chamber is not thick when the engine restarts, excessive exhaust of a hydrocarbon during an initial time when the engine restarts can be prevented.
While this invention has been described in connection with what is presently considered to be a practical exemplary embodiment, it is to be understood that the invention is not limited to the disclosed embodiment, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
8 COMS ID No: ARCS-181233 Received by IP Australia: Time 12:20 Date 2008-02-29 SThe term "comprising" (and its grammatical variations) as used herein is 9^ used in the inclusive sense of "having" or "including" and not in the exclusive sense of "consisting only of'.
00 In

Claims (4)

1. A fuel supply system of a liquefied petroleum gas injection (LPI) engine comprising: 00 5 a pressure regulator mounted between a fuel pump of a fuel tank and a fuel tank cut-off valve and circulating fuel to the fuel tank in a case that supply Cl pressure of the fuel pump exceeds a predetermined pressure; \O Sa pulsating noise absorber mounted to a side of a fuel return line of an injector and eliminating a pulsating noise generated when the injector operates; and a return line cut-off valve opened to return fuel remained in the injector to a fuel tank when the engine stops such that the fuel does not return to the fuel tank when the engine operates.
2. The system of claim 1, further comprising; a fuel circulation pipe mounted to the pressure regulator circulating the fuel when the fuel supply pressure exceeds a predetermined pressure.
3. The system of claim 1, wherein the return line cut-off valve comprises: a signal line inputting an engine operating signal; a solenoid operated by a signal input through the signal line; a plunger moving downward when the solenoid operates; a return spring returning the plunger upward by applying an elastic force COMS ID No: ARCS-181233 Received by IP Australia: Time 12:20 Date 2008-02-29 29/02 2008 11:17 FAX +61 2 9264 5154 Hodgklnson McInnes Pat. [011/022 00 O O Swhen the solenoid stops; and 0) a case protecting the constituent elements from an outer disturbance by 0 having such installed therein. 00 5
4. A fuel supply system of a LPI engine as substantially hereinbefore _described and with reference to Figures 3-4. (O 11 COMS ID No: ARCS-181233 Received by IP Australia: Time 12:20 Date 2008-02-29
AU2006201758A 2005-06-30 2006-04-27 Fuel Supply System for Liquified Petroleum Gas Injection (LPI) Engine Ceased AU2006201758B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2005-0058754 2005-06-30
KR1020050058754A KR100693610B1 (en) 2005-06-30 2005-06-30 A fuel supplying apparatus in LPI engine

Publications (2)

Publication Number Publication Date
AU2006201758A1 AU2006201758A1 (en) 2007-01-18
AU2006201758B2 true AU2006201758B2 (en) 2008-04-10

Family

ID=37597154

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2006201758A Ceased AU2006201758B2 (en) 2005-06-30 2006-04-27 Fuel Supply System for Liquified Petroleum Gas Injection (LPI) Engine

Country Status (6)

Country Link
JP (1) JP4393471B2 (en)
KR (1) KR100693610B1 (en)
CN (1) CN100434675C (en)
AU (1) AU2006201758B2 (en)
IT (1) ITMI20060826A1 (en)
NL (1) NL1031681C2 (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10000891A1 (en) * 2000-01-12 2001-07-19 Bayer Ag Process for the preparation of N-methyl-N'-nitroguanidine
JP2005250650A (en) * 2004-03-02 2005-09-15 Nec Electronics Corp Multilayer system and clock controlling method
JP2006065284A (en) * 2004-07-26 2006-03-09 Seiko Epson Corp Light-emitting device and electronic apparatus
WO2007129874A1 (en) * 2006-05-10 2007-11-15 Lg Chem, Ltd. Fabrication method for organic electronic device and organic electronic device fabricated by the same method
KR100790701B1 (en) * 2006-07-14 2008-01-02 삼성전기주식회사 Wirelee module and communication system using at-command, and mothod for binary data
KR100858781B1 (en) * 2006-09-01 2008-09-17 조동신 Electric power plug of a small-sized timer
KR100834031B1 (en) * 2006-10-17 2008-05-30 삼성전기주식회사 Power factor correction circuit using snubber circuit
KR100806325B1 (en) * 2006-12-27 2008-03-03 디엠씨 주식회사 Manufacturing device for turret lathe
KR100813200B1 (en) * 2007-01-15 2008-03-13 (주)태진기술 Regulator circuit for generating of stability voltage
KR100836529B1 (en) * 2007-01-15 2008-06-10 (주)태진기술 Regulator circuit for generating stability voltage
KR100820679B1 (en) * 2007-06-29 2008-04-11 경북대학교 산학협력단 Power system of mobile terminal for vehicle
KR100857335B1 (en) * 2007-07-19 2008-09-05 현대자동차주식회사 Gas feeding apparatus for liquefied natural gas fuel vehicles
KR101271377B1 (en) * 2007-08-10 2013-06-07 현대자동차주식회사 Fuel Pump for LPI Vehicle
JP2010138828A (en) * 2008-12-12 2010-06-24 Nikki Co Ltd Lpg injector and lpg injection device
DE102009046783A1 (en) * 2009-11-17 2011-05-19 Robert Bosch Gmbh Method and device for controlling a quantity control valve
KR101134420B1 (en) 2010-01-27 2012-04-09 한국기계연구원 Automobile LPG fuel System
KR101262638B1 (en) * 2010-12-06 2013-05-08 기아자동차주식회사 A solenoid valve for liquid propane injection system
KR101664508B1 (en) 2011-12-12 2016-10-11 현대자동차주식회사 Device for decreasing temperature of bombe by using latent heat in vaporization and method thereof
KR102159285B1 (en) * 2014-08-21 2020-09-23 두산인프라코어 주식회사 Apparatus and method for controlling a common rail system
BR112019026492A2 (en) * 2017-07-28 2020-07-14 Ac S.A. system for adapting the internal combustion engine to supply gas fuel in the gas phase and gas fuel in the liquid phase
WO2019045676A1 (en) * 2017-08-28 2019-03-07 Volvo Truck Corporation Pressurized fuel system for an engine, and method for operating a pressurized fuel system for an engine
KR102125861B1 (en) 2019-01-04 2020-06-23 (주)모토닉 Damper Integrated LPI Regulator for Pulse Noise Reduction
CN112901375B (en) * 2021-01-29 2022-08-30 友联船厂（蛇口）有限公司 LPG fuel supply system
CN113494364B (en) * 2021-07-27 2022-07-29 达魔重卡电动汽车制造(杭州)有限公司 Closed-loop control module for gas fuel supply system of turbine engine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6267104B1 (en) * 1999-03-18 2001-07-31 Institut Francais Du Petrole System intended for pressure supply of liquid fuel to an internal-combustion engine
KR20020092051A (en) * 2001-06-01 2002-12-11 주식회사 현대오토넷 The Injection System of Liquefied Petroleum Gas
JP2003328858A (en) * 2002-05-13 2003-11-19 Nikki Co Ltd Lpg injection supply device for engine
JP2005016504A (en) * 2003-06-27 2005-01-20 Hyundai Motor Co Ltd Fuel supply system for lpi engine
US6848431B2 (en) * 2002-12-18 2005-02-01 Hyundai Motor Company Fuel feeding system for a liquefied petroleum injection engine
JP2005042700A (en) * 2003-07-25 2005-02-17 Hyundai Motor Co Ltd Returnless fuel system for lpi vehicle
US20050056258A1 (en) * 2003-09-12 2005-03-17 Hitachi Unisia Automotive, Ltd. Fuel supply apparatus and fuel pressure regulating method for internal combustion engine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2070394U (en) * 1990-01-16 1991-01-30 大庆石油化工设计院 Liquefied petroleum gas device for automobile
CN2258538Y (en) * 1996-04-17 1997-07-30 西安公路交通大学 Liquefied petroleum gas and gasoline two-fuel feeder for car 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.
KR100494589B1 (en) * 2003-08-08 2005-06-10 현대자동차주식회사 System for checking and cutting off leaking-gas for LPG vehicle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6267104B1 (en) * 1999-03-18 2001-07-31 Institut Francais Du Petrole System intended for pressure supply of liquid fuel to an internal-combustion engine
KR20020092051A (en) * 2001-06-01 2002-12-11 주식회사 현대오토넷 The Injection System of Liquefied Petroleum Gas
JP2003328858A (en) * 2002-05-13 2003-11-19 Nikki Co Ltd Lpg injection supply device for engine
US6848431B2 (en) * 2002-12-18 2005-02-01 Hyundai Motor Company Fuel feeding system for a liquefied petroleum injection engine
JP2005016504A (en) * 2003-06-27 2005-01-20 Hyundai Motor Co Ltd Fuel supply system for lpi engine
JP2005042700A (en) * 2003-07-25 2005-02-17 Hyundai Motor Co Ltd Returnless fuel system for lpi vehicle
US20050056258A1 (en) * 2003-09-12 2005-03-17 Hitachi Unisia Automotive, Ltd. Fuel supply apparatus and fuel pressure regulating method for internal combustion engine

Also Published As

Publication number Publication date
CN100434675C (en) 2008-11-19
CN1892012A (en) 2007-01-10
NL1031681A1 (en) 2007-01-04
KR20070003029A (en) 2007-01-05
KR100693610B1 (en) 2007-03-14
ITMI20060826A1 (en) 2007-01-01
AU2006201758A1 (en) 2007-01-18
NL1031681C2 (en) 2011-01-18
JP4393471B2 (en) 2010-01-06
JP2007009902A (en) 2007-01-18

Similar Documents

Publication Publication Date Title
AU2006201758B2 (en) Fuel Supply System for Liquified Petroleum Gas Injection (LPI) Engine
AU2006201749B2 (en) Liquefied Petroleum Gas Injection (LPI) System, and Method for Preventing Gas Leakage and Poor Starting Performance using the Same
AU2006201756B2 (en) LPI Engine System
CN100476176C (en) Fuel supply apparatus for internal combustion engine
RU2464439C2 (en) Method and device for control of gas injection system to internal combustion engine operating on liquid and gaseous fuels
JP2007046482A (en) Control device for cylinder injection type internal combustion engine
AU2006201760B2 (en) Fuel Supply System of LPI Engine and Method for Forcibly Returning Fuel Thereby
KR100999613B1 (en) Fuel Supply System Of LPI Engine
JP3878600B2 (en) Returnless fuel system for LPI vehicles
KR20040028887A (en) The preventive device of fuel leakage in a LPG-automobile
AU2006201763B2 (en) System for Preventing Fuel Leakage for LPI Injector
AU2006201761B2 (en) Method for Controlling Fuel Injection of LPI Engine
KR100757161B1 (en) apparatus and method For controlling velocity of Fuel pump of LPI car
KR100749242B1 (en) Method for controlling of fuel supplying apparatus of lpi car
JP2007146672A (en) Internal combustion engine utilizing hydrogen
KR100663619B1 (en) Apparatus and method For controlling Fuel cut of LPI car
WO2014087596A1 (en) Fuel supply device
KR20070027922A (en) Fuel supply system for lpi engine in automobile
KR100681062B1 (en) Exhaust gas output control device at lpi engine stop
KR100586686B1 (en) Elimination Device Of Leaked Fuel For Liquified Petroleum Liquid Injection System
KR100749244B1 (en) Method for controlling fuel supplying apparatus for lpi car
KR100747211B1 (en) system for preventing liquefied petroleum gas leaked of LPI engine
JP2007051632A (en) Method and system of controlling leakage shutoff valve
JP2008202430A (en) Control device and control method for internal combustion engine
KR20050068986A (en) System for protecting leak in the injector for lpg vehicles and method for the same

Legal Events

Date Code Title Description
FGA Letters patent sealed or granted (standard patent)
MK14 Patent ceased section 143(a) (annual fees not paid) or expired