AU2006201755B2 - Fuel Rail Structure of LPG Vehicle - Google Patents

Fuel Rail Structure of LPG Vehicle Download PDF

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Publication number
AU2006201755B2
AU2006201755B2 AU2006201755A AU2006201755A AU2006201755B2 AU 2006201755 B2 AU2006201755 B2 AU 2006201755B2 AU 2006201755 A AU2006201755 A AU 2006201755A AU 2006201755 A AU2006201755 A AU 2006201755A AU 2006201755 B2 AU2006201755 B2 AU 2006201755B2
Authority
AU
Australia
Prior art keywords
fuel rail
fuel
rail
lpg
injector
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
AU2006201755A
Other versions
AU2006201755A1 (en
Inventor
Hong Suk Choi
Inyong Ohm
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 AU2006201755A1 publication Critical patent/AU2006201755A1/en
Application granted granted Critical
Publication of AU2006201755B2 publication Critical patent/AU2006201755B2/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
    • F02M21/0248—Injectors
    • F02M21/0281—Adapters, sockets or the like to mount injection valves onto engines; Fuel guiding passages between injectors and the air intake system or the combustion chamber
    • 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
    • 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
    • F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
    • F02M21/0209—Hydrocarbon fuels, e.g. methane or acetylene
    • F02M21/0212—Hydrocarbon fuels, e.g. methane or acetylene comprising at least 3 C-Atoms, e.g. liquefied petroleum gas [LPG], propane or butane
    • 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
    • F02M21/0245—High pressure fuel supply systems; Rails; Pumps; Arrangement of 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and 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
    • F02M21/0287—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers characterised by the transition from liquid to gaseous phase ; Injection in liquid phase; Cooling and low temperature storage
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F02M55/025—Common rails
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Description

AUSTRALIA
Patents Act 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT
ORIGINAL
Name of Applicant: Actual Inventors: Address for Service: Invention Title: Details of Basic Application: Hyundai Motor Company Hong Suk Choi Inyong Ohm HODGKINSON McINNES PAPPAS Patent Trade Mark Attorneys Levels 3, 20 Alfred Street MILSONS POINT NSW 2061 "Fuel Rail Structure of LPG Vehicle" Korea Patent Application No. 10-2005-0119953 Filed 8 December 2005 The following statement is a full description of this invention, including the best method of performing it known to us: P20496AU00 TITLE OF THE INVENTION FUEL RAIL STRUCTURE OF LPG VEHICLE CROSS-REFERENCE TO RELATED APPLICATION This application claims priority to and the benefit of Korean Patent Application No. 10-2005-0119953 filed in the Korean Intellectual Property Office on December 08, 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 rail structure of an LPG vehicle.
More particularly, the present invention relates to a fuel rail structure of an LPG vehicle for preventing LPG fuel from being injected in a liquid state.
Description of the Related Art A conventional LPG vehicle uses a scheme of a gasoline fuel injection system, such as a Top Feeding type or a Side Feeding type.
That is, a fuel rail of a conventional LPG vehicle is secured to an outside of an intake manifold by a bolt, and an injector is connected to the fuel rail.
However, in a case of a fuel rail of a conventional LPG vehicle, LPG fuel stored in a lower portion of the fuel rail is injected in a liquid state so that the air/fuel ratio is deteriorated when a temperature is low.
In addition, in order to prevent the LPG fuel from being injected in a liquid state, a temperature of 100% butane gas must be higher than 40 degrees Celsius when a pressure in the fuel rail is 2 bars, and a temperature of a gas mixed with 30% propane gas must be higher than 15 degrees Celsius when a pressure in the fuel rail is 2 bars. Therefore, in order to prevent the LPG fuel from being injected in a liquid state, an additional heating apparatus is required.
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 fuel rail structure of an LPG vehicle having an advantage of preventing LPG fuel from being injected in a liquid state, without an additional heating apparatus.
The fuel rail is formed in an L-shaped cross-section and it includes an upper rail portion connected with at least one injector and a lower rail portion for preventing the LPG fuel from being injected in a liquid state, wherein the lower rail portion is positioned lower than a connected portion of the fuel rail and the at least one injector.
The upper rail portion includes partitions disposed at predetermined intervals and respectively having a hole such that fluctuation of an interior pressure of the fuel rail is prevented.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a fuel rail structure according to an exemplary embodiment of the present invention.
FIG. 2 is a cross-sectional view along the line A-A of FIG. 1 according to the exemplary embodiment of the present invention.
FIG. 3 is a cross-sectional view along the line B-B of FIG. 1 according to the exemplary embodiment of the present invention.
*Description of Reference Numerals Indicating Primary Elements in the Drawings* Fuel rail 11: Upper rail portion 12: Lower rail portion 20: Injector Partition 31: Hole DETAILED DESCRIPTION OF THE EMBODIMENT An exemplary embodiment of the present invention will hereinafter be described in detail with reference to the accompanying drawings.
FIG. 1 is a perspective view of a fuel rail structure according to an exemplary embodiment of the present invention, FIG. 2 is a cross-sectional view along the line A-A of FIG. 1 according to the exemplary embodiment of the present invention, and FIG. 3 is a cross-sectional view along the line B-B of FIG. 1 according to the exemplary embodiment of the present invention.
As shown in FIG. 1 to FIG. 3, according to the exemplary embodiment of the present invention, the rail structure of an LPG vehicle includes a fuel rail and at least one injector 20 connected to the fuel rail 10. The fuel rail 10 is formed in an L-shaped cross-section. The fuel rail 10 includes an upper rail portion 11 connected with the at least one injector 20, and a lower rail portion 12 for preventing LPG fuel from being injected in a liquid state.
Here, the upper rail portion 11 includes a plurality of partitions respectively having a hole 31 for preventing fluctuation of an interior pressure of the fuel rail 10, wherein the partitions are apart from each other at a predetermined distance.
That is, as shown in FIG. 1 to FIG. 3, according to the exemplary embodiment of the present invention, the cross-section of the fuel rail 10 for an LPG vehicle is in an L shape that is formed by the upper rail portion 11 and the lower rail portion 12, and a plurality of partitions 30 respectively provided with a hole 31 are provided in the upper rail portion 11.
When the at least one injector 20 is connected to the upper rail portion 11, the lower rail portion 12 is positioned lower than a connected portion of the upper rail portion 11 and the at least one injector 20. Therefore, even if LPG fuel in a liquid state remains in the lower rail portion 12, the LPG fuel is prevented from being injected in a liquid state through the at least one injector Meanwhile, the plurality of partitions 30 respectively having a hole 31 are provided in the upper rail portion 11 with predetermined intervals.
Therefore, when the LPG fuel in the upper rail portion 11 is injected through the at least one injector 20 in a vapor state, the interior pressure of the fuel rail 10 is prevented from fluctuating by the partitions Consequently, the pressure of the fuel rail 10 is maintained constant, so that the LPG fuel may be stably injected through the at least one injector In the above description, the present invention provides a fuel rail structure having an L-shaped cross-section, and prevents the LPG fuel from being injected in a liquid state without an additional heating apparatus.
Furthermore, an interior pressure of the fuel rail is prevented from fluctuating, and thus, injections of the LPG fuel may be stably maintained.
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.
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 (3)

1. A fuel rail structure of a LPG vehicle including a fuel rail and at least one injector connected to the fuel rail, wherein: the fuel rail is formed in an L-shaped cross-section; the fuel rail comprises an upper rail portion connected with the at least one injector and a lower rail portion for preventing LPG fuel from being injected in a liquid state; and the lower rail portion is positioned lower than a connected portion of the fuel rail and the at least one injector.
2. The rail structure of a LPG vehicle of claim 1, wherein the upper rail portion comprises a plurality of partitions disposed at predetermined intervals and respectively having a hole such that an interior pressure of the fuel rail is prevented from fluctuating.
3. A fuel rail structure of a LPG vehicle including a fuel rail and at least one injector connected to the fuel rail 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
AU2006201755A 2005-12-08 2006-04-27 Fuel Rail Structure of LPG Vehicle Ceased AU2006201755B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020050119953A KR20070060481A (en) 2005-12-08 2005-12-08 Fuel rail structure of a lpg car
KR10-2005-0119953 2005-12-08

Publications (2)

Publication Number Publication Date
AU2006201755A1 AU2006201755A1 (en) 2007-06-28
AU2006201755B2 true AU2006201755B2 (en) 2007-10-04

Family

ID=38130159

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2006201755A Ceased AU2006201755B2 (en) 2005-12-08 2006-04-27 Fuel Rail Structure of LPG Vehicle

Country Status (6)

Country Link
JP (1) JP4218973B2 (en)
KR (1) KR20070060481A (en)
CN (1) CN1978887A (en)
AU (1) AU2006201755B2 (en)
IT (1) ITMI20060795A1 (en)
NL (1) NL1031679C2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8251047B2 (en) * 2010-08-27 2012-08-28 Robert Bosch Gmbh Fuel rail for attenuating radiated noise
CN102733996A (en) * 2012-06-28 2012-10-17 奇瑞汽车股份有限公司 Gas injection rail arrangement structure for vehicle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5033444A (en) * 1990-09-04 1991-07-23 Kaufman Ray L Liquid butane fuel injection for internal combustion engines
US5291869A (en) * 1993-05-28 1994-03-08 Bennett David E Liquified petroleum gas fuel supply system
US5343847A (en) * 1993-09-13 1994-09-06 Pacer Industries, Inc. Electronic gaseous fuel injection system
US5584467A (en) * 1993-09-13 1996-12-17 Echlin Inc. Linear gaseous fuel flow controller
US20030140970A1 (en) * 2002-01-31 2003-07-31 Benjey Robert P. Method and system for controlling liquid fuel and vapor flow during refueling of a motor vehicle fuel tank

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5033444A (en) * 1990-09-04 1991-07-23 Kaufman Ray L Liquid butane fuel injection for internal combustion engines
US5291869A (en) * 1993-05-28 1994-03-08 Bennett David E Liquified petroleum gas fuel supply system
US5343847A (en) * 1993-09-13 1994-09-06 Pacer Industries, Inc. Electronic gaseous fuel injection system
US5584467A (en) * 1993-09-13 1996-12-17 Echlin Inc. Linear gaseous fuel flow controller
US20030140970A1 (en) * 2002-01-31 2003-07-31 Benjey Robert P. Method and system for controlling liquid fuel and vapor flow during refueling of a motor vehicle fuel tank

Also Published As

Publication number Publication date
NL1031679C2 (en) 2007-06-11
KR20070060481A (en) 2007-06-13
AU2006201755A1 (en) 2007-06-28
JP4218973B2 (en) 2009-02-04
CN1978887A (en) 2007-06-13
JP2007154866A (en) 2007-06-21
ITMI20060795A1 (en) 2007-06-09

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