WO2018220219A1 - Magnetic high pressure connector - Google Patents

Magnetic high pressure connector Download PDF

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Publication number
WO2018220219A1
WO2018220219A1 PCT/EP2018/064547 EP2018064547W WO2018220219A1 WO 2018220219 A1 WO2018220219 A1 WO 2018220219A1 EP 2018064547 W EP2018064547 W EP 2018064547W WO 2018220219 A1 WO2018220219 A1 WO 2018220219A1
Authority
WO
WIPO (PCT)
Prior art keywords
high pressure
pressure connector
fuel
upstream
downstream
Prior art date
Application number
PCT/EP2018/064547
Other languages
French (fr)
Inventor
Stephen Joseph MACLANE
James T. McHATTIE
Original Assignee
Delphi Technologies Ip Limited
Delphi France Sas
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 Delphi Technologies Ip Limited, Delphi France Sas filed Critical Delphi Technologies Ip Limited
Publication of WO2018220219A1 publication Critical patent/WO2018220219A1/en

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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
    • F02M27/00—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like
    • F02M27/04—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like by electric means, ionisation, polarisation or magnetism
    • F02M27/045—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like by electric means, ionisation, polarisation or magnetism by permanent magnets
    • 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
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/06—Filters making use of electricity or magnetism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/025—High gradient magnetic separators
    • B03C1/031—Component parts; Auxiliary operations
    • B03C1/033—Component parts; Auxiliary operations characterised by the magnetic circuit
    • B03C1/0332—Component parts; Auxiliary operations characterised by the magnetic circuit using permanent magnets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/28—Magnetic plugs and dipsticks
    • B03C1/288—Magnetic plugs and dipsticks disposed at the outer circumference of a recipient
    • 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
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/52—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements using magnetic means
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/165—Filtering elements specially adapted in fuel inlets to injector
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/18—Magnetic separation whereby the particles are suspended in a liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/30—Details of magnetic or electrostatic separation for use in or with vehicles
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/20—Fuel-injection apparatus with permanent magnets

Definitions

  • the present invention relates to a magnetic high pressure connector adapted to be arranged in a fuel injection equipment to retain metallic particles present in the flow.
  • fuel is pressurised in a high pressure pump and is ultimately delivered to fuel injectors which spray said fuel in the cylinders of an internal combustion engine.
  • fuel injectors which spray said fuel in the cylinders of an internal combustion engine.
  • filters arranged in the equipment some metallic particles present in the fuel flow find a way through and damage the fuel injectors. A simple and efficient device retaining said particles is necessary.
  • said high pressure connector comprises an annular magnet member defining a central opening for the fuel to flow through in use so that, metallic particles present in the fuel are trapped.
  • the high pressure connector further comprises a body, the annular magnetic member being arranged onto said body.
  • an inner passage extends between the opposed opening ends of the body, said passage defining a slow-down chamber around which is arranged the magnet member so that, in use, the fuel flow entering said chamber slows down for the magnetic member to attract and retain more easily the metallic particles.
  • the body comprises an upstream member fixed to a downstream member, one of said upstream or downstream members defining connection means, for complementary fixing arrangement of said connector to the pump or the injector or another component of the fuel injection equipment. Also, the other of one of said upstream or downstream members defines a holding means for holding the connector while fixing it onto said another component of the fuel injection equipment.
  • the upstream member has a threaded outer face defining said connection means and, the downstream member has a polygonal outer face defining said holding means.
  • the high pressure connector further defines a narrow inlet conduit drilled in the upstream member and opening in said slow-down chamber wherein the flow section enlarges so that, in use, the flow speed decreases.
  • the high pressure connector further comprises a chicane member arranged in said slow-down chamber so that, in use, fuel flow is forced toward the peripheral area of said chamber where in the magnetic field is stronger.
  • said chicane member defines a cone portion which apex points to the inlet narrow conduit.
  • the cone portion is provided with apertures through which fuel flows.
  • chicane member is fixed in place between the upstream member and the downstream member.
  • Figure 1 is a 3D view of a magnetic high pressure connector as per the invention.
  • Figure 2 is an axial section of the connector of figure 1.
  • Figures 3 and 4 are axial sections of an alternative embodiment of the connector of figure 1.
  • a high pressure (HP) magnetic connector 10 adapted to be inserted in the high pressure circuit of a fuel injection equipment arranged on an internal combustion engine. More precisely, such injection equipment comprises a HP pump delivering, in use, pressurised fuel to a common rail which distributes said pressurised fuel to fuel injectors, ultimately spraying the fuel in the cylinders of the engine.
  • the connector 10 is placed on the fuel flow circuit, between the outlet of the HP pump and the inlet of an injector in order to prevent some particles present in the fuel to enter the injector.
  • the HP connector 10 comprises a generally cylindrical tubular body 12 which, in consideration of the fuel flow direction indicated with arrow A, extends along a main axis X from an upstream end 14, to a downstream end 16.
  • the body 12 itself comprises an upstream member 18 fixed to a downstream member 20. Said two complementary members may we welded together or fixed with other known means.
  • the body 12 defines an inner through passage 22 extending between the said ends 14, 16n said passage 22, in following the general flow direction, comprises a first upstream narrow conduit 24, a chamber 26 and a cylindrical downstream recess 28 establishing together a permanent fluid communication between the upstream end 14 and the downstream end 16.
  • the chamber 26 has a section that enlarges in a first conical portion 30 from the opening of the narrow conduit 24 to a large central section 32, from which, said chamber section restricts in a second conical portion 34 ending in an outlet 36 that centrally opens in the bottom face of the cylindrical downstream recess 28.
  • the chamber 26 is provided with a short cylindrical central portion 38 wherein is defined said large central section 32.
  • Said first conical portion 30 is machined in the upstream member 18 of the body and, the second conical portion 34 is provided in the downstream member 20 of the body.
  • the parting line shown on the figures indicating the faces of said upstream 18 and downstream 20 members in contact against one another.
  • annular magnet member 40 arranged on the external face of the body 12 at substantially equal distances between the upstream 14 and the downstream 16 ends surrounds said central portion 38 and the large central section 32.
  • said annular magnet member 40 is arranged in an annular external groove provided in body.
  • the magnetic member comprises several portions that are arranged one by one in said groove.
  • a pressurised fuel flow enters the HP connector 10 via the narrow conduit 20 wherein said flow has an inlet speed S 1 then, the fuel enters the chamber 22 wherein the speed reduces down to a central speed S2 because the section enlarges and, finally, the flow exits the chamber 22 and continues in the downstream recess 24 flowing toward an injector.
  • test have shown that flow having a maximum value of 150 L/hour resulting in a inlet velocity SI close to lm/s slows down to a central speed S2 of around 0.8m/s at the widest section.
  • the central speed S2 metallic particles present in the fuel are attracted by the magnetic field of said annular magnet member 34 toward the lateral face of the chamber, and preferably by the largest central section 28 where said field is the strongest.
  • the connector 10 is designed to sealingly interconnect components of the fuel equipment.
  • the external face of the upstream end 14 is threaded 42 for complementary tightening for instance in the outlet of the HP pump and, the downstream end 16 is externally shaped with an hexagon 44 for complementary engagement of a tightening tool, a spanner or a wrench and, the lateral face of the recess 28 is internally threaded 46 for complementary connection of the end of a HP pipe.
  • connection means than threads can be utilised such as clips or flanges.
  • other tools can be used requiring other complementary shapes than an hexagon such as simple flats or any type of polygons or other means.
  • the connector 10 further comprises a chicane member 48 arranged within the inner through passage 22, said chicane 48 disrupting and slowing the fuel flow and forcing it to an external path for enabling easier trap by the magnet member 34 of said metallic particles.
  • said chicane member 48 is a circular plate having a central conical portion 50 and a peripheral annular area 52.
  • the central conical portion 50 is oriented toward the upstream end 14 so pointing against the flow direction, and the peripheral annular area 52 is tightened between the upstream 18 and downstream 20 members of the body.
  • the central conical portion 50 extends in the largest part of the first conical portion 30 of the chamber 26 and, said central portion 50 is provided with apertures 54 opening a fluid communication between the first 30 and second 32 conical portions of the chamber.
  • Said apertures 54 are arranged in the largest part of the cone, close to the peripheral area 52 and in use, the fuel flow entering the chamber 26 slows down because of the enlarging section of the chamber, and also because of the chicane member 48 which disturbs the flown and laterally orients it toward the largest area of the chamber 22, where the wall thickness of the connector body is the thinnest, the magnetic field being the strongest so having a maximum influence to retain the metallic particles.

Abstract

A high pressure connector (10) adapted to be inserted between the outlet of a high pressure pump and the inlet of a fuel injector of a fuel injection equipment said high pressure connector (10) comprising an annular magnet member (40) defining a central opening for the fuel to flow through in use so that, metallic particles present in the fuel are trapped.

Description

MAGNETIC HIGH PRESSURE CONNECTOR
TECHNICAL FIELD
The present invention relates to a magnetic high pressure connector adapted to be arranged in a fuel injection equipment to retain metallic particles present in the flow. BACKGROUND OF THE INVENTION
In fuel injection equipment, fuel is pressurised in a high pressure pump and is ultimately delivered to fuel injectors which spray said fuel in the cylinders of an internal combustion engine. Despite filters arranged in the equipment, some metallic particles present in the fuel flow find a way through and damage the fuel injectors. A simple and efficient device retaining said particles is necessary.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to resolve the above mentioned problems in providing a high pressure connector adapted to be inserted between the outlet of a high pressure pump and the inlet of a fuel injector of an fuel injection equipment of an internal combustion engine.
Advantageously, said high pressure connector comprises an annular magnet member defining a central opening for the fuel to flow through in use so that, metallic particles present in the fuel are trapped.
The high pressure connector further comprises a body, the annular magnetic member being arranged onto said body.
Also, an inner passage extends between the opposed opening ends of the body, said passage defining a slow-down chamber around which is arranged the magnet member so that, in use, the fuel flow entering said chamber slows down for the magnetic member to attract and retain more easily the metallic particles.
Also, the body comprises an upstream member fixed to a downstream member, one of said upstream or downstream members defining connection means, for complementary fixing arrangement of said connector to the pump or the injector or another component of the fuel injection equipment. Also, the other of one of said upstream or downstream members defines a holding means for holding the connector while fixing it onto said another component of the fuel injection equipment.
Also, the upstream member has a threaded outer face defining said connection means and, the downstream member has a polygonal outer face defining said holding means.
Also, the high pressure connector further defines a narrow inlet conduit drilled in the upstream member and opening in said slow-down chamber wherein the flow section enlarges so that, in use, the flow speed decreases.
Also, the high pressure connector further comprises a chicane member arranged in said slow-down chamber so that, in use, fuel flow is forced toward the peripheral area of said chamber where in the magnetic field is stronger.
Also, said chicane member defines a cone portion which apex points to the inlet narrow conduit.
Also, the cone portion is provided with apertures through which fuel flows.
Also, said chicane member is fixed in place between the upstream member and the downstream member. BRIEF DESCRIPTION OF THE DRAWINGS
The present invention is now described by way of example with reference to the accompanying drawings in which:
Figure 1 is a 3D view of a magnetic high pressure connector as per the invention.
Figure 2 is an axial section of the connector of figure 1.
Figures 3 and 4 are axial sections of an alternative embodiment of the connector of figure 1.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
In reference to the figures is described a high pressure (HP) magnetic connector 10 adapted to be inserted in the high pressure circuit of a fuel injection equipment arranged on an internal combustion engine. More precisely, such injection equipment comprises a HP pump delivering, in use, pressurised fuel to a common rail which distributes said pressurised fuel to fuel injectors, ultimately spraying the fuel in the cylinders of the engine. The connector 10 is placed on the fuel flow circuit, between the outlet of the HP pump and the inlet of an injector in order to prevent some particles present in the fuel to enter the injector.
More precisely, the HP connector 10 comprises a generally cylindrical tubular body 12 which, in consideration of the fuel flow direction indicated with arrow A, extends along a main axis X from an upstream end 14, to a downstream end 16. The body 12 itself comprises an upstream member 18 fixed to a downstream member 20. Said two complementary members may we welded together or fixed with other known means.
The body 12 defines an inner through passage 22 extending between the said ends 14, 16n said passage 22, in following the general flow direction, comprises a first upstream narrow conduit 24, a chamber 26 and a cylindrical downstream recess 28 establishing together a permanent fluid communication between the upstream end 14 and the downstream end 16.
The chamber 26 has a section that enlarges in a first conical portion 30 from the opening of the narrow conduit 24 to a large central section 32, from which, said chamber section restricts in a second conical portion 34 ending in an outlet 36 that centrally opens in the bottom face of the cylindrical downstream recess 28.
In an alternative shown on the figures, between the first 30 and the second 34 conical portions, the chamber 26 is provided with a short cylindrical central portion 38 wherein is defined said large central section 32. Said first conical portion 30 is machined in the upstream member 18 of the body and, the second conical portion 34 is provided in the downstream member 20 of the body. The parting line shown on the figures indicating the faces of said upstream 18 and downstream 20 members in contact against one another.
Also, an annular magnet member 40 arranged on the external face of the body 12 at substantially equal distances between the upstream 14 and the downstream 16 ends surrounds said central portion 38 and the large central section 32. As it is visible on figure 2, said annular magnet member 40 is arranged in an annular external groove provided in body. To enable such arrangement, the magnetic member comprises several portions that are arranged one by one in said groove.
In use, a pressurised fuel flow enters the HP connector 10 via the narrow conduit 20 wherein said flow has an inlet speed S 1 then, the fuel enters the chamber 22 wherein the speed reduces down to a central speed S2 because the section enlarges and, finally, the flow exits the chamber 22 and continues in the downstream recess 24 flowing toward an injector. As an illustration, test have shown that flow having a maximum value of 150 L/hour resulting in a inlet velocity SI close to lm/s slows down to a central speed S2 of around 0.8m/s at the widest section. When entering the chamber 22 and flowing at its lowest speed, the central speed S2, metallic particles present in the fuel are attracted by the magnetic field of said annular magnet member 34 toward the lateral face of the chamber, and preferably by the largest central section 28 where said field is the strongest.
Externally, the connector 10 is designed to sealingly interconnect components of the fuel equipment. In the embodiment presented on the figures the external face of the upstream end 14 is threaded 42 for complementary tightening for instance in the outlet of the HP pump and, the downstream end 16 is externally shaped with an hexagon 44 for complementary engagement of a tightening tool, a spanner or a wrench and, the lateral face of the recess 28 is internally threaded 46 for complementary connection of the end of a HP pipe. Other connection means than threads can be utilised such as clips or flanges. Also other tools can be used requiring other complementary shapes than an hexagon such as simple flats or any type of polygons or other means.
In an alternative presented on figures 3 and 4, the connector 10 further comprises a chicane member 48 arranged within the inner through passage 22, said chicane 48 disrupting and slowing the fuel flow and forcing it to an external path for enabling easier trap by the magnet member 34 of said metallic particles.
In the embodiment presented said chicane member 48 is a circular plate having a central conical portion 50 and a peripheral annular area 52. The central conical portion 50 is oriented toward the upstream end 14 so pointing against the flow direction, and the peripheral annular area 52 is tightened between the upstream 18 and downstream 20 members of the body. As shown, the central conical portion 50 extends in the largest part of the first conical portion 30 of the chamber 26 and, said central portion 50 is provided with apertures 54 opening a fluid communication between the first 30 and second 32 conical portions of the chamber. Said apertures 54 are arranged in the largest part of the cone, close to the peripheral area 52 and in use, the fuel flow entering the chamber 26 slows down because of the enlarging section of the chamber, and also because of the chicane member 48 which disturbs the flown and laterally orients it toward the largest area of the chamber 22, where the wall thickness of the connector body is the thinnest, the magnetic field being the strongest so having a maximum influence to retain the metallic particles.
LIST OF REFERENCES
A flow direction
X mam axis
10 connector
12 body
14 upstream end
16 downstream end
18 upstream member of the body
20 downstream member of the body
22 inner through passage
24 first upstream narrow conduit
26 chamber
28 downstream recess
30 first conical portion
32 large central section
34 second conical portion
36 outlet of the chamber
38 central portion
40 annular magnet member
42 external thread of the upstream end
44 hexagon
46 internal thread of the downstream end
48 chicane member
50 central cone portion
52 annular area
54 apertures

Claims

CLAIMS:
1. High pressure connector (10) adapted to be inserted between the outlet of a high pressure pump and the inlet of a fuel injector of an fuel injection equipment of an internal combustion engine said high pressure connector (10) comprising an annular magnet member (40) defining a central opening for the fuel to flow through in use so that, metallic particles present in the fuel are trapped and wherein,
the high pressure connector (10) comprises a body (12) extending from an upstream end (14) to a downstream end (16), the annular magnetic member (40) being arranged onto said body (12) and wherein,
an inner passage (22) extends between said opposed opening ends (14, 16) of the body, said passage (22) defining a slow-down chamber (26) around which is arranged the magnet member (40) so that, in use, the fuel flow entering said chamber (26) slows down for the magnetic member to attract and retain more easily the metallic particles.
2. High pressure connector (10) as claimed in claim 1 wherein the body (12) comprises an upstream member (18) fixed to a downstream member (20), one of said upstream or downstream members defining connection means (42, 46) for complementary fixing arrangement of said connector (10) to the pump or the injector or another component of the fuel injection equipment.
3. High pressure connector (10) as claimed in claim 2 wherein the other of one of said upstream (18) or downstream (20) members defines a holding means
(44) for holding the connector (10) while fixing it onto said another component of the fuel injection equipment.
4. High pressure connector (10) as claimed in claim 3 wherein the upstream member (18) has a threaded outer face (42) defining said connection means and, the downstream member (20) has a polygonal outer face (44) defining said holding means.
5. High pressure connector (10) as claimed in any of the claims 2 to 4 further defining a narrow inlet conduit (24) drilled in the upstream member (18) and opening in said slow-down chamber (26) wherein the flow section enlarges so that, in use, the flow speed decreases.
6. High pressure connector (10) as claimed in any of the claims 2 to 5 further comprising a chicane member (48) arranged in said slow-down chamber (26) so that, in use, fuel flow is forced toward the peripheral area of said chamber where in the magnetic field is stronger.
7. High pressure connector (10) as claimed in the combination of claims 5 and 6 wherein said chicane member (48) defines a cone portion (50) which apex points to the inlet narrow conduit (24). 8. High pressure connector (10) as claimed in claim 7 wherein the cone portion (50) is provided with apertures (54) through which fuel flows.
9. High pressure connector (10) as claimed in claim 6 wherein said chicane member (48) is fixed in place between the upstream member (18) and the downstream member (20).
PCT/EP2018/064547 2017-06-02 2018-06-04 Magnetic high pressure connector WO2018220219A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1708842.8 2017-06-02
GB1708842.8A GB2563074A (en) 2017-06-02 2017-06-02 Magnetic HP connector

Publications (1)

Publication Number Publication Date
WO2018220219A1 true WO2018220219A1 (en) 2018-12-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/064547 WO2018220219A1 (en) 2017-06-02 2018-06-04 Magnetic high pressure connector

Country Status (2)

Country Link
GB (1) GB2563074A (en)
WO (1) WO2018220219A1 (en)

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GB201708842D0 (en) 2017-07-19

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