EP3167182A1 - Pump assembly - Google Patents

Pump assembly

Info

Publication number
EP3167182A1
EP3167182A1 EP15723920.3A EP15723920A EP3167182A1 EP 3167182 A1 EP3167182 A1 EP 3167182A1 EP 15723920 A EP15723920 A EP 15723920A EP 3167182 A1 EP3167182 A1 EP 3167182A1
Authority
EP
European Patent Office
Prior art keywords
face
thrust disc
driveshaft
pump assembly
journal portion
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.)
Withdrawn
Application number
EP15723920.3A
Other languages
German (de)
French (fr)
Inventor
James McHattie
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.)
Delphi International Operations Luxembourg SARL
Original Assignee
Delphi International Operations Luxembourg SARL
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 International Operations Luxembourg SARL filed Critical Delphi International Operations Luxembourg SARL
Publication of EP3167182A1 publication Critical patent/EP3167182A1/en
Withdrawn legal-status Critical Current

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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/04—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps
    • F02M59/06—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps with cylinders arranged radially to driving shaft, e.g. in V or star arrangement
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0001—Fuel-injection apparatus with specially arranged lubricating system, e.g. by fuel oil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • 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
    • F02M2200/02—Fuel-injection apparatus having means for reducing wear
    • 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
    • F02M2200/03—Fuel-injection apparatus having means for reducing or avoiding stress, e.g. the stress caused by mechanical force, by fluid pressure or by temperature variations
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/102—Mechanical drive, e.g. tappets or cams

Definitions

  • the present invention relates to a fuel pump assembly and more specifically to a thrust face for a drive shaft suitable for a diesel fuel pump.
  • fuel pumps are designed to accommodate a certain degree of axial loading during operation. Diesel fuel pumps could typically be required to accommodate an inward loading in the region of 50N to 150N.
  • thrust face to accommodate axial loading.
  • the thrust face could be formed by a machined surface inside the housing or cambox (e.g. an aluminium or steel surface), or alternatively by a separate thrust washer, formed of a low friction material such as PTFE.
  • a currently known fuel pump assembly 2 is illustrated in Figures 1 to 3.
  • the known pump assembly 2 comprises a housing 4, and a driveshaft 8.
  • the driveshaft 8 comprises a front journal portion 10, a cam portion 12, and a rear journal portion 14.
  • the rear journal portion 14 extends into a blind bore 16 provided in the housing 4.
  • the rear journal portion 14 stops short of an end face 40 of the blind bore 16, such that a gap 15 exists between an end face 34 of the driveshaft 8 and the end face 40 of the blind bore 16.
  • the driveshaft 8 is provided with a back leak circuit, comprising an axially extending central bore 18 and a radially extending bore 20 with which it communicates.
  • a thrust face 22 is provided to constrain axial movement of the driveshaft 8 during operation of the pump assembly 2.
  • the thrust face 22 is provided on a thrust washer 24 which is integral with a rear bearing 26.
  • the integral thrust washer 24 / rear bearing 26 component is shown in isometric cross-section in Figure 3.
  • prior art pump assemblies comprising a thrust washer provide a protected region in which debris particles from housing machining collects and cannot be washed out. Such debris is liberated during pump operation and can lead to seizure of the pump head. Such debris particles are often too large to leave the housing/cambox, and remain a risk for the life of the pump. Modifying the production process to allow pressing of the bearing into a housing which has been fully machined and washed free of debris adds production line time, complexity and expense.
  • the present invention comprises, in a first aspect, a fuel pump assembly comprising a housing and a driveshaft, the driveshaft comprising a rear journal portion which extends into a blind bore provided in the housing, wherein a thrust disc is provided between an end of the rear journal portion of the driveshaft and an end surface of the blind bore, such that in use of the pump assembly, axial loading of the driveshaft causes an end face of the rear journal portion to contact a first contact face of the thrust face.
  • the present invention solves the problems associated with prior art pump assemblies by removing the requirement for a thrust washer in the housing/cambox, whilst maintaining axial load capability of the pump assembly.
  • the present invention thereby provides a cheaper and simpler pump and thrust face arrangement.
  • a recess may be provided, projecting into the rear journal portion from the end face, and wherein the recess forms part of a back leak circuit.
  • the recess conveniently comprises a slot extending across the diameter of the end face of the rear journal.
  • the thrust disc may be formed of a hard metallic material or a ceramic material.
  • the first contact surface of the thrust disc may be coated with a low friction material.
  • the present invention comprises a thrust disc for use in a pump assembly, the thrust disc comprising a first contact face comprising a machined surface.
  • the present invention comprises a method of assembling the fuel pump assembly as above, the method including machining the first contact surface of the thrust disc, and assembling the pump assembly such that the thrust disc is positioned in the blind bore of the housing, between the end face of the blind bore and the end face of the rear journal portion.
  • the method may further comprising coating the first contact surface of the thrust disc with a low friction material.
  • Figure 4 is a cross-sectional partial view of a pump assembly in accordance with the present invention.
  • FIG. 5 is a detailed cross-sectional partial view of the pump assembly of Figure 4.
  • Figure 6 is an isometric partial view of the drive shaft of the assembly of
  • Figure 4 is an exploded isometric view of the assembly of Figure 4.
  • Figure 8 is an isometric partial view of the assembly of Figure 4.
  • the present invention comprises a pump assembly 102 (certain components of the pump assembly are not illustrated in Figure 4 for clarity), comprising a steel or aluminium housing 104, and a driveshaft 108 comprising a first end 130 and a second end 132.
  • the driveshaft 108 comprises a front journal portion 110 towards the first end 130, a rear journal portion 114 towards the second end 132, and a cam portion 112 between front journal portion 110 and the rear journal portion 114.
  • the rear journal portion 114 extends into a blind bore 116 provided in the housing 104.
  • a rear bearing 126 having a radial outer surface surrounds the rear journal portion 114.
  • the thrust disc 150 comprises two contact surfaces 152, 154, which are machined prior to insertion of the thrust disc 150 into the blind bore 116.
  • the end face 134 at the second end 132 of the driveshaft 108 is provided with a recess formed by a slot 162 (illustrated in Figures 6, 7 and 8), extending into the driveshaft 108 from the end face 134 and across the full diameter of the end face 134.
  • a first, axially extending bore 118 is provided in the drive shaft 108, and communicates with a second, radially extending bore 120 (only the entrance of which is shown in Figure 4).
  • the recess formed by the slot 162, the first bore 118, and the second bore 120 together form a back leak circuit through which a back leak flow of fuel drains to a fuel tank (not shown).
  • axial loading causes the end face 134 of the driveshaft 108 to contact with the first contact surface 152 of the thrust disc 150, thereby causing the second contact surface 154 of the thrust disc 150 to contact the end surface 140 of the blind bore 116 of the housing 104. Axial loading is thereby accommodated by the thrust disc 150.
  • any debris generated due to wear at the driveshaft 108 / thrust disc 150 interface does not pass over the radial surface of the rear bearing 126, or over any other components of the pump assembly 102 which are susceptible to damage by debris.
  • the thrust disc 150 is machined prior to insertion into the housing 104, any debris generated during machining of the thrust disc 150 is not trapped within the pump housing 104 and therefore cleanliness issues during production of the pump assembly 102 are avoided.
  • the thrust disc 150 could be formed of coated steel, hardened steel or other hard metal or ceramic material. Furthermore, either or both of the contact surfaces 152, 154 of the thrust disc 150 may be coated with a low friction material, thereby further increasing wear resistance of the interfaces.
  • the interfaces between the thrust disc 150 and the driveshaft 108 / blind bore 116 could, for example, be steel/steel, steel/aluminium, steel/ceramic, steel/PTFE, etc.
  • thrust disc first contact surface 152 thrust disc second contact surface 154 slot 162

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A metallic or ceramic thrust disc for a diesel fuel pump assembly, located between an end of a driveshaft rear journal portion, and an end surface of a blind bore in the housing, wherein axial loading of the driveshaft causes an end face of the rear journal portion to contact a first contact face of the thrust face, wherein a recess comprising a slot projecting into the rear journal portion from the end face, and wherein the recess forms part of a back leak circuit; and method of assembly a pump assembly including positing the thrust disc in the housing.

Description

Pump Assembly TECHNICAL FIELD
The present invention relates to a fuel pump assembly and more specifically to a thrust face for a drive shaft suitable for a diesel fuel pump.
BACKGROUND OF THE INVENTION
During operation of a fuel pump such as a diesel fuel pump, axial loading will occur, for example as a result of misalignment of pullies. Accordingly, fuel pumps are designed to accommodate a certain degree of axial loading during operation. Diesel fuel pumps could typically be required to accommodate an inward loading in the region of 50N to 150N.
Currently known fuel pumps often comprise a thrust face to accommodate axial loading. The thrust face could be formed by a machined surface inside the housing or cambox (e.g. an aluminium or steel surface), or alternatively by a separate thrust washer, formed of a low friction material such as PTFE. A currently known fuel pump assembly 2 is illustrated in Figures 1 to 3.
The known pump assembly 2 comprises a housing 4, and a driveshaft 8. The driveshaft 8 comprises a front journal portion 10, a cam portion 12, and a rear journal portion 14. The rear journal portion 14 extends into a blind bore 16 provided in the housing 4. The rear journal portion 14 stops short of an end face 40 of the blind bore 16, such that a gap 15 exists between an end face 34 of the driveshaft 8 and the end face 40 of the blind bore 16.
The driveshaft 8 is provided with a back leak circuit, comprising an axially extending central bore 18 and a radially extending bore 20 with which it communicates. A thrust face 22 is provided to constrain axial movement of the driveshaft 8 during operation of the pump assembly 2. In the embodiment shown in Figures 1 to 3, the thrust face 22 is provided on a thrust washer 24 which is integral with a rear bearing 26. The integral thrust washer 24 / rear bearing 26 component is shown in isometric cross-section in Figure 3.
The above currently known pump assemblies require tight tolerances to be effective. Furthermore, wear of the thrust face and of the cam portion of the driveshaft can result in debris in the cambox, which can cause damage to the local radial surface of the rear bearing, thereby affecting the performance of the pump.
Furthermore, prior art pump assemblies comprising a thrust washer provide a protected region in which debris particles from housing machining collects and cannot be washed out. Such debris is liberated during pump operation and can lead to seizure of the pump head. Such debris particles are often too large to leave the housing/cambox, and remain a risk for the life of the pump. Modifying the production process to allow pressing of the bearing into a housing which has been fully machined and washed free of debris adds production line time, complexity and expense.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide an improved pump assembly which at least mitigates the above mentioned problems.
Accordingly, the present invention comprises, in a first aspect, a fuel pump assembly comprising a housing and a driveshaft, the driveshaft comprising a rear journal portion which extends into a blind bore provided in the housing, wherein a thrust disc is provided between an end of the rear journal portion of the driveshaft and an end surface of the blind bore, such that in use of the pump assembly, axial loading of the driveshaft causes an end face of the rear journal portion to contact a first contact face of the thrust face.
The present invention solves the problems associated with prior art pump assemblies by removing the requirement for a thrust washer in the housing/cambox, whilst maintaining axial load capability of the pump assembly. The present invention thereby provides a cheaper and simpler pump and thrust face arrangement.
A recess may be provided, projecting into the rear journal portion from the end face, and wherein the recess forms part of a back leak circuit. The recess conveniently comprises a slot extending across the diameter of the end face of the rear journal.
The thrust disc may be formed of a hard metallic material or a ceramic material. The first contact surface of the thrust disc may be coated with a low friction material.
In a further aspect, the present invention comprises a thrust disc for use in a pump assembly, the thrust disc comprising a first contact face comprising a machined surface.
In a further aspect, the present invention comprises a method of assembling the fuel pump assembly as above, the method including machining the first contact surface of the thrust disc, and assembling the pump assembly such that the thrust disc is positioned in the blind bore of the housing, between the end face of the blind bore and the end face of the rear journal portion. The method may further comprising coating the first contact surface of the thrust disc with a low friction material.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention is now described by way of example with reference to the accompanying drawings in which:
Figure 4 is a cross-sectional partial view of a pump assembly in accordance with the present invention;
Figure 5 is a detailed cross-sectional partial view of the pump assembly of Figure 4;
Figure 6 is an isometric partial view of the drive shaft of the assembly of
Figure 4; Figure 7 is an exploded isometric view of the assembly of Figure 4; and
Figure 8 is an isometric partial view of the assembly of Figure 4.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to Figures 4 to 8, the present invention comprises a pump assembly 102 (certain components of the pump assembly are not illustrated in Figure 4 for clarity), comprising a steel or aluminium housing 104, and a driveshaft 108 comprising a first end 130 and a second end 132. The driveshaft 108 comprises a front journal portion 110 towards the first end 130, a rear journal portion 114 towards the second end 132, and a cam portion 112 between front journal portion 110 and the rear journal portion 114. The rear journal portion 114 extends into a blind bore 116 provided in the housing 104. A rear bearing 126 having a radial outer surface surrounds the rear journal portion 114.
Between an end face 134 at the second end 132 of the driveshaft 108, and an end surface 140 of blind bore 116 in the housing 104, is provided a metallic thrust disc 150. The thrust disc 150 comprises two contact surfaces 152, 154, which are machined prior to insertion of the thrust disc 150 into the blind bore 116.
The end face 134 at the second end 132 of the driveshaft 108 is provided with a recess formed by a slot 162 (illustrated in Figures 6, 7 and 8), extending into the driveshaft 108 from the end face 134 and across the full diameter of the end face 134. A first, axially extending bore 118 is provided in the drive shaft 108, and communicates with a second, radially extending bore 120 (only the entrance of which is shown in Figure 4). The recess formed by the slot 162, the first bore 118, and the second bore 120, together form a back leak circuit through which a back leak flow of fuel drains to a fuel tank (not shown).
During operation of the pump assembly 102, axial loading causes the end face 134 of the driveshaft 108 to contact with the first contact surface 152 of the thrust disc 150, thereby causing the second contact surface 154 of the thrust disc 150 to contact the end surface 140 of the blind bore 116 of the housing 104. Axial loading is thereby accommodated by the thrust disc 150.
The interface between end face 134 of the driveshaft 108 and the thrust disc 150 is lubricated by the back leak fuel flow. This has the advantage of greatly increased wear resistance compared to that of prior art thrust faces.
Furthermore, if any debris is generated due to wear at the interface between the end face 134 of the driveshaft 108 and the first contact surface 152 of the thrust disc 150, such debris will be washed away by the back leak fuel flow, via the back leak circuit and into the fuel tank, and will be subsequently become trapped by the inlet filter (not shown).
Accordingly, any debris generated due to wear at the driveshaft 108 / thrust disc 150 interface does not pass over the radial surface of the rear bearing 126, or over any other components of the pump assembly 102 which are susceptible to damage by debris.
Furthermore, because the thrust disc 150 is machined prior to insertion into the housing 104, any debris generated during machining of the thrust disc 150 is not trapped within the pump housing 104 and therefore cleanliness issues during production of the pump assembly 102 are avoided.
In alternative embodiments, the thrust disc 150 could be formed of coated steel, hardened steel or other hard metal or ceramic material. Furthermore, either or both of the contact surfaces 152, 154 of the thrust disc 150 may be coated with a low friction material, thereby further increasing wear resistance of the interfaces.
Accordingly, the interfaces between the thrust disc 150 and the driveshaft 108 / blind bore 116 could, for example, be steel/steel, steel/aluminium, steel/ceramic, steel/PTFE, etc.
The cost of machining and inserting the thrust disc 150 into the pump assembly 102 is significantly reduced compared to providing the tightly toleranced thrust faces of prior art embodiments. REFERENCES pump assembly 2, 102
housing 4, 104
driveshaft 8, 108
front journal portion 10, 110 cam portion 12, 112
rear journal portion 14, 114 gap 15
blind bore 16, 116
first bore 18, 118
second bore 20, 120
thrust face 22
thrust washer 24
rear bearing 26, 126
driveshaft first end 130
driveshaft second end 132 driveshaft end face 34, 134 blind bore end surface 40, 140 thrust disc 150
thrust disc first contact surface 152 thrust disc second contact surface 154 slot 162

Claims

1. A fuel pump assembly comprising a housing and a driveshaft, the driveshaft comprising a rear journal portion which extends into a blind bore provided in the housing, wherein a thrust disc is provided between an end of the rear journal portion of the driveshaft and an end surface of the blind bore, such that in use of the pump assembly, axial loading of the driveshaft causes an end face of the rear journal portion to contact a first contact face of the thrust disc; wherein a recess is provided in the driveshaft, wherein the recess projects into the rear journal portion from the end face, and wherein the recess forms part of a back leak circuit.
2. An assembly according to claim 1 wherein the recess comprises a slot extending across a diameter of the end face of the rear journal.
3. An assembly as claimed in any one of the preceding claims wherein the thrust disc is formed of a hard metallic material or a ceramic material.
4. An assembly according to any one of the preceding claims wherein the first contact surface of the thrust disc is coated with a low friction material.
5. A thrust disc for use in the pump assembly of claim 1, the thrust disc comprising a first contact face comprising a machined surface.
6. A method of assembling a pump assembly according to any one of the preceding claims, including machining the first contact surface of the thrust disc, and assembling the pump assembly such that the thrust disc is positioned in the blind bore of the housing, between the end face of the blind bore and the end face of the rear journal portion.
7. A method according to claim 7 further comprising coating the first contact surface of the thrust disc with a low friction material.
EP15723920.3A 2014-07-09 2015-05-19 Pump assembly Withdrawn EP3167182A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1412187.5A GB201412187D0 (en) 2014-07-09 2014-07-09 Pump assembly
PCT/EP2015/060943 WO2016005089A1 (en) 2014-07-09 2015-05-19 Pump assembly

Publications (1)

Publication Number Publication Date
EP3167182A1 true EP3167182A1 (en) 2017-05-17

Family

ID=51410846

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15723920.3A Withdrawn EP3167182A1 (en) 2014-07-09 2015-05-19 Pump assembly

Country Status (3)

Country Link
EP (1) EP3167182A1 (en)
GB (1) GB201412187D0 (en)
WO (1) WO2016005089A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5630708A (en) * 1993-12-28 1997-05-20 Zexel Corporation Radial piston pump for low-viscosity fuel
DE19753155A1 (en) * 1997-11-29 1999-06-02 Mannesmann Rexroth Ag Fuel supply system for an internal combustion engine and high pressure pump used therein
EP0979353B1 (en) * 1998-02-27 2004-09-29 Stanadyne Corporation Supply pump for gasoline common rail
WO2003048564A1 (en) * 2001-12-01 2003-06-12 Robert Bosch Gmbh Radial piston pump having force-feed lubrication
DE102012219537A1 (en) * 2012-10-25 2014-04-30 Robert Bosch Gmbh High-pressure fuel pump with a bearing supply via lubrication holes in a drive shaft

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2016005089A1 *

Also Published As

Publication number Publication date
GB201412187D0 (en) 2014-08-20
WO2016005089A1 (en) 2016-01-14

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