EP3368766A1 - High pressure fuel pump - Google Patents

High pressure fuel pump

Info

Publication number
EP3368766A1
EP3368766A1 EP16782287.3A EP16782287A EP3368766A1 EP 3368766 A1 EP3368766 A1 EP 3368766A1 EP 16782287 A EP16782287 A EP 16782287A EP 3368766 A1 EP3368766 A1 EP 3368766A1
Authority
EP
European Patent Office
Prior art keywords
shoe
cavity
pump
bore
approximately
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.)
Granted
Application number
EP16782287.3A
Other languages
German (de)
French (fr)
Other versions
EP3368766B1 (en
Inventor
Stephen Hutchins
Stephen Joseph MACLANE
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.)
Borgwarner US Technologies LLC
Original Assignee
Delphi Technologies IP Ltd
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 Ltd filed Critical Delphi Technologies IP Ltd
Publication of EP3368766A1 publication Critical patent/EP3368766A1/en
Application granted granted Critical
Publication of EP3368766B1 publication Critical patent/EP3368766B1/en
Active 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
    • 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
    • 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
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0426—Arrangements for pressing the pistons against the actuated cam; Arrangements for connecting the pistons to the actuated cam

Definitions

  • the present invention relates generally to the field of high pressure fuel pumps. More particularly, but not exclusively, the present invention concerns an adapted shoe for high pressure diesel fuel pumps.
  • a typical high pressure diesel fuel pump adopting a roller-shoe arrangement as part of the drivetrain comprises a plunger 2 extending from a hydraulic head 1 along a pumping axis A-A'.
  • a plunger return spring 3 is seated around the head 1 and extends to the top of a spring seat 4 fixed near a lower end 2a of the plunger 2.
  • the lower end 2a of the plunger 2 contacts an upper face of a shoe 5.
  • the shoe 5 slides within an axial bore 6a (disposed along the pumping axis A-A') of a shoe guide 6.
  • a roller 7 is mounted and retained within an aperture provided at a lower end of the shoe 5 and slides within the bore 6a with the shoe 5.
  • the roller 7 contacts a surface of a cam 8, which is driven to rotate by a rotating driveshaft (not shown) to provide upward sliding motion along the pumping axis A- A'.
  • Fuel residing in the clearance between the roller 7 and the shoe 5 forms a hydrodynamic film therebetween. To maintain the film and prevent collapse, a constant supply of fuel into the clearance between the roller 7 and the shoe 5 is required.
  • the interface between the roller 7 and the shoe 5 is not adequately lubricated, the arrangement has a tendency to seize during use. This, in turn, causes unnecessary wear on the cam 8 and disrupts smooth and efficient running of the drivetrain. Accordingly, the interface between the roller 7 and the shoe 5 requires a continuous supply of fuel during use. It is an object of the present invention to address one or more of the problems of known designs, particularly, but not exclusively in high pressure diesel fuel pumps.
  • a high pressure diesel fuel pump comprising a pumping assembly and a drivetrain assembly, the pumping assembly comprising a plunger extending from a pump head along a pumping axis, the drivetrain assembly comprising a drive shaft and a cam mounted thereon within a cambox of a housing, a shoe for contact with a lower end of the plunger, a roller mounted within a cavity of the shoe for contact with the cam, and a shoe guide mounted within a guide chamber of the housing substantially between the cam and the plunger and adapted to receive the shoe and roller within a bore thereof, wherein the plunger is arranged for reciprocating linear movement along the pumping axis within a pumping chamber of the housing upon rotation of the cam, characterised in that the shoe comprises at least one fuel delivery means extending between an upper surface of the shoe and an unloaded region of the cavity.
  • the fuel delivery means constantly supplies fuel to the interface between the roller and the shoe within the cavity, to promote the creation and maintenance of a hydrodynamic film.
  • the drivetrain assembly has a reduced tendency to seize and therefore, runs smoothly and efficiently during use, whilst minimising wear on the cam.
  • 'unloaded region of the cavity' what is meant is one or more segments of the cavity that is/are (a) not located directly under the plunger contact area, and (b) above the diametric line that lies laterally across the cavity.
  • 'plunger contact area' what is meant is a central 30% of the upper surface of the shoe.
  • the fuel delivery means comprises a bore through a body of the shoe connecting the upper surface of the shoe with the cavity.
  • the bore comprises an internal opening in a wall of the cavity in said unloaded region of the cavity.
  • the internal opening is located in a segment of the cavity wall extending between approximately 15° and approximately 75° from the pumping axis (in any direction).
  • the internal opening may be located in a segment of the cavity wall extending between approximately 30° and approximately 60° from the pumping axis (in any direction).
  • the internal opening may be located in a segment of the cavity wall extending between approximately 15° and approximately 30° from the pumping axis (in any direction).
  • the internal opening may located in a segment of the cavity wall extending between approximately 60° and approximately 89° from the pumping axis (in any direction).
  • the internal opening may be located at approximately 45° from the pumping axis (in any direction).
  • the internal opening comprises a single aperture.
  • the internal opening is disposed approximately centrally along a length of the cavity.
  • the internal opening terminates in a reservoir provided in the cavity wall.
  • the reservoir comprises a recess cut into said cavity wall.
  • the recess extends longitudinally along substantially the length of the cavity wall.
  • the recess is a closed-ended channel, e.g. does not extend the full length of the cavity so as to be closed to end walls of the shoe.
  • the recess extends along approximately between 60% and 90% of the length of the cavity wall.
  • the bore may comprise an external opening in the upper surface of the shoe.
  • the bore comprises an external opening into a link.
  • 'link' what is meant is a connecting passage between the external opening and the upper surface of the shoe.
  • the link may be provided internally of the body of the shoe.
  • the link is provided in the side wall of the shoe, e.g. open to the side wall of the shoe.
  • the link comprises a hollow cut into said side face and open to the upper surface of the shoe.
  • the link is closed to a bottom end of the shoe.
  • the link extends from the upper surface to just below the external opening of the bore.
  • the bore is disposed on a downwardly sloping angle between external opening and the internal opening.
  • the angle comprises between approximately 15° and approximately 75° relative to the pumping axis. More preferably, the angle comprises between approximately 30° and approximately 60° relative to the pumping axis. Most preferably, the angle comprises approximately 45° relative to the pumping axis.
  • the fuel delivery means may comprise a plurality of bores disposed in said body relative to one side wall of the shoe each connecting the upper surface of the shoe and the cavity. Each bore may therefore, comprise a separate link at the external opening and/or a separate reservoir at the internal opening. However, the plurality of bores may share a universal link and/ or a universal reservoir.
  • the universal link may extend substantially along significant proportion of a side wall/ upper surface of the shoe to encompass all of the bores, e.g. between approximately 60% and 90% of the length of the side wall/ upper surface.
  • the fuel delivery means may comprise a primary bore connected to the upper surface of the shoe and a plurality of secondary bores branching off to the cavity therefrom.
  • the plurality of bores may share a universal link at the external opening of the primary bore and a universal reservoir at the internal opening.
  • the universal link may comprise a narrow hollow that is disposed substantially centrally on the side wall/ upper surface of the shoe. Where there are a plurality of bores, preferably, the bores are substantially equally spaced along a length of the body of the shoe.
  • both the internal opening and the external opening of a specific bore are located at substantially the same distance from an end wall of the shoe, e.g. the plane of a bore relative to end walls of the shoe remains constant from the external opening to the internal opening.
  • the shoe comprises fuel delivery means arranged to supply fuel to both sides of the cavity. Therefore, preferably, the shoe comprises one fuel delivery means commencing in one side face of the shoe terminating in one side of the cavity wall and a second fuel delivery means commencing in an opposing side face of the shoe terminating in an opposing side of the cavity wall.
  • the two fuel delivery means are disposed on opposite sides of the pumping axis.
  • the fuel delivery means are configured to be the same in both side faces. This not only brings balance to the shoe, but also enables the shoe to be used in two different orientations within the bore of the shoe guide.
  • the pump is a diesel pump.
  • a drivetrain assembly for a high pressure fuel pump comprising a drive shaft and a cam mounted thereon within a cambox of a housing, a shoe for contact with a lower end of the plunger, a roller mounted within a cavity of the shoe for contact with the cam, and a shoe guide mounted within a guide chamber of the housing substantially between the cam and the plunger and adapted to receive the shoe and roller within a bore thereof, characterised in that the shoe comprises at least one fuel delivery means extending between an upper surface of the shoe and an unloaded region of the cavity.
  • a shoe for a drivetrain assembly of a high pressure fuel pump comprising a cavity for a roller to be mounted therein, characterised in that the shoe comprises at least one fuel delivery means extending between an upper surface of the shoe and an unloaded region of the cavity.
  • Figure 1 is a cross-sectional side view of a high pressure diesel fuel pump according to an embodiment of the invention
  • Figure 2 is cross-sectional exploded side view of the pump of Figure 1;
  • Figure 3 is a schematic cross-sectional end view of the shoe for a drivetrain assembly of a high pressure fuel pump according to Figure 1;
  • Figure 4 is a schematic perspective side view of the shoe for a drivetrain assembly of a high pressure fuel pump according to a different embodiment of the invention
  • Figure 5 is a schematic cross-sectional end view of the shoe for a drivetrain assembly of a high pressure fuel pump according to Figure 4;
  • Figure 6 is a schematic perspective side-end view of a shoe for a drivetrain assembly of a high pressure fuel pump according to Figure 4.
  • Figure 7 is a schematic perspective bottom view of the shoe for a drivetrain assembly of a high pressure fuel pump according to Figure 4.
  • a high pressure diesel fuel pump 1 comprises a pumping assembly 10 and a drivetrain assembly 20, the pumping assembly comprising a plunger 12 extending from a pump head 11 along a pumping axis A-A', the drivetrain assembly 20 comprising a drive shaft and a cam 80 mounted thereon within a cambox 21 of a housing 22, a shoe 50 for contact with a lower end 12a of the plunger 12, a roller 70 mounted within a cavity 52 of the shoe 50 for contact with the cam 80, and a shoe guide 60 mounted within a guide chamber 23 of the housing 22 substantially between the cam 80 and the plunger 12 and adapted to receive the shoe 50 and roller 70 within a bore 62 thereof, wherein the plunger 12 is arranged for reciprocating linear movement along the pumping axis A-A' within a pumping chamber 24 of the housing 22 upon rotation of the cam 80, characterised in that the shoe 50 comprises at least one fuel delivery means 90 extending between an upper surface 53 of the shoe 50 and an unloaded region
  • the shoe 50 comprises a generally cu boidal body 51 with the upper face 53 and a lower face 54.
  • the cavity 52 for the roller 70 is provided in the bottom face 54, whilst the upper face 53 contacts the lower end 12a of the plunger 12.
  • the body 51 comprises a pair of opposing side faces 55a, 55b and a pair of opposing end faces 56a, 56b.
  • the cavity 52 for the roller 70 extends between the pair of end faces 56a, 56b and is open to both.
  • the side faces 55a, 55b are substantially closed to the cavity 52.
  • the side faces 55a, 55b are elongate compared with the end faces 56a, 56b.
  • the body 51 comprises blunted corners 51a.
  • the body 51 of the shoe 50 is sized appropriately to fit snugly between two pairs of internal retaining walls 62a/b, 62c/d (62d not shown) of the bore 62 of the shoe guide 60.
  • the cavity 52 provided within the body 51 at the lower end 54 comprises slightly more than a half-cylindrical open-ended aperture sized to accommodate and retain the rotating roller 70.
  • the fuel delivery means 90 comprises a link 91, a bore 92 and a reservoir 93.
  • the side face 55a of the shoe 50 comprises the link 91 in the form of a recess cut into an upper portion of the side face 55a and open to the upper surface 53.
  • the link 91 comprises a short vertically disposed recess with a rounded bottom.
  • the link 91 substantially centrally located on the side face 55a between the two end faces 56a, 56b of the shoe 50.
  • an external opening 92a to the bore 92 is provided. Accordingly, the external opening 92a is set back relative to the side face 55a and is substantially centrally located on the side face 55a (between the two end faces 56a, 56b) of the shoe 50.
  • the bore 92 comprises a generally cylindrical, substantially uniform shaft that slopes downwardly between the external opening 92a and an internal opening 92b that is open to the cavity 52.
  • the bore 92 is substantially centrally located within the body 51 of the shoe 50 and adopts a planar path relative to the two end faces 56a, 56b.
  • the bore 92 terminates at the internal opening 92b. Due to the planar path taken by the bore 92, the internal opening 92b is also substantially centrally located within the cavity 52 relative to the two end faces 56a, 56b of the shoe 50.
  • the internal opening 92b is located in the cavity 52 at a radial position of approximately 45° relative to the pumping axis A-A'. This radial position advantageously avoids the internal opening 92b from being located under the part of the body 51 of the shoe 50 that is subject to significant load from the plunger 12.
  • one side face 55a of the shoe 50 is biased towards a corresponding internal wall 62a of the bore 62 of the shoe guide 60.
  • the direction of rotation of the roller 70 is clockwise and as such, the appropriate faces are side face 55a and internal wall 62a.
  • the area of the respective side face 55a and wall 62a that are affected is generally around the horizontal diameter of the cavity 52/ roller 70, e.g. perpendicular to the pumping axis A-A'.
  • the 45° radial position of the internal opening 92b also avoids being located in an area of the cavity 52 which is subjected to such significant side loads from the roller 70.
  • Alternative radial positions for the internal opening 92b are possible, whilst avoiding plunger and side loads and radial positions between approximately 15° and 75° are generally thought to be acceptable.
  • the cavity 52 provides the reservoir 93 in the form of an elongate, shallow recess or channel cut into the wall of the cavity 52.
  • the reservoir 93 comprises a substantially uniform profile therealong.
  • the reservoir 93 extends between the two end faces 56a, 56b of the shoe 50 within the cavity 52, but is closed to the end faces 56a, 56b, so as to form a pocket in the cavity 52.
  • the reservoir 53 is substantially centrally located relative to the two end faces 56a, 56b of the shoe 50 and extends across approximately 80% of the length of the cavity 52.
  • the reservoir 93 encompasses the internal opening 92b at an approximately central position, both longitudinally and laterally thereof.
  • the shoe comprises two fuel delivery means 90 each located substantially opposite one another on the shoe 50 in mirror image of one another.
  • the shoe 50 is disposed in the bore 62 such that the end faces 56 of the shoe 50 contact the internal walls 62c, 62d and the side faces 55a, 55b of the shoe 50 contact the internal walls 62a, 62b.
  • the link 91 of the fuel delivery means 90 is/ are located against internal walls 62a and/or 62b of the shoe guide 60.
  • the link 91 of the fuel delivery means 90 is open to the upper surface 53 of the shoe 50 at all times, the link 91 is able to be constantly flooded with fuel.
  • the fuel is able to travel through the link 91 to the external opening 92a of the bore 92, through the bore 92 and to the internal opening 92b.
  • the fuel Upon exiting the internal opening 92b, the fuel is distributed along the reservoir 93 and from there, the fuel is dragged into the clearance between the roller 70 and the cavity 52 of the shoe 50 by the rotation of the roller 70, to form/ replenish and maintain the hydrodynamic film therebetween.
  • the internal opening 92b and also the reservoir 93 are located within the cavity 52 in a radial position that minimises any load subjected by the roller 70 or the plunger 12, the flow of fuel into the clearance between the roller 70 and the shoe 50 is relatively unhindered.
  • the fuel delivery means 90 constantly supplies fuel to the interface between the roller 70 and the shoe 50 within the cavity 52, to promote the creation and maintenance of the lubricating hydrodynamic film.
  • the drivetrain assembly has a reduced tendency to seize and therefore, runs smoothly and efficiently during use, whilst minimising wear on the cam 80.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

The invention comprises a high pressure diesel fuel pump (1) comprising a pumping assembly (10) and a drive train assembly (20). The pumping assembly (10) comprises a plunger (12) extending from a pump head (11) along a pumping axis (A-A'). The drive train assembly (20) comprises a drive shaft and a cam (80) mounted thereon, a shoe (50) for contact with a lower end (12a) of the plunger (12), a roller (70) mounted within a cavity (52) of the shoe (50) for contact with the cam (80), and a shoe guide (60) mounted substantially between the cam (80) and the plunger (12) and adapted to receive the shoe (50) and roller (70) within a bore (62). The shoe (50) comprises at least one fuel delivery means (90) extending between an upper surface (53) of the shoe (50) and an unloaded region (52a) of the cavity (52).

Description

HIGH PRESSURE FUEL PUMP
BACKGROUND Technical Field
The present invention relates generally to the field of high pressure fuel pumps. More particularly, but not exclusively, the present invention concerns an adapted shoe for high pressure diesel fuel pumps.
Description of the Related Art
As shown in Figure 1, a typical high pressure diesel fuel pump adopting a roller-shoe arrangement as part of the drivetrain, comprises a plunger 2 extending from a hydraulic head 1 along a pumping axis A-A'. A plunger return spring 3 is seated around the head 1 and extends to the top of a spring seat 4 fixed near a lower end 2a of the plunger 2. The lower end 2a of the plunger 2 contacts an upper face of a shoe 5. The shoe 5 slides within an axial bore 6a (disposed along the pumping axis A-A') of a shoe guide 6. A roller 7 is mounted and retained within an aperture provided at a lower end of the shoe 5 and slides within the bore 6a with the shoe 5. The roller 7 contacts a surface of a cam 8, which is driven to rotate by a rotating driveshaft (not shown) to provide upward sliding motion along the pumping axis A- A'.
Fuel residing in the clearance between the roller 7 and the shoe 5 forms a hydrodynamic film therebetween. To maintain the film and prevent collapse, a constant supply of fuel into the clearance between the roller 7 and the shoe 5 is required.
If the interface between the roller 7 and the shoe 5 is not adequately lubricated, the arrangement has a tendency to seize during use. This, in turn, causes unnecessary wear on the cam 8 and disrupts smooth and efficient running of the drivetrain. Accordingly, the interface between the roller 7 and the shoe 5 requires a continuous supply of fuel during use. It is an object of the present invention to address one or more of the problems of known designs, particularly, but not exclusively in high pressure diesel fuel pumps.
Therefore, it is now desired to provide an improved drivetrain arrangement for a high pressure fuel pump that is capable of delivering increased lubrication to the roller-shoe interface. More particularly, it is desired to provide an improved shoe for a drivetrain arrangement of a high pressure diesel fuel pump.
SUMMARY OF THE INVENTION
In a first aspect of the present invention there is provided a high pressure diesel fuel pump comprising a pumping assembly and a drivetrain assembly, the pumping assembly comprising a plunger extending from a pump head along a pumping axis, the drivetrain assembly comprising a drive shaft and a cam mounted thereon within a cambox of a housing, a shoe for contact with a lower end of the plunger, a roller mounted within a cavity of the shoe for contact with the cam, and a shoe guide mounted within a guide chamber of the housing substantially between the cam and the plunger and adapted to receive the shoe and roller within a bore thereof, wherein the plunger is arranged for reciprocating linear movement along the pumping axis within a pumping chamber of the housing upon rotation of the cam, characterised in that the shoe comprises at least one fuel delivery means extending between an upper surface of the shoe and an unloaded region of the cavity.
With this arrangement, the fuel delivery means constantly supplies fuel to the interface between the roller and the shoe within the cavity, to promote the creation and maintenance of a hydrodynamic film. The drivetrain assembly has a reduced tendency to seize and therefore, runs smoothly and efficiently during use, whilst minimising wear on the cam.
By 'unloaded region of the cavity', what is meant is one or more segments of the cavity that is/are (a) not located directly under the plunger contact area, and (b) above the diametric line that lies laterally across the cavity. By 'plunger contact area' what is meant is a central 30% of the upper surface of the shoe.
Preferably, the fuel delivery means comprises a bore through a body of the shoe connecting the upper surface of the shoe with the cavity.
Preferably, the bore comprises an internal opening in a wall of the cavity in said unloaded region of the cavity. Preferably, the internal opening is located in a segment of the cavity wall extending between approximately 15° and approximately 75° from the pumping axis (in any direction). The internal opening may be located in a segment of the cavity wall extending between approximately 30° and approximately 60° from the pumping axis (in any direction). The internal opening may be located in a segment of the cavity wall extending between approximately 15° and approximately 30° from the pumping axis (in any direction). Alternatively, the internal opening may located in a segment of the cavity wall extending between approximately 60° and approximately 89° from the pumping axis (in any direction). The internal opening may be located at approximately 45° from the pumping axis (in any direction).
Preferably, the internal opening comprises a single aperture. Preferably, the internal opening is disposed approximately centrally along a length of the cavity. Preferably, the internal opening terminates in a reservoir provided in the cavity wall. Preferably, the reservoir comprises a recess cut into said cavity wall. Preferably, the recess extends longitudinally along substantially the length of the cavity wall. Preferably, the recess is a closed-ended channel, e.g. does not extend the full length of the cavity so as to be closed to end walls of the shoe. Preferably, the recess extends along approximately between 60% and 90% of the length of the cavity wall.
The bore may comprise an external opening in the upper surface of the shoe. Preferably however, the bore comprises an external opening into a link. By 'link' what is meant is a connecting passage between the external opening and the upper surface of the shoe.
The link may be provided internally of the body of the shoe. Preferably however, the link is provided in the side wall of the shoe, e.g. open to the side wall of the shoe. Preferably, the link comprises a hollow cut into said side face and open to the upper surface of the shoe. Preferably, the link is closed to a bottom end of the shoe. Most preferably, the link extends from the upper surface to just below the external opening of the bore.
Preferably, the bore is disposed on a downwardly sloping angle between external opening and the internal opening. Preferably, the angle comprises between approximately 15° and approximately 75° relative to the pumping axis. More preferably, the angle comprises between approximately 30° and approximately 60° relative to the pumping axis. Most preferably, the angle comprises approximately 45° relative to the pumping axis. The fuel delivery means may comprise a plurality of bores disposed in said body relative to one side wall of the shoe each connecting the upper surface of the shoe and the cavity. Each bore may therefore, comprise a separate link at the external opening and/or a separate reservoir at the internal opening. However, the plurality of bores may share a universal link and/ or a universal reservoir. The universal link may extend substantially along significant proportion of a side wall/ upper surface of the shoe to encompass all of the bores, e.g. between approximately 60% and 90% of the length of the side wall/ upper surface.
Alternatively, the fuel delivery means may comprise a primary bore connected to the upper surface of the shoe and a plurality of secondary bores branching off to the cavity therefrom. In this case, the plurality of bores may share a universal link at the external opening of the primary bore and a universal reservoir at the internal opening. Accordingly, the universal link may comprise a narrow hollow that is disposed substantially centrally on the side wall/ upper surface of the shoe. Where there are a plurality of bores, preferably, the bores are substantially equally spaced along a length of the body of the shoe.
Preferably, both the internal opening and the external opening of a specific bore are located at substantially the same distance from an end wall of the shoe, e.g. the plane of a bore relative to end walls of the shoe remains constant from the external opening to the internal opening.
Preferably, the shoe comprises fuel delivery means arranged to supply fuel to both sides of the cavity. Therefore, preferably, the shoe comprises one fuel delivery means commencing in one side face of the shoe terminating in one side of the cavity wall and a second fuel delivery means commencing in an opposing side face of the shoe terminating in an opposing side of the cavity wall. Preferably, the two fuel delivery means are disposed on opposite sides of the pumping axis. Preferably, the fuel delivery means are configured to be the same in both side faces. This not only brings balance to the shoe, but also enables the shoe to be used in two different orientations within the bore of the shoe guide.
Preferably, the pump is a diesel pump.
In a second aspect of the present invention there is provided a drivetrain assembly for a high pressure fuel pump comprising a drive shaft and a cam mounted thereon within a cambox of a housing, a shoe for contact with a lower end of the plunger, a roller mounted within a cavity of the shoe for contact with the cam, and a shoe guide mounted within a guide chamber of the housing substantially between the cam and the plunger and adapted to receive the shoe and roller within a bore thereof, characterised in that the shoe comprises at least one fuel delivery means extending between an upper surface of the shoe and an unloaded region of the cavity.
It will be appreciated that the preferred features described in relation to the first aspect of the invention also apply to the second aspect of the invention.
In a third aspect of the present invention there is provided a shoe for a drivetrain assembly of a high pressure fuel pump comprising a cavity for a roller to be mounted therein, characterised in that the shoe comprises at least one fuel delivery means extending between an upper surface of the shoe and an unloaded region of the cavity.
It will be appreciated that the preferred features described in relation to the first aspect of the invention also apply to the third aspect of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
For a better understanding of the invention, and to show how exemplary embodiments may be carried into effect, reference will now be made to the accompanying drawings in which:
Figure 1 is a cross-sectional side view of a high pressure diesel fuel pump according to an embodiment of the invention;
Figure 2 is cross-sectional exploded side view of the pump of Figure 1; Figure 3 is a schematic cross-sectional end view of the shoe for a drivetrain assembly of a high pressure fuel pump according to Figure 1;
Figure 4 is a schematic perspective side view of the shoe for a drivetrain assembly of a high pressure fuel pump according to a different embodiment of the invention; Figure 5 is a schematic cross-sectional end view of the shoe for a drivetrain assembly of a high pressure fuel pump according to Figure 4;
Figure 6 is a schematic perspective side-end view of a shoe for a drivetrain assembly of a high pressure fuel pump according to Figure 4; and
Figure 7 is a schematic perspective bottom view of the shoe for a drivetrain assembly of a high pressure fuel pump according to Figure 4.
DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS
One embodiment of the invention is shown in Figures 1 to 3. A high pressure diesel fuel pump 1 comprises a pumping assembly 10 and a drivetrain assembly 20, the pumping assembly comprising a plunger 12 extending from a pump head 11 along a pumping axis A-A', the drivetrain assembly 20 comprising a drive shaft and a cam 80 mounted thereon within a cambox 21 of a housing 22, a shoe 50 for contact with a lower end 12a of the plunger 12, a roller 70 mounted within a cavity 52 of the shoe 50 for contact with the cam 80, and a shoe guide 60 mounted within a guide chamber 23 of the housing 22 substantially between the cam 80 and the plunger 12 and adapted to receive the shoe 50 and roller 70 within a bore 62 thereof, wherein the plunger 12 is arranged for reciprocating linear movement along the pumping axis A-A' within a pumping chamber 24 of the housing 22 upon rotation of the cam 80, characterised in that the shoe 50 comprises at least one fuel delivery means 90 extending between an upper surface 53 of the shoe 50 and an unloaded region 52a of the cavity 52. The shoe 50 comprises a generally cu boidal body 51 with the upper face 53 and a lower face 54. The cavity 52 for the roller 70 is provided in the bottom face 54, whilst the upper face 53 contacts the lower end 12a of the plunger 12. Between the upper face 53 and the lower face 54, the body 51 comprises a pair of opposing side faces 55a, 55b and a pair of opposing end faces 56a, 56b. The cavity 52 for the roller 70 extends between the pair of end faces 56a, 56b and is open to both. The side faces 55a, 55b are substantially closed to the cavity 52. The side faces 55a, 55b are elongate compared with the end faces 56a, 56b. At the junction between the side faces 55a, 55b and the end faces 56a, 56b, the body 51 comprises blunted corners 51a. The body 51 of the shoe 50 is sized appropriately to fit snugly between two pairs of internal retaining walls 62a/b, 62c/d (62d not shown) of the bore 62 of the shoe guide 60.
The cavity 52 provided within the body 51 at the lower end 54 comprises slightly more than a half-cylindrical open-ended aperture sized to accommodate and retain the rotating roller 70.
The fuel delivery means 90 comprises a link 91, a bore 92 and a reservoir 93.
The side face 55a of the shoe 50 comprises the link 91 in the form of a recess cut into an upper portion of the side face 55a and open to the upper surface 53. The link 91 comprises a short vertically disposed recess with a rounded bottom. The link 91 substantially centrally located on the side face 55a between the two end faces 56a, 56b of the shoe 50.
Close to the rounded bottom of the link 91, an external opening 92a to the bore 92 is provided. Accordingly, the external opening 92a is set back relative to the side face 55a and is substantially centrally located on the side face 55a (between the two end faces 56a, 56b) of the shoe 50.
The bore 92 comprises a generally cylindrical, substantially uniform shaft that slopes downwardly between the external opening 92a and an internal opening 92b that is open to the cavity 52. The bore 92 is substantially centrally located within the body 51 of the shoe 50 and adopts a planar path relative to the two end faces 56a, 56b.
The bore 92 terminates at the internal opening 92b. Due to the planar path taken by the bore 92, the internal opening 92b is also substantially centrally located within the cavity 52 relative to the two end faces 56a, 56b of the shoe 50.
The internal opening 92b is located in the cavity 52 at a radial position of approximately 45° relative to the pumping axis A-A'. This radial position advantageously avoids the internal opening 92b from being located under the part of the body 51 of the shoe 50 that is subject to significant load from the plunger 12. During rotation of the roller 70 in the cavity 52 in a direction D, one side face 55a of the shoe 50 is biased towards a corresponding internal wall 62a of the bore 62 of the shoe guide 60. In the Figures 1 to 3, the direction of rotation of the roller 70 is clockwise and as such, the appropriate faces are side face 55a and internal wall 62a. The area of the respective side face 55a and wall 62a that are affected is generally around the horizontal diameter of the cavity 52/ roller 70, e.g. perpendicular to the pumping axis A-A'. However, the 45° radial position of the internal opening 92b also avoids being located in an area of the cavity 52 which is subjected to such significant side loads from the roller 70. Alternative radial positions for the internal opening 92b are possible, whilst avoiding plunger and side loads and radial positions between approximately 15° and 75° are generally thought to be acceptable.
It is to be appreciated, however, that the opposite side face 55b of the shoe 50 and opposite internal wall 62b of the guide 60 would be subjected to the abovementioned side loads should the direction of rotation D be reversed (anti-clockwise), in which case, the fuel delivery means 90 would be provided on the opposite side face 55b of the shoe 50.
The cavity 52 provides the reservoir 93 in the form of an elongate, shallow recess or channel cut into the wall of the cavity 52. The reservoir 93 comprises a substantially uniform profile therealong. The reservoir 93 extends between the two end faces 56a, 56b of the shoe 50 within the cavity 52, but is closed to the end faces 56a, 56b, so as to form a pocket in the cavity 52. The reservoir 53 is substantially centrally located relative to the two end faces 56a, 56b of the shoe 50 and extends across approximately 80% of the length of the cavity 52. The reservoir 93 encompasses the internal opening 92b at an approximately central position, both longitudinally and laterally thereof.
In an alternative embodiment as shown in Figures 4 to 6, the shoe comprises two fuel delivery means 90 each located substantially opposite one another on the shoe 50 in mirror image of one another. During assembly, the shoe 50 is disposed in the bore 62 such that the end faces 56 of the shoe 50 contact the internal walls 62c, 62d and the side faces 55a, 55b of the shoe 50 contact the internal walls 62a, 62b. Accordingly, the link 91 of the fuel delivery means 90 is/ are located against internal walls 62a and/or 62b of the shoe guide 60. In use, since the link 91 of the fuel delivery means 90 is open to the upper surface 53 of the shoe 50 at all times, the link 91 is able to be constantly flooded with fuel. The fuel is able to travel through the link 91 to the external opening 92a of the bore 92, through the bore 92 and to the internal opening 92b. Upon exiting the internal opening 92b, the fuel is distributed along the reservoir 93 and from there, the fuel is dragged into the clearance between the roller 70 and the cavity 52 of the shoe 50 by the rotation of the roller 70, to form/ replenish and maintain the hydrodynamic film therebetween.
Since the internal opening 92b and also the reservoir 93 are located within the cavity 52 in a radial position that minimises any load subjected by the roller 70 or the plunger 12, the flow of fuel into the clearance between the roller 70 and the shoe 50 is relatively unhindered.
Advantageously, with the invention as described, the fuel delivery means 90 constantly supplies fuel to the interface between the roller 70 and the shoe 50 within the cavity 52, to promote the creation and maintenance of the lubricating hydrodynamic film. The drivetrain assembly has a reduced tendency to seize and therefore, runs smoothly and efficiently during use, whilst minimising wear on the cam 80.
Although a few preferred embodiments have been shown and described, it will be appreciated by those skilled in the art that various changes and modifications might be made without departing from the scope of the invention, as defined in the appended claims.

Claims

A high pressure diesel fuel pump (1) comprising a pumping assembly (10) and a drivetrain assembly (20), the pumping assembly (10) comprising a plunger (12) extending from a pump head (11) along a pumping axis (Α-Α'), the drivetrain assembly (20) comprising a drive shaft and a cam (80) mounted thereon within a cambox (21) of a housing (22), a shoe (50) for contact with a lower end (12a) of the plunger (12), a roller (70) mounted within a cavity (52) of the shoe (50) for contact with the cam (80), and a shoe guide (60) mounted within a guide chamber (23) of the housing (22) substantially between the cam (80) and the plunger (12) and adapted to receive the shoe (50) and roller (70) within a bore (62) thereof, wherein the plunger (12) is arranged for reciprocating linear movement along the pumping axis (Α-Α') within a pumping chamber (24) of the housing (22) upon rotation of the cam (80), characterised in that the shoe (50) comprises at least one fuel delivery means (90) extending between an upper surface (53) of the shoe (50) and an unloaded region (52a) of the cavity (52),
wherein the fuel delivery means (90) comprises a bore (92) through a body (51) of the shoe (50) connecting the upper surface (53) of the shoe (50) with the cavity (52), wherein the bore (92) comprises an external opening (92a) into a link (91), wherein the link (91) is provided in the side wall (55a, 55b) of the shoe (50) and open to the side wall (55a, 55b) of the shoe (50).
The pump (1) according to claim 1, wherein the bore (92) comprises an internal opening (92b) in a wall of the cavity (52) in said unloaded region (52a) of the cavity (52).
The pump (1) according to claim 2, wherein the internal opening (92b) is located in a segment of the cavity wall extending between approximately 15° and approximately 75° from the pumping axis (Α-Α') (in any direction).
The pump (1) according to anyone of claims 2 or 3, wherein the internal opening (92b) comprises a single aperture disposed approximately centrally along a length of the cavity (52).
The pump (1) according to any one of claims 2 to 4, wherein the internal opening (92b) terminates in a reservoir (93) provided in the cavity wall.
6. The pump (1) according to claim 5, wherein the reservoir (53) comprises a recess cut into said cavity wall extending longitudinally along substantially the length of the cavity wall.
7. The pump (1) according to claim 6, wherein the recess extends along approximately between 60% and 90% of the length of the cavity wall.
8. The pump (1) according to claim 1, wherein the link (91) comprises a hollow cut into said side face (55a, 55b) and open to the upper surface (53) of the shoe (50).
9. The pump (1) according to claim 8, wherein the link (91) extends from the upper surface (53) to just below the external opening (92a) of the bore (92).
10. The pump (1) according to any one of claims 8 or 9, wherein the bore (92) is disposed on a downwardly sloping angle between external opening (92a) and the internal opening (92b) at an angle comprising between approximately 15° and approximately 75° relative to the pumping axis (Α-Α').
11. The pump (1) according to any one of claims 1 to 10, wherein the shoe (50) comprises fuel delivery means (90) arranged to supply fuel to both sides of the cavity (52) comprising one fuel delivery means (90) commencing in one side face (55a) of the shoe (50) terminating in one side of the cavity wall and a second fuel delivery means (90) commencing in an opposing side face (55b) of the shoe (50) terminating in an opposing side of the cavity wall.
12. The pump (1) according to claim 11, wherein the two fuel delivery means (90) are disposed on opposite sides of the pumping axis (Α-Α').
EP16782287.3A 2015-10-27 2016-10-19 High pressure fuel pump Active EP3368766B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1518964.0A GB201518964D0 (en) 2015-10-27 2015-10-27 High pressure fuel pump
PCT/EP2016/075104 WO2017072006A1 (en) 2015-10-27 2016-10-19 High pressure fuel pump

Publications (2)

Publication Number Publication Date
EP3368766A1 true EP3368766A1 (en) 2018-09-05
EP3368766B1 EP3368766B1 (en) 2021-04-07

Family

ID=55130272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16782287.3A Active EP3368766B1 (en) 2015-10-27 2016-10-19 High pressure fuel pump

Country Status (3)

Country Link
EP (1) EP3368766B1 (en)
GB (1) GB201518964D0 (en)
WO (1) WO2017072006A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2577677B (en) * 2018-09-21 2021-06-23 Delphi Tech Ip Ltd High pressure pump shoe
IT201800011033A1 (en) * 2018-12-12 2020-06-12 Bosch Gmbh Robert ROLLER PIN FOR A FUEL PUMP ASSEMBLY TO AN INTERNAL COMBUSTION ENGINE AND PUMP ASSEMBLY INCLUDING THIS ROLLER PIN
EP4055267A4 (en) * 2019-12-19 2023-08-02 Cummins, Inc. Tappet roller assembly

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0571441A (en) * 1991-09-11 1993-03-23 Nippondenso Co Ltd Fuel injector
JPH05180116A (en) * 1991-12-25 1993-07-20 Nippondenso Co Ltd Fuel injection pump
JPH05332222A (en) * 1992-05-27 1993-12-14 Nippondenso Co Ltd Fuel injection pump
JP2001221131A (en) * 2000-02-07 2001-08-17 Bosch Automotive Systems Corp Mechanism for lubricating tappet for fuel injection pump
DE102009029297A1 (en) * 2009-09-09 2011-03-10 Robert Bosch Gmbh Piston pump, particularly high-pressure pump for fuel injection device of internal combustion engine, comprises pump piston, which is adjustably guided to shaft in radial manner
DE102010030202A1 (en) * 2010-06-17 2011-12-22 Robert Bosch Gmbh Plunger assembly for pump, particularly high pressure pump for fuel injection unit of internal combustion engine for fuel delivery, has plunger body for movable guiding plunger assembly and supporting element, in which roller is supported
DE102010030498A1 (en) * 2010-06-24 2011-12-29 Robert Bosch Gmbh Pump, in particular high-pressure fuel pump
DE102011086703A1 (en) * 2011-11-21 2013-05-23 Robert Bosch Gmbh high pressure pump
DE102012223413A1 (en) * 2012-12-17 2014-06-18 Robert Bosch Gmbh Roller tappet for a pump, in particular high-pressure fuel pump, and pump with roller tappet
KR101439038B1 (en) * 2013-06-26 2014-09-05 현대자동차주식회사 Lubrication apparatus of high pressure pump for common rail system

Also Published As

Publication number Publication date
GB201518964D0 (en) 2015-12-09
EP3368766B1 (en) 2021-04-07
WO2017072006A1 (en) 2017-05-04

Similar Documents

Publication Publication Date Title
US9567960B2 (en) Fuel pump tappet assembly
US9347445B2 (en) Lubrication apparatus of high pressure pump for common rail system
EP2657505A1 (en) High pressure fuel pump assembly
EP3368766B1 (en) High pressure fuel pump
US8840307B2 (en) Connecting rod bearing
US11053929B2 (en) Variable displacement pump
EP3842651B1 (en) Pump body and compressor with pump body
US3131785A (en) Machine bearing lubrication apparatus
US7975806B2 (en) Lubrication system for a part in an internal combustion system
KR102096198B1 (en) Fuel injection pump
US3541892A (en) Control means for the control of the piston stroke of a piston pump
US8696209B2 (en) Connecting rod bearing of internal combustion engine
US20180128226A1 (en) An oil lubricated common rail diesel pump
US9441505B1 (en) Roller lifter with improved oil injection port and supply groove
CN110714866A (en) Tappet and fuel injection pump including the same
CN106150806A (en) Plunger displacement pump and high pressure fuel pump
BR112016019591B1 (en) piston ring
JP4894802B2 (en) Fuel injection pump
JP6565811B2 (en) Connecting rod
US8863638B2 (en) Bushing assisted cam pin
JP5733280B2 (en) Lubricant supply mechanism for linear guide, linear guide having the same, and method for supplying lubricant for linear guide
US8668051B2 (en) Lubricating device for linear transmission mechanism
GB2543500A (en) High pressure fuel pump
JP6712519B2 (en) Roller lifter
JP6208594B2 (en) Slide bearing and lubricating oil supply mechanism having the same

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20180528

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20200218

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

RIC1 Information provided on ipc code assigned before grant

Ipc: F02M 59/10 20060101ALI20201106BHEP

Ipc: F04B 53/18 20060101ALI20201106BHEP

Ipc: F04B 1/0426 20200101ALI20201106BHEP

Ipc: F02M 63/00 20060101AFI20201106BHEP

INTG Intention to grant announced

Effective date: 20201201

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1379998

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210415

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602016055705

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20210407

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1379998

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210407

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210707

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210809

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210708

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210807

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602016055705

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20220110

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210807

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20211031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211019

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211031

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211019

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20161019

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230327

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 602016055705

Country of ref document: DE

Owner name: PHINIA DELPHI LUXEMBOURG SARL, LU

Free format text: FORMER OWNER: DELPHI TECHNOLOGIES IP LIMITED, ST. MICHAEL, BB

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20240725 AND 20240731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210407

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20250911

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20250912

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20250912

Year of fee payment: 10