GB2568674A - High pressure fuel pump - Google Patents

High pressure fuel pump Download PDF

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Publication number
GB2568674A
GB2568674A GB1719215.4A GB201719215A GB2568674A GB 2568674 A GB2568674 A GB 2568674A GB 201719215 A GB201719215 A GB 201719215A GB 2568674 A GB2568674 A GB 2568674A
Authority
GB
United Kingdom
Prior art keywords
pump
camshaft
crankcase
arrangement
bore
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
GB1719215.4A
Other versions
GB201719215D0 (en
GB2568674B (en
Inventor
J Lane David
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 Technologies IP Ltd
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
Priority to GB1719215.4A priority Critical patent/GB2568674B/en
Publication of GB201719215D0 publication Critical patent/GB201719215D0/en
Publication of GB2568674A publication Critical patent/GB2568674A/en
Application granted granted Critical
Publication of GB2568674B publication Critical patent/GB2568674B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K25/00—Auxiliary drives
    • B60K25/02—Auxiliary drives directly from an engine shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
    • 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
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/043—Arrangements for driving reciprocating piston-type pumps
    • 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
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • F02M39/02—Arrangements of fuel-injection apparatus to facilitate the driving of pumps; Arrangements of fuel-injection pumps; Pump drives
    • 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
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • 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
    • F04B1/0413—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
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F04B11/0091—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using a special shape of fluid pass, e.g. throttles, ducts
    • 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
    • F04B53/006—Crankshafts
    • 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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • F04B9/042—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being 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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms

Landscapes

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

Abstract

An arrangement 10 of a fuel pump 12 on the crankcase 14 of an internal combustion engine is disclosed. The pump has a housing 22 which encloses a camshaft bore 26, in which a camshaft 30 is arranged, and a compression bore 28 which guides a piston 44. The crank housing 22 encloses an inner space S14 and is provided with an opening 18 in which part of the pump 20 is engaged. An end of the camshaft 30F extends through the opening for connection to a driving means. The arrangement defines a flow path F which allows fluid communication joining the piston bore 28 to camshaft bore via the internal space of the crankcase S14. The arrangement allows pressure to balance either side of the cam follower and minimises the number of manufacturing steps. The invention extends to a fuel pump adapted to be part of the arrangement, which may be a diesel pump.

Description

The present invention relates to a high pressure fuel pump wherein a camshaft cooperates with a piston to pressurise fuel in a compression chamber, the invention being about balancing the pressures on both side of a cam follower.
BACKGROUND OF THE INVENTION
In a high pressure fuel pump of a fuelling equipment of an internal combustion engine, a camshaft rotates in a camshaft bore and urges via a cam follower a piston to reciprocal displacements in a compression bore. Said cam follower is slidably guided at an end of said compression bore preventing fluid transfer between the compression bore and the camshaft bore thus generating pressure variations and pressure spikes within the pump and the equipment. Pressure balancing means have been developed such as external piping joining said two bores or, holes running within the pump housing and made during the foundry process. Said solutions are complex and expensive since requiring long and difficult additional manufacturing steps.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to resolve the above mentioned problems in providing an arrangement of a fuel pump on the crankcase of an internal combustion engine.
The pump has a housing enclosing a camshaft bore wherein a camshaft arranged between bearings is rotatable about a camshaft axis and, a compression bore wherein a piston is guided along a compression axis.
The crankcase has a housing enclosing an crankcase inner space, said crankcase housing being provided with an opening in which part of the pump housing is engaged, a front end of the camshaft extending through said opening for enabling connection of driving means.
The arrangement defines a fluid communication joining the compression bore to the camshaft bore via the crankcase inner space.
More precisely, said fluid communication comprises a first portion extending between the compression bore and the crankcase inner space and, a second portion extending between the crankcase inner space and the camshaft bore.
In an embodiment, the first portion comprises a first hole entirely extending in a front wall of the pump housing, said first hole opening at an inner end in the compression bore and at an outer end in said part of the pump engaged in the crankcase opening.
In another embodiment, the first portion comprises a first hole comprising a pump portion extending in the pump housing and a crankcase portion extending in a wall of the crankcase.
Whichever embodiment is, said first portion may comprise a plurality of first holes.
The second portion of the fluid communication comprises second hole extending through the camshaft and, more precisely, through a portion of the camshaft forming a front wheel defining a front bearing.
Said second portion of the fluid communication may comprise a plurality of second holes extending through the camshaft.
In another alternative, the second portion of the fluid communication may be provided through the front bearing, said front bearing being, for instance, a roller bearing and said second portion of the fluid communication being provided between rollers.
The application extends to a high pressure fuel pump adapted to be part of an arrangement as described above, the pump having a housing adapted to be fixed against a wall of crankcase of an internal combustion engine.
Said high pressure pump may be a diesel pump.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention is now described by way of example with reference to the accompanying drawings in which:
Figures 1 and 2 are axial sections of a pump arrangement as per a first and a second embodiment of the invention.
Figures 3 and 4 detail two construction alternatives on the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Figures 1 and 2 show an arrangement 10 of a fuel pump 12 fixed on a crankcase 14, said arrangement being part of a fuel injection equipment of an internal combustion engine wherein fuel is pressurised in the pump 12 to several thousands of bars prior to be flown toward fuel injectors.
The example chosen to illustrate the invention is a diesel pump pressure, said pump 12 having a rear side 12R (left of the figures) opposed to a front side 12F (right of the figure) fixed to a front wall 16 of the crankcase 14. For positioning and fixing said pump 12 on said crankcase 14, said crankcase front wall 16 is provided with an opening 18 in which is complementary engaged a cylindrical protrusion 20 of the front side 12F of the pump 12 and, as sketched on the figures, said opening 18 opens into a crankcase inner space S14 normally filled with lubrication oil and wherein, in use, are arranged pump driving means such as gears. .
More precisely, the pump 12 has a housing 22 with peripheral walls 24 surrounding a T-shaped inner space S12 defining a camshaft bore 26, extending along a camshaft axis X, in which perpendicularly opens a compression bore 28, extending along a compression axis Z. In the camshaft bore 26 is arranged a camshaft 30 rotatable between a rear bearing 32 defined by a camshaft rear wheel which peripheral rear journal is complementary engaged in a rear bushing placed in a recess of a pump rear wall and, a front rear bearing 34 defined by a camshaft front wheel 34F which peripheral front journal rotates in a front bushing arranged in a cylindrical opening of a pump front wall 24F. As shown, the camshaft bore 26 extends through the pump front wall 24F and, a front plate 36 is screwed to said front wall 24F before said bore opening, said plate 36 having a thick washer-like shape provided with a central opening 38 smaller than the camshaft bore opening.
Between said rear and front 34F wheels, the camshaft is thinner and it comprises a cam 40 facing the compression bore 28 opening. The camshaft 30 further comprises a front end 30F frontwardly extending beyond the front bearing 34 through said front plate opening 38 outside the pump housing 22, said front end 30F protruding in said the crankcase inner space S14 for complementary receiving said driving means.
In the pump is further arranged a piston 44 slidably guided in the compression bore 28, said piston 44 extending between a head 46 and a foot 48, the piston head 46 being engaged in a compression head member 50 inserted in the compression bore. Said compression head member 50 is provided with a piston guiding bore adjusted to the piston diameter, an upper end of said guiding bore defining a compression chamber, the piston head 46 also partially defining said compression chamber wherein the fuel is pressurised. At the opposite end of the piston, the piston foot 48 cooperates with a cam follower 54 slidably adjusted and guided in an inner end portion of the compression bore, said inner end being proximal to the opening in the camshaft bore. The follower 54 is adjusted in the compression bore 28 with a thin functional clearance enabling guiding and sliding. The follower 54 is downwardly urged in permanent contact against the cam 40 by a spring arranged in the compression bore and compressed between said follower 54 and said compression head member 50.
Opposite to its opening in the camshaft bore, an inlet valve assembly coaxially arranged with the compression bore plugs the outer opening of the compression bore, said inlet valve assembly comprising a valve member, a control actuator and an electric connector.
In use, the pressures in the two bores vary because of the reciprocal displacements of the cam follower 54, the functional clearance not being large enough to enable important fluid transfer between the bores. To balance the pressures between the compression bore 28 and the camshaft bore 26, a large fluid communication F is provided between said bores and the crankcase inner space S14. Said fluid communication F comprises a first portion Fl defined by a first hole 58 joining the compression bore 28 to the crankcase inner space S14 and, a second portion F2 defined by a second hole 60 joining the crankcase inner space S14 to the camshaft bore 26.
In a first embodiment of the arrangement 10 shown on figure 1, the first hole 58 entirely extends through the pump housing front wall 24F, opening at an inner end in the compression bore and, at the opposite outer end in the cylindrical protrusion 20 of the front side 12F of the pump 12 inside said crankcase front wall opening 18. Said first hole 58 may be drilled angled relative to the camshaft axis
X, as it is sketched on figure 1 or alternatively, it can be drilled parallel to said camshaft axis X.
In a second embodiment of the arrangement 10, shown on figure 2, the first hole 58 extends through the wall of the pump and through the wall of the crankcase thus comprising a pump portion 58P and a complementary crankcase portion 58C.
Moreover, said first portion Fl of the fluid communication can comprise one hole 58 or a plurality of holes 58 drilled through the pump front wall 24F or through the pump wall and the crankcase wall, only one being sketched on the figures.
The second hole 60 parallel to the camshaft axis X is drilled through the camshaft front wheel 34F. Said second hole 60 can be circular or oblong as shown in the examples of figures 3 and 4 or having any other shape. Also, said second portion F2 of the fluid communication can comprise one hole 60 or a plurality of holes 60 drilled through the front wheel 34F, only one being sketched on the figures.
In an alternative not shown, the second portion F2 of the fluid communication may be provided through the front bearing itself. For instance if said front bearing is a roller bearing, said fluid communication F2 is provided without any additional drilling as the fluid may pass between the rollers.
LIST OF REFERENCES
X axis
z axis
S12 inner space of the pump
S14 inner space of the crankcase
F fluid communication
Fl first portion of the fluid communication
F2 second portion of the fluid communication
10 arrangement
12 pump
12R rear side of the pump
12F front side of the pump crankcase front wall of the crankcase opening in the wall of the crankcase cylindrical protrusion of the pump front housing of the pump wall of the housing of the pump
24F front wall of the pump housing camshaft bore compression bore camshaft
OF front end protrusion of the camshaft rear bearing front bearing
34F front journal front plate opening in the front plate cam piston head of the piston foot of the piston compression head member cam follower first hole
58P pump portion of the first hole
58C crankcase portion of the first hole second hole

Claims (11)

CLAIMS:
1. Arrangement (10) of a fuel pump (12) on the crankcase (14) of an internal combustion engine, the pump (12) having a housing (22) enclosing a camshaft bore (26) wherein a camshaft (30) arranged between bearings (32, 34) is rotatable about a camshaft axis (X) and, a compression bore (28) wherein a piston (44) is guided along a compression axis (Z) and, the crankcase (14) having a housing enclosing an crankcase inner space (SI4), said crankcase housing being provided with an opening (18) in which part (20) of the pump housing is engaged, a front end of the camshaft (30F) extending through said opening (18) for enabling connection of driving means and wherein, the arrangement (10) defines a fluid communication (F) joining the compression bore (28) to the camshaft bore (26) via the crankcase inner space (S14).
2. Arrangement (10) as claimed in the preceding claim wherein said fluid communication (F) comprises a first portion (Fl) extending between the compression bore (28) and the crankcase inner space (S14) and, a second portion (F2) extending between the crankcase inner space (S14) and the camshaft bore (26).
3. Arrangement (10) as claimed in claim 2 wherein said first portion (Fl) comprises a first hole (58) entirely extending in a front wall (24F) of the pump housing, said first hole (58) opening at an inner end in the compression bore (28) and, at an outer end in said part (20) of the pump engaged in the crankcase opening (18).
4. Arrangement (10) as claimed in claim 2 wherein said first portion (Fl) comprises a first hole (58) comprising a pump portion (58P) extending in the pump housing and a crankcase portion (58C) extending in a wall (16) of the crankcase.
5. Arrangement (10) as claimed in any one of the claims 3 or 4 wherein said first portion (Fl) comprises a plurality of first holes (58).
6. Arrangement (10) as claimed in any one of the claims 2 to 5 wherein said second portion (F2) of the fluid communication comprises second hole (60) extending through the camshaft.
7. Arrangement (10) as claimed in claim 6 wherein said second portion (F2) of the fluid communication comprises a plurality of second holes (60) extending through the camshaft.
8. Arrangement (10) as claimed as in any one of the claims 2 to 5 wherein said second portion (F2) of the fluid communication is provided through the front bearing (34).
9. Arrangement (10) as claimed in claim 8 wherein said front bearing (34) is a roller bearing, said second portion (F2) of the fluid communication being provided between rollers.
10. High pressure fuel pump (12) adapted to be part of an arrangement (10) as claimed as in any one of the preceding claims, the pump (12) having a housing adapted to be fixed against a wall of crankcase of an internal combustion engine.
11.
High pressure diesel pump (12) as claimed as in claim 10.
GB1719215.4A 2017-11-20 2017-11-20 High pressure fuel pump Active GB2568674B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1719215.4A GB2568674B (en) 2017-11-20 2017-11-20 High pressure fuel pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1719215.4A GB2568674B (en) 2017-11-20 2017-11-20 High pressure fuel pump

Publications (3)

Publication Number Publication Date
GB201719215D0 GB201719215D0 (en) 2018-01-03
GB2568674A true GB2568674A (en) 2019-05-29
GB2568674B GB2568674B (en) 2020-03-25

Family

ID=60805426

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1719215.4A Active GB2568674B (en) 2017-11-20 2017-11-20 High pressure fuel pump

Country Status (1)

Country Link
GB (1) GB2568674B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040105761A1 (en) * 2001-12-13 2004-06-03 Robert Bosch Gmbh High-pressure fuel pump with integrated blocking-vane prefeed pump
DE102009003094A1 (en) * 2009-05-14 2010-11-18 Robert Bosch Gmbh High-pressure fuel pump
EP2657505A1 (en) * 2012-04-25 2013-10-30 Delphi Technologies Holding S.à.r.l. High pressure fuel pump assembly
DE102012216594A1 (en) * 2012-09-18 2014-03-20 Robert Bosch Gmbh Internal combustion engine with a crankcase
US20160108875A1 (en) * 2013-05-29 2016-04-21 Robert Bosch Gmbh High pressure pump for a fuel injection system
US20160215663A1 (en) * 2015-01-22 2016-07-28 Denso Corporation Lubricating device for internal combustion engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040105761A1 (en) * 2001-12-13 2004-06-03 Robert Bosch Gmbh High-pressure fuel pump with integrated blocking-vane prefeed pump
DE102009003094A1 (en) * 2009-05-14 2010-11-18 Robert Bosch Gmbh High-pressure fuel pump
EP2657505A1 (en) * 2012-04-25 2013-10-30 Delphi Technologies Holding S.à.r.l. High pressure fuel pump assembly
DE102012216594A1 (en) * 2012-09-18 2014-03-20 Robert Bosch Gmbh Internal combustion engine with a crankcase
US20160108875A1 (en) * 2013-05-29 2016-04-21 Robert Bosch Gmbh High pressure pump for a fuel injection system
US20160215663A1 (en) * 2015-01-22 2016-07-28 Denso Corporation Lubricating device for internal combustion engine

Also Published As

Publication number Publication date
GB201719215D0 (en) 2018-01-03
GB2568674B (en) 2020-03-25

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Owner name: DELPHI TECHNOLOGIES IP LIMITED

Free format text: FORMER OWNER: DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG S.A.R.L.