GB2559148A - Driveshaft with transfer pump adapter - Google Patents

Driveshaft with transfer pump adapter Download PDF

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Publication number
GB2559148A
GB2559148A GB1701321.0A GB201701321A GB2559148A GB 2559148 A GB2559148 A GB 2559148A GB 201701321 A GB201701321 A GB 201701321A GB 2559148 A GB2559148 A GB 2559148A
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GB
United Kingdom
Prior art keywords
pumping system
adapter
feed pump
main shaft
camshaft
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
GB1701321.0A
Other versions
GB201701321D0 (en
GB2559148B (en
Inventor
Wade Ben
Hennig Christian
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
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Priority to GB1701321.0A priority Critical patent/GB2559148B/en
Publication of GB201701321D0 publication Critical patent/GB201701321D0/en
Publication of GB2559148A publication Critical patent/GB2559148A/en
Application granted granted Critical
Publication of GB2559148B publication Critical patent/GB2559148B/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
    • 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
    • F02M37/18—Feeding by means of driven pumps characterised by provision of main and auxiliary pumps
    • 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
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/08—Combinations of two or more pumps the pumps being of different types
    • F04B23/10—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement 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
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • F02M39/005—Arrangements of fuel feed-pumps with respect to fuel injection 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
    • 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
    • F02M59/02—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
    • 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
    • F02M59/445—Selection of particular materials
    • 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
    • F02M59/48—Assembling; Disassembling; Replacing
    • 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
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/08—Combinations of two or more pumps the pumps being of different types
    • F04B23/10—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type
    • F04B23/103—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type being a radial piston pump
    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0094—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 crankshaft
    • 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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/005—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of dissimilar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8061—Fuel injection apparatus manufacture, repair or assembly involving press-fit, i.e. interference or friction fit
    • 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
    • F02M2200/90—Selection of particular materials
    • F02M2200/9053—Metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/20—Fluid liquid, i.e. incompressible
    • F04C2210/203—Fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/60—Shafts

Abstract

A pumping system 10 of i.c. engine fuel injection equipment comprises a feed pump 14 and a high pressure pump 12 in a body 16 which houses a front bearing 24 and a rear bearing 20 between which a camshaft 28 is arranged for urging a piston 44 of the high pressure pump 12 and driving a rotor 40 of the feed pump 14. The camshaft 28 is a composite shaft comprising a main shaft member 46 having a cam 30 and a driveshaft adapter 48 complementarily engaged in the rotor 40 of the feed pump 14. The adapter 48 may have a cylindrical male portion 52 which is fixed, eg press-fitted, welded, or threaded, in a recess 50 in the rear end of the camshaft 28, and a rotor interface, eg spline, end 54 to engage the rotor 40 of the feed pump 14. The material of the main shaft member 46 may be different from that of the adapter 48, eg the adapter 48 may be of higher grade steel.

Description

(54) Title of the Invention: Driveshaft with transfer pump adapter
Abstract Title: Fuel injection pumping system with camshaft having a transfer pump adapter (57) A pumping system 10 of i.e. engine fuel injection equipment comprises a feed pump 14 and a high pressure pump 12 in a body 16 which houses a front bearing 24 and a rear bearing 20 between which a camshaft 28 is arranged for urging a piston 44 of the high pressure pump 12 and driving a rotor 40 of the feed pump 14. The camshaft 28 is a composite shaft comprising a main shaft member 46 having a cam 30 and a driveshaft adapter 48 complementarily engaged in the rotor 40 of the feed pump 14. The adapter 48 may have a cylindrical male portion 52 which is fixed, eg press-fitted, welded, or threaded, in a recess 50 in the rear end of the camshaft 28, and a rotor interface, eg spline, end 54 to engage the rotor 40 of the feed pump 14. The material of the main shaft member 46 may be different from that of the adapter 48, eg the adapter 48 may be of higher grade steel.
Figure GB2559148A_D0001
/2
Figure GB2559148A_D0002
FIG. 1
2/2 α=Ι
Figure GB2559148A_D0003
u-l
FIG.
Driveshaft with transfer pump adapter
TECHNICAL FIELD
The present invention relates to a fuel pumping system of an injection equipment of an internal combustion engine and, more particularly to a camshaft and a driveshaft adapter cooperating to drive a pressurising pump and a feed pump.
BACKGROUND OF THE INVENTION
In a fuel injection equipment, a feed pump is arranged to flow low pressure fuel to a compression chamber arranged within a pumping and pressurisation equipment and, wherein said fuel is pressurised by a piston urged by a rotating camshaft. The feed pump is also driven in rotation by said camshaft via an end complementary registered in a rotor of the feed pump. The camshaft is a technically complex and costly component defining at least one cam member, a front and a rear bearing cylindrical faces and said end complementary to the rotor. The pumping equipment is a permanent target for performance and quality improvement ans, as a main component of said pumping and pressurisation equipment the camshaft is also subject to improvement and cost reduction.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to resolve the above mentioned problems in providing a pumping system of a fuel injection equipment of an internal combustion engine comprising a feed pump and a high pressure pump, wherein in use, the feed pump flows fuel to the high pressure pump. Said system has a body housing a front bearing and a rear bearing between which a camshaft is arranged to rotate about a camshaft axis so that, in use, it urges a piston of the high pressure pump and, it drives in rotation a rotor of the feed pump about said axis.
Advantageously, the camshaft comprises a main shaft member and a driveshaft adapter complementary engaged in said rotor of the feed pump.
Also, the driveshaft adapter is fixed at a rear end of the main shaft member.
Also, the driveshaft adapter extends from a first end fixed to the main shaft member to a second end registered into the rotor.
Also, the first end of the driveshaft adapter defines a cylindrical portion engaged in complementary recess provided at the rear end of the main shaft member. Also, Said recess extends under the rear bearing.
Also, the main shaft member and the driveshaft adapter are of different materials.
The driveshaft adapter is made out of a higher grade metal than the main shaft member. In a particular embodiment, the driveshaft adapter is made from 100Cr6 steel.
The invention also extends to a pumping system as described above wherein the driveshaft adapter is made out of a lower grade metal than the main shaft member.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention is now described by way of example with reference to the accompanying drawings in which:
Figure 1 is a 3D view of a camshaft actuated fuel pumping system as per the invention, presented with a cutaway enabling internal visualisation.
Figure 2 is an axial section of the camshaft of the pumping system of figure
1.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
In reference to figure 1 a 3D view of a pumping system 10 of a fuel injection equipment of an internal combustion engine is presented, said pumping system 10 having a front side F oriented toward the back of the figure and, a rear side R more visible as being oriented toward the reader. Said pumping system 10 comprises a high pressure pump 12 and a feed pump 14 and in use, the pumping system is arranged in an injection equipment wherein fuel stored in a tank is drawn by the feed pump 14 and transferred to the high pressure pump 12 wherein the fuel is compressed and delivered to a pressurised reservoir, such as a common rail, and to fuel injectors.
The pumping system 10 has a body 16 comprising a main central member 18 to which are fixed a front plate member 22 and a feed pump housing 26. The main member 18 defines a high pressure pumping space S open on the front side F and a rear bearing outer cylinder 20. The large front opening is closed by the front plate 22 that defines a front bearing outer cylinder 24 aligned about a camshaft axis X with the rear bearing outer cylinder 20. The feed pump housing 26 is fixed on the rear side R of the main member opposite the front plate 22, the rear bearing outer face 20 opening on the rear side R in said feed pump housing 26. Representation is done with a cutaway portion enabling to see the inside of the pumping system.
Between the front 24 and the rear 20 bearing openings is axially X arranged a camshaft 28 having a cam member 30 between a front 32 and a rear 34 male bearing faces. On the front side F of the body, the camshaft 28 outwardly extends defining a front outer end 36 adapted to receive means, such as a pulley, to drive the camshaft in rotation and, on the rear side R of the main member 18 of the body, the camshaft outwardly extends in the feed pump 14, defining a rear end 38 engaged in a rotor 40 of the feed pump so that, in use, the pulley, or any other driving means, drives in rotation the camshaft and the rotor of the feed pump.
The high pressure pump 12 further comprises a pumping head 42 wherein fuel flowing from the feed pump 14 into a pumping chamber is pressurised by a piston 44 cooperating with the cam 30 and, is expelled toward a common rail and fuel injectors.
The camshaft 28, shown in axial section on figure 2, is a composite shaft comprising a main member 46 provided with the cam 30 and the two bearing male faces 32, 34 and, a driveshaft adapter 48 fixed to said main member 46 forming the rear end 38 of the camshaft. Although multiple alternatives fixation means are possible, the embodiment represented shows the main shaft member 46 provided on its rear end with an axial cylindrical recess 50 extending under the rear bearing face 34 and, the driveshaft adapter 48 is provided with a complementary male cylindrical portion 52 engaged with press-fit interference in the recess 50. The adapter 48 further comprises a rotor interface end 54 adapted to engage and register in the rotor 40 of the feed pump. As mentioned, the connection between the main member and the adapter can be welded, threaded or using other known fixation means. In case of a threaded interface, the thread turns in the opposite direction to the rotation so it tightens with rotation of the camshaft. Also, the rotor interface end 54 shown is a spline interface that is a typical feed pump interface but other interfaces are known.
Thanks to the composite assembly and the added driveshaft adapter 48, the material selected for the main shaft member 46 differs from the material of said driveshaft adapter 48. Indeed, a higher grade steel, such as 100Cr6, can be selected for the adapter 48 while a lower grade steel, such as 16MnCrS5, can be used steel can be used for the main shaft member 46. Other material options are possible and, a lower grade steel may be chosen for the adapter 48 than for the steel of the main member 46.
Also, in case of a recess 50 and male portion 52 press-fit connection, a pm interference requiring a 20kN insertion force at room temperature can be chosen or, to lower said insertion force, eventually down to zero Newton, the main shaft member 46 can be heated to a temperature which expands the part enough to allow a heat shrink process, this may be around 300°C. In alternative embodiments, other parameters, interference and press force options are possible as long as drive torque is successfully transmitted.
The description is made using a pumping system 10 having only one pressurising unit with only one piston cooperating with one cam and, pumping systems having several pressurising unit with as many cams and pistons can also benefit from the invention of an added feed pump adapter 48 made of a different material.
LIST OF REFERENCES
X camshaft axis
F front side of the pumping system
R rear side of the pumping system S space pumping system high pressure pump feed pump body central member of the body rear bearing outer cylinder front plate front bearing outer cylinder feed pump housing camshaft cam front bearing male face rear bearing male face front end of the camshaft rear end of the camshaft rotor of the feed pump pumping head piston main shaft member driveshaft adapter cylindrical recess male cylindrical portion rotor interface end

Claims (9)

1. Pumping system (10) of a fuel injection equipment of an internal combustion engine comprising a feed pump (14) and a high pressure pump (12), wherein in use, the feed pump (14) flows fuel to the high pressure pump (12), said system (10) having a body (16) housing a front bearing (24) and a rear bearing (20) between which a camshaft (28) is arranged to rotate about a camshaft axis (X) so that, in use, it urges a piston (44) of the high pressure pump and, it drives in rotation a rotor (40) of the feed pump about said axis (X), characterised in that the camshaft (28) comprises a main shaft member (46) and a driveshaft adapter (48) complementary engaged in said rotor (40) of the feed pump.
2. Pumping system (10) as claimed in the preceding claim wherein the driveshaft adapter (48) is fixed at a rear end (38) of the main shaft member (46).
3. Pumping system (10) as claimed in the claim 2 wherein said driveshaft adapter (48) extends from a first end fixed to the main shaft member (46) to a second end registered into the rotor (40).
4. Pumping system (10) as claimed in claim 3 wherein the first end of the driveshaft adapter (48) defines a cylindrical portion (52) engaged in complementary recess (50) provided at the rear end of the main shaft member (46).
5. Pumping system (10) as claimed in claim 4 wherein said recess (50) extends under the rear bearing (20).
6. Pumping system (10) as claimed in any one of the preceding claims wherein the main shaft member (46) and the driveshaft adapter (48) are of different materials.
7. Pumping system (10) as claimed in claim 6 wherein the driveshaft adapter (48) is made out of a different grade metal, lower or higher, than the main shaft member (46).
5
8. Pumping system (10) as claimed in claim 7 wherein the driveshaft adapter (48) is made out of a higher grade metal than the main shaft member (46).
9. Pumping system (10) as claimed in claim 8 wherein the driveshaft adapter (48) is made from 100Cr6 steel.
Intellectual
Property
Office
Application No: GB1701321.0
GB1701321.0A 2017-01-26 2017-01-26 Driveshaft with transfer pump adapter Active GB2559148B (en)

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GB2559148A true GB2559148A (en) 2018-08-01
GB2559148B GB2559148B (en) 2019-06-05

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19913774A1 (en) * 1999-03-26 2000-10-05 Bosch Gmbh Robert Fuel feed unit for fuel injection system, with fuel feed pump integrated into casing of high pressure pump
US20040219038A1 (en) * 2001-10-13 2004-11-04 Stanislaw Bodzak Internal gear pump
WO2008152051A1 (en) * 2007-06-14 2008-12-18 Robert Bosch Gmbh The present invention relates to a high-pressure pump for supplying fuel to an internal-combustion engine
EP2107244A1 (en) * 2008-04-04 2009-10-07 Robert Bosch Gmbh A pump device for supplying high pressure fuel to a fuel injection system
DE102008001573A1 (en) * 2008-05-06 2009-11-12 Robert Bosch Gmbh Pump arrangement for air-compressing, self-igniting internal-combustion engine, has gear pump comprising gear wheel arranged on gear pump shaft, and coupling piece connecting high-pressure pump shaft with gear wheel
DE102009000946A1 (en) * 2009-02-18 2010-08-19 Robert Bosch Gmbh Fuel i.e. diesel, pump for use as pump arrangement for fuel injection systems of air-compressing, self-igniting internal-combustion engines, has clutch arranged at exterior of shaft, where surface is arranged between clutch and housing part
DE102009003098A1 (en) * 2009-05-14 2010-11-18 Robert Bosch Gmbh Fuel injection system for internal combustion engine of person vehicle, has high-pressure fuel pump and mechanically operated feed pump, where feed pump is flanged indirectly at flange surface of high pressure fuel pump
WO2011069708A1 (en) * 2009-12-07 2011-06-16 Robert Bosch Gmbh Pump arrangement
US20130192563A1 (en) * 2012-01-31 2013-08-01 Denso Corporation Fuel supply pump

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19913774A1 (en) * 1999-03-26 2000-10-05 Bosch Gmbh Robert Fuel feed unit for fuel injection system, with fuel feed pump integrated into casing of high pressure pump
US20040219038A1 (en) * 2001-10-13 2004-11-04 Stanislaw Bodzak Internal gear pump
WO2008152051A1 (en) * 2007-06-14 2008-12-18 Robert Bosch Gmbh The present invention relates to a high-pressure pump for supplying fuel to an internal-combustion engine
EP2107244A1 (en) * 2008-04-04 2009-10-07 Robert Bosch Gmbh A pump device for supplying high pressure fuel to a fuel injection system
DE102008001573A1 (en) * 2008-05-06 2009-11-12 Robert Bosch Gmbh Pump arrangement for air-compressing, self-igniting internal-combustion engine, has gear pump comprising gear wheel arranged on gear pump shaft, and coupling piece connecting high-pressure pump shaft with gear wheel
DE102009000946A1 (en) * 2009-02-18 2010-08-19 Robert Bosch Gmbh Fuel i.e. diesel, pump for use as pump arrangement for fuel injection systems of air-compressing, self-igniting internal-combustion engines, has clutch arranged at exterior of shaft, where surface is arranged between clutch and housing part
DE102009003098A1 (en) * 2009-05-14 2010-11-18 Robert Bosch Gmbh Fuel injection system for internal combustion engine of person vehicle, has high-pressure fuel pump and mechanically operated feed pump, where feed pump is flanged indirectly at flange surface of high pressure fuel pump
WO2011069708A1 (en) * 2009-12-07 2011-06-16 Robert Bosch Gmbh Pump arrangement
US20130192563A1 (en) * 2012-01-31 2013-08-01 Denso Corporation Fuel supply pump

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