EP0881380A1 - Pompe d'alimentation haute-pression - Google Patents

Pompe d'alimentation haute-pression Download PDF

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Publication number
EP0881380A1
EP0881380A1 EP98108103A EP98108103A EP0881380A1 EP 0881380 A1 EP0881380 A1 EP 0881380A1 EP 98108103 A EP98108103 A EP 98108103A EP 98108103 A EP98108103 A EP 98108103A EP 0881380 A1 EP0881380 A1 EP 0881380A1
Authority
EP
European Patent Office
Prior art keywords
pressure
plunger
feed pump
valve
pressure feed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98108103A
Other languages
German (de)
English (en)
Inventor
Fritz Spinnler
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.)
Schweizerische Industrie Gesellschaft
Original Assignee
Schweizerische Industrie Gesellschaft
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 Schweizerische Industrie Gesellschaft filed Critical Schweizerische Industrie Gesellschaft
Publication of EP0881380A1 publication Critical patent/EP0881380A1/fr
Withdrawn legal-status Critical Current

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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
    • F02M59/44—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
    • F02M59/485—Means for fixing delivery valve casing and barrel to each other or to pump casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • F02M59/08—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 two or more pumping elements with conjoint outlet or several pumping elements feeding one engine cylinder
    • 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
    • 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

Definitions

  • the present invention relates to a high-pressure feed pump according to the preamble of claim 1.
  • Feed pumps that work on the reciprocating principle and have a piston which is long in relation to the diameter, are suitable to overcome high pressures and can, for example for the generation of the injection pressure in a so-called common rail injection system for diesel engines be used.
  • a generic high pressure feed pump is in the US patent No. 5,094,216.
  • the plunger cylinder has a substantially circular cylindrical shape Passage in which on the one hand the plunger back and forth is movably guided and on the other hand one in Diameter forms much larger receiving space, in which a filling valve is used.
  • the complicated in form and for one inexpensive manufacture difficult to access, as a plunger cylinder acting further housing part, is likely with regard Resilience with extremely high delivery pressures limited be.
  • the plunger cylinder is essentially rotationally symmetrical.
  • the plunger cylinder is made of material to manufacture a curable material; through the rotational symmetry becomes the hardening process in mass production easy to control.
  • the plunger cylinder of gripped a pressure body under press fit Through the The pressure body brings the press fit onto the plunger cylinder a compressive stress on its outer periphery.
  • This compressive stress acts as an external prestress the essentially rotationally symmetrical plunger cylinder relieves this of high voltages when using the high pressure feed pump extremely high pressures are generated in the fluid will.
  • the plunger cylinder also on its outer Periphery cylindrical, preferably circular cylindrical is designed, he can in a simple manner be surrounded with a pressure body of opposite shape, by inserting the plunger cylinder into the pressure body in the Type of longitudinal press fit pressed in or with this using a shrinking process to form a cross interference fit is connected.
  • the arrangement according to the invention of plunger cylinder and pressure body allowed for the pressure body the use of a less expensive material, which also does not undergo any special heat treatment must become.
  • a particularly preferred embodiment of the invention High-pressure feed pump is defined in claim 2.
  • the higher that to be generated with a high-pressure feed pump Pressure the greater the load on the plunger, the plunger cylinder and especially that Filling valve and the pressure valve.
  • these Valves for example as mushroom or ball valves can be trained occur with increasing delivery pressures increasing tension in the material in the area of Valve seats.
  • the valve seats are on Designed plunger cylinder, these tensions can reduce by means of the pressure hull.
  • High-pressure feed pump according to claim 3 allowed with careful treatment of the plunger cylinder and of the pressure body is simple and for mass production suitable assembly.
  • a particularly simple form of training the inventive High-pressure feed pump with at least two delivery rooms is defined in claim 4.
  • the high pressure feed pump according to claim 7 and 8 can a high pressure connection line between the plunger cylinder and the high pressure room, possibly the common rail, to be dispensed with.
  • These training forms of the high pressure feed pump are particularly suitable for injection systems of internal combustion engines in which the crankshaft or camshaft of the internal combustion engine parallel to Drive shaft of the high-pressure feed pump is arranged.
  • the high-pressure chamber or the common rail preferably for crank or Parallel camshaft Longitudinal direction.
  • FIG. 1 and 2 show an internal combustion engine 10 with a fuel injection system 12. This has a High-pressure feed pump 14 on by means of a flange 16 is attached to the internal combustion engine 10 such that the Axis of rotation 18 of their drive shaft 20 parallel to one Dash-dotted crankshaft 22 of the internal combustion engine 10 runs.
  • the drive shaft 20 is in generally known way to drive them with the Crankshaft 22 connected.
  • the high-pressure feed pump 14 has, for example, two delivery spaces 24, each of which is essentially rotationally symmetrical trained plunger cylinders 26 and one that can be slid back and forth, shaft-like plunger with a circular cross-section 28 are limited.
  • the plunger cylinders 26 are seen in the direction of the axis of rotation 18 in a row arranged. How to cut this with reference to FIGS. 1 and 2 shown left plunger 26 is shown is the plunger 28 in a circular cylindrical shape Passage 30 of the plunger cylinder 26 is guided over a length, which is much larger than the diameter of the Plunger 28.
  • the passage 31 points in its from the drive shaft 20 end area facing away from a conical taper that a valve seat 32 formed on the plunger cylinder 26 a filling valve 34 designed as a ball valve.
  • the ball of the filling valve 34 is connected to one by one Bead of the plunger 26 supported spring against the Valve seat 32 pushed. Seen in the direction of the longitudinal axis 28 ', is the delivery chamber 24 through the plunger 28 and limits the fill valve 34.
  • a radial passage extends from the delivery chamber 24 to circular cylindrical periphery or surface 38 of the Plunger cylinder 26.
  • the radial passage 36 has a conical extension on, which as a molded on the plunger 26
  • Valve seat 40 also designed as a ball valve Pressure valve 42 acts.
  • the ball of the pressure valve 42 is also against the valve seat 40 by means of a spring crowded.
  • the two plunger cylinders 26 are common to one of them Gripped pressure body 44 with a press fit. In Seen in the longitudinal direction 28 ', the plunger cylinders overlap 26 and the pressure body 44 such that the delivery space 24 and the valve seats 32, 40 within the joining or Overlap area 38 are arranged.
  • Per pressure body 44 points to its inner, the respective Plunger cylinder 26 side facing one against this open annulus 46, in the assembled state the radial passage 36 opens.
  • the one in FIGS. 1 and 2 Plunger cylinder 26 shown on the left is associated with annular space 46 is in the pressure body 44 via a connecting channel 48 the annular space assigned to the other plunger cylinder 26 46 connected, which in turn also via a Pressure body 44 molded outlet channel 50 is connected.
  • the connecting duct 48 and the outlet duct 50 run in line parallel to the axis of rotation 18.
  • the outlet duct 50 is connected to the one shown in FIG. 1 Form of training a high pressure connection line 52, the other with a pressure chamber 54 forming Common rail 56 is connected. Run from this connecting lines to each injector 58 of the internal combustion engine 10 60.
  • a cover element 62 is placed on the via a feed line 64 with an only schematically indicated Storage room 66, for example a fuel tank, connected is. Inside is the lid element 62 hollow to the feed line 64 with the passages 30 to connect the two plunger cylinders 26.
  • the housing 68 of the high-pressure feed pump 14 has one Housing part 70, which is attached to flange 16 on the one hand is and on the other hand, the other housing part forming pressure body 44, for example by means of screws 45 (see FIG. 3) is attached.
  • the drive shaft 20 is freely rotatable by means of shaft bearings 72 stored.
  • the shaft has two eccentric shaft sections 74, each assigned to a plunger 28 are. On each of the shaft sections 74 sits over one Bearing 76 rotatably supported a ring 76 '.
  • On the drive shaft 20 facing ends have the plunger 28 a plate-like extension 78 on which a Compression spring 80 is supported, the other at one Shoulder 82 of the plunger 26 in question is supported.
  • the compression springs 80 By means of the compression springs 80, the plungers 28 are associated ring 76 'held in place so that this when turning the drive shaft 20 on the extension 78 passes on.
  • FIG. 3 14 In the embodiment of the high-pressure feed pump shown in FIG. 3 14 are for parts that have the same effect Parts of the training forms shown in FIGS. 1 and 2 correspond, the same reference numerals are used.
  • the one in essential plunger cylinder in the form of a circular cylinder 26 is encompassed by the pressure body 44 under a press fit and held.
  • Passage 30 allows the plunger 28 to be pushed back and forth guided and limited with the plunger cylinder 26th the pumping chamber 24.
  • On the plunger 28 facing away Side is the delivery chamber 24 through the filling valve 34 limited.
  • the delivery chamber 24 is in the radial passage 36 in the the pressure valve 42 is arranged (see FIGS. 1 and 2), connected to the annular space 46 in the pressure body 44, which in turn, as described in connection with FIGS. 1 and 2, is connected to the pressure chamber 54.
  • the filling stroke is connected in the opposite direction F ' a delivery stroke, due to the reduction of the delivery space 24 the pressure in this increases until the pressure valve 42 opens, after which the pumped medium from the Delivery chamber 24 into the pressure chamber 54 of the common rail 56, 56 ' is pumped.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Reciprocating Pumps (AREA)
EP98108103A 1997-05-30 1998-05-04 Pompe d'alimentation haute-pression Withdrawn EP0881380A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1275/97 1997-05-30
CH127597 1997-05-30

Publications (1)

Publication Number Publication Date
EP0881380A1 true EP0881380A1 (fr) 1998-12-02

Family

ID=4206615

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98108103A Withdrawn EP0881380A1 (fr) 1997-05-30 1998-05-04 Pompe d'alimentation haute-pression

Country Status (4)

Country Link
EP (1) EP0881380A1 (fr)
JP (1) JPH10331760A (fr)
CN (1) CN1201112A (fr)
CA (1) CA2238916A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10140420A1 (de) * 2001-08-17 2003-03-06 Deutz Ag Kraftstoffeinspritzpumpe
EP1348864A1 (fr) * 2001-01-05 2003-10-01 Hitachi, Ltd. Pompe d'alimentation en carburant haute pression
FR2870895A1 (fr) * 2004-05-28 2005-12-02 Stanadyne Corp Pompe a piston radiaux avec une bague d'actionnement par roulement entrainee de facon excentrique.
US20110142689A1 (en) * 2008-05-14 2011-06-16 Masaharu Tsuboi Diesel pump
WO2011091937A1 (fr) * 2010-01-27 2011-08-04 Robert Bosch Gmbh Système d'injection de carburant à accumulateur haute pression intégré
DE102012024924A1 (de) * 2012-12-19 2014-06-26 Volkswagen Aktiengesellschaft Vorrichtung zum Antrieb einer Kolbenpumpe

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1471247B1 (fr) * 1999-02-09 2006-10-18 Hitachi, Ltd. Pompe d'alimentation en combustible à haute pression pour moteur à combustion interne

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB401177A (en) * 1932-04-01 1933-11-09 Zenith Carburateurs Soc Gen Improvements in or relating to multi-cylinder fuel injection pumps for internal combustion engines
US3294075A (en) * 1963-09-25 1966-12-27 Gratzmuller Jean Louis Injection system for internal combustion engines
DE2348865A1 (de) * 1973-09-28 1975-04-10 Maschf Augsburg Nuernberg Ag Vorrichtung zur brennstoffeinspritzung
SU696173A1 (ru) * 1977-11-09 1979-11-05 Новочеркасский Ордена Трудового Красного Знамени Политехнический Институт Им.Серго Орджоникидзе Плунжерна втулка
GB2107801A (en) * 1981-10-21 1983-05-05 Orange Gmbh Fuel injection pump, especially for a diesel-powered internal- combustion engine
JPS58204963A (ja) * 1982-05-24 1983-11-29 Nissan Motor Co Ltd 燃料噴射ポンプ
US4567872A (en) * 1983-09-26 1986-02-04 Stanadyne, Inc. Unit fuel injector and system therefor
DE3720888A1 (de) * 1986-06-24 1988-01-07 Diesel Kiki Co Kombinierte pumpe
EP0290855A2 (fr) * 1987-05-12 1988-11-17 OMAP S.p.A. Pompe avec un carter autoportant comportant des parties de pompage et d'entraînement séparées, pour l'injection de carburant à haute pression dans des moteurs à combustion interne
US5094216A (en) 1987-09-16 1992-03-10 Nippondenso Co., Ltd. Variable discharge high pressure pump
WO1994027041A1 (fr) * 1993-05-06 1994-11-24 Cummins Engine Company, Inc. Systeme d'alimentation en carburant haute performance, compact, a accumulateur
EP0715070A1 (fr) * 1994-12-01 1996-06-05 Wartsila Diesel International Ltd. OY Installation d'injection d'un fluide sous pression dans un cylindre d'un moteur à combustion interne
US5603303A (en) * 1994-04-28 1997-02-18 Nippondenso Co., Ltd. High pressure fuel supply pump
WO1997012145A1 (fr) * 1995-09-12 1997-04-03 Diesel Technology Company Pompe d'injection de carburant dotee d'une soupape de commande a solenoide

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB401177A (en) * 1932-04-01 1933-11-09 Zenith Carburateurs Soc Gen Improvements in or relating to multi-cylinder fuel injection pumps for internal combustion engines
US3294075A (en) * 1963-09-25 1966-12-27 Gratzmuller Jean Louis Injection system for internal combustion engines
DE2348865A1 (de) * 1973-09-28 1975-04-10 Maschf Augsburg Nuernberg Ag Vorrichtung zur brennstoffeinspritzung
SU696173A1 (ru) * 1977-11-09 1979-11-05 Новочеркасский Ордена Трудового Красного Знамени Политехнический Институт Им.Серго Орджоникидзе Плунжерна втулка
GB2107801A (en) * 1981-10-21 1983-05-05 Orange Gmbh Fuel injection pump, especially for a diesel-powered internal- combustion engine
JPS58204963A (ja) * 1982-05-24 1983-11-29 Nissan Motor Co Ltd 燃料噴射ポンプ
US4567872A (en) * 1983-09-26 1986-02-04 Stanadyne, Inc. Unit fuel injector and system therefor
DE3720888A1 (de) * 1986-06-24 1988-01-07 Diesel Kiki Co Kombinierte pumpe
EP0290855A2 (fr) * 1987-05-12 1988-11-17 OMAP S.p.A. Pompe avec un carter autoportant comportant des parties de pompage et d'entraînement séparées, pour l'injection de carburant à haute pression dans des moteurs à combustion interne
US5094216A (en) 1987-09-16 1992-03-10 Nippondenso Co., Ltd. Variable discharge high pressure pump
WO1994027041A1 (fr) * 1993-05-06 1994-11-24 Cummins Engine Company, Inc. Systeme d'alimentation en carburant haute performance, compact, a accumulateur
US5603303A (en) * 1994-04-28 1997-02-18 Nippondenso Co., Ltd. High pressure fuel supply pump
EP0715070A1 (fr) * 1994-12-01 1996-06-05 Wartsila Diesel International Ltd. OY Installation d'injection d'un fluide sous pression dans un cylindre d'un moteur à combustion interne
WO1997012145A1 (fr) * 1995-09-12 1997-04-03 Diesel Technology Company Pompe d'injection de carburant dotee d'une soupape de commande a solenoide

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section PQ Week 8025, Derwent World Patents Index; Class Q53, AN 80-F5304C, XP002034464 *
PATENT ABSTRACTS OF JAPAN vol. 008, no. 050 (M - 281) 7 March 1984 (1984-03-07) *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1348864A1 (fr) * 2001-01-05 2003-10-01 Hitachi, Ltd. Pompe d'alimentation en carburant haute pression
EP1348864A4 (fr) * 2001-01-05 2005-03-16 Hitachi Ltd Pompe d'alimentation en carburant haute pression
DE10140420A1 (de) * 2001-08-17 2003-03-06 Deutz Ag Kraftstoffeinspritzpumpe
FR2870895A1 (fr) * 2004-05-28 2005-12-02 Stanadyne Corp Pompe a piston radiaux avec une bague d'actionnement par roulement entrainee de facon excentrique.
US7950905B2 (en) 2004-05-28 2011-05-31 Stanadyne Corporation Radial piston fuel supply pump
US8007251B2 (en) 2004-05-28 2011-08-30 Stanadyne Corporation Radial piston fuel supply pump
US20110142689A1 (en) * 2008-05-14 2011-06-16 Masaharu Tsuboi Diesel pump
US8545192B2 (en) * 2008-05-14 2013-10-01 Koganei Seiki Co., Ltd. Diesel pump with cylinder and outlet joint arrangement
WO2011091937A1 (fr) * 2010-01-27 2011-08-04 Robert Bosch Gmbh Système d'injection de carburant à accumulateur haute pression intégré
US9068543B2 (en) 2010-01-27 2015-06-30 Robert Bosch Gmbh Fuel injection system with integrated high-pressure accumulator
DE102012024924A1 (de) * 2012-12-19 2014-06-26 Volkswagen Aktiengesellschaft Vorrichtung zum Antrieb einer Kolbenpumpe

Also Published As

Publication number Publication date
CA2238916A1 (fr) 1998-11-30
CN1201112A (zh) 1998-12-09
JPH10331760A (ja) 1998-12-15

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