EP0202451A1 - Pompe d'injection de carburant pour moteurs à combustion interne - Google Patents

Pompe d'injection de carburant pour moteurs à combustion interne Download PDF

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Publication number
EP0202451A1
EP0202451A1 EP86104864A EP86104864A EP0202451A1 EP 0202451 A1 EP0202451 A1 EP 0202451A1 EP 86104864 A EP86104864 A EP 86104864A EP 86104864 A EP86104864 A EP 86104864A EP 0202451 A1 EP0202451 A1 EP 0202451A1
Authority
EP
European Patent Office
Prior art keywords
injection pump
roller ring
grooves
fuel injection
ring
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
EP86104864A
Other languages
German (de)
English (en)
Other versions
EP0202451B1 (fr
Inventor
Siegfried Haberland
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0202451A1 publication Critical patent/EP0202451A1/fr
Application granted granted Critical
Publication of EP0202451B1 publication Critical patent/EP0202451B1/fr
Expired 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
    • F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
    • F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
    • F02M41/10—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor
    • F02M41/12—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor
    • F02M41/123—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor characterised by means for varying fuel delivery or injection timing
    • F02M41/128—Varying injection timing by angular adjustment of the face-cam or the rollers support
    • 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
    • F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
    • F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
    • F02M41/10—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor
    • F02M41/12—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor
    • F02M41/121—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor with piston arranged axially to driving shaft
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18024—Rotary to reciprocating and rotary

Definitions

  • the invention relates to a fuel injection pump for internal combustion engines according to the preamble of claim 1.
  • the support part which is rotatable and supports the roller ring as a ring, has a plurality of recesses arranged in the manner of a waffle pattern in its support surface for receiving fuel as a lubricant. Since the fuel penetrating into the depressions remains enclosed, the lubricity is very sensitive to dirt. Furthermore, the load-bearing portion of the support surface is considerably reduced by the total area of the depressions.
  • the fuel injection pump according to the invention with the characterizing features of claim 1 has the advantage that better lubrication and thus better sliding of the roller ring on the support member is achieved by a better supply of fuel.
  • By flooding the radial grooves the gliding effect is insensitive to dirt.
  • the supporting surface of the support ring is increased by a lower removal on the support surface of the support ring, so that a low surface pressure is present.
  • FIG. 1 shows a fuel distributor injection pump for internal combustion engines in a simplified side view, partially cut
  • FIG. 2 shows the distributor injection pump according to FIG. 1 in cross section in the plane II-II of FIG. 1
  • FIG. 3 shows a detail III of FIG. 1 in an enlarged view.
  • a drive shaft 11 is rotatably mounted, which rotates a lifting disk 13 and a distributor piston 14 via a cross slide coupling 1-2.
  • the drive shaft 11 carries a gear 16 meshing with a pinion 15 of a speed controller and a rotor 17 of a feed pump 18 delivering fuel into the interior of the housing 10.
  • the annular stator 19 of the feed pump 18 is fixed in a recess in the housing 10 used.
  • the lifting disk 13 For superimposing a lifting movement of the rotary movement of the distributor piston 14, the lifting disk 13 has cams 21 on its surface facing the cross slide clutch 12, which rest on rollers 22 of a roller ring 23 surrounding the cross slide clutch 12 and the gear 16.
  • the roller ring 23 is rotatably supported by a certain angular amount in a cylindrical recess 24 in the housing 10 which is open to the speed controller with the pinion 15.
  • the roller ring 23 has an arcuate ablation 25, through which the pinion 15 meshing with the gear 16 engages.
  • the four diagonally arranged rollers 22 are arranged in an axial groove 26 of the roller ring 23 open against the lifting disk 13 and are rotatably mounted on bolts 27 which lie in axial, radially extending recesses 28.
  • a radially protruding bolt 31 is inserted in the roller ring on the side opposite to the removal 25 and engages through a breakthrough 32 in the housing 10 in a ball sleeve 33 of an adjusting piston 34.
  • the roller ring 23 is rotated by the bolt 31 through a more or less large angular amount in the recess 24, so that the stroke of the distributor piston 14 is phase-shifted.
  • the roller ring 23 lies with its end support surface 37 axially on the facing. Side of the disc-shaped support ring 36.
  • the annular support surface 37 is very narrow by a recess for receiving the gear 16 and is interrupted in the area of the removal 25. Good lubrication for the sliding of the roller ring 23 on the support ring 36
  • the support ring 36 has in its side facing the support surface 37 of the roller ring 23 a plurality of radially extending grooves 38 at regular intervals.
  • the grooves 38 are preferably spaced 10 degrees apart, are approximately 0.5 mm wide and 0.5 mm deep.
  • the roller ring 23 has a chamfer or a shoulder 39 in the region of its support surface 37, which forms a drainage channel for the fuel together with the housing 10 and the support ring 36.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP86104864A 1985-05-10 1986-04-09 Pompe d'injection de carburant pour moteurs à combustion interne Expired EP0202451B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853516867 DE3516867A1 (de) 1985-05-10 1985-05-10 Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
DE3516867 1985-05-10

Publications (2)

Publication Number Publication Date
EP0202451A1 true EP0202451A1 (fr) 1986-11-26
EP0202451B1 EP0202451B1 (fr) 1988-09-07

Family

ID=6270374

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86104864A Expired EP0202451B1 (fr) 1985-05-10 1986-04-09 Pompe d'injection de carburant pour moteurs à combustion interne

Country Status (4)

Country Link
US (1) US4679993A (fr)
EP (1) EP0202451B1 (fr)
JP (1) JP2540304B2 (fr)
DE (2) DE3516867A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0812985A1 (fr) * 1996-06-04 1997-12-17 Lucas Industries Public Limited Company Pompe rotative et anneau-came pour cette pompe

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19939426A1 (de) * 1999-08-20 2001-03-01 Bosch Gmbh Robert Kraftstoffeinspritzsystem für eine Brennkraftmaschine
JP3906775B2 (ja) * 2001-12-18 2007-04-18 株式会社デンソー 分配型燃料噴射ポンプ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1234090B (de) * 1963-11-02 1967-02-09 Bosch Gmbh Robert Verstelleinrichtung fuer den Spritzbeginn bei Kraftstoffeinspritzpumpen fuer Brennkraftmaschinen
DE1263397B (de) * 1966-12-06 1968-03-14 Bosch Gmbh Robert Kraftstoffeinspritzpumpe fuer Brennkraftmaschinen
DE3332636A1 (de) * 1982-10-14 1984-04-19 Nissan Motor Co., Ltd., Yokohama, Kanagawa Vorrichtung zur einstellung der treibstoffeinspritzfolge fuer eine treibstoffeinspritzpumpe

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3107631A (en) * 1960-06-23 1963-10-22 Balanced drive mechanism for a
US3120811A (en) * 1962-01-29 1964-02-11 Thunderbird Engineering Co Fluid injector pump
US3381615A (en) * 1966-12-09 1968-05-07 Caterpillar Tractor Co Driving and timing mechanism for fuel injection pump
US3515016A (en) * 1968-07-18 1970-06-02 Minijector Corp Adjustable variable delivery pump
SE7414679L (sv) * 1974-11-22 1976-05-24 Atlas Copco Ab Anordning for omvandling av en roterande roresle till en fram och aer gaende rorelse eller vice versa
US4436163A (en) * 1978-12-13 1984-03-13 Black & Decker Inc. Arrangement for converting rotary motion to reciprocatory motion
EP0116165A1 (fr) * 1983-01-13 1984-08-22 Franz Orlita Pompe alternative à piston tournant
JPS613933U (ja) * 1984-06-13 1986-01-11 株式会社デンソー 分配型燃料噴射ポンプの燃料噴射時期調整装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1234090B (de) * 1963-11-02 1967-02-09 Bosch Gmbh Robert Verstelleinrichtung fuer den Spritzbeginn bei Kraftstoffeinspritzpumpen fuer Brennkraftmaschinen
DE1263397B (de) * 1966-12-06 1968-03-14 Bosch Gmbh Robert Kraftstoffeinspritzpumpe fuer Brennkraftmaschinen
DE3332636A1 (de) * 1982-10-14 1984-04-19 Nissan Motor Co., Ltd., Yokohama, Kanagawa Vorrichtung zur einstellung der treibstoffeinspritzfolge fuer eine treibstoffeinspritzpumpe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0812985A1 (fr) * 1996-06-04 1997-12-17 Lucas Industries Public Limited Company Pompe rotative et anneau-came pour cette pompe
US5950522A (en) * 1996-06-04 1999-09-14 Lucas Industries Plc Rotary pump and cam ring therefor

Also Published As

Publication number Publication date
DE3660689D1 (en) 1988-10-13
JP2540304B2 (ja) 1996-10-02
JPS61261651A (ja) 1986-11-19
US4679993A (en) 1987-07-14
DE3516867A1 (de) 1986-11-13
EP0202451B1 (fr) 1988-09-07

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