EP0290855A2 - Pumpe, mit einem selbsttragenden Gehäuse, das getrennte Pumpen- und Antriebsteile enthält, zum Hochdruckeinspritzen von Brennstoff in Brennkraftmaschinen - Google Patents

Pumpe, mit einem selbsttragenden Gehäuse, das getrennte Pumpen- und Antriebsteile enthält, zum Hochdruckeinspritzen von Brennstoff in Brennkraftmaschinen Download PDF

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Publication number
EP0290855A2
EP0290855A2 EP88106652A EP88106652A EP0290855A2 EP 0290855 A2 EP0290855 A2 EP 0290855A2 EP 88106652 A EP88106652 A EP 88106652A EP 88106652 A EP88106652 A EP 88106652A EP 0290855 A2 EP0290855 A2 EP 0290855A2
Authority
EP
European Patent Office
Prior art keywords
fuel injection
pressure fuel
self
internal combustion
combustion engines
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Withdrawn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
EP88106652A
Other languages
English (en)
French (fr)
Other versions
EP0290855A3 (de
Inventor
Nedo Ferrucci
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.)
OMAP SpA
Original Assignee
OMAP SpA
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 OMAP SpA filed Critical OMAP SpA
Publication of EP0290855A2 publication Critical patent/EP0290855A2/de
Publication of EP0290855A3 publication Critical patent/EP0290855A3/de
Withdrawn legal-status Critical Current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
    • 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

  • This invention relates to the field of fuel pumps used for fuel injection in internal combustion engines of the diesel or otto cycle type, and in particular to a reciprocating pump.
  • An object of the present invention is to provide a reciprocating pump which is thermally insulated to a certain extent from the engine structure so as to reduce the degree of temperature rise during operation.
  • a further object is to provide a reciprocating pump having a self-contained casing comprising a drive part and pumping part which are separate and themselves self-contained, so as to facilitate replacement of an individual damaged element.
  • a further object is to provide a reciprocating pump which still retains the typical operating characteristics of conventional pumps integral with the crankcase.
  • a reciprocating pump for high-pressure fuel injection in internal combustion engines characterised by a self-contained casing provided with pumping and drive sections which are separate from each other to allow their overhaul and/or replacement by particularly advantageous procedures.
  • Figure 1 is a complete side sectional view of the casing of a three-plunger reciprocating pump, and showing a specific pumping unit in partial section;
  • Figure 2 is a side view taken perpendicular to Figure 1.
  • an outer box casing 1 is provided with a hole 2 for supporting a cylindrical portion 3T of a camshaft 3 supported at its other end 3E by a seat 4S in a cover 4 fixed by usual screws 5.
  • the camshaft 3 is retained in its working seat by a split ring 6 operating in an outward direction. Inward retention is provided by a shoulder 3P formed on the end 3F which is rotated by specific members of the engine by way of pins or bolts engaged in bores 7 with the assistance of a locating seat 8.
  • the box casing 1 is provided with a flange 1G having slotted holes 9 to enable the casing 1 to be fixed to the engine (not shown) on the plane Z, using normal bolts.
  • the cams are indicated by 3B, 3C, 3D, and on them there rotate the rollers 14 of the tappets which comprise the individual pumping plungers 12.
  • the box casing 1 is provided upperly with an aperture into which a housing for the various pumping units 16 is inserted.
  • the drawing shows a type comprising three pumping units for feeding a three-cylinder engine, however the pump of the present invention can be provided with any number of pumping units, and is therefore suitable for any multi-cylinder engine.
  • the housing 15 is shown sectioned only to the extent necessary to show the arrangement of the various pumping units 16 in its interior.
  • the housing 15 is fixed to the box casing 1 by normal bolts 17.
  • the described embodiment advantageously enables those parts of the pump most subject to wear or damage (ie the elements which undergo reciprocating movement and are subjected to the flowing fuel) to be replaced by merely unscrewing a few fixing bolts 17 and removing the delivery pipes from their connectors 18.
  • a further advantage of the present invention is the considerable area of its radiant surface compared with the small area of the surface 1G by which it is connected to the engine and through which it absorbs heat.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP88106652A 1987-05-12 1988-04-26 Pumpe, mit einem selbsttragenden Gehäuse, das getrennte Pumpen- und Antriebsteile enthält, zum Hochdruckeinspritzen von Brennstoff in Brennkraftmaschinen Withdrawn EP0290855A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8702917A IT1206949B (it) 1987-05-12 1987-05-12 Pompa a corpo autonomo con sezioni pompante e motrice distinte per iniezioni ad alta pressione dicarburante in motori endotermici.
IT291787 1987-05-12

Publications (2)

Publication Number Publication Date
EP0290855A2 true EP0290855A2 (de) 1988-11-17
EP0290855A3 EP0290855A3 (de) 1989-10-18

Family

ID=11103780

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88106652A Withdrawn EP0290855A3 (de) 1987-05-12 1988-04-26 Pumpe, mit einem selbsttragenden Gehäuse, das getrennte Pumpen- und Antriebsteile enthält, zum Hochdruckeinspritzen von Brennstoff in Brennkraftmaschinen

Country Status (2)

Country Link
EP (1) EP0290855A3 (de)
IT (1) IT1206949B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0418046A1 (de) * 1989-09-12 1991-03-20 Kubota Corporation Dieselmotor mit mechanischem Regler
WO1998044258A1 (de) * 1997-03-27 1998-10-08 Robert Bosch Gmbh Pumpe, insbesondere hochdruckpumpe für eine kraftstoffeinspritzvorrichtung eines verbrennungsmotors
EP0881380A1 (de) * 1997-05-30 1998-12-02 SIG Schweizerische Industrie-Gesellschaft Hochdruckförderpumpe

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE852926C (de) * 1948-10-02 1952-10-20 Orange Kunden Dienst G M B H L Einspritzpumpe fuer Mehrzylindermotoren
US3624823A (en) * 1969-03-18 1971-11-30 Bosch Gmbh Robert Multicylinder fuel injection pump for internal combustion engines
EP0090226A1 (de) * 1982-03-25 1983-10-05 Robert Bosch Gmbh Verfahren und Vorrichtung zum Anbau einer Einspritzpumpe an eine Brennkraftmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE852926C (de) * 1948-10-02 1952-10-20 Orange Kunden Dienst G M B H L Einspritzpumpe fuer Mehrzylindermotoren
US3624823A (en) * 1969-03-18 1971-11-30 Bosch Gmbh Robert Multicylinder fuel injection pump for internal combustion engines
EP0090226A1 (de) * 1982-03-25 1983-10-05 Robert Bosch Gmbh Verfahren und Vorrichtung zum Anbau einer Einspritzpumpe an eine Brennkraftmaschine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0418046A1 (de) * 1989-09-12 1991-03-20 Kubota Corporation Dieselmotor mit mechanischem Regler
WO1998044258A1 (de) * 1997-03-27 1998-10-08 Robert Bosch Gmbh Pumpe, insbesondere hochdruckpumpe für eine kraftstoffeinspritzvorrichtung eines verbrennungsmotors
EP0881380A1 (de) * 1997-05-30 1998-12-02 SIG Schweizerische Industrie-Gesellschaft Hochdruckförderpumpe

Also Published As

Publication number Publication date
EP0290855A3 (de) 1989-10-18
IT1206949B (it) 1989-05-11
IT8702917A0 (it) 1987-05-12

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