EP0560126A1 - Dispositif d'actionnement d'une pompe à injection - Google Patents

Dispositif d'actionnement d'une pompe à injection Download PDF

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Publication number
EP0560126A1
EP0560126A1 EP93102908A EP93102908A EP0560126A1 EP 0560126 A1 EP0560126 A1 EP 0560126A1 EP 93102908 A EP93102908 A EP 93102908A EP 93102908 A EP93102908 A EP 93102908A EP 0560126 A1 EP0560126 A1 EP 0560126A1
Authority
EP
European Patent Office
Prior art keywords
lubricant
push rod
bore
rocker arm
spring
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
EP93102908A
Other languages
German (de)
English (en)
Other versions
EP0560126B1 (fr
Inventor
Rüdiger Dipl.-Ing. Hass
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.)
Caterpillar Motoren GmbH and Co KG
Original Assignee
Krupp Mak Maschinenbau 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 Krupp Mak Maschinenbau GmbH filed Critical Krupp Mak Maschinenbau GmbH
Publication of EP0560126A1 publication Critical patent/EP0560126A1/fr
Application granted granted Critical
Publication of EP0560126B1 publication Critical patent/EP0560126B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02M59/02—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
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/30—Varying fuel delivery in quantity or timing with variable-length-stroke pistons
    • 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

Definitions

  • the invention relates to a device for actuating an injection pump via a pressure rod, which is arranged between the pump piston of the injection pump and the roller tappet, which is connected to a camshaft.
  • a large power transmission by means of a push rod on a pump piston is required.
  • the push rod is connected on the one hand via a spring under tension to a roller tappet which is in engagement with the camshaft and on the other hand is supported on the pump piston.
  • a roller tappet which is in engagement with the camshaft and on the other hand is supported on the pump piston.
  • the object of the invention is therefore to improve a device of the generic type and to ensure that the push rod can move freely on its bearing or support surfaces, the spring working almost without buckling during the working process.
  • the push rod is held biased by a spring on a rocker arm carrying the rocker arm and the spring is supported between a spring plate on the rocker arm and on the housing of the injection pump and the rocker arm facing a spring plate from a head the push rod mounted sleeve element and lubricant feeds are provided in bearings of the push rod on the rocker arm and on the pump piston of the injection pump.
  • the main advantages achieved by the invention are that the bearing surfaces of the push rod on the piston and on the rocker arm are constantly provided with an oil film by a lubricant supply.
  • the bearing surface of the push rod on the pump piston is convex and that on the rocker arm is concave, these hemispherical surfaces corresponding to corresponding hemispherical surfaces, so that there is a pivot bearing at each end of the push rod.
  • a pressure spring which is arranged between two spring plates, ensures that the pressure rod is in constant contact with the rocker arm or with the rocker arm bearing.
  • the spring is supported in the area of the pump on an upper spring plate held on the cylinder crankcase and in the area of the rocker arm on an spring plate designed as a sleeve element on a head of the pressure rod.
  • a longitudinally extending lubricant bore is arranged in the push rod, which is connected to a lubricant channel in the rocker arm, which is arranged coaxially with the lubricant bore in the area of the lower push rod bearing.
  • This bore enters in the area of the upper push rod bearing into a bore of the pump piston, from which radial bores branch off, which open into a circumferential, equal surface of the piston.
  • the lower spring plate is designed as a single component. This can be achieved that with a position of the tappet roller on the base circle of the camshaft there is a play between the pressure rod and the system surface on the pump piston.
  • the spring cannot hinder the supply of lubricant to the ball surfaces due to the separate spring plate.
  • This spring plate also ensures that there is hardly any kinking of the spring and that there is only a slight spring deformation even when the rocker arm bearing is adjusted via an eccentric.
  • the device To actuate an injection pump 1, the device comprises a push rod 2 with a separate guide for a spring 3. This is arranged coaxially with the push rod 2 and is supported at each end on a spring plate 4, 5. The upper one in the area of the pump 1, a spring plate 4 is held on the housing 6 and mounted in the crankcase 7. The further lower spring plate 5 is placed on a head 8 of the push rod 2 and comprises a sleeve element 9 with a turned-off edge 10 which holds the spring 3.
  • the free lower end of the push rod 2, which has the spring plate 5, is held on a rocker arm 11 in a bearing 12, a roller tappet 18, which engages with a camshaft 14, being connected to the rocker arm 11.
  • the rocker arm 11 is articulated on the crankcase 7 via an eccentric bearing 11a for adjusting the start of injection and is adjustable in this bearing according to the requirements.
  • the push rod 2 is supported in the pump piston 23 in a concave hemispherical surface 15 which corresponds to a convex hemispherical surface 16 of the push rod 2 and results in a pivotable further bearing 17.
  • the pivotable mounting 12 on the rocker arm 11 comprises a support element 18 which has a convex hemispherical surface 19 which is arranged corresponding to a concave hemispherical surface 20 of the push rod 2.
  • a longitudinally extending lubricant bore 21 which is connected to a lubricant channel 22 in the rocker arm 11.
  • a blind bore 24 which is coaxial with the lubricant bore 21 and has radially branching channels 25 which run into a guide wall 26.
  • a play y Between the hemispherical surfaces 15 and 16 of the bearing 17 there is a basic position of the push rod 2, i.e. if the roller tappet 13 runs on the base circle G of the camshaft 14, a play y. This game causes a provision of the hemispherical surfaces 15 and 16 with lubricant, so that a constant oil film between the adjacent surfaces is guaranteed.
  • the head 8 of the push rod 2 carries the separate spring plate 5 designed as a sleeve element 9 and is provided with radial bores 27 and 28 which branch off from the longitudinally extending lubricant bore 21 and which open into a sliding surface 30 between the sleeve element 9 and the head 8.
  • the lubricant bore 21 of the push rod 2 or the subsequent channels and bores each have a countersink 31, 32 at their mouth openings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
EP93102908A 1992-03-13 1993-02-25 Dispositif d'actionnement d'une pompe à injection Expired - Lifetime EP0560126B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4207980 1992-03-13
DE4207980A DE4207980A1 (de) 1992-03-13 1992-03-13 Vorrichtung zur betaetigung einer einspritzpumpe

Publications (2)

Publication Number Publication Date
EP0560126A1 true EP0560126A1 (fr) 1993-09-15
EP0560126B1 EP0560126B1 (fr) 1996-05-08

Family

ID=6453946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93102908A Expired - Lifetime EP0560126B1 (fr) 1992-03-13 1993-02-25 Dispositif d'actionnement d'une pompe à injection

Country Status (3)

Country Link
EP (1) EP0560126B1 (fr)
DE (2) DE4207980A1 (fr)
FI (1) FI104012B1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0644328A1 (fr) * 1993-09-17 1995-03-22 Lucas Industries Public Limited Company Dispositif de pompage de carburant
DE4409555A1 (de) * 1994-03-19 1995-09-21 Mak Maschinenbau Krupp Vorrichtung zur Druckerzeugung für eine Druckölsperre einer Einspritzpumpe
WO2005111405A1 (fr) * 2004-05-13 2005-11-24 Robert Bosch Gmbh Pompe haute pression destinee a un dispositif d'injection de carburant d'un moteur a combustion interne
US7243301B2 (en) 2002-04-10 2007-07-10 Microsoft Corporation Common annotation framework
US7747943B2 (en) 2001-09-07 2010-06-29 Microsoft Corporation Robust anchoring of annotations to content
EP2677142A1 (fr) 2012-06-22 2013-12-25 Caterpillar Motoren GmbH & Co. KG Matériau de restauration dentaire
EP2752561A1 (fr) 2013-01-07 2014-07-09 Caterpillar Motoren GmbH & Co. KG Procédé et dispositif pour contrôler le fonctionnement d'un moteur à combustion interne
EP2752571A1 (fr) 2013-01-07 2014-07-09 Caterpillar Motoren GmbH & Co. KG Procédé et dispositif pour contrôler le fonctionnement d'un moteur à deux combustibles

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19702268A1 (de) * 1997-01-23 1998-07-30 Deutz Ag Einspritzverlaufformung für MV-Einspritzsysteme
DE102019117910A1 (de) * 2019-07-03 2021-01-07 Schaeffler Technologies AG & Co. KG Rollenstößel für eine Kraftstoffhochdruckpumpe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1989891A (en) * 1926-08-09 1935-02-05 Allis Chalmers Mfg Co Fuel injection device
FR1248791A (fr) * 1959-03-19 1960-12-23 Daimler Benz Ag Dispositif pour le réglage de l'instant d'injection sur des moteurs à combustion interne
US3034488A (en) * 1960-10-31 1962-05-15 Cummins Engine Co Inc Push rod structure for an internal combustion engine
US3859973A (en) * 1971-12-27 1975-01-14 Allis Chalmers Timing device for fuel injector
FR2544386A1 (fr) * 1983-04-13 1984-10-19 Maschf Augsburg Nuernberg Ag Moteur a combustion interne a pistons alternatifs comportant un dispositif de reglage de points d'injection
DE3740956A1 (de) * 1986-12-10 1988-06-23 Steyr Daimler Puch Ag Einspritzpumpe fuer dieselmotoren

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1989891A (en) * 1926-08-09 1935-02-05 Allis Chalmers Mfg Co Fuel injection device
FR1248791A (fr) * 1959-03-19 1960-12-23 Daimler Benz Ag Dispositif pour le réglage de l'instant d'injection sur des moteurs à combustion interne
US3034488A (en) * 1960-10-31 1962-05-15 Cummins Engine Co Inc Push rod structure for an internal combustion engine
US3859973A (en) * 1971-12-27 1975-01-14 Allis Chalmers Timing device for fuel injector
FR2544386A1 (fr) * 1983-04-13 1984-10-19 Maschf Augsburg Nuernberg Ag Moteur a combustion interne a pistons alternatifs comportant un dispositif de reglage de points d'injection
DE3740956A1 (de) * 1986-12-10 1988-06-23 Steyr Daimler Puch Ag Einspritzpumpe fuer dieselmotoren

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0644328A1 (fr) * 1993-09-17 1995-03-22 Lucas Industries Public Limited Company Dispositif de pompage de carburant
US5462028A (en) * 1993-09-17 1995-10-31 Lucas Industries Public Limited Company Fuel pumping apparatus
DE4409555A1 (de) * 1994-03-19 1995-09-21 Mak Maschinenbau Krupp Vorrichtung zur Druckerzeugung für eine Druckölsperre einer Einspritzpumpe
DE4409555C2 (de) * 1994-03-19 2003-04-17 Caterpillar Motoren Gmbh & Co Vorrichtung zur Druckerzeugung für eine Druckölsperre einer Einspritzpumpe
US7747943B2 (en) 2001-09-07 2010-06-29 Microsoft Corporation Robust anchoring of annotations to content
US7243301B2 (en) 2002-04-10 2007-07-10 Microsoft Corporation Common annotation framework
WO2005111405A1 (fr) * 2004-05-13 2005-11-24 Robert Bosch Gmbh Pompe haute pression destinee a un dispositif d'injection de carburant d'un moteur a combustion interne
US7513190B2 (en) 2004-05-13 2009-04-07 Robert Bosch Gmbh High-pressure pump for a fuel injection system of an internal combustion engine
EP2677142A1 (fr) 2012-06-22 2013-12-25 Caterpillar Motoren GmbH & Co. KG Matériau de restauration dentaire
WO2013189603A1 (fr) 2012-06-22 2013-12-27 Caterpillar Motoren Gmbh & Co. Kg Procédé et dispositif permettant de commander la marche d'un moteur diesel à deux combustibles
EP2752561A1 (fr) 2013-01-07 2014-07-09 Caterpillar Motoren GmbH & Co. KG Procédé et dispositif pour contrôler le fonctionnement d'un moteur à combustion interne
EP2752571A1 (fr) 2013-01-07 2014-07-09 Caterpillar Motoren GmbH & Co. KG Procédé et dispositif pour contrôler le fonctionnement d'un moteur à deux combustibles

Also Published As

Publication number Publication date
FI931066A (fi) 1993-09-14
DE59302482D1 (de) 1996-06-13
FI104012B (fi) 1999-10-29
FI104012B1 (fi) 1999-10-29
EP0560126B1 (fr) 1996-05-08
DE4207980A1 (de) 1993-09-16
FI931066A0 (fi) 1993-03-10

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