EP0553680A1 - Dispositif d'injection pour moteurs à compression d'air - Google Patents

Dispositif d'injection pour moteurs à compression d'air Download PDF

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Publication number
EP0553680A1
EP0553680A1 EP93100694A EP93100694A EP0553680A1 EP 0553680 A1 EP0553680 A1 EP 0553680A1 EP 93100694 A EP93100694 A EP 93100694A EP 93100694 A EP93100694 A EP 93100694A EP 0553680 A1 EP0553680 A1 EP 0553680A1
Authority
EP
European Patent Office
Prior art keywords
pump
injection
plug
roller tappet
injection line
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Withdrawn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
EP93100694A
Other languages
German (de)
English (en)
Inventor
Heribert Dipl.-Ing. Kubis
Klaus Dr.-Ing. Wiebicke
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.)
MAN Truck and Bus SE
Original Assignee
MAN Nutzfahrzeuge AG
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 MAN Nutzfahrzeuge AG filed Critical MAN Nutzfahrzeuge AG
Publication of EP0553680A1 publication Critical patent/EP0553680A1/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Withdrawn legal-status Critical Current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
    • 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
    • F02M59/44—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 an injection device according to the preamble of the claim.
  • So-called plug-in pumps are used to comply with a predetermined injection law.
  • a plug-in pump is assigned to each cylinder of an internal combustion engine and is connected to an injection nozzle via an injection line.
  • a roller tappet of the plug-in pump is driven by a camshaft, which also serves to control the gas exchange valves.
  • each roller tappet of the plug-in pump is assigned its own pump cam on this camshaft.
  • the invention has for its object to avoid the disadvantage of a long injection line as much as possible without a standard plug-in pump has to be changed significantly.
  • the push-in pump is stretched by the pressure piece to such an extent that a pressure connection thereof is connected to the injection nozzle by means of an injection line of the smallest possible length. It is particularly important to note that the standard plug-in pump only has to be changed by extending a central part of the pump housing and by inserting the pressure piece between the roller tappet and the pump piston. Due to the very short injection line and the small fuel volume contained therein, a desired injection law can be realized much more precisely.
  • the short injection line shortens the running time of a pressure wave coming from the plug-in pump, so that a pre-injection can be realized.
  • the small volume of fuel stored in the short injection line also allows high injection pressures, since the effect of the compressibility of the fuel can also be kept low due to the small storage volume. The proportion of the drive power of the plug-in pump which is due to the elastic deformation of the injection line per injection process is minimized.
  • each cylinder 1 of an internal combustion engine is assigned an insert pump 2, which is connected to an injection nozzle 4 via an injection line 3.
  • the plug-in pump 2 is driven by a camshaft 5, which at the same time serves to drive the gas exchange valves, which are not shown in detail.
  • a pump cam 7 is arranged, which cooperates with a roller tappet 8, which is guided in an axially movable manner in a pump housing 9.
  • roller tappet 8 passes its movement on to a pump piston 10.
  • a pressure piece 11 is now inserted between the roller tappet 8 and the pump piston 10, as a result of which the standard plug-in pump 2 can be extended solely by the extension of the pump housing 9; further changes are not necessary.
  • the uncomplicated elongation of the plug-in pump 2 leads to the injection line 3 being as short as possible.
  • the injection line 3 deviates from a straight line as the shortest connection between two points due to a slight curvature, but this is necessary in order to compensate for elongation and manufacturing tolerances of the injection line 3. Nevertheless, it can easily be seen that this smallest possible length of the injection line 3 minimizes its storage volume, shortens the running time of pressure waves and reduces the deformation work of the lines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP93100694A 1992-01-29 1993-01-19 Dispositif d'injection pour moteurs à compression d'air Withdrawn EP0553680A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19924202396 DE4202396A1 (de) 1992-01-29 1992-01-29 Einspritzvorrichtung fuer luftverdichtende brennkraftmaschinen
DE4202396 1992-01-29

Publications (1)

Publication Number Publication Date
EP0553680A1 true EP0553680A1 (fr) 1993-08-04

Family

ID=6450472

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93100694A Withdrawn EP0553680A1 (fr) 1992-01-29 1993-01-19 Dispositif d'injection pour moteurs à compression d'air

Country Status (3)

Country Link
EP (1) EP0553680A1 (fr)
JP (1) JPH05280443A (fr)
DE (1) DE4202396A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2284447A (en) * 1993-12-01 1995-06-07 Kloeckner Humboldt Deutz Ag Mounting fuel injection pumps on V-engines
DE4426635A1 (de) * 1994-07-27 1996-02-01 Kloeckner Humboldt Deutz Ag Einspritzpumpenantrieb
WO1996009470A1 (fr) 1994-09-19 1996-03-28 Motoren-Werke Mannheim Aktiengesellschaft Carter intermediaire pour moteur a combustion interne
DE19719265A1 (de) * 1997-05-07 1998-11-12 Deutz Ag Einspritzsystem einer Brennkraftmaschine
WO2015177031A1 (fr) * 2014-05-21 2015-11-26 Renault S.A.S Moteur a combustion interne pour un vehicule automobile

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19508445B4 (de) * 1995-03-09 2004-07-08 Deutz Ag Kraftstoffeinspritzvorrichtung für eine selbstzündende Brennkraftmaschine
US5775203A (en) * 1997-01-28 1998-07-07 Cummins Engine Company, Inc. High pressure fuel pump assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB358671A (en) * 1929-10-24 1931-10-15 Knut Jonas Elias Hesselman Improvements in internal combustion engines of the solid fuel-injection type
GB791482A (en) * 1955-09-23 1958-03-05 Petters Ltd Improvements in or relating to compression ignition engines
DE1079888B (de) * 1956-06-07 1960-04-14 Kloeckner Humboldt Deutz Ag Schlitzgesteuerte Zweitakt-Einspritzbrennkraftmaschine mit in V-Form angeordneten Zylinderreihen
EP0066718A1 (fr) * 1981-05-18 1982-12-15 CIPA Costruzione Iniettori Pompe Accessori S.p.A. Unité pompe injecteur pour moteurs diesel

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE569042C (de) * 1933-02-06 Hesselman Motor Corp Ltd Foerdereinrichtung fuer leichtfluechtige, fluessige Brennstoffe
DE572581C (de) * 1929-12-21 1933-03-18 Maschf Augsburg Nuernberg Ag Antrieb der Brennstoffpumpen von Verbrennungskraftmaschinen
DE694245C (de) * 1935-04-11 1940-07-27 Junkers Flugzeug -und Motorenwerke Akt.-Ges. in Dessau. Anordnung der Einspritzpumpen von Brennkraftmaschinen
US2180475A (en) * 1937-12-13 1939-11-21 Ljungstrom Olof Fuel injector pump
FR2235291B1 (fr) * 1973-06-26 1977-09-16 Semt
DE2461309A1 (de) * 1973-12-26 1975-07-10 Isuzu Motors Ltd Brennstoffeinspritzvorrichtung
AT364965B (de) * 1978-12-19 1981-11-25 Steyr Daimler Puch Ag Nockenwelle fuer einspritzbrennkraftmaschinen
DE3327399A1 (de) * 1983-07-29 1985-02-21 Robert Bosch Gmbh, 7000 Stuttgart Pumpeduese fuer die kraftstoffeinspritzung bei brennkraftmaschinen
DE3935883C2 (de) * 1989-10-27 1996-08-01 Kloeckner Humboldt Deutz Ag Viertakt-Dieselbrennkraftmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB358671A (en) * 1929-10-24 1931-10-15 Knut Jonas Elias Hesselman Improvements in internal combustion engines of the solid fuel-injection type
GB791482A (en) * 1955-09-23 1958-03-05 Petters Ltd Improvements in or relating to compression ignition engines
DE1079888B (de) * 1956-06-07 1960-04-14 Kloeckner Humboldt Deutz Ag Schlitzgesteuerte Zweitakt-Einspritzbrennkraftmaschine mit in V-Form angeordneten Zylinderreihen
EP0066718A1 (fr) * 1981-05-18 1982-12-15 CIPA Costruzione Iniettori Pompe Accessori S.p.A. Unité pompe injecteur pour moteurs diesel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 8, no. 197 (M-324)(1634) 11. September 1984 & JP-A-59 87 264 ( YANMAR DIESEL ) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2284447A (en) * 1993-12-01 1995-06-07 Kloeckner Humboldt Deutz Ag Mounting fuel injection pumps on V-engines
GB2284447B (en) * 1993-12-01 1998-02-25 Kloeckner Humboldt Deutz Ag A v-type internal combustion engine
DE4426635A1 (de) * 1994-07-27 1996-02-01 Kloeckner Humboldt Deutz Ag Einspritzpumpenantrieb
WO1996009470A1 (fr) 1994-09-19 1996-03-28 Motoren-Werke Mannheim Aktiengesellschaft Carter intermediaire pour moteur a combustion interne
DE19719265A1 (de) * 1997-05-07 1998-11-12 Deutz Ag Einspritzsystem einer Brennkraftmaschine
WO2015177031A1 (fr) * 2014-05-21 2015-11-26 Renault S.A.S Moteur a combustion interne pour un vehicule automobile

Also Published As

Publication number Publication date
DE4202396A1 (de) 1993-08-05
JPH05280443A (ja) 1993-10-26

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