EP1318295A1 - Dispositif d'injection de carburant et compresseur d'air - Google Patents

Dispositif d'injection de carburant et compresseur d'air Download PDF

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Publication number
EP1318295A1
EP1318295A1 EP02024779A EP02024779A EP1318295A1 EP 1318295 A1 EP1318295 A1 EP 1318295A1 EP 02024779 A EP02024779 A EP 02024779A EP 02024779 A EP02024779 A EP 02024779A EP 1318295 A1 EP1318295 A1 EP 1318295A1
Authority
EP
European Patent Office
Prior art keywords
piston
fuel
fuel injection
injection device
pressure generating
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Withdrawn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
EP02024779A
Other languages
German (de)
English (en)
Inventor
Ernst Kuhlen
Oliver Dr. Grässel
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.)
Pierburg GmbH
Original Assignee
Pierburg 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 Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP1318295A1 publication Critical patent/EP1318295A1/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Withdrawn legal-status Critical Current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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/02—Engines with reciprocating-piston pumps; Engines with crankcase pumps
    • F02B33/06—Engines with reciprocating-piston pumps; Engines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type

Definitions

  • the invention relates to a fuel injection device for Internal combustion engines.
  • the fuel injection device is for Suitable for two-stroke engines.
  • Known fuel injection devices have a fuel pump and a Pressure generation device on. With the help of the fuel pump Fuel is supplied to the combustion chamber of the internal combustion engine. To one atomization of the fuel in the combustion chamber is as fine as possible achieve is the pressure generating device, such as a Air compressor, provided. Due to the fine fuel atomization, the Engine power can be increased. Furthermore, this is a complete one Combustion so that pollutant emissions are reduced.
  • Fuel is supplied to the combustion chamber of the internal combustion engine.
  • the pressure generating device such as a Air compressor
  • an electrical one Fuel pump provided.
  • the compressor for generating the compressed air is for example flanged to the motor housing and is over the Internal combustion engine driven.
  • the provision of an electrical Fuel pump has the disadvantage that especially in motorcycles and Small cars have low electrical outputs. So it is not possible to deliver the fuel to the combustion chamber at high pressure.
  • the object of the invention is to provide a fuel injection device for To create internal combustion engines with which high fuel pressures are achieved can.
  • the electric fuel pump is a mechanical one Fuel pump replaced.
  • a delivery element of the fuel pump and a Compression element of the pressure generating device connected together.
  • This is a common drive with the fuel pump and Pressure generation facility possible.
  • Fuel pump provided a piston pump, the piston as a delivery element for the fuel.
  • Such mechanical piston pumps can be high Generates pressures of more than four, in particular more than five bar become. Because the drive of the fuel pump and the pressure generating device together in particular through a mechanical connection with the internal combustion engine and therefore no electrical energy Operating the fuel pump is necessary, the invention Fuel injection device also for engines or small motor vehicles, where there is insufficient electrical energy available become.
  • This is for driving the fuel pump and the pressure generating device Delivery element of the fuel pump and / or the compression element of the Pressure generating device preferably with a drive element connected.
  • the drive element is with a shaft of the internal combustion engine connected so that the drive of the fuel pump and the pressure generating device exclusively mechanically, without the need for feeding electrical energy.
  • the drive element is for example around a V-belt leading to the alternator Shaft is connected.
  • Fuel pump as a piston pump with a first serving as a delivery element Piston
  • the pressure generating device as a piston pump
  • the second piston is in one Compression room for compressing air and for supplying the compressed air arranged in the combustion chamber. Both promoting and compressing the fuel as well as the air is thus done by moving of the first and second pistons. Since the pistons are moving linearly, the two pistons are preferably driven by a cam or by a crankshaft.
  • the drive element is this Embodiment then preferably around a piston rod or another rigid connecting element that slides on the cam, for example, so that the Rotary movement of the camshaft is a linear movement of the two pistons causes.
  • the two pistons can be connected in parallel or in series, the two pistons are always connected to each other for common drive.
  • the figure shows a schematic sectional view of an inventive Fuel injection device.
  • the fuel injection device due to the compact design is particularly suitable for two-stroke engines, has a fuel pump 10 and a pressure generating device 12.
  • the fuel pump 10 has one cylindrical cavity 14 in which a piston 16 as a conveying element is arranged movably. By moving the drawing up and down in the drawing Piston 16 is sucked in by fuel through an inlet channel 18 in the piston chamber 14 or an ejection of fuel from the piston chamber 14 through an outlet duct 20.
  • the inlet duct is with a fuel tank and the exhaust duct with the combustion chamber of the internal combustion engine connected.
  • the inlet channel 18 and the outlet channel 20 each have a Valve 22 or 24 defining the flow direction.
  • the first piston 16 will driven via a first piston rod 26. This is the first piston rod 26 with a second piston 28, which is the compression element the pressure generating device 12 is connected.
  • the second piston 28 is connected to a second piston rod 30.
  • the two pistons are 16, 28 thus firmly connected to each other via the first piston rod 26, so that a Moving the second piston 28 always also to move the first Piston 16 leads.
  • the two pistons 16, 28 are concentric with one another arranged.
  • the two piston rods are also preferably 26.30 arranged concentrically to one another and to the pistons 16, 28.
  • the pressure generating device 12 has a cylindrical cavity 32, in which the second piston 28 is slidably disposed. With the cavity 32 is an inlet duct 34 through which air is drawn in, and an outlet duct 36, through which the air in the direction of the combustion chamber with high pressure of about four to six bar is funded.
  • the two channels 34.36 each have a valve 38 or 40 which defines the direction of flow.
  • the second piston rod 30, which acts as the drive element of the second piston 28 and via the first piston rod 26 with the second piston 28 connected first piston 16 is used via a camshaft 42 driven. Rotation of the camshaft 42 about the axis 44 takes place Moving the second piston rod or the drive element 30 in the direction arrow 46. This causes the two pistons to move accordingly 16, 28 also in the direction of arrow 46. This leads to suction or Ejection of fuel or air with the aid of the fuel pump 10 or Pressure generating device 12.
  • a spring 54 arranged the second Piston rod 30 towards cam 48, i.e. down in the drawing, suppressed.
  • the housing 50 is designed in such a way that that both the fuel pump 10 and the pressure generating device 12 are arranged in a common housing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)
EP02024779A 2001-12-04 2002-11-07 Dispositif d'injection de carburant et compresseur d'air Withdrawn EP1318295A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001159508 DE10159508A1 (de) 2001-12-04 2001-12-04 Kraftstoffeinspritz-Einrichtung
DE10159508 2001-12-04

Publications (1)

Publication Number Publication Date
EP1318295A1 true EP1318295A1 (fr) 2003-06-11

Family

ID=7707981

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02024779A Withdrawn EP1318295A1 (fr) 2001-12-04 2002-11-07 Dispositif d'injection de carburant et compresseur d'air

Country Status (2)

Country Link
EP (1) EP1318295A1 (fr)
DE (1) DE10159508A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE415058C (de) * 1925-06-13 Cecil Hughes Gemischpumpe
DE887430C (de) * 1951-06-14 1953-08-24 Rudolf Dr-Ing Wille Einspritzvorrichtung fuer Druckluftbrennstoffeinspritzung
EP0224142A2 (fr) * 1985-11-21 1987-06-03 Ernst Marcus Moteur à combustion interne à piston libre
WO2000040845A2 (fr) * 1999-01-07 2000-07-13 Daniel Drecq Moteur compresse a combustion interne a deux ou a quatre temps
WO2001088350A1 (fr) * 2000-05-17 2001-11-22 Baschieri & Pellagri S.P.A. Modele ameliore de moteur deux-temps a combustion interne a rendement accru et faible niveau d'emission de gaz polluants

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE415058C (de) * 1925-06-13 Cecil Hughes Gemischpumpe
DE887430C (de) * 1951-06-14 1953-08-24 Rudolf Dr-Ing Wille Einspritzvorrichtung fuer Druckluftbrennstoffeinspritzung
EP0224142A2 (fr) * 1985-11-21 1987-06-03 Ernst Marcus Moteur à combustion interne à piston libre
WO2000040845A2 (fr) * 1999-01-07 2000-07-13 Daniel Drecq Moteur compresse a combustion interne a deux ou a quatre temps
WO2001088350A1 (fr) * 2000-05-17 2001-11-22 Baschieri & Pellagri S.P.A. Modele ameliore de moteur deux-temps a combustion interne a rendement accru et faible niveau d'emission de gaz polluants

Also Published As

Publication number Publication date
DE10159508A1 (de) 2003-06-18

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