EP1353070A2 - Système d'alimentation pneumatique - Google Patents

Système d'alimentation pneumatique Download PDF

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Publication number
EP1353070A2
EP1353070A2 EP03100463A EP03100463A EP1353070A2 EP 1353070 A2 EP1353070 A2 EP 1353070A2 EP 03100463 A EP03100463 A EP 03100463A EP 03100463 A EP03100463 A EP 03100463A EP 1353070 A2 EP1353070 A2 EP 1353070A2
Authority
EP
European Patent Office
Prior art keywords
piston
pump
working
drive
unit
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Withdrawn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
EP03100463A
Other languages
German (de)
English (en)
Other versions
EP1353070A3 (fr
Inventor
Jochen Linhart
Michael Fasold
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.)
Mann and Hummel GmbH
Original Assignee
Mann and Hummel GmbH
Filterwerk Mann and Hummel 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 Mann and Hummel GmbH, Filterwerk Mann and Hummel GmbH filed Critical Mann and Hummel GmbH
Publication of EP1353070A2 publication Critical patent/EP1353070A2/fr
Publication of EP1353070A3 publication Critical patent/EP1353070A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/05—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by internal-combustion engines
    • 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
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/002—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for driven by internal combustion engines
    • 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
    • F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
    • F04B45/053—Pumps having fluid drive

Definitions

  • the invention relates to a system for pneumatic pressure supply by consumers, especially by consumers in Vehicles according to the preamble of claim 1.
  • Pneumatic systems are in many forms, especially in Vehicles in use, some of them for control and positioning purposes even with relatively low negative or positive pressures is worked, for example for the actuation of locking systems in vehicles with relatively low negative pressures.
  • Low pressures of this magnitude predominate in the suction-side supply unit of via gas exchange control elements controlled reciprocating internal combustion engines and will tapped there and either directly to the vacuum supply, used by servo systems, for example, or temporarily stored. The latter, for example, in locking systems.
  • the invention has for its object a system of the beginning to further develop the kind mentioned in such a way that without essential A secure, sufficient pressure supply is required can be guaranteed.
  • the pump near the engine end portion of the respective intake manifold, so near its mouth on the internal combustion engine to arrange and there is in particular the Possibility to equip several suction pipes accordingly.
  • the pump it is also within the scope of the invention, avoiding short-circuit connections alternating suction pipes to connect with a pump arranged between them, as well as, if necessary, also associated vacuum or overpressure containers in the most direct possible assignment to the pump if necessary to arrange in such an intermediate area.
  • the solution according to the invention offers the further advantage that To design pump pistons as differential pistons, so that over pressure increases corresponding to different area ratios can be achieved.
  • the pump has a drive piston acted upon by the intake manifold pressure and one on the back and in the transition to the working piston has horizontal compensation volume for which a pressure level is given that between the limits of the pulsating Intake manifold pressure.
  • FIG. 3 is the internal combustion engine with 1 referred to as a reciprocating internal combustion engine Gas exchange control elements, not shown here, for example Inlet and outlet valves is equipped that the indicated Cylinders 2 are assigned and each in transition from the combustion chambers assigned to the cylinders 2 to the suction side Intake pipes 3 and the outlet side, not shown Exhaust ducts lie.
  • the suction pipes 3 form the transition of the suction-side supply unit, designated overall by 4 the internal combustion engine 1 on the internal combustion engine 1.
  • the suction-side supply unit 4 is also only greatly simplified and shown schematically and has the suction channels 3rd upstream a collection volume 5, which, according to its respective design, as an air collector, as a resonance tube, as a vibrating intake manifold or as a combined resonance vibrating intake manifold unit can be trained.
  • a collection volume 5 opens into the atmosphere indicated at 6, in which a charging unit may also be provided can be.
  • the piston unit 10 consists of a Drive piston 11 and a working piston 12, which in one Recess 13 of the pump housing 9 and are opposite Pump housing 9 delimit a compensation volume 14.
  • the drive piston 11 and the working piston 12 of the piston unit 10 are firmly connected and each have a Membrane 15 or 16 sealingly connected to the housing 9, wherein the membranes 15, 16 also provide elastic support form for the piston unit 10 through which the piston unit 10 is resiliently supported on a medium stroke position.
  • This middle stroke position is assumed in Fig. 1, and the piston unit 10 is stroke-adjustable from this middle stroke position as a function of pressure.
  • both the drive piston 11 and the working piston 12 each have two piston parts 17, 18 and 19, 20 comprise, of which the mutually facing piston parts 18th and 19 via a neck-like extension 21 of the piston part 18 are connected, which ends in a radial collar, which the Piston part 19 forms.
  • the associated membrane 15 or 16 clamped radially on the inside.
  • the radially outer bracing takes place compared to the axial, d.
  • H. in Lift direction multi-layer housing 9, which then to the suction pipe 3 engaging in its wall opening 8 Has mounting ring 22, between the and a middle Housing part 23, the membrane 15 is clamped.
  • On the housing part 23 is followed by a housing part 24 which encloses the working space 25 and between the and the middle housing part 23 the Membrane 16 is clamped.
  • the work space 25 is closed by a cover 26, the the supply connections 27 and 28 are assigned, of which the supply connection 27 in the exemplary embodiment the inlet side and the supply connection 28 the outlet-side connection forms, which is symbolically shown that this Supply connections in each case against their inlet and outlet direction are designed to block, for example by the arrangement of a check valve.
  • a vacuum container indicated at 29, can be assigned, and it can be via the supply connection 28 promoted to the atmosphere or on a pressure vessel become.
  • the membranes 15, 16 have seals in the exemplary embodiment also reset functions against a middle position. To the burdens can keep the membranes 15, 16 as small as possible it may be appropriate to the piston parts 17, 18 and 19, 20 radially on the outlet side opposite the membrane 15 or 16, so that there are wedge-shaped gaps radially outwards and sharp-edged loads on the membrane are avoided.
  • the working piston 12 and drive piston 11 are preferably axially braced against each other, the bracing can also be achieved via an adhesive connection.
  • the piston part 20 is provided with a central pin 30, which engages the neck 21, and in a corresponding manner it also proves to mutual centering regarding the piston parts 17 and 18 as appropriate, these centrically against each other support, as illustrated by approach 32.
  • the piston unit is also within the scope of the invention 10 form in one piece and spray the membranes what especially when the piston unit is constructed as a plastic represents a particularly practical and simple solution.
  • the membranes to mutual fixation within the framework of the clamping of the membranes it turns out to be useful to this radially inside and outside to be provided with coils 33 and 34, respectively, in corresponding Engage annular grooves of the piston parts, as illustrated in Fig. 1. It is illustrated in FIG. 2 for the membrane 15, this applies in the same way to the membrane 16.
  • the suction pipes 3 According to the work cycles of the internal combustion engine and the correspondingly timed gas supply results in the area the suction pipes 3 have a pulsation with clear upper and lower Pressure peaks, and there arise over the corresponding Actuation of the drive piston 11, the working surface in Embodiment a multiple of the working surface of the piston 12, stroke movements of the piston unit 10, the volume changes of the working space 25 entail, so that is sucked in via the supply connections 27 and 28 or is promoted.
  • the corresponding pump effects are general for gas production, but also for building up underpressure or overpressure to use like this in terms of building negative pressure illustrated by suction from the vacuum container 29 becomes.
  • the compensation volume 14 it is particularly useful for this purpose, for the compensation volume 14 to create a pressure level between the upper and lower limit of the pulsating intake manifold pressure, whereby for this, what is not shown, the connection of the compensation volume 14 with an area of the suction-side supply unit 4 proves to be advantageous in which a corresponding pressure level is as uniform as possible, which is about corresponds to the mean intake manifold pressure.
  • the Connection to the collection volume 5 5. Because the pulsation effects also occur in supercharged internal combustion engines the desired pumping function for the system even with charged ones Internal combustion engines reachable.
  • the piston unit is used to limit the stroke in the direction of the intake manifold 3 a stop limit assigned in the embodiment by indicated, housing-side, in the stroke of the Drive piston 11 lying approaches 35 is formed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Reciprocating Pumps (AREA)
  • Valve Device For Special Equipments (AREA)
EP03100463A 2002-04-11 2003-02-26 Système d'alimentation pneumatique Withdrawn EP1353070A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10215860A DE10215860B4 (de) 2002-04-11 2002-04-11 System zur pneumatischen Druckversorgung von Verbrauchern
DE10215860 2002-04-11

Publications (2)

Publication Number Publication Date
EP1353070A2 true EP1353070A2 (fr) 2003-10-15
EP1353070A3 EP1353070A3 (fr) 2005-08-31

Family

ID=28051241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03100463A Withdrawn EP1353070A3 (fr) 2002-04-11 2003-02-26 Système d'alimentation pneumatique

Country Status (2)

Country Link
EP (1) EP1353070A3 (fr)
DE (1) DE10215860B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006056256A3 (fr) * 2004-11-19 2006-06-29 Bergner Verbindungstechnik Gmb Unite hydraulique et procede pour mettre a disposition un fluide hydraulique sous pression

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190512517A (en) * 1905-06-16 1906-05-03 Charles Henry Bryant Improvements in Pumps.
US4096692A (en) * 1976-04-15 1978-06-27 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Air-pump system for reciprocating engines
DE2933905A1 (de) * 1979-08-22 1981-03-26 Pierburg GmbH & Co KG, 41460 Neuss Drucklufterzeuger.
US4479765A (en) * 1982-09-29 1984-10-30 General Motors Corporation Exhaust gas operated vacuum pump assembly
DE4010938A1 (de) * 1989-04-15 1990-10-18 Volkswagen Ag Einrichtung zur druckversorgung druckmittelbetaetigter servosysteme
US5279504A (en) * 1992-11-02 1994-01-18 Williams James F Multi-diaphragm metering pump
DE19527628A1 (de) * 1995-07-28 1997-01-30 Bosch Gmbh Robert Zweitakt-Brennkraftmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006056256A3 (fr) * 2004-11-19 2006-06-29 Bergner Verbindungstechnik Gmb Unite hydraulique et procede pour mettre a disposition un fluide hydraulique sous pression

Also Published As

Publication number Publication date
DE10215860A1 (de) 2003-10-23
EP1353070A3 (fr) 2005-08-31
DE10215860B4 (de) 2011-07-07

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