EP1267077A1 - Zahnradpumpe mit drei Wellen - Google Patents

Zahnradpumpe mit drei Wellen Download PDF

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Publication number
EP1267077A1
EP1267077A1 EP02291491A EP02291491A EP1267077A1 EP 1267077 A1 EP1267077 A1 EP 1267077A1 EP 02291491 A EP02291491 A EP 02291491A EP 02291491 A EP02291491 A EP 02291491A EP 1267077 A1 EP1267077 A1 EP 1267077A1
Authority
EP
European Patent Office
Prior art keywords
chamber
chambers
intake
gear
pressure
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
EP02291491A
Other languages
English (en)
French (fr)
Other versions
EP1267077B1 (de
Inventor
Guillaume Adam
Jean Cros
Gonzalo Portela Garnika
Denis Reverseau
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Publication of EP1267077A1 publication Critical patent/EP1267077A1/de
Application granted granted Critical
Publication of EP1267077B1 publication Critical patent/EP1267077B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/02—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for several machines or pumps connected in series or in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms

Definitions

  • the present invention relates to the field of pumps. volumetric, i.e. whose theoretical flow is proportional to the speed, used in particular for the lubrication of combustion engines internal of road vehicles.
  • a positive displacement double gear pump comprising three pinions of pumping defining two intake chambers and two intake chambers discharge, a central supply duct connected to two ducts admission into the first and second respectively intake chamber, and a central discharge duct joining two discharge ducts respectively from the first and the second delivery chamber.
  • volumetric having more than three pinions defining between them more two intake chambers and two discharge chambers.
  • This type of pump is commonly used in systems such as than internal combustion engines of motor vehicles, the lubrication requires high flow and pressure from low revs.
  • the three gears define two by two, two intake chambers and two delivery chambers.
  • the two gears operate in parallel, driving two separate oil flows.
  • the advantage of this operating mode is to double the flow rate of a conventional single-gear pump, by adding only the volume of a pinion.
  • a second operating mode there can be only one intake chamber and a single oil discharge chamber to the outside, the two other rooms being connected, so that the oil discharged by a first gear ensures the supply of the second.
  • An oil pump must ensure in good conditions the engine lubrication, over its entire speed and temperature range. Through elsewhere, it must be compact, silent, and consume the minimum energy, at both low and high temperatures.
  • the object of the invention is to obtain high flow rates in a positive displacement pump with double gears, while keeping a size scaled down.
  • the pump comprises a first communication valve between the first intake chamber and the second discharge chamber, and a second communication valve between the second intake chamber and the first intake chamber discharge.
  • the pump has a single communication valve between the first chamber on the one hand, and between the second intake chamber and the first discharge chamber of other go.
  • the invention also relates to a method for controlling a double gear positive displacement pump with two chambers inlet and two discharge chambers depending on its pressure discharge.
  • the pump has a first mode of operation in which the intake chambers and the repression are not in communication, and a second mode of operation in which part of the flow discharged by a second gear is returned to the intake chamber of the first gear.
  • the pump behaves like a conventional pump with two gears operating in parallel, i.e. with two chambers intake 4, 7 and two discharge chambers 6, 8.
  • the two valves 17, 18 are closed.
  • the oil enters through the central supply duct 9, and gets distributes between the two intake ducts 11, 12.
  • the two pinions 1 and 2 propel the oil to the first discharge chamber 6, and the two sprockets 2 and 3 propel the oil to the second delivery chamber 8. It is then forced back through the conduits 14 and 16 towards the central discharge 13.
  • the first valve 17 opens gradually. At least part of the flow from the second chamber discharge 8 being returned to the first intake chamber 4, the pump is in a first pressure regeneration phase (cf. figure 2), where the increase in pressure as a function of the speed is more lower than between 0 and S1.
  • the first valve 17 is fully open and close the intake duct 11.
  • the pressure supplied by the pump continues to rise with the engine speed. But all the flow of the second gear 2, 3 enters the first intake chamber 4 (at volumetric efficiency), at a pressure identical to that of the second delivery chamber 8, except for pressure losses. Only one gear of the pump delivers, so that the energy consumption is almost divided by two, while the exhaust pressure of the pump increases more faster depending on the speed than between S1 and S2.
  • the pump proposed by the invention is therefore a double pump classic gear with the particularity of having means orientation of the oil making it possible to short-circuit one of the discharge to the other intake chamber at a pressure equal to that of the discharge.
  • valve 19 In FIG. 6, corresponding to the first operating mode, the valve 19 is completely closed. In Figure 7, corresponding to second operating mode, it partially frees the passage between the second discharge chamber and the first intake chamber. On the Figure 8, in accordance with the third operating mode, this passage is completely open, establishing in chamber 4 the pressure of discharge. Finally, in Figure 9, the valve clears the entry of the second inlet duct 12, and part of the flow from the first chamber of delivery 6 is returned to the second intake chamber 7. Thanks to this arrangement, the single valve 19 therefore alone performs the functions previously provided by the two valves 17, 18.
  • valve (s) proposed by the invention allows (tent) short-circuit one of the pump's outlets towards the intake to a pressure equal to that of the discharge. This measure saves power consumed by the pump in the operating phases of this one where the pressure is high and where the engine does not need all the pump flow, for example when the engine is cold.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
EP20020291491 2001-06-15 2002-06-14 Zahnradpumpe mit drei Wellen Expired - Lifetime EP1267077B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0107834A FR2826069B1 (fr) 2001-06-15 2001-06-15 Pompe volumetrique a double engrenage
FR0107834 2001-06-15

Publications (2)

Publication Number Publication Date
EP1267077A1 true EP1267077A1 (de) 2002-12-18
EP1267077B1 EP1267077B1 (de) 2008-02-27

Family

ID=8864341

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020291491 Expired - Lifetime EP1267077B1 (de) 2001-06-15 2002-06-14 Zahnradpumpe mit drei Wellen

Country Status (3)

Country Link
EP (1) EP1267077B1 (de)
DE (1) DE60225207T2 (de)
FR (1) FR2826069B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2397345A (en) * 2003-01-17 2004-07-21 Dana Automotive Ltd A Triple Gear Pump
CN100419267C (zh) * 2004-09-22 2008-09-17 株式会社Tbk 串联泵的无载运行装置
CN102926997A (zh) * 2012-10-28 2013-02-13 张意立 一种法兰内螺纹锥形弹簧齿轮泵
EP2634430A1 (de) 2012-02-28 2013-09-04 Maag Pump Systems AG Getriebepumpenanordnung
CN107366619A (zh) * 2016-05-13 2017-11-21 王冬 碎化气泡防失压齿轮油泵

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2536736C1 (ru) * 2013-11-07 2014-12-27 Закрытое Акционерное Общество "Новомет-Пермь" Шестеренный насос для перекачки жидкости

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE549734A (de) *
DE674380C (de) * 1937-02-18 1939-04-13 Ehrich & Graetz Akt Ges Regeleinrichtung fuer Brennstoffoerderpumpen
US2665637A (en) * 1947-05-07 1954-01-12 Borg Warner Pumping system
US4502845A (en) * 1983-03-24 1985-03-05 General Motors Corporation Multistage gear pump and control valve arrangement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE549734A (de) *
DE674380C (de) * 1937-02-18 1939-04-13 Ehrich & Graetz Akt Ges Regeleinrichtung fuer Brennstoffoerderpumpen
US2665637A (en) * 1947-05-07 1954-01-12 Borg Warner Pumping system
US4502845A (en) * 1983-03-24 1985-03-05 General Motors Corporation Multistage gear pump and control valve arrangement

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2397345A (en) * 2003-01-17 2004-07-21 Dana Automotive Ltd A Triple Gear Pump
CN100419267C (zh) * 2004-09-22 2008-09-17 株式会社Tbk 串联泵的无载运行装置
EP2634430A1 (de) 2012-02-28 2013-09-04 Maag Pump Systems AG Getriebepumpenanordnung
CN102926997A (zh) * 2012-10-28 2013-02-13 张意立 一种法兰内螺纹锥形弹簧齿轮泵
CN102926997B (zh) * 2012-10-28 2016-03-16 张意立 一种法兰内螺纹锥形弹簧齿轮泵
CN107366619A (zh) * 2016-05-13 2017-11-21 王冬 碎化气泡防失压齿轮油泵

Also Published As

Publication number Publication date
FR2826069B1 (fr) 2004-03-12
DE60225207D1 (de) 2008-04-10
EP1267077B1 (de) 2008-02-27
FR2826069A1 (fr) 2002-12-20
DE60225207T2 (de) 2009-03-26

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