EP1293669A3 - Hydraulic vehicle steering pump driven by combustion engine - Google Patents

Hydraulic vehicle steering pump driven by combustion engine Download PDF

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Publication number
EP1293669A3
EP1293669A3 EP02019785A EP02019785A EP1293669A3 EP 1293669 A3 EP1293669 A3 EP 1293669A3 EP 02019785 A EP02019785 A EP 02019785A EP 02019785 A EP02019785 A EP 02019785A EP 1293669 A3 EP1293669 A3 EP 1293669A3
Authority
EP
European Patent Office
Prior art keywords
steering
steering pump
combustion engine
pressure medium
accumulator
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
EP02019785A
Other languages
German (de)
French (fr)
Other versions
EP1293669B1 (en
EP1293669A2 (en
Inventor
Ottmar Neuf
Rainer Dr. Bavendiek
Recep Macit
Jörg HÜBNER
Stefan Bauer
Berndt Hoffmockel
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.)
STILL GmbH
Original Assignee
STILL 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 STILL GmbH filed Critical STILL GmbH
Publication of EP1293669A2 publication Critical patent/EP1293669A2/en
Publication of EP1293669A3 publication Critical patent/EP1293669A3/en
Application granted granted Critical
Publication of EP1293669B1 publication Critical patent/EP1293669B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F04B23/00—Pumping installations or systems
    • F04B23/02—Pumping installations or systems having reservoirs

Abstract

Eine mobile Arbeitmaschine, insbesondere Flurförderzeug, weist einen Verbrennungsmotor (1) und eine davon angetriebene hydraulischen Lenkpumpe (2) zur Speisung mindestens eines Lenkaktuators (4) auf. Um die Energieverluste, die vom Lenksystem verursacht werden, zu minimieren, ist ein hydraulischer Speicher (7) an die Lenkpumpe (2) und den Lenkaktuator (4) angeschlossen und ist das spezifische Fördervolumen der Lenkpumpe (2) so bemessen, dass der Betrieb des Lenkaktuators (4) bei geringen Betriebsdrehzahlen des Verbrennungsmotors (1) das Einspeisen von Druckmittel aus der Lenkpumpe (2) und dem Speicher (7) erfordert und bei Überschreiten einer Schwellendrehzahl der Betrieb des Lenkaktuators (4) durch alleiniges Einspeisen von Druckmittel aus der Lenkpumpe (2) möglich ist. Das Volumen des Speichers (7) ist so bemessen, dass bei alleiniger Speisung des Lenkzylinders (4) durch Druckmittel aus dem vollen Speicher (7) ein mehrfaches Betätigen des Lenkaktuators (4) von Anschlag zu Anschlag möglich ist.

Figure 00000001
A mobile working machine, in particular an industrial truck, has an internal combustion engine (1) and a hydraulic steering pump (2) driven thereupon for feeding at least one steering actuator (4). In order to minimize the energy losses caused by the steering system, a hydraulic accumulator (7) to the steering pump (2) and the steering actuator (4) is connected and the specific delivery volume of the steering pump (2) is dimensioned such that the operation of the Lenkaktuators (4) at low operating speeds of the internal combustion engine (1) the injection of pressure medium from the steering pump (2) and the memory (7) requires and when exceeding a threshold speed, the operation of the steering actuator (4) by solely supplying pressure medium from the steering pump ( 2) is possible. The volume of the accumulator (7) is so dimensioned that when the steering cylinder (4) is fed solely by pressure medium from the full accumulator (7), multiple actuation of the steering actuator (4) is possible from stop to stop.
Figure 00000001
EP20020019785 2001-09-18 2002-09-04 Hydraulic vehicle steering pump driven by combustion engine Expired - Lifetime EP1293669B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001145992 DE10145992A1 (en) 2001-09-18 2001-09-18 Mobile work machine with an internal combustion engine and a hydraulic steering pump driven by it
DE10145992 2001-09-18

Publications (3)

Publication Number Publication Date
EP1293669A2 EP1293669A2 (en) 2003-03-19
EP1293669A3 true EP1293669A3 (en) 2005-04-13
EP1293669B1 EP1293669B1 (en) 2007-04-11

Family

ID=7699435

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020019785 Expired - Lifetime EP1293669B1 (en) 2001-09-18 2002-09-04 Hydraulic vehicle steering pump driven by combustion engine

Country Status (2)

Country Link
EP (1) EP1293669B1 (en)
DE (2) DE10145992A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010039509A1 (en) 2010-08-19 2012-02-23 Deere & Company Hydraulic arrangement
DE102010042098B4 (en) 2010-10-07 2021-01-07 Zf Friedrichshafen Ag Method for operating a drive train
CN102305222B (en) * 2011-08-24 2014-03-26 天津大学 Electro-hydraulic variable valve device with energy accumulator buffer function and energy storage method thereof
CN102913412A (en) * 2012-10-08 2013-02-06 潍坊优力动力配套有限公司 Hydraulic water pumping unit
CN105545135B (en) * 2015-02-28 2017-08-25 北京航空航天大学 Opportunity of combat internal weapon bays hatch door transient state actuating system based on fixed displacement motor principle
CN105644620A (en) * 2016-04-05 2016-06-08 南京林业大学 Energy-saving constant pressure type hydraulic power steering system
CN107246420A (en) * 2017-07-20 2017-10-13 南京讯联智能科技有限公司 It is a kind of to carry the integrated valve group of guide for blocking sender
CN109591886B (en) * 2018-11-30 2021-04-23 三一汽车起重机械有限公司 Vehicle auxiliary steering system and automatic driving vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB876727A (en) * 1958-10-29 1961-09-06 Clark Equipment Co Hydraulic power transmission systems
EP0525329A2 (en) * 1991-05-31 1993-02-03 Praxair Technology, Inc. Variable speed hydraulic pump system for liquid trailer
DE19955312A1 (en) * 1999-11-17 2001-06-13 Jungheinrich Ag Drive system for industrial trucks

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB876727A (en) * 1958-10-29 1961-09-06 Clark Equipment Co Hydraulic power transmission systems
EP0525329A2 (en) * 1991-05-31 1993-02-03 Praxair Technology, Inc. Variable speed hydraulic pump system for liquid trailer
DE19955312A1 (en) * 1999-11-17 2001-06-13 Jungheinrich Ag Drive system for industrial trucks

Also Published As

Publication number Publication date
EP1293669B1 (en) 2007-04-11
EP1293669A2 (en) 2003-03-19
DE10145992A1 (en) 2003-04-03
DE50209903D1 (en) 2007-05-24

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