WO2004043725A1 - Verfahren zur schwingungsdämpfung - Google Patents
Verfahren zur schwingungsdämpfungInfo
- Publication number
- WO2004043725A1 WO2004043725A1 PCT/EP2003/011862 EP0311862W WO2004043725A1 WO 2004043725 A1 WO2004043725 A1 WO 2004043725A1 EP 0311862 W EP0311862 W EP 0311862W WO 2004043725 A1 WO2004043725 A1 WO 2004043725A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bearing elements
- motor vehicle
- engine
- stiffnesses
- transmission
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
- F01N13/1811—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
- F01N13/1822—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration for fixing exhaust pipes or devices to vehicle body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
- B60K13/04—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning exhaust
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
- B60K5/12—Arrangement of engine supports
- B60K5/1283—Adjustable supports, e.g. the mounting or the characteristics being adjustable
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/42—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing
- F16F1/44—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing loaded mainly in compression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
Definitions
- the present invention relates to a method for damping vibrations of a vibration system fastened to a motor vehicle by means of a number of bearing elements, which comprises an exhaust system, engine and / or transmission.
- Exhaust systems are generally attached to the underbody of a motor vehicle by means of a number of ring-shaped rubber elements, the rubber elements being suspended in holding elements which are molded onto both the exhaust system and the underbody.
- these rubber elements have the disadvantage that their elasticity or rigidity, depending on the design, can only assume a certain value and therefore only represents a compromise for different operating states of the motor vehicle.
- the material of the rubber elements is subject to aging, which adversely affects their shape and elasticity.
- an elastic bearing for a vibration-insulated mounting of an exhaust system on a vehicle floor is known.
- This bearing is designed to be suspended and has a pressure chamber which can be pressurized with compressed air and which is bounded at the bottom by an elastic element.
- the elastic element bulges outward as a function of the air pressure within the pressure chamber, as a result of which a bearing eye formed thereon can be positioned for the exhaust system as a function of the signal from a position sensor.
- the height of the air pressure within the pressure chamber or the degree of curvature of the elastic element also influences the elasticity of the bearing within certain limits.
- the individual bearing elements of the exhaust system, the engine and / or the transmission have variable stiffnesses which are set as a function of one another and as a function of the operating conditions of the motor vehicle.
- the operating states of the motor vehicle are expediently defined on the basis of specific speed ranges of the engine and / or transmission. This is because the vibrations occurring on the vibration system can be derived from the specific speed ranges that prevail during the various operating states, such as idle operation, city operation, highway operation, highway operation or full load operation, and then damped, for example, weakly or strongly, depending on the specification.
- the stiffnesses of the bearing elements are changed or switched back and forth at short intervals, so that the resonances of the vibration system occurring in certain operating states of the motor vehicle are actively suppressed or even excited. This measure is particularly effective if the individual bearing elements are controlled in different ways.
- the rigidity of the bearing elements are also advantageously dependent on various chassis functions of the motor vehicle. So that can influences on the vibration system caused by bumps in the road and accelerations or decelerations of the motor vehicle can be countered.
- the rigidity of the bearing elements is also particularly advantageously influenced by the driver.
- the driver of the motor vehicle can thus choose whether, for example, a predominantly strong vibration damping or a soft suspension of the vibration system according to a first comfort setting, a predominantly weak vibration damping or a hard suspension of the vibration system according to a second sport setting or a vibration damping according to a third special setting or a suspension with active resonance damping of the vibration system.
- a predominantly strong vibration damping or a soft suspension of the vibration system according to a first comfort setting
- a predominantly weak vibration damping or a hard suspension of the vibration system according to a second sport setting or a vibration damping according to a third special setting or a suspension with active resonance damping of the vibration system can also be combined with each other.
- the rigidity of the bearing elements is set in a specific sequence for the respective vibration system, this contributes to particularly flexible vibration damping. Because the vibrations of the vibration system propagate according to a certain characteristic, which characteristic is based on the specific order of adjustment.
- the stiffnesses of the bearing elements are set by the bearing elements being made upright and having an elastic element with a fluid or a gel, the viscosity of which is changed as a function of an electrical voltage. Since the rigidity of the bearing elements can thus be set within wide limits at any time, the vibration system can always be damped in an optimal manner. In addition, there is no undesirable change in the position of the vibration system.
- the stiffnesses of the bearing elements are set in that the individual bearing elements are controlled by a common electrical device which is connected to the control unit of the motor vehicle.
- Fig. 1 is a schematic representation of a motor vehicle with an existing exhaust system, engine and transmission vibration system;
- FIG. 2 shows a schematic illustration of a standing bearing element for fastening the vibration system from FIG. 1 to the motor vehicle
- FIG 3 shows three examples of different settings of the bearing elements in different operating states of the motor vehicle.
- the motor vehicle 1 shown in FIG. 1 has a vibration system 2 which comprises an exhaust system 3, an engine 4 and a transmission 5, the exhaust system 3, the engine 4 and the transmission 5 being rigidly connected to one another.
- the vibration system 2 has a very complex vibration behavior due to the variable speed of the motor 3 and gear 4 during operation of the motor vehicle and due to its geometric configuration.
- the vibration system 2 is fastened at various points by a number of bearing elements 6 in the engine compartment or on the underbody of the motor vehicle 1.
- the bearing elements 6 are controlled via a common electrical device 7, which changes the rigidity of the bearing elements 6 as a function of one another and as a function of the operating states of the motor vehicle 1.
- the electrical device receives the operating states of motor vehicle 1 directly from control unit 8 of motor vehicle 1.
- the bearing elements 6 are formed standing according to FIG. 2 by having an elastic element 9, which is cylindrical, with its underside rests on a cup-shaped holder 10 molded onto the motor vehicle and with its top one against the exhaust system 3, the engine 4 or the gear 5 of the vibration system 2 carries angled bracket 11 formed thereon.
- the elastic element 9 contains a fluid, the viscosity of which can be changed by the application of an electrical voltage, so that the damping between the holder 10 and the bracket 11 or between the body of the motor vehicle 1 and the vibration system 2 can be influenced accordingly.
- the viscosity of the elastic element 9 ie the rigidity of the bearing element 6 can therefore be varied within wide limits at any time.
- FIG. 3 shows three examples of possible settings of the bearing elements 6 as a function of certain operating states of the motor vehicle 1 or speed ranges of the engine 4 and transmission 5.
- a comfort setting of the bearing elements 6 is shown, which provides that their stiffness in idle mode, in city mode and in country road mode is low for strong vibration damping or for a "soft" suspension of the vibration system 2, while their stiffness in Motorway operation and in full load operation for a weak vibration damping or for a "hard” suspension of the vibration system 2 is high.
- a sport setting of the bearing elements 6 is shown, the stiffness of which is low only in idle mode for strong vibration damping or for a "soft" suspension of the vibration system 2 and in city mode, in highway mode, in motorway mode and in full load mode for one weak vibration damping or for a "hard” suspension of the vibration system 2 is high.
- a comfort setting of the bearing elements 6 is combined with a special setting for active resonance damping.
- This special setting provides that the stiffnesses of the bearing elements 6 in city mode and in highway mode when a resonance occurs are switched back and forth in short time intervals between the "soft" suspension and the "hard” suspension of the vibration system 2 in order to suppress the resonance ,
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Health & Medical Sciences (AREA)
- Child & Adolescent Psychology (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03810949A EP1572485B1 (de) | 2002-11-12 | 2003-10-25 | Verfahren zur schwingungsd mpfung |
DE50313165T DE50313165D1 (de) | 2002-11-12 | 2003-10-25 | Verfahren zur schwingungsd mpfung |
AU2003276185A AU2003276185A1 (en) | 2002-11-12 | 2003-10-25 | Method for suppressing vibrations |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10252384.3 | 2002-11-12 | ||
DE2002152384 DE10252384B4 (de) | 2002-11-12 | 2002-11-12 | Verfahren zur Schwingungsdämpfung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004043725A1 true WO2004043725A1 (de) | 2004-05-27 |
Family
ID=32239976
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/011862 WO2004043725A1 (de) | 2002-11-12 | 2003-10-25 | Verfahren zur schwingungsdämpfung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1572485B1 (de) |
AU (1) | AU2003276185A1 (de) |
DE (2) | DE10252384B4 (de) |
WO (1) | WO2004043725A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2108859A2 (de) | 2008-04-08 | 2009-10-14 | ZF Friedrichshafen AG | Verfahren und System zur Schwingungsreduzierung im Antriebsstrang eines ein Getriebe umfassenden Kraftfahrzeugs |
DE102008001050A1 (de) | 2008-04-08 | 2009-10-15 | Zf Friedrichshafen Ag | System zur Schwingungsreduzierung in einem Achsgetriebe eines Kraftfahrzeugs |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006014995A1 (de) | 2006-03-31 | 2007-10-04 | Dr.Ing.H.C. F. Porsche Ag | Verfahren und Vorrichtung zur betriebssituationsabhängigen Einstellung der Schwingungseigenschaften von Lagerelementen zur Lagerung eines Aggregats, insbesondere einer Brennkraftmaschine und/oder eines Getriebes in einem Kraftfahrzeug |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3912058A1 (de) * | 1989-04-13 | 1990-10-18 | Continental Ag | Elastisches lager mit variabler steifigkeit |
US5236182A (en) * | 1990-11-28 | 1993-08-17 | Nissan Motor Co., Inc. | Suspension device for use with automotive power unit |
US5326182A (en) | 1992-09-14 | 1994-07-05 | Datamax Bar Code Products Corporation | Ribbon roll drive |
DE19711689A1 (de) * | 1997-03-20 | 1998-09-24 | Bayerische Motoren Werke Ag | Aggregat-Lager |
DE10026527A1 (de) | 2000-05-27 | 2001-12-06 | Eras Entwicklung Und Realisati | Elastisches Lager für eine schwingungsisolierte Lagerung einer Abgasanlage an einem Fahrzeugboden |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4123254A1 (de) * | 1991-07-13 | 1993-01-14 | Opel Adam Ag | Steuerung fuer aktive lagerelemente, insbesondere lagerelemente zur lagerung von triebwerken in kraftfahrzeugen |
JP3314484B2 (ja) * | 1992-12-28 | 2002-08-12 | 株式会社デンソー | 車両制振装置 |
DE4340034C1 (de) * | 1993-11-24 | 1995-02-02 | Freudenberg Carl Fa | Lagerung |
FR2765647B1 (fr) * | 1997-07-07 | 2002-01-11 | Jacques Clausin | Reducteur de vibrations monoaxe accorde a bande large et de grande legerete |
US6029274A (en) * | 1997-08-26 | 2000-02-29 | Kimberly-Clark Worldwide, Inc. | Protective garment and method of manufacture |
-
2002
- 2002-11-12 DE DE2002152384 patent/DE10252384B4/de not_active Revoked
-
2003
- 2003-10-25 DE DE50313165T patent/DE50313165D1/de not_active Expired - Lifetime
- 2003-10-25 AU AU2003276185A patent/AU2003276185A1/en not_active Abandoned
- 2003-10-25 EP EP03810949A patent/EP1572485B1/de not_active Expired - Fee Related
- 2003-10-25 WO PCT/EP2003/011862 patent/WO2004043725A1/de not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3912058A1 (de) * | 1989-04-13 | 1990-10-18 | Continental Ag | Elastisches lager mit variabler steifigkeit |
US5236182A (en) * | 1990-11-28 | 1993-08-17 | Nissan Motor Co., Inc. | Suspension device for use with automotive power unit |
US5326182A (en) | 1992-09-14 | 1994-07-05 | Datamax Bar Code Products Corporation | Ribbon roll drive |
DE19711689A1 (de) * | 1997-03-20 | 1998-09-24 | Bayerische Motoren Werke Ag | Aggregat-Lager |
DE10026527A1 (de) | 2000-05-27 | 2001-12-06 | Eras Entwicklung Und Realisati | Elastisches Lager für eine schwingungsisolierte Lagerung einer Abgasanlage an einem Fahrzeugboden |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2108859A2 (de) | 2008-04-08 | 2009-10-14 | ZF Friedrichshafen AG | Verfahren und System zur Schwingungsreduzierung im Antriebsstrang eines ein Getriebe umfassenden Kraftfahrzeugs |
DE102008001050A1 (de) | 2008-04-08 | 2009-10-15 | Zf Friedrichshafen Ag | System zur Schwingungsreduzierung in einem Achsgetriebe eines Kraftfahrzeugs |
DE102008001049A1 (de) | 2008-04-08 | 2009-10-15 | Zf Friedrichshafen Ag | Verfahren und System zur Schwingungsreduzierung im Antriebsstrang eines ein Getriebe umfassenden Kraftfahrzeugs |
Also Published As
Publication number | Publication date |
---|---|
AU2003276185A1 (en) | 2004-06-03 |
DE10252384B4 (de) | 2005-05-25 |
EP1572485A1 (de) | 2005-09-14 |
EP1572485B1 (de) | 2010-10-06 |
DE50313165D1 (de) | 2010-11-18 |
DE10252384A1 (de) | 2004-06-03 |
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