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Research paper thumbnail of Verringerung von NVH und Gaspulsation in einem Klimaanlagenverdichter

Ein Zylinderkopf (20) fur einen Verdichter verringert NVH, ohne die Gesamtgrose des Verdichters z... more Ein Zylinderkopf (20) fur einen Verdichter verringert NVH, ohne die Gesamtgrose des Verdichters zu erhohen oder Stromungsverluste hervorzurufen. Im Allgemeinen umfasst der Verdichter einen Zylinderblock, der ein unter niederigerem Druck stehendes Fluid aus dem Zylinderkopf aufnimmt und ein unter hoherem Druck stehendes Fluid zuruck an den Zylinderkopf liefert. Der Zylinderkopf umfasst eine ringformige Ausenwand und eine ringformige Innenwand, wodurch eine Ansaugkammer und eine Auslasskammer gebildet werden. Ein Einlass steht in fluidtechnischer Kommunikation mit der Ansaugkammer. Ein Auslass steht in fluidtechnischer Kommunikation mit der Auslasskammer. Der Auslass umfasst einen Auslasskanal mit einem rohrformigen Element, das in die Auslasskammer hineinragt. Das rohrformige Element ist durch eine Seitenwand und eine geschlossene Stirnwand definiert. In der Seitenwand befinden sich eine Vielzahl von Bohrungen, die die Auslasskammer und den Auslasskanal fluidtechnisch verbinden.

Research paper thumbnail of Pressure pulse attenuator

Research paper thumbnail of Oil separator and silencer construction

Oil separator-silencer (10, 200) for a compressor (100, 202) having a housing (10a, 10b, 210a) ar... more Oil separator-silencer (10, 200) for a compressor (100, 202) having a housing (10a, 10b, 210a) are present in the - an inner chamber (18) with a surrounding wall (20 220) having an oil collecting portion (16, 216) forms, - a in the inner chamber (18) disposed second wall (24, 224) having a separator region (26, 226) and having an impact surface (28), wherein the arrangement of the second wall (24, 224) in the inner chamber (18 ) flow channels (A1) forms with different cross-sectional areas, - a housing (10a, 10b, 210a) mixture inlet located (12,212) defining a passage for an oil-refrigerant mixture (40) provides for it from the outside of the housing (10a, 10b, 210a) (in the separator region 26, 226) into flows, wherein the mixture inlet (12, 212) as the second wall (24, 224) is oriented such that the oil-refrigerant mixture (40) against the impingement surface (28) collides, wherein the oil (45) is deposited from the mixture and (16, 216) in the oil collecting portion flows and the...

Research paper thumbnail of Pressure pulsation dampening device

Research paper thumbnail of The characterization of nonlinear viscoelastic isolators

Research paper thumbnail of NVH and gas pulsation reduction in AC compressor

Research paper thumbnail of Universal Attenuation Device for Air-Conditioning Circuit

Provided is an attenuation device for a vehicle including a housing having a chamber formed there... more Provided is an attenuation device for a vehicle including a housing having a chamber formed therein. The housing is coupled to an air-conditioning circuit of the vehicle to get in fluid communication with the air-conditioning circuit. An attenuation member is disposed in the chamber of the housing. The attenuation member includes a partition plate including at least one pipe disposed therein. The attenuation member is formed to attenuate sound energy generated by a fluid in the air-conditioning circuit.

Research paper thumbnail of Oil separator and muffler structure

Research paper thumbnail of Characteristics of the SAM Combined with WLF Equation

SAE Technical Paper Series, 2009

Research paper thumbnail of Universal damping device for an air conditioning circuit

The present invention provides a damping device for a vehicle, comprising a chamber formed therei... more The present invention provides a damping device for a vehicle, comprising a chamber formed therein. The housing is connected to an air-conditioning circuit of the vehicle and is connected in fluid communication therewith. A damping element is disposed within the chamber of the housing. The damping member comprises a partition plate having at least one arranged in the partition plate pipe. The damping element is adapted to attenuate acoustic energy generated by a fluid in the air-conditioning circuit.

Research paper thumbnail of Influence of excitation amplitude on the characteristics of nonlinear butyl rubber isolators

Nonlinear Dynamics, 2007

The purpose of this study is to explore the advantages and characteristics of nonlinear butyl rub... more The purpose of this study is to explore the advantages and characteristics of nonlinear butyl rubber (type IIR) isolators in vibratory shear by comparison with linear isolators. It is known that the mechanical properties of viscoelastic materials exhibit significant frequency and temperature dependence, and in some cases, nonlinear dynamic behavior as well. Nonlinear characteristics in shear deformation are reflected in mechanical properties such as stiffness and damping. Furthermore, even when the excitation amplitude is small the response amplitude may often be large enough that nonlinearities cannot be ignored. The treatment involves developing phenomenological models of the effective storage modulus and effective loss factor of a rubber isolator material as a function of excitation amplitude. The transmissibility of a nonlinear viscoelastic isolator is compared with that of a linear isolator using an equivalent linear damping coefficient. Forced resonance vibration and impedance tests are used to characterize nonlinear parameters and to measure the normalized transmissibility. It is found that as the excitation amplitude of the nonlinear viscoelastic isolator increases, the response amplitude decreases

Research paper thumbnail of Tape Dispenser System

Research paper thumbnail of Verringerung von NVH und Gaspulsation in einem Klimaanlagenverdichter

Ein Zylinderkopf (20) fur einen Verdichter verringert NVH, ohne die Gesamtgrose des Verdichters z... more Ein Zylinderkopf (20) fur einen Verdichter verringert NVH, ohne die Gesamtgrose des Verdichters zu erhohen oder Stromungsverluste hervorzurufen. Im Allgemeinen umfasst der Verdichter einen Zylinderblock, der ein unter niederigerem Druck stehendes Fluid aus dem Zylinderkopf aufnimmt und ein unter hoherem Druck stehendes Fluid zuruck an den Zylinderkopf liefert. Der Zylinderkopf umfasst eine ringformige Ausenwand und eine ringformige Innenwand, wodurch eine Ansaugkammer und eine Auslasskammer gebildet werden. Ein Einlass steht in fluidtechnischer Kommunikation mit der Ansaugkammer. Ein Auslass steht in fluidtechnischer Kommunikation mit der Auslasskammer. Der Auslass umfasst einen Auslasskanal mit einem rohrformigen Element, das in die Auslasskammer hineinragt. Das rohrformige Element ist durch eine Seitenwand und eine geschlossene Stirnwand definiert. In der Seitenwand befinden sich eine Vielzahl von Bohrungen, die die Auslasskammer und den Auslasskanal fluidtechnisch verbinden.

Research paper thumbnail of Pressure pulse attenuator

Research paper thumbnail of Oil separator and silencer construction

Oil separator-silencer (10, 200) for a compressor (100, 202) having a housing (10a, 10b, 210a) ar... more Oil separator-silencer (10, 200) for a compressor (100, 202) having a housing (10a, 10b, 210a) are present in the - an inner chamber (18) with a surrounding wall (20 220) having an oil collecting portion (16, 216) forms, - a in the inner chamber (18) disposed second wall (24, 224) having a separator region (26, 226) and having an impact surface (28), wherein the arrangement of the second wall (24, 224) in the inner chamber (18 ) flow channels (A1) forms with different cross-sectional areas, - a housing (10a, 10b, 210a) mixture inlet located (12,212) defining a passage for an oil-refrigerant mixture (40) provides for it from the outside of the housing (10a, 10b, 210a) (in the separator region 26, 226) into flows, wherein the mixture inlet (12, 212) as the second wall (24, 224) is oriented such that the oil-refrigerant mixture (40) against the impingement surface (28) collides, wherein the oil (45) is deposited from the mixture and (16, 216) in the oil collecting portion flows and the...

Research paper thumbnail of Pressure pulsation dampening device

Research paper thumbnail of The characterization of nonlinear viscoelastic isolators

Research paper thumbnail of NVH and gas pulsation reduction in AC compressor

Research paper thumbnail of Universal Attenuation Device for Air-Conditioning Circuit

Provided is an attenuation device for a vehicle including a housing having a chamber formed there... more Provided is an attenuation device for a vehicle including a housing having a chamber formed therein. The housing is coupled to an air-conditioning circuit of the vehicle to get in fluid communication with the air-conditioning circuit. An attenuation member is disposed in the chamber of the housing. The attenuation member includes a partition plate including at least one pipe disposed therein. The attenuation member is formed to attenuate sound energy generated by a fluid in the air-conditioning circuit.

Research paper thumbnail of Oil separator and muffler structure

Research paper thumbnail of Characteristics of the SAM Combined with WLF Equation

SAE Technical Paper Series, 2009

Research paper thumbnail of Universal damping device for an air conditioning circuit

The present invention provides a damping device for a vehicle, comprising a chamber formed therei... more The present invention provides a damping device for a vehicle, comprising a chamber formed therein. The housing is connected to an air-conditioning circuit of the vehicle and is connected in fluid communication therewith. A damping element is disposed within the chamber of the housing. The damping member comprises a partition plate having at least one arranged in the partition plate pipe. The damping element is adapted to attenuate acoustic energy generated by a fluid in the air-conditioning circuit.

Research paper thumbnail of Influence of excitation amplitude on the characteristics of nonlinear butyl rubber isolators

Nonlinear Dynamics, 2007

The purpose of this study is to explore the advantages and characteristics of nonlinear butyl rub... more The purpose of this study is to explore the advantages and characteristics of nonlinear butyl rubber (type IIR) isolators in vibratory shear by comparison with linear isolators. It is known that the mechanical properties of viscoelastic materials exhibit significant frequency and temperature dependence, and in some cases, nonlinear dynamic behavior as well. Nonlinear characteristics in shear deformation are reflected in mechanical properties such as stiffness and damping. Furthermore, even when the excitation amplitude is small the response amplitude may often be large enough that nonlinearities cannot be ignored. The treatment involves developing phenomenological models of the effective storage modulus and effective loss factor of a rubber isolator material as a function of excitation amplitude. The transmissibility of a nonlinear viscoelastic isolator is compared with that of a linear isolator using an equivalent linear damping coefficient. Forced resonance vibration and impedance tests are used to characterize nonlinear parameters and to measure the normalized transmissibility. It is found that as the excitation amplitude of the nonlinear viscoelastic isolator increases, the response amplitude decreases

Research paper thumbnail of Tape Dispenser System