ELECTROMECHANIC TRANSDUCER, ESPECIALLY FOR MOUNTING IN THE INTAKE PIPE OF AN INTERNAL COMBUSTION ENGINE

The invention relates to a loudspeaker, especially for actively influencing the intake noise of an internal combustion engine. Said loudspeaker (10) has a mass (12) which is moved by means of a drive (13), and a membrane which acts as a spring. In addition, a pneumatic spring (16) supported in a fix...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	PRICKEN, FRANC, WILD, STEPHAN
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR BLASTING COMBUSTION ENGINES DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS MECHANICAL ENGINEERING METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS PUBLIC ADDRESS SYSTEMS SOUND-PRODUCING DEVICES SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The invention relates to a loudspeaker, especially for actively influencing the intake noise of an internal combustion engine. Said loudspeaker (10) has a mass (12) which is moved by means of a drive (13), and a membrane which acts as a spring. In addition, a pneumatic spring (16) supported in a fixed manner is mounted on the mass (12). The rigidity of the pneumatic spring (16) can be influenced by a change in the pressure in the partial volumes (19), enabling the loudspeaker to be detuned. A loudspeaker which is to be used in the intake pipe of an internal combustion engine can be given smaller dimensions in the design stage thereof, as the detuning of the loudspeaker can shift the resonance frequency thereof.