EP1162600B1 - Aktive Kontrolle des Kraftfahrzeugeinlasslärms - Google Patents

Aktive Kontrolle des Kraftfahrzeugeinlasslärms Download PDF

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Publication number
EP1162600B1
EP1162600B1 EP01202131A EP01202131A EP1162600B1 EP 1162600 B1 EP1162600 B1 EP 1162600B1 EP 01202131 A EP01202131 A EP 01202131A EP 01202131 A EP01202131 A EP 01202131A EP 1162600 B1 EP1162600 B1 EP 1162600B1
Authority
EP
European Patent Office
Prior art keywords
diaphragm
speaker
air induction
noise
flow body
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.)
Expired - Lifetime
Application number
EP01202131A
Other languages
English (en)
French (fr)
Other versions
EP1162600A3 (de
EP1162600A2 (de
Inventor
Richard D. Mcwilliam
Ian R. Mclean
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.)
Continental Tire Canada Inc
Original Assignee
Siemens VDO Automotive Inc
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 Siemens VDO Automotive Inc filed Critical Siemens VDO Automotive Inc
Publication of EP1162600A2 publication Critical patent/EP1162600A2/de
Publication of EP1162600A3 publication Critical patent/EP1162600A3/de
Application granted granted Critical
Publication of EP1162600B1 publication Critical patent/EP1162600B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17857—Geometric disposition, e.g. placement of microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
    • H04R1/2834—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm for loudspeaker transducers

Definitions

  • This invention relates to an active control of automotive induction noise and, in particular, to an active dipole inlet using a drone cone speaker driver.
  • Active noise attenuation systems use a speaker to create a sound that attenuates engine noise.
  • the sound created is out of phase with the engine noise and combines with the engine noise to result in its reduction.
  • this sound is generated in proximity to the air induction system.
  • the speaker is placed in the mouth of air intake duct.
  • An active noise control system for cancellation of noise in a duct is known from US 5 446 249.
  • the present invention seeks to overcome the above mentioned problems.
  • an air induction system comprises an air induction system according to claim 1 and a method of noise attenuation according to claim 9.
  • FIG. 1 shows an embodiment of the invention.
  • the air induction system comprises air induction body 10, speaker 14 with first diaphragm 18, and second diaphragm 22, which is spaced from first diaphragm 18.
  • speaker 14 and first diaphragm 18 are disposed about air induction body 10. While first diaphragm 18 may be of a design well known, second diaphragm 22 is preferably flexible.
  • the air induction system includes a flow body 26 interconnecting first diaphragm 18 and second diaphragm 22.
  • the flow body is a tube, although one skilled in the art may employ other forms to perform the same function of creating an inductive mass.
  • Seal 30 and seal 34 may serve to interconnect flow body 26 to first diaphragm 18 and second diaphragm 22, respectively.
  • Mouth 38 an opening as known in the art, may be part of air induction body 10. It is preferable that second diaphragm 22 be disposed about mouth 38 as pictured.
  • air filter 42 may also be disposed in air induction body 10 to filter incoming air in the direction of arrow A, which is in the direction of the vehicle engine.
  • Control unit 46 is in communication with speaker 14 to thereby control sound output to attenuate engine noise.
  • control unit 46 generates a signal through speaker 14 and first diaphragm 18.
  • the signal is transmitted to second diaphragm 22.
  • the signal is transmitted through a sealed flow body such as a tube.
  • second diaphragm 22 generates a noise attenuating sound, which, as known, is generally out of phase with engine noise to thereby cancel sound.
  • the signal is thus transmitted through an inductive mass, which improves speaker response at low frequency ranges.
  • Figure 2 illustrates the benefit of the system. Speaker response is shown over sound frequency.
  • Line 50 illustrates speaker response of prior art systems over a wide frequency range. As shown, speaker response deteriorates at low sound frequencies. With the device of Figure 1, as shown by line 54 (dashed lines), speaker response improves to permit noise attenuation at low frequency ranges without sacrificing speaker response at higher frequency ranges.
  • FIG 3 shows the system in relation to vehicle throttle body 50 and vehicle engine 54. Throttle body 50 and vehicle engine 54 are both shown schematically. The system may be connected to throttle body 50 by means known in the art.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Exhaust Silencers (AREA)

Claims (9)

  1. Luftansaugsystem, das umfasst:
    ein Luftansauggehäuse (10);
    einen Lautsprecher (14), der im Luftansauggehäuse (10) angeordnet ist; eine erste Membran (18), die mit dem besagten Lautsprecher (14) gekoppelt ist, und eine Steuerung (46) in Datenaustausch mit dem Lautsprecher (14), die über Mittel verfügt, um ein Signal an den Lautsprecher (14) mittels der ersten Membran (18) zu erzeugen, gekennzeichnet durch
    eine zweite Membran (22), die mit einem Abstand zur besagten ersten Membran (18) angeordnet ist, einen Strömkörper (26), der die erste Membran (18) und die besagte zweite Membran (22) in abgedichteter Weise miteinander verbindet, wodurch eine induktive Masse erzeugt wird, wobei im Betrieb das von der ersten Membran (18) ausgegebene Signal durch den besagten Strömkörper (26) zur besagten zweiten Membran (22) übertragen wird, so dass besagte zweite Membran (22) ein Geräusch zur Geräuschdämpfung erzeugt.
  2. System nach Anspruch 1, wobei die erste Membran (18) um den besagten Lautsprecher (14) angeordnet ist.
  3. System nach Anspruch 3 oder 4, wobei besagter Strömkörper (26) ein Tubus ist.
  4. System nach einem der Ansprüche 2 bis 5, das ferner mindestens eine Abdichtung (30) umfasst, die besagten Strömkörper (26) mit besagter erster Membran (18) verbindet.
  5. System nach einem der Ansprüche 2 bis 6, das ferner mindestens eine Abdichtung (30) umfasst, die besagten Strömkörper (26) mit besagter zweiter Membran (22) verbindet.
  6. System nach einem der vorhergehenden Ansprüche, das ferner eine Mündung (38) umfasst, die auf eine ein Zusammenwirken ermöglichende Weise mit besagtem Luftansauggehäuse (10) verbunden ist, wobei besagte zweite Membran (22) in besagter Mündung (38) angeordnet ist.
  7. System nach einem der vorhergehenden Ansprüche, das ferner einen Luftfilter (42) umfasst, der in besagtem Luftansauggehäuse angeordnet ist.
  8. System nach einem der vorhergehenden Ansprüche, wobei besagte zweite Membran (22) flexibel ist.
  9. Verfahren zur Geräuschdämpfung, das folgende Schritte umfasst:
    Erzeugen eines Signals durch eine erste Membran (18), die in einem Luftansauggehäuse (10) angeordnet ist, dadurch gekennzeichnet, dass
    das besagte Signal durch einen Strömkörper (26) zu einer zweiten Membran (22) übertragen wird, wobei besagter Strömkörper (26) besagte erste Membran (18) und besagte zweite Membran (22) in abgedichteter Weise miteinander verbindet, wodurch eine induktive Masse erzeugt wird, und dadurch
    Erzeugen eines Geräuschs zur Geräuschdämpfung durch die zweite Membran (22).
EP01202131A 2000-06-06 2001-06-01 Aktive Kontrolle des Kraftfahrzeugeinlasslärms Expired - Lifetime EP1162600B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US20975300P 2000-06-06 2000-06-06
US209753P 2000-06-06
US86841401A 2001-05-16 2001-05-16
US868414 2001-05-16

Publications (3)

Publication Number Publication Date
EP1162600A2 EP1162600A2 (de) 2001-12-12
EP1162600A3 EP1162600A3 (de) 2002-10-23
EP1162600B1 true EP1162600B1 (de) 2006-07-26

Family

ID=26904469

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01202131A Expired - Lifetime EP1162600B1 (de) 2000-06-06 2001-06-01 Aktive Kontrolle des Kraftfahrzeugeinlasslärms

Country Status (2)

Country Link
EP (1) EP1162600B1 (de)
DE (1) DE60121677T2 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3234314B1 (de) 2014-12-19 2020-03-11 General Electric Company System zur aktiven geräuschregelung
EP3446307B1 (de) 2016-04-20 2022-03-23 General Electric Company Systeme und vorrichtungen zur aktiven geräuschunterdrückung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4076097A (en) * 1976-08-04 1978-02-28 Thomas Lowe Clarke Augmented passive radiator loudspeaker
US5446790A (en) * 1989-11-24 1995-08-29 Nippondenso Co., Ltd. Intake sound control apparatus
US5446249A (en) * 1993-07-13 1995-08-29 Digisonix, Inc. Dry acoustic system preventing condensation
US6084971A (en) * 1997-06-10 2000-07-04 Siemens Electric Limited Active noise attenuation system

Also Published As

Publication number Publication date
DE60121677D1 (de) 2006-09-07
EP1162600A3 (de) 2002-10-23
DE60121677T2 (de) 2006-12-07
EP1162600A2 (de) 2001-12-12

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