GB2354986A - Transmitting engine intake noise to the passenger compartment in a motor vehicle - Google Patents

Transmitting engine intake noise to the passenger compartment in a motor vehicle Download PDF

Info

Publication number
GB2354986A
GB2354986A GB9923695A GB9923695A GB2354986A GB 2354986 A GB2354986 A GB 2354986A GB 9923695 A GB9923695 A GB 9923695A GB 9923695 A GB9923695 A GB 9923695A GB 2354986 A GB2354986 A GB 2354986A
Authority
GB
United Kingdom
Prior art keywords
engine
intake system
air intake
passenger compartment
compartment
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.)
Withdrawn
Application number
GB9923695A
Other versions
GB9923695D0 (en
Inventor
Nigel Charles Taylor
Mark Lucian Allman-Ward
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.)
Bayerische Motoren Werke AG
MG Rover Group Ltd
Original Assignee
Bayerische Motoren Werke AG
MG Rover Group Ltd
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 Bayerische Motoren Werke AG, MG Rover Group Ltd filed Critical Bayerische Motoren Werke AG
Priority to GB9923695A priority Critical patent/GB2354986A/en
Publication of GB9923695D0 publication Critical patent/GB9923695D0/en
Publication of GB2354986A publication Critical patent/GB2354986A/en
Withdrawn legal-status Critical Current

Links

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
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/22—Methods or devices for transmitting, conducting or directing sound for conducting sound through hollow pipes, e.g. speaking tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q5/00—Arrangement or adaptation of acoustic signal devices
    • 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
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/02—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by gas; e.g. suction operated
    • G10K9/04—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by gas; e.g. suction operated by compressed gases, e.g. compressed air

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Mechanical Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

A motor vehicle 10 has an engine compartment 14 and a passenger compartment 12 with a fire wall 16 therebetween. An engine 18 in the engine compartment has an air intake system 22, 24, 26, 28, and a noise transmission tube 30 extends through the separating wall having one end connected to the air intake system upstream of the air filter 28, and a resonator at the other end, which is situated in the passenger compartment 12.

Description

2354986 Motor Vehicles The present invention relates to motor. vehicles
and in particular to the transmission of engine noise to vehicle drivers.
It is known, for example from DE 42 33 252 and DE 44 35 296 to provide pipes for transmitting engine noise from an engine air inlet system towards the driver. This enhances the driver's ability to monitor the running of the engine and can also help to give an impression to the driver that the vehicle is of a sporty or powerful nature, without it producing unacceptably high levels of drive-by noise.
However, such systems can suffer problems in that the connection of the pipe to the air intake system can interfere with the normal operation of the air intake system. A further problem is that such systems generally require a membrane over the pipe arranged to resonate at specific frequencies, and the changes in temperature and humidity in the engine compartment where they are situated can interfere with their operation.
Accordingly the present invention provides a vehicle having an engine compartment and a passenger compartment with a separating wall therebetween, an engine in the engine compartment having an air intake system, and a noise transmission tube extending through the separating wall from the air intake system to a resonator which is situated in the passenger compartment.
The present invention further provides a vehicle having an engine compartment and a passenger compartment with a separating wall therebetween, an engine in the engine compartment having an air intake system including a throttle valve for controlling the flow of air to the engine, and a noise transmission tube extending from the air intake system towards the passenger compartment to transmit engine noise to the driver, wherein the noise transmission tube is connected to the air intake system upstream of the throttle valve.
Preferred embodiments of the present invention will now be described by way of example only with reference to the accompanying drawing in which Figure 1 is a 5 schematic plan view of a motor vehicle according to the invention.
A vehicle 10 has a passenger compartment 12 and an engine compartment 14 separated by a fire wall 16. An engine 18 is situated in the engine compartment 14 and is provided with an air intake system comprising a first inlet duct section 20 which is open at one end to form an inlet 22, and a second inlet duct section 24 leading to the inlet manifold 26, with an air filter 28 between the two inlet duct sections 20, 24 to prevent the passage of dirt and moisture from the inlet 22 into the engine 18. A throttle valve 29 is provided in the second inlet duct section 24 for controlling the flow of air to the engine in conventional manner.
A noise transmission tube 30 has one end connected to the first inlet duct section 20, upstream of the air filter 28, extends through the fire wan 16, and has a resonator 32 at the other end. The resonator 32 includes a membrane 34 which extends across the tube and is arranged to be vibrated by sound waves travelling along the tube 30. The tube 30 is supported in an aperture 36 through the fire wan by means of a grommet 38, which can conveniently also support electrical wiring which also extends through the fire wall.
It has been found that the system described works effectively with a tube as narrow as about 12mm.
Because the tube 30 is connected to the air intake upstream of the throttle 29 and the air filter 28, even if the resonator breaks and allows air to flow through the tube 30 into the inlet duct 20, 24, this will not interfere with the operation of the engine. Furthermore because the resonator 32, and its membrane 34 are situated in the passenger compartment, they are not affected by the large changes in temperature and humidity experienced in the engine compartment. A further advantage is that the opening and closing of the throttle 29 affects the ease with which noise is transmitted from the engine into the tube 30. Under high acceleration when the throttle is wide open a high level of noise will be transmitted to the driver. Under idle when the throttle is substantially closed little noise is transmitted to the driver.
The system can also work with the pipe 30 joining to the inlet duct 24 between the filter 28 and the throttle 29. This prevents the sound damping effects of the filter 28 from affecting the transmission of noise to the driver, but means that, in the event of leakage of air through the pipe 30, it win enter the engine unfiltered and could cause damage.

Claims (6)

-4CLAIMS
1. A vehicle having an engine compartment and a passenger compartment with a separating wall therebetween, an engine in the engine compartment having an air intake system, and a noise transmission tube extending through the separating wall from the air intake system to a resonator which is situated in the passenger compartment.
2. A vehicle according to claim 1 wherein the air intake system includes a throttle valve for controlling the flow of air to the engine and the noise transmission tube is connected to the air intake system upstream of the throttle valve.
3. A vehicle having an engine compartment and a passenger compartment with a separating wall therebetween, an engine in the engine compartment having an air intake system including a throttle valve for controlling the flow of air to the engine, and a noise transmission tube extending from the air intake system towards the passenger compartment to transmit engine noise to the driver, wherein the noise transmission tube is connected to the air intake system upstream of the throttle valve.
4. A vehicle according to any foregoing claim wherein the air intake system includes an air filter and the noise transmission tube is connected to the air intake system upstream of the air filter.
5. A vehicle according to any foregoing claim wherein the noise transmission tube is supported in an aperture through the separating wall by supporting means which also supports electrical wiring.
6. A vehicle substantially as hereinbefore described with reference to the accompanying drawings.
GB9923695A 1999-10-08 1999-10-08 Transmitting engine intake noise to the passenger compartment in a motor vehicle Withdrawn GB2354986A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9923695A GB2354986A (en) 1999-10-08 1999-10-08 Transmitting engine intake noise to the passenger compartment in a motor vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9923695A GB2354986A (en) 1999-10-08 1999-10-08 Transmitting engine intake noise to the passenger compartment in a motor vehicle

Publications (2)

Publication Number Publication Date
GB9923695D0 GB9923695D0 (en) 1999-12-08
GB2354986A true GB2354986A (en) 2001-04-11

Family

ID=10862267

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9923695A Withdrawn GB2354986A (en) 1999-10-08 1999-10-08 Transmitting engine intake noise to the passenger compartment in a motor vehicle

Country Status (1)

Country Link
GB (1) GB2354986A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10102923C1 (en) * 2001-01-23 2002-05-23 Mahle Filtersysteme Gmbh Engine silencer, for vehicle, has at least one membrane and body sound transmission devices acting with membrane and body component
DE10114397A1 (en) * 2001-03-23 2002-09-26 Mahle Filtersysteme Gmbh Sound transmission device for motor vehicle has several resonator chambers working in parallel, of which at least two are different from each other in terms of their frequency tuning
US6644436B2 (en) * 2001-03-21 2003-11-11 Daimlerchrysler Ag Device for noise configuration in a motor vehicle
EP1619659A1 (en) * 2004-07-21 2006-01-25 Mann+Hummel Gmbh Device for transmitting sound

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4233252C1 (en) * 1992-10-02 1993-12-16 Bayerische Motoren Werke Ag Acoustic signalling display indicating engine running noise in car - uses signal representing depression of accelerator pedal to control throttle in pneumatic line leading to oscillating membrane
US5820442A (en) * 1996-12-09 1998-10-13 Helder; Glenn R. Super sound engine/transmission sound enhancer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4233252C1 (en) * 1992-10-02 1993-12-16 Bayerische Motoren Werke Ag Acoustic signalling display indicating engine running noise in car - uses signal representing depression of accelerator pedal to control throttle in pneumatic line leading to oscillating membrane
US5820442A (en) * 1996-12-09 1998-10-13 Helder; Glenn R. Super sound engine/transmission sound enhancer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10102923C1 (en) * 2001-01-23 2002-05-23 Mahle Filtersysteme Gmbh Engine silencer, for vehicle, has at least one membrane and body sound transmission devices acting with membrane and body component
US6644436B2 (en) * 2001-03-21 2003-11-11 Daimlerchrysler Ag Device for noise configuration in a motor vehicle
DE10114397A1 (en) * 2001-03-23 2002-09-26 Mahle Filtersysteme Gmbh Sound transmission device for motor vehicle has several resonator chambers working in parallel, of which at least two are different from each other in terms of their frequency tuning
US6848410B2 (en) 2001-03-23 2005-02-01 Mahle Filtersysteme Gmbh Sound transmission device for a motor vehicle
EP1619659A1 (en) * 2004-07-21 2006-01-25 Mann+Hummel Gmbh Device for transmitting sound

Also Published As

Publication number Publication date
GB9923695D0 (en) 1999-12-08

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Legal Events

Date Code Title Description
COOA Change in applicant's name or ownership of the application
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)