KR100580729B1 - Decreasing apparatus of engine noise when air is inhaled - Google Patents

Decreasing apparatus of engine noise when air is inhaled Download PDF

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Publication number
KR100580729B1
KR100580729B1 KR1019990055301A KR19990055301A KR100580729B1 KR 100580729 B1 KR100580729 B1 KR 100580729B1 KR 1019990055301 A KR1019990055301 A KR 1019990055301A KR 19990055301 A KR19990055301 A KR 19990055301A KR 100580729 B1 KR100580729 B1 KR 100580729B1
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South Korea
Prior art keywords
air
air duct
intake
sound absorbing
absorbing material
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KR1019990055301A
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Korean (ko)
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KR20010054472A (en
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장영학
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현대자동차주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1272—Intake silencers ; Sound modulation, transmission or amplification using absorbing, damping, insulating or reflecting materials, e.g. porous foams, fibres, rubbers, fabrics, coatings or membranes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10262—Flow guides, obstructions, deflectors or the like

Abstract

본 발명의 목적은 에어크리너로 공기를 도입하는 에어덕트에서 효과적으로 흡기소음을 감쇄시킬 수 있는 흡기소음 감쇄장치를 제공하는데 있다.An object of the present invention is to provide an intake noise attenuation device that can effectively reduce the intake noise in the air duct to introduce air into the air cleaner.

이를 위해 본 발명은 에어크리너에 공기를 도입안내하는 에어덕트에 있어서,To this end, the present invention in the air duct for introducing air to the air cleaner,

상기 에어덕트의 내면에는 흡음재가 적층되어 있으며, 또 복수개의 버퍼플레이트가 에어덕트의 중심방향을 향해 돌출되어 있는 것을 특징으로 한다.A sound absorbing material is stacked on the inner surface of the air duct, and a plurality of buffer plates protrude toward the center direction of the air duct.

흡음재, 버터플레이트, 에어덕트Sound Absorbing Material, Butter Plate, Air Duct

Description

엔진의 흡기소음 감쇄장치{Decreasing apparatus of engine noise when air is inhaled}Decreasing apparatus of engine noise when air is inhaled}

도 1은 본 발명에 의한 엔진의 흡기소음 감쇄장치를 나타내는 요부단면도BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a sectional view showing the main parts of an intake noise reduction device of an engine according to the present invention.

도 2는 본 발명에 의한 엔진의 흡기소음 감쇄장치의 저면도2 is a bottom view of an intake noise attenuation apparatus of an engine according to the present invention.

도 3은 종래의 흡기소음 감쇄를 설명하기 위한 흡기계를 나타내는 도면3 is a view showing an intake machine for explaining the conventional intake noise attenuation

※ 도면의 주요부분에 대한 부호의 설명※ Explanation of code for main part of drawing

1 : 에어덕트 2 : 흡음재1: Air duct 2: Sound absorbing material

3 : 버퍼플레이트3: Buffer Plate

본 발명은 엔진의 흡기소음 감쇄장치에 관한 것이다.The present invention relates to an intake noise reduction device of an engine.

엔진을 운전하기 위해서는 가솔린을 연소시키기 위해 많은 공기를 필요로 하는데, 이 공기중에는 많은 먼지등의 이물질을 포함하고 있어 이들 이물질이 실린더로 유입되면 거친 연마제로 작용하여 실린더 벽을 마모시키고 엔진오일에 섞여 베어링등에 공급되어 엔진수명을 단축시키게 되는 원인이 된다. 이 때문에 엔진에 도입되는 공기속에 포함된 이물질을 제거하기 위하여 에어크리너를 흡기계에 장착하 고 있다. 이 에어크리너는 공기중에 포함되어 있는 이물질을 제거하는 역할을 하나 흡기계에서 발생하는 흡기소음을 없애는 역할도 한다.In order to operate the engine, a lot of air is required to burn gasoline, which contains a lot of foreign matter such as dust, and when these foreign substances enter the cylinder, they act as a rough abrasive, which wears down the cylinder walls and mixes with the engine oil. It can be supplied to bearings and shorten engine life. For this reason, the air cleaner is installed in the intake system to remove foreign substances contained in the air introduced into the engine. The air cleaner removes foreign substances in the air, but also removes intake noise generated from the intake machine.

엔진이 구동되면 ①강한 흡기 부압이 형성되고, 이 흡기 부압에 의해 외부로부터 공기가 에어크리너를 포함한 흡기계를 통해 엔진으로 도입되는데 이때 쇳소리와 같은 흡기소음이 발생하며(Booming noise), ②에어가 연소실로 들어갈 때 밸브 닫힘시 흡기음이 토출되어 역으로 에어덕트측으로 소음이 나오게 되므로(Rumbling noise) 이를 방치할 경우 안락한 운전을 방해하게 된다. When the engine is driven, ① strong intake negative pressure is formed, and air is introduced from the outside through the intake system including the air cleaner by the intake negative pressure, which generates intake noise such as beeping sound (Booming noise), and ② air When entering the combustion chamber, the intake sound is discharged when the valve is closed, and the noise is emitted to the air duct side (Rumbling noise).

이 흡기소음을 감쇄시키기 위한 방안으로 도 3에 도시하는 것과 같이 에어크리너(10)에 공기를 도입하는 에어덕트(11) 및 인테이크호스(12)의 도중에 레조네이터(13)(14)를 달아 흡기소음을 감쇄토록 하고 있다.As a method for attenuating this intake noise, as shown in FIG. 3, a resonator (13) and (14) are attached to the air duct (11) and the intake hose (12) for introducing air into the air cleaner (10). To attenuate

그러나 레조네이터(13)(14)에 의한 흡기소음 감쇄방식은 특정 소음주파수 대역에만 효과가 있어, 충분한 소음감쇄 효과를 얻기 위해서는 흡기계에 복수개의 레조네이터(13)(14)를 설치하게 되므로써, 에어덕트(11)를 포함한 흡기계의 길이가 증가하여 차량 동력성능이 저하되고, 레조네이터(공명기)의 추가에 의한 흡기계의 중량증가, 원가상승 및 부품수 증가를 가져오는 문제점이 있으며, 또 흡기저항을 증대시켜 엔진출력을 저하시키고 배기가스를 악화시키는 원인이 되고 있다.However, the intake noise reduction method by the resonators 13 and 14 is effective only in a specific noise frequency band, and in order to obtain a sufficient noise reduction effect, a plurality of resonators 13 and 14 are installed in the intake machine, whereby the air duct Increasing the length of the intake system, including (11), reduces the vehicle power performance, increases the weight of the intake system, increases the cost, and increases the number of parts due to the addition of a resonator (resonator). Increasingly, the engine output is lowered and exhaust gas is worsened.

이에 본 발명은 상기한 점을 감안하여 제안한 것으로서 그의 목적으로 하는 것은 에어크리너로 공기를 도입하는 에어덕트에서 효과적으로 흡기소음을 감쇄시킬 수 있는 흡기소음 감쇄장치를 제공하는데 있다. Accordingly, the present invention has been proposed in view of the above point, and an object thereof is to provide an intake noise reduction device that can effectively reduce intake noise in an air duct for introducing air into an air cleaner.                         

상기한 목적을 달성하기 위하여 본 발명의 흡기소음 감쇄장치는 에어크리너에 공기를 도입안내하는 에어덕트에 있어서,In order to achieve the above object, the intake noise reduction device of the present invention is an air duct for introducing air to the air cleaner,

상기 에어덕트의 내면에는 흡음재가 적층되어 있으며, 또 복수개의 버퍼플레이트가 에어덕트의 중심방향을 향해 돌출되어 있는 것을 특징으로 한다.A sound absorbing material is stacked on the inner surface of the air duct, and a plurality of buffer plates protrude toward the center direction of the air duct.

이하 본 발명의 구성과 작용을 첨부한 도면을 참조하여 설명한다.Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.

도 1은 본 발명에 의한 엔진의 흡기소음 감쇄장치를 나타내는 요부단면도이며, 도 2는 본 발명에 의한 엔진의 흡기소음 감쇄장치의 저면도로서 도면중 부호 1은 에어크리너에 공기를 도입안내하는 에어덕트이다.1 is a cross-sectional view showing a main part of an intake noise attenuator of an engine according to the present invention, and FIG. 2 is a bottom view of an intake noise attenuator of an engine according to the present invention. It is a duct.

에어덕트(1)의 몸체는 플라스틱재로 사출성형되며, 굴곡진 형상을 하고 있다.The body of the air duct 1 is injection molded from a plastic material and has a curved shape.

에어덕트(1)의 내면에는 Pu 폼(Poly Urethane Form)으로 된 흡음재(2)가 적층되어 있으며, 내벽면에는 판상부재인 버퍼플레이트(3, Buffer Plate)가 중심방향측으로 돌출되어 있다.
특히, 상기한 버퍼 플레이트(3)는 공기가 흐르는 방향과는 순방향으로 흡기토출압이 흐르는 방향과는 역방향으로 경사지게 형성된다.Sound absorbing material 2 made of Pu foam (Poly Urethane Form) is laminated on the inner surface of the air duct 1, and the buffer plate 3, which is a plate member, protrudes toward the center side on the inner wall surface.
In particular, the buffer plate 3 is formed to be inclined in the opposite direction to the direction in which the intake discharge pressure flows in the forward direction and the direction in which the air flows.

이 버퍼플레이트(3)는 복수개가 서로 간격을 두고 상하로 엇갈리게 설치되며, 공기가 유입되는 입구부(1a)로부터 흐름방향을 향해 경사지게 뉘어져 있는 형상을 갖도록 돌출되어 있다.The buffer plates 3 are arranged so that a plurality of them are staggered up and down at intervals from each other, and protrude so as to be inclined toward the flow direction from the inlet portion 1a through which air is introduced.

이와같은 본 발명은 에어덕트(1) 내부에서 발생되는 스탠딩 웨이브(Standing Wave)가 흡음재(2)를 통하여 흡수되고 또 버퍼플레이트(3)에 의해 압력에너지가 열에너지로 변환되므로써 스탠딩 웨이브의 특성을 감소시키게 된다.In the present invention, the standing wave generated inside the air duct 1 is absorbed through the sound absorbing material 2 and the pressure energy is converted into thermal energy by the buffer plate 3, thereby reducing the characteristic of the standing wave. Let's go.

이상과 같은 본 발명에 의하면 에어덕트 내부에 흡음재층을 적층하고 공기의 흐름을 완충하는 복수개의 버퍼플레이트를 설치하는 것에 의해서 흡기소음이 흡음재에 흡수되어 감쇄되고, 버퍼플레이트가 공기의 흐름에 저항하여 압력에너지를 열에너지로 변환시키게 되므로써 스탠딩 웨이브의 특성을 감소시키게 되어 덕트길이를 축소시킬 수 있고, 레조네이터의 생략 또는 축소가 가능하여 중량 및 비용이 절감되며, 부품수의 감소로 조립성이 향상되는 효과가 있다.












According to the present invention as described above by stacking the sound absorbing material layer inside the air duct and by installing a plurality of buffer plates to buffer the flow of air intake noise is absorbed and attenuated by the sound absorbing material, the buffer plate is resistant to the flow of air By converting the pressure energy into thermal energy, the characteristics of the standing wave can be reduced and the duct length can be reduced, the resonator can be omitted or reduced, and the weight and cost are reduced. There is.












Claims (1)

상기 에어덕트(1)의 내면에는 흡음재(2)가 적층되어 있으며, 상기 에어덕트(1)의 내측면에서 상기 흡음재(2)를 관통하여 에어덕트(1)의 중심방향을 향해 돌출되는 버퍼 플레이트(3)가 형성되어지되,Sound absorbing material (2) is laminated on the inner surface of the air duct (1), the buffer plate protrudes toward the center direction of the air duct 1 through the sound absorbing material (2) from the inner surface of the air duct (1) (3) is formed, 상기 버퍼 플레이트(3)는 공기가 흐르는 방향과는 순방향이며 흡기토출압이 흐르는 방향과는 역방향으로 경사지게 형성되고, 상기한 흡음재(2)의 재질은 PU폼(Poly Urethane Form)으로 형성된 것을 특징으로 하는 엔진의 흡기소음 감쇄장치.The buffer plate 3 is in a forward direction to the direction in which air flows and is inclined in a reverse direction to a direction in which the intake air discharge flows, and the material of the sound absorbing material 2 is formed of a PU foam (Poly Urethane Form). Intake noise reduction device of the engine.
KR1019990055301A 1999-12-07 1999-12-07 Decreasing apparatus of engine noise when air is inhaled KR100580729B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170005916A (en) 2015-07-06 2017-01-17 동아화성(주) Period injection blow molding machines for producing the air suction pipe

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030010006A (en) * 2001-07-25 2003-02-05 현대자동차주식회사 Noise reduction device for intake duct
CN108343588A (en) * 2018-01-16 2018-07-31 广州万宝集团压缩机有限公司 A kind of muffler and refrigeration compressor

Citations (5)

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Publication number Priority date Publication date Assignee Title
JPS5914958U (en) * 1982-07-21 1984-01-30 三菱自動車工業株式会社 intake pipe device
JPS5974125U (en) * 1982-11-10 1984-05-19 三菱自動車工業株式会社 Engine room air intake structure
JPH03106165A (en) * 1989-09-20 1991-05-02 Fujitsu Ltd Extension number conversion system
JPH03106165U (en) * 1989-12-15 1991-11-01
KR19990035081A (en) * 1997-10-31 1999-05-15 양재신 Intake Manifold Air Distribution Structure of Engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5914958U (en) * 1982-07-21 1984-01-30 三菱自動車工業株式会社 intake pipe device
JPS5974125U (en) * 1982-11-10 1984-05-19 三菱自動車工業株式会社 Engine room air intake structure
JPH03106165A (en) * 1989-09-20 1991-05-02 Fujitsu Ltd Extension number conversion system
JPH03106165U (en) * 1989-12-15 1991-11-01
KR19990035081A (en) * 1997-10-31 1999-05-15 양재신 Intake Manifold Air Distribution Structure of Engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170005916A (en) 2015-07-06 2017-01-17 동아화성(주) Period injection blow molding machines for producing the air suction pipe

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