KR20010059379A - Noise lowering bracket of high pressure fuel injector for engine - Google Patents

Noise lowering bracket of high pressure fuel injector for engine

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Publication number
KR20010059379A
KR20010059379A KR1019990066776A KR19990066776A KR20010059379A KR 20010059379 A KR20010059379 A KR 20010059379A KR 1019990066776 A KR1019990066776 A KR 1019990066776A KR 19990066776 A KR19990066776 A KR 19990066776A KR 20010059379 A KR20010059379 A KR 20010059379A
Authority
KR
South Korea
Prior art keywords
plate
cylinder block
bracket
fastening hole
fuel injector
Prior art date
Application number
KR1019990066776A
Other languages
Korean (ko)
Other versions
KR100337325B1 (en
Inventor
남충근
Original Assignee
이계안
현대자동차주식회사
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Application filed by 이계안, 현대자동차주식회사 filed Critical 이계안
Priority to KR1019990066776A priority Critical patent/KR100337325B1/en
Publication of KR20010059379A publication Critical patent/KR20010059379A/en
Application granted granted Critical
Publication of KR100337325B1 publication Critical patent/KR100337325B1/en

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Classifications

    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/48—Assembling; Disassembling; Replacing
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for

Abstract

PURPOSE: A noise reducing bracket of a high pressure fuel injector of an engine is provided to reduce vibration through adding an installing point of an intrinsic frequency and cylinder block while reducing amplitude through producing by using casting. CONSTITUTION: A noise reducing bracket(30) is formed by a first plate(32), a first combining hole(34), a second combining hole(36), a second plate(38), a third combining hole(40), and a fourth combining hole(42). The first plate is combined to a cylinder block(44) side. The first combining hole is formed on the first plate for being connected to a boss(46) of the cylinder block. The second combining hole is located on a vertical line from the first combining hole for being combined to the boss of the cylinder block. The second plate is vertically formed from the first plate for combining a fuel injector(48). The third combining hole on the second plate is formed to insert a bolt(50) of the fuel injector. The fourth combining hole is formed on the first plate for being combined to the cylinder block. Moreover, the noise reducing bracket is formed in casting while having plural reinforcing units to connect first and second combining holes to the first plate. Reinforcing ribs(54) are formed to support the first plate and the second plate.

Description

엔진의 고압 연료 분사 장치의 소음 저감 브라켓트{NOISE LOWERING BRACKET OF HIGH PRESSURE FUEL INJECTOR FOR ENGINE}Noise reduction bracket of high pressure fuel injector of engine {NOISE LOWERING BRACKET OF HIGH PRESSURE FUEL INJECTOR FOR ENGINE}

본 발명은 엔진의 고압 연료 분사 장치의 소음 저감 브라켓트에 관한 것으로서, 보다 상세하게는 기존 브라켓의 고유 진동수와 실린더 블록과의 장착점을 추가하여 진동 저감을 확대하고 주물로 제조하므로서 진폭 측면에서도 탁월한 효과가있는 엔진의 고압 연료 분사 장치의 소음 저감 브라켓트에 관한 것이다.The present invention relates to a noise reduction bracket of a high-pressure fuel injection device of an engine, and more particularly, by adding a mounting point between a natural frequency of an existing bracket and a cylinder block to increase vibration reduction and to manufacture a casting, thereby having an excellent effect in terms of amplitude. A noise reduction bracket of a high pressure fuel injection device of an engine.

도1은 종래기술에 따른 고압 연료 분사 장치의 체결 브라켓트를 도시한 사시도로, 체결 브라켓트(2)는 실린더 블럭(4)측에 연료 분사 장치(6)를 장착하는 브라켓트로, 실린더 블럭(4)에 2개의 볼트(8)로 장착되게 볼트공(10)을 뚫은 제1플레이트(12)를 형성하고 있다.1 is a perspective view showing a fastening bracket of a high-pressure fuel injection device according to the prior art, the fastening bracket 2 is a bracket for mounting the fuel injection device 6 on the cylinder block 4 side, the cylinder block (4) The first plate 12 having bored the bolt hole 10 is formed so as to be mounted with two bolts 8 at the bottom.

그리고 제1플레이트(12)에서 절곡되면서 연료 분사 장치(6)의 볼트를 1개의 너트(14)로 체결하게 1개의 볼트공(16)을 제2플레이트(18)에 형성하여 이루어지고 있다.Then, one bolt hole 16 is formed in the second plate 18 so as to be bent in the first plate 12 to fasten the bolt of the fuel injection device 6 with one nut 14.

기존 연료 분사 장치 대용으로 배기가스 저감을 만족하는 고압 연료 분사 장치를 채용하게 되고, 이를 체결 브라켓트(2)로 실린더 블록(4)에 장착하고 있다.Instead of the existing fuel injector, a high-pressure fuel injector that satisfies the reduction of exhaust gas is adopted, and the fastening bracket 2 is mounted on the cylinder block 4.

상기 연료 분사 장치는 엔진의 왼쪽에 설치되면서 유압 소음을 주로 600Hz 발생하고 있으며, 이 소음이 엔진의 왼쪽 방향 소음으로 90%를 차지하고 있다. (도8참조)The fuel injector is mainly installed at the left side of the engine to generate a hydraulic noise of 600 Hz, this noise occupies 90% of the left side of the engine noise. (See Fig. 8)

또, 엔진 다른 방향인 오른쪽이나 상측, 전측에 대해 4~5dBA 정도가 더 높아 엔진의 4방향 평균치를 좌우하고 있다.Moreover, about 4-5 dBA is higher about the right side, upper side, and the front side which are other directions of an engine, and it influences the average value of four directions of an engine.

따라서 2000년 소음 규제치를 만족하기 위하여 이 연료 분사 장치의 유발 소음을 저감하는 것이 필요하다.Therefore, it is necessary to reduce the induced noise of this fuel injector in order to satisfy the 2000 noise regulation.

다시말해 상기 체결 브라켓트(2)는 실린더 블록(4)에 형성한 2개의 보스(20)를 이용하고 연료 분사 장치에서는 1개의 체결 볼트(22)를 이용해 절곡된 기억자 형태로 체결하고 있다.In other words, the fastening bracket 2 uses two bosses 20 formed in the cylinder block 4, and the fuel injector uses one fastening bolt 22 for fastening in the form of a bent memory.

상기한 고압 연료 분사 장치를 체결 브라켓트로 실린더 블럭에 장착함에 따라 소음에 영향을 미치는 문제점이 있다.There is a problem that affects the noise by mounting the high-pressure fuel injection device to the cylinder block with a fastening bracket.

체결 브라켓트는 저압형 연료 분사 펌프에 적용되는 것으로 고압 연료 분사 장치에는 소음과 진동을 취약해 적용하기 어려운 문제점이 있다.The fastening bracket is applied to the low pressure fuel injection pump and has a problem that it is difficult to apply the noise and vibration to the high pressure fuel injection device.

상기한 체결 브라켓트는 형상 측면에서 실린더 블록의 보스에 2개 볼트로 체결되고 90°로 꺾이면서 연료 분사 장치에 장착되게 되어 있어 큰 가진력에 약한 형상을 하고 있으며, 엔진 좌우 방향 및 전후 방향의 진동에 대해 특히 취약하게 되어 있는 문제점이 있다.The above fastening bracket is fastened by two bolts to the boss of the cylinder block in the shape side and is mounted on the fuel injector while being turned at 90 ° to weaken the great excitation force. There is a problem that is particularly vulnerable to.

또, 체결 브라켓트는 고유 진동수 측면에서 연료 분사 기간이 최고 3000rpm 부근에서 크랭크 각 기준 12.6~14.3°로 엔진의 12차 가진력인 600Hz와 공진을 일으켜 (도8참조) 가진력 측면에서 큰 문제가 있고, 장착시 600부근에서 고유 진동수를 가지고 있어 큰 소음을 발생시키는 문제점이 있다.In addition, the fastening bracket has a big problem in terms of the excitation force due to resonance with 600 Hz, which is the 12th excitation force of the engine at 12.6 to 14.3 ° of the crank angle at a frequency of up to 3000 rpm in terms of natural frequency (see Fig. 8). Has a natural frequency in the vicinity of 600 o'clock has a problem that generates a large noise.

따라서 본 발명은 앞에서 언급한 바와 같은 문제점을 해결하기 위하여 발명된 것으로서, 본 발명의 목적은 기존 브라켓의 고유 진동수와 실린더 블록과의 장착점을 추가하여 진동 저감을 확대하고 주물로 제조하므로서 진폭 측면에서도 탁월한 효과가 있는 엔진의 고압 연료 분사 장치의 소음 저감 브라켓트를 제공하는데 있다.Therefore, the present invention has been invented to solve the above-mentioned problems, an object of the present invention is to increase the vibration reduction by adding the mounting point of the natural frequency of the existing bracket and the cylinder block, and excellent in terms of amplitude as manufactured It is to provide a noise reduction bracket of the high pressure fuel injection device of the engine that is effective.

도1은 종래기술에 따른 고압 연료 분사 장치의 체결 브라켓트를 도시한 사시도.1 is a perspective view showing a fastening bracket of a high-pressure fuel injection device according to the prior art.

도2는 본 발명에 따른 소음 저감 브라켓트를 도시한 사시도.Figure 2 is a perspective view of the noise reduction bracket according to the present invention.

도3은 본 발명에 따른 소음 저감 브라켓트를 도시한 정면도.Figure 3 is a front view showing a noise reduction bracket according to the present invention.

도4는 도3의 A-A를 도시한 도면.4 shows A-A of FIG. 3;

도5는 본 발명에 따른 소음 저감 브라켓트를 도시한 평면도.Figure 5 is a plan view showing a noise reduction bracket according to the present invention.

도6은 도5의 B-B를 도시한 도면.FIG. 6 shows B-B of FIG. 5;

도7은 본 발명에 따른 소음 저감 브라켓트를 도시한 측면도.Figure 7 is a side view showing a noise reduction bracket according to the present invention.

도8은 브라켓트를 적용하여 시험시 나타나는 선도를 도시한 도면8 is a diagram showing a diagram appearing during a test by applying a bracket;

이를 실현하기 위한 본 발명은The present invention for realizing this

실린더 블럭의 보스에 체결되는 제1판과,A first plate fastened to the boss of the cylinder block,

상기 제1판에 실린더 블록의 보스에 체결되게 뚫어 형성한 제1체결공과,A first fastening hole formed by being fastened to the boss of the cylinder block in the first plate;

상기 제1체결공으로 부터 수직선상에 위치하면서 일정 간격 이격되어 형성되는 제2체결공과,A second fastening hole formed on a vertical line from the first fastening hole and spaced apart from each other by a predetermined interval;

상기 제1판에서 수직으로 형성되어 연료 분사 장치를 체결하게 되는 제2판과,A second plate vertically formed on the first plate to fasten the fuel injection device;

상기 제2판에 연료 분사 장하다 볼트가 삽입되게 형성한 제3체결공과,A third fastening hole formed to insert a fuel injection preventing bolt into the second plate;

상기 제2판과 동일 수직선상의 하단 제1판에 실린더 블럭과 체결하게 형성한 제4체결공을 포함하여 이루어지는 엔진의 고압 연료 분사 장치의 소음 저감 브라켓트를 제공하는데 있다.It is to provide a noise reduction bracket of the high-pressure fuel injection device of the engine comprising a fourth fastening hole formed to engage the cylinder block on the lower first plate on the same vertical line as the second plate.

이하 본 발명의 바람직한 구성 및 작용을 첨부한 도면에 의거하여 보다 상세하게 설명하면 다음과 같다.Hereinafter, the preferred configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

도2는 본 발명에 따른 소음 저감 브라켓트를 도시한 사시도로, 소음 저감 브라켓트(30)는 제1판(32), 제1체결공(34), 제2체결공(36), 제2판(38), 제3체결공(40), 제4체결공(42)을 형성하여 이루어지고 있다.Figure 2 is a perspective view showing a noise reduction bracket according to the present invention, the noise reduction bracket 30 is the first plate 32, the first fastening hole 34, the second fastening hole 36, the second plate ( 38), the third fastening hole 40 and the fourth fastening hole 42 are formed.

제1판(32)은 실린더 블럭(44)측에 체결되는 판이다.The first plate 32 is a plate fastened to the cylinder block 44 side.

제1체결공(34)은 제1판(32)에 실린더 블록(44)의 보스(46)에 체결되게 뚫려 형성되고 있다.The first fastening hole 34 is formed to be fastened to the boss 46 of the cylinder block 44 by the first plate 32.

제2체결공(36)은 제1체결공(34)으로 부터 수직선상에 위치하면서 일정 간격 이격되어 역시 실린더 블록(44)의 보스(46)에 체결되게 뚫려 형성되고 있다. (도3참조)The second fastening hole 36 is positioned on a vertical line from the first fastening hole 34 and spaced apart from each other by a predetermined interval to be fastened to be fastened to the boss 46 of the cylinder block 44. (See Fig. 3)

제2판(38)은 제1판(32)에서 수직으로 형성되어 연료 분사 장치(48)를 체결하게 되는 판이다. (도7 참조)The second plate 38 is a plate which is vertically formed in the first plate 32 to fasten the fuel injection device 48. (See Fig. 7)

제3체결공(40)은 제2판(38)에 연료 분사 장하다(48)의 볼트(50)가 삽입되게 뚫어 형성하고 있다.The third fastening hole 40 is formed by boring the bolt 50 of the fuel injection barrier 48 into the second plate 38.

제4체결공(42)은 제2판(38)과 동일 수직선상의 하단 제1판(32)에 실린더 블럭(44)과 체결하게 형성하고 있다. (도3참조)The fourth fastening hole 42 is formed to engage the cylinder block 44 on the lower first plate 32 on the same vertical line as the second plate 38. (See Fig. 3)

상기한 소음 저감 브라켓트(30)는 주물로 형성되고 있으며, 제1판(32)에 제1,2체결공(34)(36)을 연결하는 보강부(52)를 다수 형성하고 있다. (도4 참조)The noise reduction bracket 30 is formed of a casting, and a plurality of reinforcing portions 52 connecting the first and second fastening holes 34 and 36 to the first plate 32 are formed. (See Fig. 4)

그리고 제1판(32)과 제2판(38)을 상호 지지하게 보강리브(54)를 복수개 형성하고 있다. (도6참조)A plurality of reinforcing ribs 54 are formed to mutually support the first plate 32 and the second plate 38. (See Fig. 6)

상기한 바와 같이 이루어지는 본 발명의 작용을 설명하면 실린더 블럭(44)에 연료 공급 장치를 설치할 때 소음 저감 브라켓트(30)를 주물로 제작하고 여기에 제1,2,4 체결공(34)(36)(42)을 형성하므로서 체결점을 증대하여 종전의 브라켓트가 가지고 있는 형상의 취약점을 극복이 이루어진다.Referring to the operation of the present invention made as described above, when the fuel supply device is installed in the cylinder block 44, the noise reduction bracket 30 is made of a casting, and the first, second and fourth fastening holes 34 and 36 are By increasing the fastening point by forming the 42, overcoming the weaknesses of the shape of the conventional bracket is achieved.

소음 저감 브라켓트(30)의 고유 진동수를 제4체결공(42)을 증가시킴으로서 공진점을 피할 수 있게 한다.By increasing the natural fastening frequency of the noise reduction bracket 30 to the fourth fastening hole 42, the resonance point can be avoided.

이에 따라 소음 저감 브라켓트(30)가 가지는 진폭도 주풀로 재질을 개선함에 따라 선도와 같이 낮추어진다.Accordingly, the amplitude of the noise reduction bracket 30 is also lowered as in the diagram as the material is improved by the main pull.

다시말해 연료 분사 시간이 3000rpm부금에서 크랭크각 기준 12.6°~14.3°로엔진의 12차 기전력인 600Hz와의 공진이 제4체결공(42)을 이용 실린더 블럭에 장착하므로서 가진력의 발생을 해소하게 된다.In other words, at a fuel injection time of 3000rpm, resonance with the engine's 12th electromotive force 600Hz at 12.6 ° ~ 14.3 ° based on the crank angle is eliminated by mounting the fourth fastening hole 42 in the cylinder block.

엔진의 소음 진동등의 성능을 대폭 향상하게 되어 기술의 신뢰성을 높히게 된다.The performance of the engine, such as noise and vibration is greatly improved, thereby increasing the reliability of the technology.

실외의 소음 규제에 대해 대응이 향상 된다.The response to outdoor noise regulation is improved.

엔진 소음 감소로 실내 유입 소음이 저감되어 승객의 승차감과 편의성이 향상된다.Reduction of engine noise reduces indoor noise, improving passenger comfort and convenience.

Claims (4)

실린더 블럭의 보스에 체결되는 제1판과,A first plate fastened to the boss of the cylinder block, 상기 제1판에 실린더 블록의 보스에 체결되게 뚫어 형성한 제1체결공과,A first fastening hole formed by being fastened to the boss of the cylinder block in the first plate; 상기 제1체결공으로 부터 수직선상에 위치하면서 일정 간격 이격되어 형성되는 제2체결공과,A second fastening hole formed on a vertical line from the first fastening hole and spaced apart from each other by a predetermined interval; 상기 제1판에서 수직으로 형성되어 연료 분사 장치를 체결하게 되는 제2판과,A second plate vertically formed on the first plate to fasten the fuel injection device; 상기 제2판에 연료 분사 장치의 볼트가 삽입되게 형성한 제3체결공과,A third fastening hole formed to insert the bolt of the fuel injection device into the second plate; 상기 제2판과 동일 수직선상의 하단 제1판에 실린더 블럭과 체결하게 형성한 제4체결공을 포함하여 이루어지는 엔진의 고압 연료 분사 장치의 소음 저감 브라켓트.And a fourth fastening hole formed in the lower first plate on the same vertical line as the second plate so as to be engaged with the cylinder block. 청구항 1에 있어서, 제4체결공은 제2판과 동일 수직선상의 하단 제1판에 실린더 블럭과 체결하게 형성되어 이루어지는 엔진의 고압 연료 분사 장치의 소음 저감 브라켓트.The noise reduction bracket of claim 1, wherein the fourth fastening hole is formed to be engaged with the cylinder block on the lower first plate on the same vertical line as the second plate. 청구항 1에 있어서, 소음 저감 브라켓트는 주물로 형성되고 있으며, 제1판에 제1,2체결공을 연결하는 보강부를 다수 형성하여 이루어지는 엔진의 고압 연료 분사 장치의 소음 저감 브라켓트.The noise reduction bracket of claim 1, wherein the noise reduction bracket is formed of a casting, and a plurality of reinforcing portions connecting the first and second fastening holes are formed in the first plate. 청구항 1에 있어서, 제1판과 제2판을 상호 지지하게 보강리브를 복수개 형성하여 이루어지는 엔진의 고압 연료 분사 장치의 소음 저감 브라켓트.The noise reduction bracket of the high pressure fuel injection device of an engine according to claim 1, wherein a plurality of reinforcing ribs are formed to mutually support the first plate and the second plate.
KR1019990066776A 1999-12-30 1999-12-30 Noise lowering bracket of high pressure fuel injector for engine KR100337325B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100124303A (en) * 2008-02-22 2010-11-26 브레우어 사이언스 인코포레이션 Dual-layer light-sensitive developer-soluble bottom anti-reflective coatings for 193-nm lithography

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100124303A (en) * 2008-02-22 2010-11-26 브레우어 사이언스 인코포레이션 Dual-layer light-sensitive developer-soluble bottom anti-reflective coatings for 193-nm lithography

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