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KR100263743B1 - Variable intake structure according to engine speed - Google Patents

Variable intake structure according to engine speed Download PDF

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Publication number
KR100263743B1
KR100263743B1 KR1019960037880A KR19960037880A KR100263743B1 KR 100263743 B1 KR100263743 B1 KR 100263743B1 KR 1019960037880 A KR1019960037880 A KR 1019960037880A KR 19960037880 A KR19960037880 A KR 19960037880A KR 100263743 B1 KR100263743 B1 KR 100263743B1
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South Korea
Prior art keywords
spring pipe
hydraulic cylinder
engine
solenoid valve
hydraulic pressure
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KR1019960037880A
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KR19980019673A (en
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오정한
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정몽규
현대자동차주식회사
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B27/00Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
    • F02B27/02Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Characterised By The Charging Evacuation (AREA)

Abstract

PURPOSE: Variable intake structure is provided to improve output at a low speed and reduce fuel consumption by varying the diameter of an intake manifold according to the rpm(revolutions per minute) of an engine with regulating hydraulic pressure by an electronic control unit. CONSTITUTION: A variable geometric induction system comprises a spring pipe(3) between an engine and a surge tank; a hydraulic cylinder(4) expanding or contracting the diameter of the spring pipe; a solenoid valve(5) supplying actuating fluid to the hydraulic cylinder; and an electronic control unit(6) controlling the solenoid valve. The electronic control unit controls the operation of the solenoid valve based on rpm of an engine, and regulates the hydraulic pressure supplied to the hydraulic cylinder. The diameter of the spring pipe is increased by operating the hydraulic cylinder, and reduced with pushing a piston rod(4A) of the hydraulic cylinder by restoring force of the spring pipe in eliminating the hydraulic pressure from the hydraulic cylinder. An airtight member is inserted between contact faces around the cut end of the folded spring pipe, and slid between the contact faces according to the operation of the hydraulic cylinder. The variable geometric induction system adjusts the amount of suction air according to the rpm of the engine.

Description

엔진 회전수에 따른 가변 흡기 구조Variable intake structure according to engine speed

본 발명은 엔진 회전수에 따라서 직경이 가변적으로 변화될 수 있도록 하여 흡입 공기 조절에 따른 연료 절감과 출력이 향상될 수 있도록 하는 엔진 회전수에 따른 가변 흡기 구조에 대한 것이다.The present invention relates to a variable intake structure according to the number of revolutions of the engine which can vary the diameter according to the number of revolutions of the engine so as to improve the fuel saving and the output according to the intake air control.

일반적인 엔진의 흡기 구조는 도 3에서 보는바와 같이 일단은 서지 탱크(2)와 연결되고, 타단은 엔진(1)의 흡기 포트에 연결되어 엔진 부압에 따라 공기가 적절하게 엔진(1)의 연소실내로 공급될 수 있도록 하는 구조이다.3, one end is connected to the surge tank 2, and the other end is connected to the intake port of the engine 1, so that the air is appropriately sucked into the combustion chamber of the engine 1 As shown in Fig.

이같은 공기 공급을 위해 구비되는 인테이크 매니폴드(8)는 보통 일정한 직경으로서 주물 제작되어 스로틀 밸브 작동에 따라 흡입 공기를 서지 탱크(2)로부터 전달받아 엔진(1)으로 공급되도록 하는 중개역할을 하게 된다.The intake manifold 8, which is provided for air supply, is usually manufactured as a casting with a predetermined diameter, and serves as an intermediary for receiving the intake air from the surge tank 2 and supplying the intake air to the engine 1 in accordance with the operation of the throttle valve .

그러나 상기와 같은 인테이크 매니폴드(8)는 단순히 엔진 부압에 의해 서지 탱크(2)내로 유입된 공기가 통과되도록 하여 연소실로 공급될 수 있도록 하는 통로로서의 역할만 수행하게 되는바 현재는 스로틀 밸브외에 흡입 공기의 공급량을 제어할 수 있는 별다른 구조가 없으므로 정밀한 제어가 이루어지지 못하고 있으며, 따라서 배기 가스를 다량으로 배출시키거나 특히 저속에서의 엔진 출력이 낮아지게 되는 문제점이 있다.However, the intake manifold 8 functions only as a passage through which the air introduced into the surge tank 2 can be supplied to the combustion chamber by the negative pressure of the engine. At this time, Precise control can not be achieved because there is no other structure capable of controlling the amount of air to be supplied. Therefore, there is a problem that the exhaust gas is discharged in a large amount, or the engine output at low speed is lowered.

이에 본 발명은 상기와 같은 문제점을 감안하여 이를 시정 보완시키기 위한 것으로서, 본 발명은 인테이크 매니폴드의 직경이 전자적인 제어로 유압에 의해서 엔진 회전수에 따라 가변적으로 변할 수 있도록 하여 저속에서의 출력 향상과 함께 연료의 소비가 절감될 수 있도록 하는데 주된 목적이 있다.SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide an intake manifold capable of variably changing the diameter of an intake manifold according to the engine speed, And the fuel consumption can be reduced.

상기한 목적을 달성하기 위한 본 발명은According to an aspect of the present invention,

길이 방향으로 절개되고, 각 절개 단부의 내외주면간을 밀착시켜 겹쳐지도록 형성되어 흡기를 엔진으로 공급하는 스프링 파이프와;A spring pipe which is cut in the longitudinal direction and formed so as to overlap the inside and outside circumferential surfaces of the respective cut end portions to overlap each other and supply the intake air to the engine;

상기 스프링 파이프의 절개 단부를 중심으로 서로 대칭되는 곳에 위치하도록 스프링 파이프의 외주면상에 돌출 형성되는 지지편과;A support piece protruding from an outer circumferential surface of the spring pipe so as to be symmetrical with respect to the cut end of the spring pipe;

유압 공급시 출몰하여 상기 양측 지지편을 가압시켜 스프링 파이프의 내경이 커지도록 하는 피스톤 로드를 수용하고 있는 유압실린더와;A hydraulic cylinder that accommodates a piston rod that protrudes and retracts when the hydraulic pressure is supplied to press the both side support pieces so as to increase the inner diameter of the spring pipe;

상기 유압 실린더로의 유압 공급을 단속하는 솔레노이드 밸브와;A solenoid valve for interrupting supply of hydraulic pressure to the hydraulic cylinder;

엔진회전수의 증감에 따라 상기 솔레노이드를 구동시켜 엔진 회전수가 높을때는 스프링 파이프의 내경이 커지고, 엔진회전수가 낮을 때는 스프링 파이프의 내경이 작아지도록 제어하는 전자 제어장치;로 이루어지도록 하는 구성이 특징이다.And an electronic control device for driving the solenoid in accordance with an increase or decrease in the number of revolutions of the engine to control the inner diameter of the spring pipe to be large when the engine speed is high and decrease the inner diameter of the spring pipe when the engine speed is low .

도 1은 본 발명에 따른 요부 단면 구조도1 is a cross-sectional structural view of a main part according to the present invention

도 2는 동 발명에 따른 작동 상태도Fig. 2 shows an operating state diagram

도 3은 종래의 흡기 구조도Fig. 3 is a cross-

*도면중주요부분에대한부호의설명*Description of the Related Art [0002]

1 : 엔진2 : 서지 탱크1: Engine 2: Surge tank

3 : 스프링 파이프 3A : 지지편3: Spring pipe 3A: Support piece

4 : 유압 실린더 4A : 피스톤 로드4: Hydraulic cylinder 4A: Piston rod

5 : 솔레노이드 밸브 6 : 전자 제어 장치5: Solenoid valve 6: Electronic control device

도 1은 본 발명에 따른 실시예 구조를 도시한 것으로서, 도면 부호 1은 엔진이며, 2는 서지 탱크이다.Fig. 1 shows the structure of an embodiment according to the present invention. In Fig. 1, reference numeral 1 denotes an engine, and 2 denotes a surge tank.

상기의 도면에서 보는바와 같이 본 발명은 엔진(1)과 서지 탱크(2)간으로 스프링 파이프(3)와 상기 스프링 파이프(3)의 직경을 확장 또는 축소시키도록 하는 유압 실린더(4)와 상기 유압 실린더(4)에 작동유를 공급시키는 솔레노이드 밸브(5)와 상기 솔레노이드 밸브(5)를 제어하는 전자 제어 장치(6, Electronic Control Unit)로서 이루어지도록 하는 구성이다.As shown in the drawings, the present invention includes a hydraulic cylinder 4 for expanding or reducing the diameters of the spring pipe 3 and the spring pipe 3 between the engine 1 and the surge tank 2, A solenoid valve 5 for supplying operating oil to the hydraulic cylinder 4 and an electronic control unit 6 for controlling the solenoid valve 5. [

상기 전자 제어 장치(6)는 엔진 회전수를 감안하여 상기 솔레노이드 밸브(5)의 작동을 제어하므로서 상기 유압 실린더(4)로의 공급 유압을 조절한다.The electronic control unit 6 controls the operation of the solenoid valve 5 in consideration of the engine speed to control the hydraulic pressure supplied to the hydraulic cylinder 4. [

이같은 유압의 공급에 의해 유압 실린더(4) 양측으로 인출입이 가능토록 돌설시킨 피스톤 로드(4A)가 상기 스프링 파이프(3)의 양측 외주면으로부터 돌설시킨 지지편(3A)을 밀도록 고정시킨 구조이다.The piston rod 4A projected to both sides of the hydraulic cylinder 4 by the supply of the hydraulic pressure is fixed to push the support piece 3A projecting from the outer circumferential surfaces of both sides of the spring pipe 3 .

상기 유압 실린더(4)의 작동에 의해 스프링 파이프(3)는 직경이 확장되게 되며, 반대로 유압 실린더(4)로 공급된 유압을 제거시키게 되면 스프링 파이프(3)의 복원력에 의해 상기 유압 실린더(4)의 피스톤 로드(4A)를 밀어 상기 스프링 파이프(3)의 직경을 수축시키게 된다.The diameter of the spring pipe 3 is enlarged by the operation of the hydraulic cylinder 4. Conversely, when the hydraulic pressure supplied to the hydraulic cylinder 4 is removed, the hydraulic pressure in the hydraulic cylinder 4 The piston rod 4A of the spring pipe 3 is pushed to contract the diameter of the spring pipe 3.

한편 상기 스프링 파이프(3)의 겹쳐지는 절개 단부의 내외주면 접촉면간에는 기밀부재()가 개재되도록 하여 상기 유압 실린더(4)의 작동에 따라 접촉면간을 슬라이딩 이동하면서 기밀을 유지시키게 된다.On the other hand, an airtight member () is interposed between the inner and outer main surface contact surfaces of the overlapping cut end of the spring pipe (3), and airtightness is maintained while sliding between the contact surfaces according to the operation of the hydraulic cylinder (4).

상기와 같은 구성에 따른 본 발명은 엔진 회전수에 따라서 공기 흡입량이 조절될 수 있도록 하는 것이다.According to the present invention, the air intake amount can be adjusted according to the number of revolutions of the engine.

즉 낮은 엔진 회전수에서는 공기 흡입 통로의 직경이 작아지게 하여 흡입 공기의 흡입 속도를 가속화시켜 보다 적은 연료에 의해서도 충분한 혼합기를 형성토록 하며, 높은 엔진의 고회전시에는 상기 공기 흡입 통로의 직경을 확장시켜 흡입 공기량을 증대시키게 된다.That is, at a low engine speed, the diameter of the air intake passage is reduced to accelerate the intake speed of the intake air, thereby forming a sufficient mixer even with less fuel, and when the engine is rotating at a high speed, The amount of intake air is increased.

이와같은 작용을 위해 엔진(1)과 서지 탱크(2)간을 연결하는 인테이크 매니폴드를 스프링 파이프(3)로 형성하되 상기 파이프(3)는 길이방향으로 절개된 양단부가 안쪽과 바깥쪽에서 긴밀하게 겹쳐지도록 하고, 일정한 직경으로 복귀되려는 탄성을 갖는다.For this purpose, an intake manifold for connecting between the engine 1 and the surge tank 2 is formed by a spring pipe 3, and both ends of the pipe 3, which are cut in the longitudinal direction, And have elasticity to return to a constant diameter.

이같은 스프링 파이프(3)에는 양측 외주면으로 각각 지지편(3A)이 돌설되도록 하여 상기 지지편(3A)을 유압 실린더(4)의 양측 피스톤 로드(4A)에 의해서 밀려질 수 있도록 한다.The support pieces 3A are provided on both outer peripheral surfaces of the spring pipe 3 so that the support pieces 3A can be pushed by the both side piston rods 4A of the hydraulic cylinder 4. [

한편 상기 유압 실린더(4)는 엔진 회전수를 체크하게 되는 전자 제어 장치(6)에 의해 솔레노이드 밸브(5)를 작동시키므로서 공급되는 유압에 의해 작동하게 된다.On the other hand, the hydraulic cylinder (4) operates the solenoid valve (5) by the electronic control unit (6) which checks the engine speed, so that it operates by the supplied hydraulic pressure.

이에 따라 차량은 저속에서 상기 스프링 파이프(3)의 직경을 작게 하여 흡입되는 공기의 유속을 증대시키므로서 적은 흡입 공기에 의해서도 연료와의 혼합성을 증대시켜 연소 효율을 향상시킬 수가 있게 된다.Accordingly, since the diameter of the spring pipe 3 is reduced at a low speed of the vehicle, the flow rate of the air sucked is increased, so that the mixing efficiency with the fuel is increased by the small amount of intake air, thereby improving the combustion efficiency.

또한 보다 적은 연료에 의해서 충분한 엔진 출력을 얻을 수가 있으며, 따라서 배기 가스의 배출량을 현저하게 감소시킬 수가 있게 된다.In addition, a sufficient engine output can be obtained with a smaller amount of fuel, so that the emission amount of the exhaust gas can be remarkably reduced.

그리고 엔진 회전수가 증가되면서 전자 제어 장치(6)에서는 솔레노이드 밸브(5)의 작동유 공급 통로 개방을 점차 증가시키게 되는바 이같은 유압 증가에 따라 유압 실린더(4)는 피스톤 로드(4A)를 인출시켜 상기 스프링 파이프(3)의 외주면 양측으로 돌설시킨 지지편(3A)을 밀도록 하므로서 스프링 파이프(3)의 내경을 점차 확장시키게 된다.As the number of revolutions of the engine increases, the electronic control unit 6 gradually increases the opening of the hydraulic oil supply passage of the solenoid valve 5. As the hydraulic pressure increases, the hydraulic cylinder 4 draws the piston rod 4A, The inner diameter of the spring pipe 3 is gradually expanded by pushing the support pieces 3A protruding to both sides of the outer peripheral surface of the pipe 3. [

이러한 작동에 의해 엔진 회전수가 증가하면서 흡입 공기량은 점차 증가하게 되므로 적절한 공기와 연료의 혼합비를 유지시킬 수가 있게 된다.This operation increases the number of revolutions of the engine and gradually increases the amount of intake air, so that it is possible to maintain a suitable mixture ratio of air and fuel.

한편 스프링 파이프(3)가 확장 또는 수축시 겹쳐지게 되는 절개 단부의 접촉면간으로는 별도의 기밀 부재(7)가 일측면에 부착되도록 하므로서 접촉면간을 슬라이딩시 흡입 통로로의 오일 유입과 공기의 누출이 방지시키게 된다.Meanwhile, since the sealing member 7 is attached to one side surface of the contact surface of the cut end where the spring pipe 3 overlaps at the time of expansion or contraction, the leakage of the oil into the suction passage and the leakage of air .

그러므로 본 발명은 엔진 회전수 변화에 따라 흡입 공기를 단계적으로 조절할 수 있도록 하므로서 정밀한 엔진 제어가 가능해지도록 하는 동시에 연료 절감과 함께 엔진 출력을 향상시킬 수 있도록 하며, 특히 배기 가스를 줄일 수 있도록 하는 매우 유용한 효과가 있게 되는 것이다.Therefore, the present invention makes it possible to control the intake air in a stepwise manner according to the change in the engine speed, thereby making it possible to control the engine precisely, and to improve the engine output with the fuel saving. Especially, It will be effective.

Claims (2)

길이 방향으로 절개되고, 각 절개 단부의 내외주면간을 밀착시켜 겹쳐지도록 형성되어 흡기를 엔진으로 공급하는 스프링 파이프와;A spring pipe which is cut in the longitudinal direction and formed so as to overlap the inside and outside circumferential surfaces of the respective cut end portions to overlap each other and supply the intake air to the engine; 상기 스프링 파이프의 절개 단부를 중심으로 서로 대칭되는 곳에 위치하도록 스프링 파이프의 외주면상에 돌출 형성되는 지지편과;A support piece protruding from an outer circumferential surface of the spring pipe so as to be symmetrical with respect to the cut end of the spring pipe; 유압 공급시 출몰하여 상기 양측 지지편을 가압시켜 스프링 파이프의 내경이 커지도록 하는 피스톤 로드를 수용하고 있는 유압실린더와;A hydraulic cylinder that accommodates a piston rod that protrudes and retracts when the hydraulic pressure is supplied to press the both side support pieces so as to increase the inner diameter of the spring pipe; 상기 유압 실린더로의 유압 공급을 단속하는 솔레노이드 밸브와;A solenoid valve for interrupting supply of hydraulic pressure to the hydraulic cylinder; 엔진회전수의 증감에 따라 상기 솔레노이드를 구동시켜 엔진 회전수가 높을때는 스프링 파이프의 내경이 커지고, 엔진회전수가 낮을 때는 스프링 파이프의 내경이 작아지도록 제어하는 전자 제어 장치;An electronic control device for driving the solenoid according to an increase or decrease in the number of revolutions of the engine to control the inner diameter of the spring pipe to be large when the engine speed is high and decrease the inner diameter of the spring pipe when the engine speed is low; 제 1 항에 있어서,The method according to claim 1, 상기 내외주면간이 밀착되면서 겹쳐지게 되는 스프링 파이프의 절개 단부측 밀착면간으로 개재되어 상기 스프링 파이프 내경 변화시 슬라이딩 작동되도록 기밀부재가 구비됨을 특징으로 하는 엔진 회전수에 따른 가변 흡기 구조.Wherein the hermetically sealed member is provided between the close contact surface of the spring pipe overlapping with the inner and outer circumferential surfaces of the spring pipe so as to slide when the inner diameter of the spring pipe changes.
KR1019960037880A 1996-09-02 1996-09-02 Variable intake structure according to engine speed Expired - Fee Related KR100263743B1 (en)

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KR100463056B1 (en) * 2002-10-08 2004-12-23 현대자동차주식회사 Variable tail pipe apparatus
KR102379124B1 (en) * 2020-10-15 2022-03-28 한국기계연구원 Burner for gas turbine combustor with structure for reduction of combustion oscillation and gas turbine combustor having the same

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JPS6229441U (en) * 1985-08-06 1987-02-23

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JPS6229441U (en) * 1985-08-06 1987-02-23

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