KR20080054610A - Variable intake system in an engine - Google Patents

Variable intake system in an engine Download PDF

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Publication number
KR20080054610A
KR20080054610A KR1020060127072A KR20060127072A KR20080054610A KR 20080054610 A KR20080054610 A KR 20080054610A KR 1020060127072 A KR1020060127072 A KR 1020060127072A KR 20060127072 A KR20060127072 A KR 20060127072A KR 20080054610 A KR20080054610 A KR 20080054610A
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KR
South Korea
Prior art keywords
cylinder
flap
runner
engine
actuator
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KR1020060127072A
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Korean (ko)
Inventor
김주인
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현대자동차주식회사
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Priority to KR1020060127072A priority Critical patent/KR20080054610A/en
Publication of KR20080054610A publication Critical patent/KR20080054610A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B27/00—Use 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
    • F02B27/02—Use 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
    • F02B27/0226—Use 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 characterised by the means generating the charging effect
    • 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
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10072—Intake runners
    • 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
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving 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

A variable intake system for an engine is provided to prevent noise from being generated due to flow of air, which is introduced into a combustor through a runner of each cylinder, by allowing an opening and closing speed of a flap to mate with an engine RPM. A variable intake system for an engine comprises a flap(12) installed at a runner(10) of each cylinder of an intake manifold. An actuator(14) independently adjusts opening and closing of the runner of each cylinder by rotating the flap. A controller(16) outputs an operating signal to the actuator such that a corresponding to runner is opened by rotating the flap according to an intake stroke of each cylinder. The flap is installed at the runner of each cylinder such that the flap rotates about a rotating shaft(14a). The rotating shaft rotates as the actuator is driven.

Description

엔진의 가변 흡기장치{variable intake system in an engine}Variable intake system in an engine

도 1은 본 발명에 따른 엔진의 가변 흡기장치의 구성을 개략적으로 도시한 도면.1 is a view schematically showing the configuration of a variable intake apparatus of an engine according to the present invention.

본 발명은 각 기통별 런너에 플랩을 개별적으로 설치하고, 각 플랩의 개방이 각 기통별 흡입행정에 맞춰 이루어지도록 조절함으로써, 흡기소음을 줄일 수 있도록 하는 엔진의 가변 흡기장치에 관한 것이다.The present invention relates to a variable intake apparatus of an engine to reduce the intake noise by installing the flap in the runner for each cylinder individually, and adjusting the opening of each flap in accordance with the intake stroke for each cylinder.

일반적으로 엔진의 가변 흡기장치(VIS; variable intake system)는 공기의 유동경로를 조절하여 엔진의 고 회전수 대역에서 츨력을 향상시킬 수 있도록 하는 것인 바, 상기 가변 흡기장치는 엔진의 배기량이 큰 6기통의 승용차량에 주로 설치되고 있다.In general, the variable intake system (VIS) of the engine is to adjust the flow path of the air to improve the output in the high speed range of the engine bar, the variable intake system is a large displacement of the engine It is mainly installed in six-cylinder passenger vehicles.

즉, 종래 엔진의 가변 흡기장치는 각 기통별 런너에 개별적으로 설치된 플랩(flap)을 단일의 회전축상에 설치하고, 엔진의 회전수에 따라 모든 기통에 설치된 런너를 동시에 개폐시키는 구조로 이루어진다.In other words, the variable intake apparatus of the conventional engine has a structure in which a flap separately provided to each runner for each cylinder is installed on a single rotation shaft, and the runners installed in all cylinders are opened and closed simultaneously according to the number of revolutions of the engine.

이에 따라, 종래 엔진의 가변 흡기장치에서는 엔진의 회전수에 따라 공기의 유동경로를 조절하여 엔진의 출력을 변화시킬 수 있어 차량의 출력 성능면에서는 유리하지만, 모든 기통에 설치된 런너에 대한 개폐를 동시에 조절하는 구조이므로, 플랩의 개폐시 플랩의 주위에서 발생되는 압력의 맥동(pulsation)과 난류유동으로 인한 기류성 이음(異音)이 발생정도가 과다하게 되어 상품성의 측면에서 불리한 요소로 작용하고 있다. Accordingly, in the conventional intake apparatus of the engine, it is possible to change the output of the engine by adjusting the flow path of air according to the number of revolutions of the engine, which is advantageous in terms of output performance of the vehicle, Since the structure is controlled, the degree of generation of airflow spout due to pulsation and turbulent flow of pressure generated around the flap during opening and closing of the flap acts as a disadvantage in terms of merchandise. .

이는 플랩에 대한 개폐의 조절이 흡입행정이 아닌 실린더측 런너에 설치된 플랩에서도 동시에 발생되기 때문에 기인하는 현상이다.This is due to the fact that the adjustment of the opening and closing with respect to the flap occurs simultaneously in the flap provided in the cylinder runner, not the suction stroke.

또한, 원가의 절감과 경량화를 목적으로 채택되고 있는 플라스틱재 흡기 매니폴드로 인해, 상기와 같은 기류성 이음의 발생문제는 더욱 악화되고 있는 데, 이는 플라스틱재 흡기 매니폴드의 강성이 기존의 알루미늄재 흡기 매니폴드에 비해 취약하고, 또한 플랩의 개폐시 발생된 기류성 이음이 흡기 매니폴드의 벽면을 타고 대기중으로 방사되기 쉽기 때문이다.In addition, due to the plastic intake manifold, which has been adopted for the purpose of cost reduction and light weight, the problem of occurrence of airflow joints is exacerbated. This is due to the rigidity of the plastic intake manifold. This is because it is more vulnerable than the intake manifold, and airflow joints generated during opening and closing of the flap are likely to be radiated to the atmosphere on the wall of the intake manifold.

이에 본 발명은 상기와 같은 제반 사안들을 해소하기 위해 안출된 것으로, 각 기통별 런너에 개별적으로 플랩을 설치하고, 각 플랩의 개폐를 엔진의 회전수와 각 기통별 흡입행정에 맞춰 이루어지도록 하여 기류성 이음의 발생 정도를 현저하게 줄일 수 있도록 하는 데 그 목적이 있다.Accordingly, the present invention has been devised to solve the above-mentioned problems, and to install the flap to the runner for each cylinder individually, and to open and close each flap in accordance with the rotational speed of the engine and the suction stroke for each cylinder The aim is to significantly reduce the incidence of sex joints.

상기와 같은 목적을 달성하기 위한 본 발명은, 흡기 매니폴드의 각 기통별 런너에 개별적으로 설치된 플랩과; The present invention for achieving the above object, and the flap provided separately to each runner of each cylinder of the intake manifold;

상기 플랩을 선회시켜 상기 각 기통별 런너의 개폐를 독립적으로 조절하는 액츄에이터 및; An actuator for turning the flap to independently control opening and closing of the runner for each cylinder;

흡기측 캠 샤프트의 각도와 엔진의 회전수를 각각 검출하여, 상기 각 기통별 실린더의 흡기행정 마다 해당 기통별 런너에 설치된 상기 플랩을 선회시켜 해당 런너를 개방시킴과 더불어, 상기 플랩의 개폐시 엔진의 회전수와 연동하여 상기 플랩의 개폐속도를 제어하도록 상기 액츄에이터의 작동속도를 가변적으로 제어하는 제어부를 포함하여 구성되는 것을 특징으로 한다.Detects the angle of the intake camshaft and the engine rotation speed, and turns the flap provided in the runner for each cylinder for each intake stroke of the cylinder for each cylinder to open the runner, and the engine when opening and closing the flap. It characterized in that it comprises a control unit for variably controlling the operating speed of the actuator to control the opening and closing speed of the flap in conjunction with the number of revolutions of the.

이하 본 발명의 실시예를 첨부된 예시도면을 참조로 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명은 도면에 도시된 바와 같이, 엔진의 흡기 매니폴드에는 각 기통별로 개별적으로 설치된 런너(10)가 다수로 구비되고, 상기 각 기통별 런너(10)에는 외기의 유동경로에 대한 개폐를 조절하는 플랩(12)이 개별적으로 설치되며, 상기 각 기통별 런너(10)에 설치된 플랩(12)에는 이의 개폐동작을 조절하는 액츄에이터(14)가 개별적으로 구비된다.As shown in the drawing, the engine intake manifold is provided with a plurality of runners 10 installed separately for each cylinder, the runner 10 for each cylinder to control the opening and closing of the flow path of the outside air The flap 12 to be installed separately, the flap 12 provided in the runner 10 for each cylinder is provided with an actuator 14 for adjusting its opening and closing operation.

이 경우, 상기 액츄에이터(14)는 서보모터와 같이 회전각도 및 회전속도의 제어가 가능한 구동기, 예컨대 머니퓰레이터(manipulator)로 채택됨이 바람직하다.In this case, the actuator 14 is preferably adopted as a driver capable of controlling the rotation angle and the rotation speed, such as a servo motor, for example, a manipulator.

상기 액츄에이터(14)는 제어부(16)로부터 출력되는 제어신호에 의해 그 작동 이 이루어지는 바, 상기 제어부(16)는 상기 각 기통별 실린더의 흡기행정 마다 해당 기통별 런너(10)에 설치된 상기 플랩(12)을 선회시켜 해당 런너(10)가 개방되도록 상기 액츄에이터(14)에 작동신호를 출력하게 된다.The actuator 14 is operated by a control signal output from the control unit 16, the control unit 16 is the flap (installed in the runner 10 for each cylinder for each intake stroke of the cylinder for each cylinder) By turning 12), the operation signal is output to the actuator 14 so that the corresponding runner 10 is opened.

상기 플랩(12)은 상기 각 기통별 런너(10)에 회전축(14a)을 매개로 선회가능하게 설치되고, 상기 회전축(14a)은 상기 액츄에이터(14)의 구동에 따라 회전되도록 결합된다.The flap 12 is rotatably installed on the runner 10 for each cylinder via a rotation shaft 14a, and the rotation shaft 14a is coupled to rotate according to the driving of the actuator 14.

상기 제어부(16)는 흡기측 캠 샤프트 각도검출센서(18)로부터 상기 각 기통별 실린더에 대한 흡기행정을 검출하여, 해당 실린더의 흡기행정시 해당 런너(10)에 설치된 플랩(12)을 개방시켜 연소실내로 외기의 유입을 도모하게 된다.The control unit 16 detects the intake stroke of the cylinder for each cylinder from the intake side camshaft angle detection sensor 18, and opens the flap 12 provided in the runner 10 during the intake stroke of the cylinder. The inflow of outside air into the combustion chamber is aimed at.

이때, 상기 제어부(16)는 엔진 회전수 검출센서(20)로부터 엔진의 회전수를 검출하여, 상기 플랩(12)의 개폐속도를 엔진의 회전수에 연동하여 가변적으로 제어하게 된다.At this time, the controller 16 detects the engine speed from the engine speed sensor 20, and variably controls the opening and closing speed of the flap 12 in conjunction with the engine speed.

따라서, 본 발명은 각 기통별 흡입행정에 국한되어 런너(10)에 설치된 플랩(12)의 개방이 이루어지고, 이를 통해 해당 연소실내로 외기의 유입이 가능하게 되므로, 기존의 일체형 플랩에 비해 외기의 유동경로상에서 난류의 발생 면적이 크게 감소될 수 있게 되고, 이에 따라 발생되는 기류성 이음의 음압 크기(sound pressure level)가 작아지게 된다.Therefore, the present invention is limited to the intake stroke for each cylinder is made to open the flap 12 installed in the runner 10, through which the inlet air can be introduced into the combustion chamber, the outside air compared to the existing integrated flap The area of occurrence of turbulence on the flow path of can be greatly reduced, resulting in a small sound pressure level of the air flow joint.

아울러, 본 발명은 흡기의 유입시 발생되는 기류성 이음(異音)의 음압 크기가 작기 때문에 플라스틱재 흡기 매니폴드의 채택시에도 이를 통해 외부로 방사되는 소음 문제를 해소할 수 있게 된다.In addition, the present invention can solve the problem of noise emitted to the outside through the adoption of a plastic intake manifold because the size of the sound pressure of the air flow joint (異 音) generated when the intake of air is small.

한편, 통상의 소음 발생의 과정을 살펴보면, 음원-전달계-방사계로 구분되는 데, 본 발명에서는 음원에 해당하는 각 기통별 런너(10)에서 발생되는 기류성 이음의 크기를 최소화하여 흡기 소음의 음질을 개선하고, 이로부터 엔진의 성능 손실은 최소화하면서 NVH 성능의 개선을 보장할 수 있게 된다.On the other hand, when looking at the process of generating a normal noise, it is divided into a sound source-transmitter-radiation system, in the present invention by minimizing the size of the air flow joint generated in the runner 10 for each cylinder corresponding to the sound source sound quality of intake noise In this way, it is possible to guarantee an improvement in NVH performance while minimizing engine performance loss.

이상 설명한 바와 같이 본 발명에 따른 엔진의 가변 흡기장치에 의하면, 각 기통별 런너에 개별적으로 플랩을 설치하고, 엔진의 회전수와 각 기통별 흡입행정에 연동하여 각 플랩의 개폐조절을 함과 더불어 개폐시 플랩의 개폐속도가 엔진의 회전수와 연동될 수 있도록 함으로써, 각 기통별 런너를 통해 연소실내로 유입되는 공기의 유동으로부터 발생되는 기류성 이음의 발생 정도를 크게 줄일 수 있게 된다.As described above, according to the variable intake apparatus of the engine according to the present invention, the flaps are separately provided to the runners for each cylinder, and the opening and closing control of each flap is performed in conjunction with the engine rotation speed and the intake stroke for each cylinder. By opening and closing the flap of the flap can be linked to the number of revolutions of the engine during opening and closing, it is possible to greatly reduce the generation of airflow joints generated from the flow of air flowing into the combustion chamber through the runner for each cylinder.

Claims (4)

흡기 매니폴드의 각 기통별 런너에 개별적으로 설치된 플랩과; Flaps individually installed in each cylinder runner of the intake manifold; 상기 플랩을 선회시켜 상기 각 기통별 런너의 개폐를 독립적으로 조절하는 액츄에이터 및; An actuator for turning the flap to independently control opening and closing of the runner for each cylinder; 상기 각 기통별 실린더의 흡기행정 마다 해당 기통별 런너에 설치된 상기 플랩을 선회시켜 해당 런너가 개방되도록 상기 액츄에이터에 작동신호를 출력하는 제어부를 포함하여 구성되는 엔진의 가변 흡기장치.And a control unit for outputting an operation signal to the actuator so that the runner is opened by turning the flap provided in the cylinder-specific runner for each intake stroke of the cylinder for each cylinder. 청구항 1에 있어서, The method according to claim 1, 상기 플랩은 상기 각 기통별 런너에 회전축을 매개로 선회가능하게 설치되고, 상기 회전축은 상기 액츄에이터의 구동에 따라 회전되도록 결합된 것을 특징으로 하는 엔진의 가변 흡기장치.The flap is pivotally installed on the runner for each cylinder via a rotation shaft, and the rotation shaft is coupled to rotate in accordance with the drive of the actuator, the variable intake apparatus of the engine. 청구항 1에 있어서, The method according to claim 1, 상기 제어부는 흡기측 캠 샤프트 각도검출센서로부터 상기 각 기통별 실린더에 대한 흡기행정을 검출하도록 구성된 것을 특징으로 하는 엔진의 가변 흡기장치.And the control unit is configured to detect an intake stroke of the cylinder for each cylinder from the intake side camshaft angle detection sensor. 청구항 1 내지 청구항 3중 어느 하나의 항에 있어서, The method according to any one of claims 1 to 3, 상기 제어부는 엔진 회전수 검출센서로부터 엔진의 회전수를 검출하여 상기 플랩의 개폐속도를 가변적으로 제어하는 것을 특징으로 하는 엔진의 가변 흡기장치.The control unit detects the rotational speed of the engine from the engine speed detection sensor to variably control the opening and closing speed of the flap.
KR1020060127072A 2006-12-13 2006-12-13 Variable intake system in an engine KR20080054610A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101834274B1 (en) * 2016-12-26 2018-03-05 주식회사 현대케피코 Intake manifold for vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101834274B1 (en) * 2016-12-26 2018-03-05 주식회사 현대케피코 Intake manifold for vehicle

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