KR100204777B1 - Air intake duct of engine in a car - Google Patents

Air intake duct of engine in a car Download PDF

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Publication number
KR100204777B1
KR100204777B1 KR1019970012358A KR19970012358A KR100204777B1 KR 100204777 B1 KR100204777 B1 KR 100204777B1 KR 1019970012358 A KR1019970012358 A KR 1019970012358A KR 19970012358 A KR19970012358 A KR 19970012358A KR 100204777 B1 KR100204777 B1 KR 100204777B1
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South Korea
Prior art keywords
duct
engine
air
intake
speed
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KR1019970012358A
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Korean (ko)
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KR19980075935A (en
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조청용
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류정열
기아자동차주식회사
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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
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • 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
    • F02M35/10078—Connections of intake systems to the engine
    • F02M35/10085—Connections of intake systems to the engine having a connecting piece, e.g. a flange, between the engine and the air intake being foreseen with a throttle valve, fuel injector, mixture ducts or the like
    • 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
    • F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles

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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

본 발명은 자동차용 엔진의 흡기덕트에 관한 것으로, 엔진의 연소실로 공급되는 공기는 덕트의 구경을 넓히면 공기량이 많게 되어 엔진의 동력성능은 향상되나 소음은 증가하게 되고, 덕트의 흡기구경을 줄이게 되며 차량의 소음이 줄어드는 반면에 동력성능은 저하되기 때문에, 엔진의 설계시 덕트의 흡기구경은 동력을 증가시키고 동시에 소음의 저감을 만족시키는 최적의 상태를 이룰 수 없었다.The present invention relates to an intake duct of an automotive engine, and the air supplied to the combustion chamber of the engine increases the air volume when the diameter of the duct is widened, thereby improving the power performance of the engine but increasing the noise and reducing the intake diameter of the duct. Since the noise of the vehicle is reduced while the power performance is reduced, the inlet diameter of the duct in the design of the engine was unable to achieve the optimum state to increase the power and at the same time to reduce the noise.

이에, 본 발명은 첨부된 도면에서와 같이 엔진속도의 증감에 따라 흡입공기의 양이 조절될 수 있도록 에어클리너(10)에서 배출되는 덕트가 고속용 덕트(18)와 중저속용 덕트(20)로 양분되고, 분할된 덕트(18,20)가 스로틀챔버(12) 입구에서 봉합되며, 상기 양분된 덕트(18,20)에는 에어플로어미터(22)가 장착되고, 또한 고속용 덕트(18)의 입구에는 전자제어장치(16)의 통제하에 액추에이터(24)에 의해서 개폐되는 밸브(26)가 장착된 것이다.Accordingly, the present invention is a duct discharged from the air cleaner 10 to the high-speed duct 18 and the medium-low speed duct 20 so that the amount of intake air can be adjusted according to the increase or decrease of the engine speed as shown in the accompanying drawings. The divided and divided ducts 18 and 20 are sealed at the inlet of the throttle chamber 12, and the divided ducts 18 and 20 are equipped with an air flow meter 22, and the high speed duct 18 The inlet is equipped with a valve 26 which is opened and closed by the actuator 24 under the control of the electronic controller 16.

따라서, 본 발명은 엔진의 부하가 과도한 공기의 유입을 요구할 때 고속용 덕트가 공기를 공급하여 주고, 평상시와 같은 중저속의 상태에서는 중저속용 덕트에서 공기의 유입이 이루어져 엔진의 부하에 따른 동력성능이 증가됨은 물론 그에따른 흡기계통의 소음이 저감되는 효과가 있다Therefore, the present invention provides a high-speed duct supply air when the load of the engine requires excessive inflow of air, the power performance according to the load of the engine is made by the inflow of air in the medium-low speed duct in the medium-low speed state as usual In addition, the noise of the intake pipe is reduced as well.

Description

자동차용 엔진의 흡기덕트Intake duct of automobile engine

본 발명은 자동차용 엔진의 흡기덕트에 관한 것으로, 더욱 상세하게는 자동차용 엔진의 속도가 증가되고 감속됨에 따라 흡입공기의 양을 조절하여 흡기구경에서 발생하는 소음을 저감시키고 엔진의 동력성능을 향상시켜 주는 자동차용 엔진의 흡기덕트에 관한 것이다.The present invention relates to an intake duct of an automobile engine, and more particularly, by adjusting the amount of intake air as the speed of the automobile engine increases and decreases, thereby reducing noise generated in the intake diameter and improving the power performance of the engine. It relates to an intake duct of an engine for a car.

일반적으로 자동차의 엔진은 동력을 발생시키는 중요한 부분으로, 연소실에서 발생한 열에너지를 기계적 일로 바꾸는 기관이며 피스톤의 직선운동을 회전운동으로 바꾸기 위하여 피스톤과 크랭크축을 커넥팅로드로 연결한 기구로 이루어졌으며, 혼합기를 흡입하고 압축한 다음 점화 연소시켜 연소가스를 배출하는 흡입, 압축, 폭발, 배기의 4단계를 반복하여 동력을 발생시킨다.In general, the engine of an automobile is an important part of generating power, an engine that converts thermal energy generated from a combustion chamber into mechanical work, and consists of a mechanism in which a piston and a crankshaft are connected by connecting rods to convert a linear movement of a piston into a rotational movement. Suction, compression, ignition and combustion to generate power by repeating four stages of suction, compression, explosion, and exhaust.

상기와 같은 동력행정을 하기 위하여 엔진은 도 1 에 도시된 바와 같은 전자제어 연료분사장치로 구성으로 되어있으며, 이는 엔진의 연소실로 공기를 공급하는 흡기계통과 연료를 공급하는 연료계통 및 엔진의 운전상태에 따라 알맞은 연료 공급량을 결정하고 제어하는 전자제어계통으로 구분되며, 이하 이를 간단히 설명하면 다음과 같다.In order to perform the above power administration, the engine is composed of an electronically controlled fuel injection device as shown in FIG. 1, which is an intake system for supplying air to the combustion chamber of the engine, a fuel system for supplying fuel, and an operation of the engine. It is divided into an electronic control system that determines and controls the appropriate fuel supply amount according to the state.

상기 연료계통은 연료가 저장되어 있는 연료탱크(1), 연료를 압송하는 연료펌프(2), 연료의 맥동을 완화시켜 주는 연료댐퍼(3), 연료의 미세한 먼지나 수분을 여과시키는 연료여과기, 연료송출파이프 및 엔진의 각 실린더내로 무화상태의 연료를 분사시키는 인젝터(4)로 구성되어 엔진의 연소실로 연료를 공급하여 준다.The fuel system includes a fuel tank (1) in which fuel is stored, a fuel pump (2) for pumping fuel, a fuel damper (3) for mitigating pulsation of fuel, a fuel filter for filtering fine dust and water in the fuel, It consists of a fuel delivery pipe and an injector 4 for injecting atomized fuel into each cylinder of the engine to supply fuel to the combustion chamber of the engine.

흡기계통은 기본적으로 엔진의 연소에 필요한 공기를 공급하는 계통으로, 에어클리너(5)를 통과한 공기는 공기의 흐름을 검출하는 에어플로어미터(6)를 지나 스로틀밸브(7)의 열림정도에 따른 공기량이 흡기매니폴드를 지나 연소실로 흡입되는데, 엔진의 공회전시 스로틀밸브(7)가 완전히 닫혀 있을 때에도 바이패스통로를 통하여 일정량의 공기가 연소실내로 공급한다.The intake cylinder is basically a system for supplying the air necessary for combustion of the engine, and the air passing through the air cleaner 5 passes through the air flow meter 6 which detects the flow of air, and thus the degree of opening of the throttle valve 7 The amount of air is sucked into the combustion chamber after passing through the intake manifold. Even when the throttle valve 7 is completely closed when the engine is idle, a certain amount of air is supplied into the combustion chamber through the bypass passage.

또한, 전자제어계통은 각종 센서로부터 엔진 회전수, 흡입공기량, 시동신호, 스로틀밸브의 열림정도, 냉각수 온도, 흡기온도 등을 감지하여 전기신호를 전자제어장치(ECU,8)로 송출하고, 전자제어장치(8)는 최적의 연료분사시기를 결정하여 인젝터(4)가 최적량의 연료를 분사시키며, 따라서 연료계통에서 공급되는 연료와 흡기계통에서 공급되는 공기가 연소실내로 혼합되어 엔진의 출력이 이루어지는 것이다.In addition, the electronic control system detects the engine speed, intake air amount, start signal, opening degree of the throttle valve, cooling water temperature, intake temperature, etc. from various sensors, and transmits an electrical signal to the electronic control unit (ECU, 8). The control device 8 determines the optimum fuel injection timing so that the injector 4 injects the optimum amount of fuel. Therefore, the fuel supplied from the fuel system and the air supplied from the intake system are mixed into the combustion chamber to output the engine. This is done.

상술된 바와 같이 종래의 흡기계통은 에어클리너(5)에서 먼지와 수분이 제거된 공기가 에어플로어미터(6)를 지나 스로틀밸브(7)까지 덕트(9)내로 송출되며, 스로틀밸브(7)의 개도량에 따라 일정량의 공기가 엔진의 연소실로 공급되었다.As described above, in the conventional intake tube, air from which dust and moisture are removed from the air cleaner 5 is passed through the air flow meter 6 to the throttle valve 7 and into the duct 9, and the throttle valve 7 A certain amount of air was supplied to the combustion chamber of the engine according to the opening amount of the engine.

그러나, 엔진의 연소실로 공급되는 공기는 차량의 흡기구조를 볼 때 덕트(9)의 구경을 넓히면 공기량이 많게 되어 엔진의 동력성능은 향상되나 소음은 증가하게 되고, 덕트(9)의 흡기구경을 줄이게 되며 차량의 소음이 줄어드는 반면에 동력성능은 저하되는 문제점이 있었다.However, when the air supplied to the combustion chamber of the engine sees the intake structure of the vehicle, when the diameter of the duct 9 is widened, the air volume increases, so that the power performance of the engine is improved, but the noise increases, and the intake diameter of the duct 9 is increased. While reducing the noise of the vehicle while reducing the power performance there was a problem.

따라서, 차량은 엔진을 중저속 상태에서 일반적으로 많이 사용되므로, 엔진의 설계시 덕트(9)의 흡기구경은 동력의 증가시키고 소음의 감소를 동시에 만족할 수 있는 최적의 상태를 이룰 수 없었다.Therefore, since the vehicle is generally used in a medium low speed state, the intake diameter of the duct 9 in the design of the engine was not able to achieve the optimum state to satisfy the increase of power and the reduction of noise at the same time.

이에 본 발명은 상기한 종래 기술이 지닌 문제점을 해소시키기 위하여 안출된 것으로, 자동차용 엔진의 속도증가와 감속에 따라 흡입공기의 양이 조절되어 덕트의 흡기구경에서 발생하는 소음이 줄어들고 엔진의 동력성능이 향상되는 자동차용 엔진의 흡기덕트를 제공하는데 발명의 목적이 있다.Accordingly, the present invention has been made to solve the problems of the prior art, the amount of intake air is adjusted according to the increase and deceleration of the engine for automobiles to reduce the noise generated in the inlet diameter of the duct and power performance of the engine An object of the present invention is to provide an intake duct of an automotive engine that is improved.

상기와 같은 목적을 실현하기 위한 본 발명은 엔진 속도의 증감에 따라 흡입공기의 양이 조절될 수 있도록 에어클리너에서 배출되는 덕트를 양측으로 분할시키고, 분할된 덕트를 스로틀챔버의 입구에서 봉합시키며, 상기 분할된 덕트의 양측내에 에어플로어미터를 장착시키고, 덕트의 일측에만 액추에이터에 의해서 개폐되는 밸브가 장착된 것이다.The present invention for realizing the above object is to divide the duct discharged from the air cleaner to both sides so that the amount of intake air can be adjusted according to the increase or decrease of the engine speed, the divided duct is sealed at the inlet of the throttle chamber, Air flowmeters are mounted on both sides of the divided duct, and only one side of the duct is equipped with a valve that is opened and closed by an actuator.

따라서, 본 발명은 엔진의 흡기구경을 중저속일때와 고속일 때를 구분하여 공기의 유입이 이루어질 수 있도록 에어클리너에서 배출되는 덕트를 양분한 것으로, 엔진의 부하가 중저속시에는 일측으로 개방된 덕트로 흡입공기가 스로틀챔버로 유입되고, 엔진의 부하가 고속시에는 액추에이터의 작동으로 밸브가 오픈되어 많은량의 공기가 스로틀챔버로 유입되는 것이다.Therefore, the present invention divides the inlet diameter of the engine into a duct discharged from the air cleaner so that the inflow of air can be made by distinguishing the medium and low speeds, and the engine load is opened to one side at the low and medium speeds. Intake air flows into the throttle chamber through the duct, and when the load of the engine is high speed, the valve is opened by the operation of the actuator so that a large amount of air flows into the throttle chamber.

도 1 은 종래 엔진의 전자제어 분사장치의 구성도,1 is a configuration diagram of an electronically controlled injection device of a conventional engine,

도 2 는 본 발명에 따른 엔진의 흡기계통을 나타낸 계통도이다.2 is a system diagram showing an intake cylinder of an engine according to the present invention.

- 도면의 주요부분에 대한 부호의 설명 --Explanation of symbols for the main parts of the drawings-

10 - 에어클리너, 12 - 스로틀챔버,10-Air Cleaner, 12-Throttle Chamber,

14 - 스로틀밸브, 16 - 전자제어장치(ECU),14-throttle valve, 16-electronic control unit (ECU),

18 - 고속용 덕트, 20 - 중저속용 덕트,18-high speed duct, 20-medium and low speed duct,

22 - 에어플로어미터, 24 - 액추에이터,22-air floor meter, 24-actuator,

26 - 밸브.26-valve.

이하 본 발명을 첨부된 예시도면에 의거하여 구성과 작용을 상세히 설명하면 다음과 같다.Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

본 발명은 엔진속도의 증감에 따라 흡입공기의 양이 조절될 수 있도록 에어클리너(10)에서 배출되는 덕트가 고속용 덕트(18)와 중저속용 덕트(20)로 양분되고, 분할된 덕트(18,20)가 스로틀챔버(12) 입구에서 봉합되며, 상기 양분된 덕트(18,20)에는 에어플로어미터(22)가 장착되고, 또한 고속용 덕트(18)의 입구에는 전자제어장치(16)의 통제하에 액추에이터(24)에 의해서 개폐되는 밸브(26)가 장착된 자동차용 엔진의 흡기덕트이다.According to the present invention, the duct discharged from the air cleaner 10 is divided into a high speed duct 18 and a medium and low speed duct 20 so that the amount of intake air can be adjusted according to the increase and decrease of the engine speed, and the divided duct 18 (20) is sealed at the inlet of the throttle chamber (12), the dividing duct (18, 20) is equipped with an air flow meter (22), and the electronic control device (16) at the inlet of the high speed duct (18). Is an intake duct of an automotive engine equipped with a valve 26 which is opened and closed by an actuator 24 under the control of.

예시도면 도 2 는 본 발명에 따른 엔진의 흡기계통을 나타낸 계통도로서, 상세한 구성은 후술되는 바와 같다.2 is a system diagram showing an intake cylinder of an engine according to the present invention, the detailed configuration of which will be described later.

에어클리너(10)의 배출구에서 양분된 고속용 덕트(18)와 중저속용 덕트(20)는 스로틀챔버(12)의 입구에서 합쳐지는 구조로 형성되고, 고속용 덕트(18)와 중저속용 덕트(20)의 입구에는 공기의 흐름으로 공기량을 검출하는 에어플로어미터(22)가 장착되며, 상기 고속용 덕트(18)의 입구경에는 공기의 흐름을 차단하는 밸브(26)가 설치되어 있다.The high speed duct 18 and the medium and low speed duct 20, which are bisected at the outlet of the air cleaner 10, are formed in a structure that is joined at the inlet of the throttle chamber 12, and the high speed duct 18 and the medium and low speed duct ( An air flow meter 22 is installed at the inlet of the air to detect the amount of air by the flow of air, and a valve 26 is provided at the inlet diameter of the high speed duct 18 to block the flow of air.

상기, 에어플로어미터(22)와 고속용 덕트(18)의 입구에 장착된 밸브(26) 및 스로틀챔버(12)에 설치된 스로틀밸브(14)는 모두 전자제어장치(16)의 통제하에 작동을 할 수 있도록 연결되어 있다.The valve 26 mounted at the inlet of the air flow meter 22 and the high speed duct 18 and the throttle valve 14 installed at the throttle chamber 12 are all operated under the control of the electronic controller 16. It is connected to do so.

또한, 전자제어장치(16)의 전기적 신호에 따라 개폐되는 밸브(26)는 액추에이터(24)에 설치되어 있는 모터의 회전에 의해서 공기를 유입시킬 수 있는 위치를 조절하게 된다.In addition, the valve 26, which is opened and closed according to the electrical signal of the electronic controller 16, adjusts the position at which air can be introduced by the rotation of the motor installed in the actuator 24.

상기와 같은 구성으로 이루어진 엔진의 흡기계통은 엔진의 상태가 공회전시나 중저속시에는 고속용 덕트(18)의 밸브(26)가 전자제어장치(16)의 통제하에 닫히게 되고, 중저속용 덕트(20)로 에어클리너(10)에서 공급되는 공기가 흐르게 되며, 이때 스로틀챔버(12)의 스로틀밸브(14)의 개도량에 따라 엔진의 연소실로 적당량의 공기가 유입되는 것이다.In the intake cylinder of the engine having the above-described configuration, when the engine is idling or at low to medium speed, the valve 26 of the high speed duct 18 is closed under the control of the electronic controller 16, and the medium to low speed duct 20 Air supplied from the air cleaner 10 flows into the air cleaner 10, and an appropriate amount of air flows into the combustion chamber of the engine according to the opening amount of the throttle valve 14 of the throttle chamber 12.

또한, 엔진의 부하가 고속상태에서는 중저속용 덕트(20)로 유입되는 공기와 더불어 고속용 덕트(18)의 밸브(26)가 엔진의 속도에 상응하는 만큼 열려서 공기가 스로틀챔버(12)로 유입하게 된다In addition, when the load of the engine is at a high speed, the valve 26 of the high speed duct 18 is opened to correspond to the speed of the engine as well as the air flowing into the medium and low speed duct 20 so that the air flows into the throttle chamber 12. Will be

따라서, 엔진의 연소실에는 스로틀밸브(14)의 개도와 합께 많은 양의 공기가 유입되어 엔진의 동력성능을 높이게 되는 것이다.Therefore, a large amount of air flows into the combustion chamber of the engine together with the opening of the throttle valve 14 to increase the power performance of the engine.

즉, 본 발명의 엔진의 흡기덕트는 차량의 흡기구경이 엔진의 동력성능에 따라 고속일때는 많은 양의 공기가 유입되게 하고, 중속이나 저속일때는 적은 양의 공기를 유입 할 수 있도록 하여 엔진의 동력성능을 높임과 더불어 흡기덕트내의 소음을 저감시킨 것이다.That is, the intake duct of the engine of the present invention allows a large amount of air to be introduced when the intake diameter of the vehicle is high speed according to the power performance of the engine, and to allow a small amount of air to be introduced at medium or low speeds. In addition to increasing power performance, noise in the intake duct is reduced.

상술된 바와 같이 본 발명은 엔진의 흡기덕트를 중저속용 덕트와 고속용 덕트로 분할하고 각 덕트에 에어플로어미터를 장착하며 고속용 덕트의입구에 전자제어장치에 의해서 제어되는 밸브를 설치한 것으로, 본 구조는 엔진의 부하가 과도한 공기의 유입을 요구할 때 고속용 덕트가 공기를 공급하여 주고, 평상시와 같은 중저 속의 상태에서는 중저속용 덕트에서 공기의 유입이 이루어져 엔진의 부하에 따른 동력성능이 증가됨은 물론 그에따른 흡기계통의 소음이 저감되는 효과가 있다.As described above, the present invention divides the intake duct of the engine into a low to medium speed duct and a high speed duct, installs an air flow meter in each duct, and installs a valve controlled by an electronic controller at the inlet of the high speed duct. In this structure, when the engine load requires excessive air inflow, the high-speed duct supplies air, and in the mid-low state as usual, the air flows in the medium-low speed duct to increase the power performance according to the load of the engine. Of course, there is an effect of reducing the noise of the intake pipe accordingly.

Claims (1)

엔진속도의 증감에 따라 흡입공기의 양이 조절될 수 있도록 에어클리너(10)에서 배출되는 덕트가 고속용 덕트(18)와 중저속용 덕트(20)로 양분되고, 분할된 덕트(18,20)가 스로틀챔버(12) 입구에서 봉합되며, 상기 양분된 덕트(18,20)에는 에어플로어미터(22)가 장착되고, 또한 고속용 덕트(18)의 입구에는 전자제어장치(16)의 통제하에 액추에이터(24)에 의해서 개폐되는 밸브(26)가 장착된 것을 특징으로 하는 자동차용 엔진의 흡기덕트.The duct discharged from the air cleaner 10 is divided into the high speed duct 18 and the low and medium speed duct 20 so that the amount of intake air can be adjusted according to the increase and decrease of the engine speed, and the divided ducts 18 and 20 are provided. Is sealed at the inlet of the throttle chamber 12, and the divided ducts 18 and 20 are equipped with an air flow meter 22, and at the inlet of the high speed duct 18 under the control of the electronic control unit 16. Intake duct of an automotive engine, characterized in that the valve 26 is opened and closed by the actuator (24).
KR1019970012358A 1997-04-03 1997-04-03 Air intake duct of engine in a car KR100204777B1 (en)

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