KR100304277B1 - Two step throttle valve of diesel engine - Google Patents

Two step throttle valve of diesel engine Download PDF

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Publication number
KR100304277B1
KR100304277B1 KR1019970079539A KR19970079539A KR100304277B1 KR 100304277 B1 KR100304277 B1 KR 100304277B1 KR 1019970079539 A KR1019970079539 A KR 1019970079539A KR 19970079539 A KR19970079539 A KR 19970079539A KR 100304277 B1 KR100304277 B1 KR 100304277B1
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South Korea
Prior art keywords
throttle valve
small
diesel engine
stage
intake manifold
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KR1019970079539A
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Korean (ko)
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KR19990059340A (en
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정하영
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이계안
현대자동차주식회사
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Priority to KR1019970079539A priority Critical patent/KR100304277B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1065—Mechanical control linkage between an actuator and the flap, e.g. including levers, gears, springs, clutches, limit stops of the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/0272—Two or more throttles disposed in series

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

PURPOSE: A two step throttle valve of a diesel engine is provided for more accurate control of an air amount, thereby reducing smoke. CONSTITUTION: In a diesel engine having an intake manifold(40) supplying air to a cylinder(50), a separation wall(13) is formed dividing a big diameter passage(12) and a small diameter passage(14) in the intake manifold(40). A large scale throttle valve(20) and a small scale throttle valve(25) are installed in the inner wall of the intake manifold(40) rotatably to control air amount. A 2 step diaphragm(30) is connected with the large and small scale throttle valve(20, 25) to control rotation of the large and small scale throttle valve(20, 25).

Description

디젤엔진의 2단 드로틀밸브2-stage throttle valve of diesel engine

본 발명은 디젤엔진의 드로틀밸브에 관한 것으로, 특히, 저속영역에서는 소형드로틀밸브만을 개방하여 공기를 공급하고, 고속영역에서는 소형 및 대형드로틀밸브를 모드 개방하여 공기를 흡입하므로 보다 정확한 공기량 조절을 가능하게 하여 완전연소를 도모하고, 매연을 저감하도록 하는 디젤엔진의 2단 드로틀밸브에 관한 것이다.The present invention relates to a throttle valve of a diesel engine, and in particular, in the low speed region, only the small throttle valve is opened to supply air, and in the high speed region, the small and large throttle valves open the mode to inhale air, thereby enabling more accurate air volume control. The present invention relates to a two-stage throttle valve of a diesel engine that promotes complete combustion and reduces smoke.

일반적으로, 흡기매니폴드는 디젤엔진으로 공급되는 연료를 다수개의 실린더로 안내하기 위하여 기다란 관로와 같이 생긴 파이프를 서로 붙여서 형성시킨 일종의 연료이동을 보조하여 주는 부재로서, 기화기에서 연료와 공기를 일정한 비율로 혼합시킨 후에 이 흡기매니폴드를 통하여 엔진의 실린더로 혼합기가 유입되는 것이다.In general, the intake manifold is a member that assists in the movement of fuel formed by attaching pipes shaped like long pipes to guide fuel supplied to a diesel engine to a plurality of cylinders. After mixing, the mixer enters the cylinder of the engine through the intake manifold.

이와 같이, 흡기매니폴드에는 각각의 관로마다 모터에 의하여 작동하고, 엔진의 아이들링 구동시에 흡기매니폴드의 일부분을 차단하여 불완전 폭발을 방지하여 매연을 저감도록 하는 매니폴드 드로틀밸브(M.T.V; Manifold Throttle Valve)가 장착되어 있다.As such, a manifold throttle valve (MTV) is operated by a motor for each duct in the intake manifold, and blocks a part of the intake manifold during idling operation of the engine to prevent incomplete explosion and reduce smoke. ) Is installed.

제1도는 종래의 일반적인 흡기계통의 요부를 개략적으로 보인 도면이고, 제2도는 종래의 드로틀밸브가 동작되는 상태를 보인 도면으로서, 미도시된 에어클리너에서 공기를 청정시킨 후에 다이아프램실(3)에서 조절을 받는 드로틀밸브(2)가 축을 중심으로 회전하면서 공기 유입량을 조절하여 흡기매니폴드(4)를 통하여 엔진의 실린더(5)에 공기가 유입됨과 동시에 인젝터에서 연료를 공급하여 압축 착화로 연료를 폭발시키면서 자동차를 구동시키는 동력으로 사용하게 되는 것이다.FIG. 1 is a view schematically showing a main part of a conventional intake tube, and FIG. 2 is a view showing a state in which a conventional throttle valve is operated. After cleaning air in an air cleaner not shown, the diaphragm chamber 3 is shown. The throttle valve (2), which is controlled at It will be used as a power to drive the car while exploding.

이때, 제2도에 도시된 바와 같이, 흡기매니폴드(4)에서 드로틀밸브(2)를 수직으로 개방하는 량을 크게 하면, 공기의 유입량이 커지게 되고, 드로틀밸브(2)를 회전시키게 되면, 흡기매니폴드(4)의 내벽면과 일정한 갭(a)이 2.0mm 정도 발생되면서 공기의 유입량을 줄여주게 된다.At this time, as shown in FIG. 2, when the amount of opening the throttle valve 2 vertically in the intake manifold 4 is increased, the inflow of air increases, and when the throttle valve 2 is rotated. The inner wall surface of the intake manifold 4 and a predetermined gap (a) are generated about 2.0 mm to reduce the inflow of air.

그런데, 종래의 방식은 드로틀밸브캡(a)을 조절하기 위하여 두 개의 볼트를 사용하여 조절하게 되는 것으로서, 이 드로틀밸브(2)를 장시간에 걸쳐 사용하게 되면, 볼트가 풀어지게 되어 드로틀밸브(2)의 작동이 불완전하게 되어 공기의 유입량이 커지게 되고, 그로 인하여 자동차의 엔진에서 매연이 심하게 발생되는 문제점을 지니고 있었다.By the way, the conventional method is to adjust by using two bolts to adjust the throttle valve cap (a), when the throttle valve (2) is used for a long time, the bolt is released and the throttle valve (2) ), The operation of the incomplete to increase the air inflow, thereby causing a problem that the smoke is badly generated in the engine of the car.

본 발명은 이러한 점을 감안하여 안출한 것으로서, 흡기매니폴드의 적소에 대형관로와 소형관로로 구분 짓는 격리막을 형성하여 이 대형관로에는 크기가 큰 대형드로틀밸브를 장착하고, 소형관로에는 소형드로틀밸브를 장착하여 저속영역에서는 소형드로틀밸브만을 개방하여 공기를 공급하고, 고속영역에서는 소형 및 대형 드로틀밸브를 모두 개방하여 공기를 흡입하므로 보다 정확한 공기량 조절을 가능하게 하여 완전연소를 도모하고, 매연을 저감하도록 하는 것이 목적이다.The present invention has been made in view of the above-mentioned, forming an isolation membrane divided into a large pipeline and a small pipeline in place of the intake manifold, and the large pipeline is equipped with a large throttle valve and a small throttle valve in the small pipeline. In the low speed area, only the small throttle valve is opened to supply air, and in the high speed area, both the small and large throttle valve are opened to intake air, enabling more accurate air volume control to achieve complete combustion and reduce smoke. The purpose is to.

제1도는 종래의 일반적인 흡기계통의 요부를 개략적으로 보인 도면.1 is a schematic view showing the main parts of a conventional general intake tube.

제2도는 종래의 드로틀밸브가 동작되는 상태를 보인 도면.2 is a view showing a state in which a conventional throttle valve is operated.

제3도는 본 발명에 따른 2단 드로틀밸브를 갖는 흡기계통의 구성을 개략적으로 보인 도면.3 is a view schematically showing the configuration of an intake cylinder having a two-stage throttle valve according to the present invention.

제4도는 본 발명에 따른 2단 드로틀밸브의 작동 상태를 보인 도면.4 is a view showing an operating state of the two-stage throttle valve according to the present invention.

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

12 : 대형관로 13 : 격리막12: large pipeline 13: separator

14 : 소형관로 20 : 대형드로틀밸브14: small pipe 20: large throttle valve

25 : 소형드로틀밸브 30 : 2단 다이아프램실25: small throttle valve 30: two-stage diaphragm seal

32 : 제1유입로 34 : 제2유입로32: first inflow path 34: second inflow path

36 : 제1구동라인 38 : 제2구동라인36: first driving line 38: second driving line

40 : 흡기매니폴드 50 : 실린더40: intake manifold 50: cylinder

이러한 목적은 흡기매니폴드의 내부에 직경이 큰 대형관로와 직경이 작은 소형관로로 구분하도록 형성된 격리막과, 상기 대형관로와 소형관로의 흡기매니폴드 내벽면에 회전 가능하게 설치되어 저속 및 고속시 공기유입량을 조절하는 대형 및 소형드로틀밸브와; 상기 대형 및 소형드로틀밸브에 제1, 제2구동라인을 통하여 연 결되고, 이 드로틀밸브의 회전량을 조절하도록 하는 2단 다이아프램으로 구성된 디젤엔진의 2단 드로틀밸브를 제공함으로써 달성된다.The purpose of this purpose is to separate the large inlet manifold and the small diameter conduit inside the intake manifold, and to be installed rotatably on the inner wall surface of the intake manifold of the large inlet duct and the small conduit. Large and small throttle valve for adjusting the flow rate; It is achieved by providing a two-stage throttle valve of a diesel engine, which is connected to the large and small throttle valves through first and second drive lines, and is composed of a two-stage diaphragm for adjusting the amount of rotation of the throttle valve.

이하, 첨부한 도면에 의거하여 본 발명의 구성에 대하여 상세히 설명한다.EMBODIMENT OF THE INVENTION Hereinafter, the structure of this invention is demonstrated in detail based on an accompanying drawing.

제3도 및 제4도에 도시된 바와 같이, 본 발명에 따른 디젤엔진의 2단 드로틀밸브의 구성은 실린더(50)내에 공기를 공급하는 흡기매니폴드(40)를 갖는 디젤엔진에서, 상기 흡기매니폴드(40)의 내부에 직경이 큰 대형관로(12)와 직경이 작은 소형 관로(14)로 구분하도록 형성된 격리막(13)과: 상기 대형관로(12)와 소형관로(14)의 흡기매니폴드(40) 내벽면에 회전 가능하게 설치되어 저속 및 고속시 공기유입량을 조절하는 대형 및 소형드로틀밸브(20)(25)와; 상기 대형 및 소형드로틀밸브(20)(25)에 제1, 제2구동라인(36)(38)을 통하여 연결되고, 이 드로틀밸브(20)(25)의 회전량을 조절하도록 하는 2단 다이아프램(30)으로 구성된다.As shown in FIG. 3 and FIG. 4, the configuration of the two-stage throttle valve of the diesel engine according to the present invention is a diesel engine having an intake manifold 40 for supplying air into the cylinder 50. Separation membrane 13 formed in the manifold 40 to be divided into a large diameter pipeline 12 and a small diameter pipeline 14 having a large diameter: an intake manifold of the large pipeline 12 and the small pipeline 14. A large and small throttle valve 20 and 25 rotatably installed on an inner wall surface of the fold 40 to control air inflow rates at low and high speeds; A two-stage diamond connected to the large and small throttle valves 20 and 25 through first and second drive lines 36 and 38, and adjusting the rotation amount of the throttle valves 20 and 25; It is composed of a pram 30.

그리고, 상기 소형드로틀밸브(25)는 저속시에 개방되고, 상기 대형드로틀밸(20)는 저속시에 차단되도록 구성된다.In addition, the small throttle valve 25 is opened at low speed, and the large throttle bell 20 is configured to be blocked at low speed.

또한, 상기 소형드로틀밸브(25)는 중, 고속시에 개방되고, 상기 대형드로틀밸브(20) 역시 중, 고속시에 개방되어 공기의 유입량을 조절하도록 구성된다.In addition, the small throttle valve 25 is opened at medium and high speeds, and the large throttle valve 20 is also opened at medium and high speeds, and configured to adjust the inflow of air.

한편, 상기 2단 다이아프램실(30)은 제1유입로(32)와 제2유입로(34)를 통하여 공급되는 바람직하게는 솔레노이드밸브에 의한 유압 혹은 공압에 의하여 작동되도록 구성된다.On the other hand, the two-stage diaphragm chamber 30 is configured to be operated by hydraulic or pneumatic pressure, preferably by a solenoid valve supplied through the first inlet 32 and the second inlet 34.

이하, 본 발명의 작용을 상세하게 살펴보도록 한다.Hereinafter, the operation of the present invention will be described in detail.

먼저, 본 발명의 사용 상태를 살펴보게 되면, 본 발명에 따른 흡기매니폴드(40)에 공기가 공급되는 경우 엔진이 1000rpm이하의 저속으로 진행하 는 경우에는 2단 다이아프램실(30)에서 제1유입로(32)에서는 유압 혹은 공압이 공급되지 않으므로 대형드로틀밸브(20)는 대형관로(12)를 차단시켜 공기의 공급을 중지시키고, 제2유입로(34)만을 통하여 압력이 전달되어 제2구동라인(38)을 통하여 소형드로틀밸브(25)를 소정의 각도 만큼 작동하여 공기의 공급을 조절하므로 실린 더(50)에 저속의 운행에만 필요한 소량의 공기만을 공급하게 된다.First, referring to the use state of the present invention, when air is supplied to the intake manifold 40 according to the present invention, when the engine proceeds at a low speed of 1000 rpm or less, the second stage diaphragm chamber 30 Since no hydraulic or pneumatic pressure is supplied from the first inflow path 32, the large throttle valve 20 interrupts the supply of air by blocking the large pipe 12, and the pressure is transmitted only through the second inflow path 34. Since the small throttle valve 25 is operated by a predetermined angle through the two driving lines 38 to control the supply of air, only a small amount of air necessary for low speed operation is supplied to the cylinder 50.

그리고, 엔진이 1000rpm이상으로 작동되는 경우에는 제1, 제2유입로(32)(34)로 공급되는 유압 혹은 공압에 의하여 제1, 제2구동라인(36)(38)을 통하여 압력이 가하여져서 대형 및 소형드로틀밸브(20)(25)를 모두 작동시켜 대형관로(12) 및 소형관로(14) 모두로 공기가 유입되면서 공기의 공급량을 조절하게 되는 것이다.When the engine is operated at 1000 rpm or more, pressure is applied through the first and second driving lines 36 and 38 by hydraulic pressure or pneumatic pressure supplied to the first and second inflow paths 32 and 34. The large and small throttle valves 20 and 25 are operated to adjust the supply amount of air while the air is introduced into both the large pipe line 12 and the small pipe line 14.

따라서, 상기한 바와 같이 본 발명에 따른 디젤엔진의 2단 드로틀밸브를 사용하게 되면, 흡기매니폴드의 적소에 대형관로와 소형관로로 구분 짓는 격리막을 형성하여 이 대형관로에는 크기가 큰 대형드로틀밸브를 장착하고, 소형관로에는 소형드로틀밸브를 장착하여 저속영역에서는 소형드로틀밸브만을 개방하여 공기를 공급하고, 고속영역에서는 소형 및 대형드로틀밸브를 모두 개방하여 공기를 흡입하므로 보다 정확한 공기량 조절을 가능하게 하여 완전연소를 도모하고, 매연을 저감하도록 하는 매우 유용하고 효과적인 발명인 것이다.Therefore, when the two-stage throttle valve of the diesel engine according to the present invention is used as described above, a large throttle valve having a large size is formed in the large pipeline by forming an isolation membrane which is divided into a large pipeline and a small pipeline in the intake manifold. The small throttle valve is installed in the small pipeline to supply air by opening only the small throttle valve in the low speed region, and inleting air by opening both the small and large throttle valve in the high speed region to enable more accurate air volume control. It is a very useful and effective invention to achieve complete combustion and reduce soot.

또한, 드로틀밸브에서 흡기매니폴드의 내벽면 사이에 형성되는 갭을 조절하는 2단볼트의 조절이 필요 없게 되어 제조시에 완전하게 봉인을 할 수 있으므로 볼트의 풀림을 인한 공기유입량의 변화를 방지하게 되는 잇점이 있다.In addition, it is not necessary to adjust the two-stage bolt to adjust the gap formed between the inner wall surface of the intake manifold in the throttle valve, so that the seal can be completely sealed during manufacture, thereby preventing the change of the air inflow amount due to loosening of the bolt. There is an advantage.

Claims (4)

실린더(50)내에 공기를 공급하는 흡기매니폴드(40)를 갖는 디젤엔진에 있어서, 상기 흡기매니폴드(40)의 내부에 직경이 큰 대형관로(12)와 직경이 작은 소형관로(14)로 구분하도록 형성된 격리막(13)과; 상기 대형관로(12)와 소형관로(14)의 흡기매니폴드(40) 내벽면에 회전 가능하게 설치되어 저속 및 고속시 공기유입량을 조절하는 대형 및 소형드로틀밸브(20) (25)와; 상기 대형 및 소형드로틀밸브(20)(25)에 제1, 제2구동라인(36)(38)을 통하여 연결되고, 이 드로틀밸브(20)(25)의 회전량을 조절하도록 하는 2단 다이아프램(30)으로 구성된 것을 특징으로 하는 디젤엔진의 2단 드로틀밸브.In a diesel engine having an intake manifold 40 for supplying air into the cylinder 50, the large inlet duct 12 and the small diameter duct 14 having a large diameter are formed inside the intake manifold 40. A separator 13 formed so as to distinguish; Large and small throttle valves 20 and 25 rotatably installed on the inner wall surface of the intake manifold 40 of the large pipe line 12 and the small pipe line 14 to control the air inflow rate at low and high speeds; A two-stage diamond connected to the large and small throttle valves 20 and 25 through first and second drive lines 36 and 38, and adjusting the rotation amount of the throttle valves 20 and 25; The two-stage throttle valve of the diesel engine, characterized in that consisting of a fram (30). 제1항에 있어서, 저속시에는 상기 2단 다이아프램(30)이 동작함에 따라 제2구동라인에 의해 상기 소형드로틀밸브(25)가 개방되고 제1구동라인에 의해 상기 대형드로틀밸브(20)가 차단되도록 된 것을 특징으로 하는 디젤엔진의 2단 드로틀밸브.The small throttle valve 25 is opened by a second driving line and the large throttle valve 20 is opened by a first driving line as the second stage diaphragm 30 operates at a low speed. The two-stage throttle valve of the diesel engine, characterized in that the cut off. 제1항에 있어서, 중, 고속시에는 상기 2단 다이아프램(30)이 동작함에 따라 상기 대형드로틀밸브(20)와 상기 소형드로틀밸브(25)가 각각 제1구동라인과 제2구동라인에 의해 개방되어 공기의 유입량을 조절하도록 된 것을 특징으로 하는 디젤엔진의 2단 드로틀밸브.According to claim 1, The large throttle valve (20) and the small throttle valve (25) to the first drive line and the second drive line as the two-stage diaphragm (30) operates at medium and high speeds, respectively. Opened by the two-stage throttle valve of the diesel engine, characterized in that to control the flow of air. 제1항에 있어서, 상기 2단 다이아프램실(30)은 제1유입로(32)와 제2유입로(34)를 통해 공급되는 유압 혹은 공압에 의해 작동되되, 상기 제1유입로(32)를 통해 유압 혹은 공압이 공급되면 상기 제1구동라인에 의해 대형드로틀밸브가 개방되고, 상기 제2유입로(34)를 통해 유압 혹은 공압이 공급되면 상기 제2구동라인에 의해 소형드로틀밸브가 개방되도록 된 것을 특징으로 하는 디젤엔진의 2단 드로틀밸브.The method of claim 1, wherein the two-stage diaphragm chamber 30 is operated by hydraulic or pneumatic pressure supplied through the first inlet 32 and the second inlet 34, the first inlet 32 Large hydraulic throttle valve is opened by the first driving line when the hydraulic or pneumatic pressure is supplied, and the small throttle valve is supplied by the second driving line when the hydraulic or pneumatic pressure is supplied through the second inflow path 34. Two-stage throttle valve of the diesel engine, characterized in that the opening.
KR1019970079539A 1997-12-30 1997-12-30 Two step throttle valve of diesel engine KR100304277B1 (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3903211A (en) * 1973-08-11 1975-09-02 Toyota Motor Co Ltd Control mechanism and method for dual carburetors

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3903211A (en) * 1973-08-11 1975-09-02 Toyota Motor Co Ltd Control mechanism and method for dual carburetors

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