KR20010046762A - Exhaust Gas Recirculation device of vehicle - Google Patents

Exhaust Gas Recirculation device of vehicle Download PDF

Info

Publication number
KR20010046762A
KR20010046762A KR1019990050659A KR19990050659A KR20010046762A KR 20010046762 A KR20010046762 A KR 20010046762A KR 1019990050659 A KR1019990050659 A KR 1019990050659A KR 19990050659 A KR19990050659 A KR 19990050659A KR 20010046762 A KR20010046762 A KR 20010046762A
Authority
KR
South Korea
Prior art keywords
exhaust gas
actuator
gas recirculation
intake
vehicle
Prior art date
Application number
KR1019990050659A
Other languages
Korean (ko)
Other versions
KR100349758B1 (en
Inventor
남정길
Original Assignee
이계안
현대자동차 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이계안, 현대자동차 주식회사 filed Critical 이계안
Priority to KR1019990050659A priority Critical patent/KR100349758B1/en
Publication of KR20010046762A publication Critical patent/KR20010046762A/en
Application granted granted Critical
Publication of KR100349758B1 publication Critical patent/KR100349758B1/en

Links

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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/52—Systems for actuating EGR valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047—Controlling exhaust gas recirculation [EGR]
    • F02D41/0077—Control of the EGR valve or actuator, e.g. duty cycle, closed loop control of position
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

PURPOSE: A device incorporated in a vehicle for recirculating exhaust gas is provided to control the opening and closing amount of an intake/exhaust valve for increasing a remaining time period of non-burnt gas in cylinders to re-burn the gas. CONSTITUTION: A device incorporated in a vehicle for recirculating exhaust gas includes a main shaft(16) mounted on an intake/exhaust valve(10) of an engine and having a slantly cut lower end, a slide element(18) mounted immediately beside an actuator(20) of which a shaft is operating by a signal of an electronic control unit(ECU;24) and contacting the slant cut surface of the main shaft, and a rod(28) fixed on a rear surface of the actuator for moving vertically in association with the rotation motion of a cam(26), wherein the actuator is filled with wax(22) to be expanded and retracted according to a current signal of the ECU.

Description

자동차용 내장형 배기가스 재순환 장치{Exhaust Gas Recirculation device of vehicle}Built-in exhaust gas recirculation device for automobiles {Exhaust Gas Recirculation device of vehicle}

본 발명은 자동차용 내장형 배기가스 재순환 장치에 관한 것으로서, 엔진에서 미연소된 배기가스의 일부를 잔존하게 만들어, 재연소시킬 수 있도록 한 자동차용 내장형 배기가스 재순환 장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a built-in exhaust gas recirculation apparatus for automobiles, and more particularly, to a built-in exhaust gas recirculation apparatus for automobiles in which a part of unburned exhaust gas remains in an engine and can be reburned.

통상적으로 자동차의 배기가스 재순환 장치는 흡기계통으로 배기가스의 일부를 재순환시켜서 연소할 때의 최고 온도를 낮추어 NOX의 발생을 억제하는 장치이며, 그 대책으로 연소가 끝난 배기가스의 일부를 연소실 내로 유입시켜 연소 가능한 혼합기의 유입을 줄임으로써, 최고 연소 온도를 낮추어 NOX를 줄이는 장치이다.Normally, the exhaust gas recirculation apparatus of automobiles is a device that reduces the maximum temperature when burning by recirculating a part of the exhaust gas through the intake pipe and suppresses the generation of NO X. It is a device that reduces the NO x by lowering the maximum combustion temperature by reducing the inflow of the combustible mixer by inflow.

첨부한 도 2는 종래의 배기가스 재순환 장치를 나타내는 개략도로서, ECU에서 엔진의 회전수(rpm), 냉각수의 온도, 트로틀 밸브의 개도를 감지하여, EGR(Exhaust Gas Recirculation)밸브를 작동시킨 후, 흡기와 배기의 차압에 의하여 배기가스를 재순환시키게 된다.2 is a schematic diagram showing a conventional exhaust gas recirculation apparatus. After detecting an engine speed (rpm), a temperature of a cooling water, and an opening degree of a throttle valve in an ECU, the exhaust gas recirculation (ECR) valve is operated. The exhaust gas is recycled by the differential pressure between the intake and exhaust.

상기와 같은 종래의 배기가스 재순환 장치는 각종 부대장치가 필요하므로, 엔진 단품의 무게가 무거워져서 차량의 연비가 상승하게 된다.Since the conventional exhaust gas recirculation apparatus as described above requires various auxiliary devices, the weight of the engine unit becomes heavy and the fuel economy of the vehicle is increased.

또한, EGR 파이프는 조립공차가 많은 부품에 장착되어 조기 비틀림 응력때문에 내구성이 크게 떨어진다.In addition, EGR pipes are mounted on parts with high assembly tolerances, which greatly reduces their durability due to premature torsional stresses.

따라서, 본 발명은 엔진의 흡배기 밸브의 개폐량을 조절하여, 엔진에서 연소후의 배기가스를 잔존하게 만들어 NOX를 줄이는 자동차용 내장형 배기가스 재순환 장치를 안출한 것으로서, 흡배기 밸브에 액튜에이터를 설치하여, 상기 액튜에이터 축의 좌우운동으로 흡배기 밸브의 상하 리프트가 조절되도록 함으로써, 흡배기 밸브의 개폐량이 조절되도록 한 자동차용 내장형 배기가스 재순환 장치를 제공하는데 그 목적이 있다.Accordingly, the present invention is to provide a built-in exhaust gas recirculation device for automobiles by reducing the amount of NO x by remaining the exhaust gas after combustion in the engine by adjusting the opening and closing amount of the intake and exhaust valve of the engine, by installing an actuator in the intake and exhaust valve, It is an object of the present invention to provide a built-in exhaust gas recirculation apparatus for automobiles in which the up and down lift of the intake and exhaust valve is controlled by the left and right movement of the actuator shaft.

도 1a,1b는 본 발명에 따른 자동차용 내장형 배기가스 재순환 장치를 나타내는 개략도,1a, 1b is a schematic view showing a built-in exhaust gas recirculation apparatus for automobiles according to the present invention,

도 2는 종래에 자동차용 내장형 배기가스 재순환 장치를 나타내는 개략도.2 is a schematic view showing a conventional built-in exhaust gas recirculation apparatus for automobiles.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

10 : 흡,배기 밸브 12 : 스프링 시트10: intake and exhaust valve 12: spring seat

14 : 스프링 16 : 주축14: spring 16: spindle

18 : 슬라이드체 20 : 액튜에이터18: slide body 20: actuator

22 : 왁스 24 : ECU22: wax 24: ECU

26 : 캠 28 : 로드26: cam 28: rod

이하, 첨부도면을 참조로 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

본 발명은 엔진의 흡,배기 밸브(10) 상부에 장착되어 있는 스프링 시트(12)의 저면에 끝단이 사선 절개된 주축(16)을 부착하고, 이 주축(16)의 사선 절개면과 밀착되는 슬라이드체(18)를 축으로 갖고 ECU(24)의 신호로 축이 작동하는 액튜에이터(20)를 바로 옆에 설치하되, 상기 액튜에이터(20)의 후면에는 캠(26)의 회전운동으로 상하 운동하게 되는 로드(28)를 고정하여서 이루어진 것을 특징으로 한다.The present invention attaches the main shaft 16, the end of which is obliquely cut, to the bottom surface of the spring seat 12 mounted on the upper part of the intake / exhaust valve 10 of the engine, and is in close contact with the oblique cut surface of the main shaft 16. An actuator 20 having a slide body 18 as an axis and a shaft operated by a signal of the ECU 24 is installed next to the rear surface of the actuator 20 so as to vertically move by a rotational movement of the cam 26. It is characterized in that the rod 28 is made to be fixed.

특히, 상기 액튜에이터(20)의 내부에는 상기 ECU(24)의 전류신호에 따라 수축 팽창하는 왁스(22)가 채워진다.In particular, the inside of the actuator 20 is filled with a wax 22 that shrinks and expands according to the current signal of the ECU 24.

여기서, 바람직한 실시예로서, 본 발명에 따른 자동차용 내장형 배기가스 재순환 장치를 첨부한 도 1a를 참조로 상세하게 설명하면 다음과 같다.Here, as a preferred embodiment, it will be described in detail with reference to Figure 1a attached to the built-in exhaust gas recirculation apparatus for automobiles according to the present invention.

첨부한 도 1a에서 도면부호 10은 흡배기 밸브이다.In FIG. 1A, reference numeral 10 denotes an intake and exhaust valve.

상기 흡배기 밸브(10)는 캠축의 캠(26)의 회전에 의하여 상하로 운동을 하며 실린더의 흡입 및 배기가스구를 주기적으로 개폐하게 된다.The intake and exhaust valve 10 moves up and down by the rotation of the cam 26 of the camshaft and periodically opens and closes the inlet and exhaust gas ports of the cylinder.

또한, 상기 흡배기밸브(10)의 상단에는 스프링 시트(12)가 부착되어 있고, 이 스프링 시트(12)의 상면에는 스프링(14)이 압축 및 복원 가능하게 설치되어 있다.In addition, a spring seat 12 is attached to an upper end of the intake and exhaust valve 10, and a spring 14 is provided on the upper surface of the spring seat 12 so as to be compressed and restored.

이떼, 상기 스프링 시트(12)의 저면에 주축(16)이 부착되는 바, 이 주축(16)의 저면은 사선으로 절개된 경사면으로 형성된다.Here, the main shaft 16 is attached to the bottom surface of the spring sheet 12, the bottom surface of the main shaft 16 is formed as an inclined surface cut in diagonal lines.

한편, 상기 주축(16)의 경사면과 밀착되는 슬라이드체(18)를 축으로 갖는 액츄에이터(20)가 바로 옆에 설치되어지고, 이 액튜에이터(20)는 ECU(24)와 연결되어진다.On the other hand, the actuator 20 which has the slide body 18 in close contact with the inclined surface of the said main shaft 16 as an axis | shaft is installed next to this actuator 20, and this actuator 20 is connected with ECU24.

또한, 상기 액튜에이터(20)의 내부에는 전류의 열로 팽창되거나, 수축되는 확스(22)가 채워지게 되고, 액튜에이터(20)의 후면에는 수직 절곡된 형태의 로드(28)가 부착되는 바, 상기 로드(28)의 끝에는 캠(26)이 맞닿아 있게 된다.In addition, the inside of the actuator 20 is filled with a widening 22, which expands or contracts with a current of current, and a rod 28 having a vertically bent shape is attached to the rear surface of the actuator 20. At the end of 28, the cam 26 abuts.

여기서 본 발명에 따른 자동차용 내장형 배기가스 재순환 장치의 작동상태를 첨부한 도 1b를 참조로 설명하면 다음과 같다.Referring to Figure 1b attached to the operating state of the built-in exhaust gas recirculation apparatus for automobiles according to the present invention as follows.

차량의 엔진 구동시, 상기 캠(26)의 회전에 따라 로드(28)와 액튜에이터(20)와 슬라이드체(18)가 상하로 운동을 하게 된다.When driving the engine of the vehicle, the rod 28, the actuator 20 and the slide body 18 moves up and down as the cam 26 rotates.

상기와 동시에, 상기 슬라이드체(18)와 밀착되어 있는 주축(16)도 슬라이드체(18)에 밀려 상하 운동을 하게 되고, 동시에 슬라이드체(18)가 부착되어 있는 스프링 시트(12)가 상하로 운동을 하게 됨으로써, 결과적으로 스프링 시트(12)와 일체로 되어 있는 상기 흡배기 밸브(10)가 포트를 개폐하며 상하운동을 주기적으로 반복하게 된다.Simultaneously with this, the main shaft 16 which is in close contact with the slide body 18 is also pushed up and down by the slide body 18, and at the same time, the spring seat 12 with the slide body 18 is attached up and down. As a result, the intake and exhaust valve 10, which is integrated with the spring seat 12, opens and closes the port and periodically repeats the vertical movement.

이때, 상기 ECU(24)에서 엔진의 실린더에서 미연소가스의 발생이 높은 상태 즉, 엔진의 높은 회전수, 냉각수의 높은 온도, 트로틀의 열림각이 큼을 감지하게 되면, 상기 액튜에이터(20)의 내부로 전류를 흘려 보내게 되어, 그 내부의 왁스(22)가 팽창을 하게 된다.At this time, when the ECU 24 detects a high generation of unburned gas in the cylinder of the engine, that is, a high rotational speed of the engine, a high temperature of the coolant, and a large opening angle of the throttle, the inside of the actuator 20 is detected. The current flows through the furnace, and the wax 22 therein expands.

따라서, 상기 왁스(22)의 팽창에 따라 슬라이드체(18)가 돌출 이동을 하게 되는 동시에 상기 사선으로 접촉하고 있는 주축(16)이 상방향으로 밀려나는 이동을 하게 된다.Accordingly, as the wax 22 expands, the slide body 18 protrudes, and at the same time, the main shaft 16 in contact with the diagonal line is pushed upward.

상기 주축(16)이 상방향으로 이동을 하면서, 스프링을 압축하게 되어 스프링(14의 탄성 복원력이 더욱 커지게 된다.As the main shaft 16 moves upward, the spring is compressed to increase the elastic restoring force of the spring 14.

상기와 같은 상태에서, 캠(26)의 회전구동으로 로드(28)와 액튜에이터(20)와 슬라이드체(18)가 상하로 운동을 할 때에, 탄성복원력이 커진 스프링(14)의 힘으로 상기 스프링 시트(12)와 흡배기 밸브(10)는 포트를 개폐하는 힘이 커진다.In the above state, when the rod 28, the actuator 20, and the slide body 18 move up and down by the rotational drive of the cam 26, the spring is increased by the force of the spring 14 having an increased elastic restoring force. The seat 12 and the intake / exhaust valve 10 have a large force for opening and closing the port.

이에따라, 흡배기밸브(10)의 포트에 대한 폐력이 커져서 실린더 내부의 미연소된 배기가스의 빠져나가는 량이 적어져 잔존시간을 높일 수 있다.Accordingly, the closing force on the port of the intake and exhaust valve 10 is increased to reduce the amount of the unburned exhaust gas inside the cylinder to be reduced, thereby increasing the remaining time.

상기 실린더내에서 잔존시간이 길어진 미연소 가스는 재연소시킬 수 있게 된다.Unburned gas having a long remaining time in the cylinder can be reburned.

이상에서 본 바와 같이, 본 발명에 따른 자동차용 내장형 배기가스 재순환 장치에 의하면, 흡배기 밸브의 개폐량을 조절할 수 있도록 함으로써, 실린더내의 미연소 가스 잔존시간을 높여 재연소시킬 수 있는 장점이 있다.As described above, the built-in exhaust gas recirculation apparatus for automobiles according to the present invention has the advantage of being able to adjust the amount of opening and closing of the intake / exhaust valve to increase the remaining time of unburned gas in the cylinder and to reburn it.

Claims (2)

엔진의 흡,배기 밸브(10) 상부에 장착되어 있는 스프링 시트(12)의 저면에 끝단이 사선 절개된 주축(16)을 부착하고, 이 주축(16)의 사선 절개면과 밀착되는 슬라이드체(18)를 축으로 갖고 ECU(24)의 신호로 축이 작동하는 액튜에이터(20)를 바로 옆에 설치하되, 상기 액튜에이터(20)의 후면에는 캠(26)의 회전운동으로 상하 운동하게 되는 로드(28)를 고정하여서 이루어진 것을 특징으로 자동차용 내장형 배기가스 재순환 장치.The main body 16, the end of which is obliquely cut, is attached to the bottom of the spring seat 12 mounted on the upper part of the engine intake / exhaust valve 10, and the slide body is in close contact with the oblique cut surface of the main shaft 16 ( 18) as a shaft, the actuator 20 which is operated by the axis of the signal to the ECU 24 is installed next to the rod, the rear of the actuator 20 is a rod that moves up and down by the rotational movement of the cam 26 ( 28) a built-in exhaust gas recirculation device for automobiles, characterized in that the fixed. 제 1 항에 있어서, 상기 액튜에이터(20)의 내부에는 상기 ECU(24)의 전류신호에 따라 수축 팽창하는 왁스(22)가 채워진 것을 특징으로 하는 자동차용 내장형 배기가스 재순환 장치.The in-vehicle exhaust gas recirculation apparatus of claim 1, wherein the actuator (20) is filled with a wax (22) which shrinks and expands according to the current signal of the ECU (24).
KR1019990050659A 1999-11-15 1999-11-15 Exhaust Gas Recirculation device of vehicle KR100349758B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019990050659A KR100349758B1 (en) 1999-11-15 1999-11-15 Exhaust Gas Recirculation device of vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019990050659A KR100349758B1 (en) 1999-11-15 1999-11-15 Exhaust Gas Recirculation device of vehicle

Publications (2)

Publication Number Publication Date
KR20010046762A true KR20010046762A (en) 2001-06-15
KR100349758B1 KR100349758B1 (en) 2002-08-22

Family

ID=19620167

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019990050659A KR100349758B1 (en) 1999-11-15 1999-11-15 Exhaust Gas Recirculation device of vehicle

Country Status (1)

Country Link
KR (1) KR100349758B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100394617B1 (en) * 2000-09-15 2003-08-14 현대자동차주식회사 Exhaust gas recirculation device of vehicle

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5919904U (en) * 1982-07-28 1984-02-07 日野自動車株式会社 Internal combustion engine exhaust gas recirculation device
JPS63183260A (en) * 1987-01-22 1988-07-28 Mitsubishi Heavy Ind Ltd Internal combustion engine with exhaust gas re-circulating mechanism
KR0141025B1 (en) * 1995-12-14 1998-07-01 김태구 Structure of egr
KR19980037870U (en) * 1996-12-18 1998-09-15 박병재 Variable valve lifting structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100394617B1 (en) * 2000-09-15 2003-08-14 현대자동차주식회사 Exhaust gas recirculation device of vehicle

Also Published As

Publication number Publication date
KR100349758B1 (en) 2002-08-22

Similar Documents

Publication Publication Date Title
JP3886217B2 (en) 4 cycle engine intake system
JP3485434B2 (en) Valve train for internal combustion engine
EP1884636B1 (en) Variable geometry intake manifold for an internal combustion engine
EP1234958B1 (en) A method of and apparatus for controlling quantity of air drawn into internal combustion engine
JP2009030584A (en) Control apparatus for internal combustion engine
JPH06101436A (en) Variable valve system of internal combustion engine
JP4199086B2 (en) Exhaust gas recirculation device for internal combustion engine
JP4190440B2 (en) Valve operating device for internal combustion engine
JP4343021B2 (en) Valve operating device for internal combustion engine
TWI303286B (en)
KR20010046762A (en) Exhaust Gas Recirculation device of vehicle
JP4072676B2 (en) Variable valve gear for engine
JP2000213315A (en) Variable valve system for internal combustion engine
JPH07180515A (en) Valve gear device for internal combustion engine
JP2750800B2 (en) Intake valve control device for internal combustion engine
JPS6125905A (en) Variable valve timing controller
JP4020065B2 (en) Control device for internal combustion engine
JP4085886B2 (en) Variable valve operating device for internal combustion engine
JPH07247815A (en) Valve system for internal combustion engine
KR100589139B1 (en) Variable swirl control apparatus and method thereof
JP3901926B2 (en) Variable valve operating device for internal combustion engine
CN221879554U (en) Throttle body assembly and engine arrangement structure
KR100909497B1 (en) Continuously variable valve lift device in the engine
JP4367317B2 (en) Variable valve operating device for internal combustion engine
KR100251179B1 (en) The apparatus controlling the intake air flow of surge tank

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
LAPS Lapse due to unpaid annual fee