KR101240935B1 - Method for removing soot of EGR cooler - Google Patents

Method for removing soot of EGR cooler Download PDF

Info

Publication number
KR101240935B1
KR101240935B1 KR1020060093001A KR20060093001A KR101240935B1 KR 101240935 B1 KR101240935 B1 KR 101240935B1 KR 1020060093001 A KR1020060093001 A KR 1020060093001A KR 20060093001 A KR20060093001 A KR 20060093001A KR 101240935 B1 KR101240935 B1 KR 101240935B1
Authority
KR
South Korea
Prior art keywords
egr cooler
egr
chute
cooling efficiency
tegr
Prior art date
Application number
KR1020060093001A
Other languages
Korean (ko)
Other versions
KR20080027636A (en
Inventor
최창렬
Original Assignee
현대자동차주식회사
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 현대자동차주식회사 filed Critical 현대자동차주식회사
Priority to KR1020060093001A priority Critical patent/KR101240935B1/en
Publication of KR20080027636A publication Critical patent/KR20080027636A/en
Application granted granted Critical
Publication of KR101240935B1 publication Critical patent/KR101240935B1/en

Links

Images

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
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
    • 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]
    • F02D41/005—Controlling exhaust gas recirculation [EGR] according to engine operating conditions
    • F02D41/0055—Special engine operating conditions, e.g. for regeneration of exhaust gas treatment apparatus
    • 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
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/30—Connections of coolers to other devices, e.g. to valves, heaters, compressors or filters; Coolers characterised by their location on the engine
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

본 발명은 자동차용 EGR 쿨러의 슈트 성분 제거 방법에 관한 것으로서, 더욱 상세하게는 엔진으로부터 배출되는 배기 에미션(emissoin)에 가장 중요한 영역에서 엔진의 1500-2000RPM을 감지하는 동시에 가속페달을 밟는 압력이 2-6바(bar)임을 감지하여 EGR 쿨러의 냉각효율을 계산하고, 그 계산 결과 기준 효율 이하이면 슈트 제거 조건으로 판단하여 EGR 쿨러를 급속 가열시킴으로써, EGR 쿨러내의 슈트 성분이 태워서 제거할 수 있도록 한 자동차용 EGR 쿨러의 슈트 성분 제거 방법을 제공하고자 한 것이다.The present invention relates to a method for removing the chute component of an EGR cooler for automobiles. More specifically, the pressure to press the accelerator pedal at the same time detects 1500-2000 RPM of the engine in the region most important for the exhaust emission (emissoin) emitted from the engine. Calculate the cooling efficiency of the EGR cooler by detecting 2-6 bar, and if the calculation result is less than the standard efficiency, determine the chute removal condition and rapidly heat the EGR cooler so that the chute component in the EGR cooler can be burned and removed. It is to provide a method for removing chute components of an automotive EGR cooler.

EGR 쿨러, 슈트 성분, 에미션, 엔진 RPM, 가속페달 EGR cooler, chute component, emission, engine RPM, accelerator pedal

Description

자동차용 ＥＧＲ 쿨러의 슈트 성분 제거 방법{Method for removing soot of EGR cooler}Method of removing chute component of EVB cooler for automobiles {Method for removing soot of EGR cooler}

도 1은 본 발명에 따른 자동차용 EGR 쿨러의 슈트 성분 제거 방법을 위한 시스템 구축도,1 is a system construction diagram for the chute component removal method of the EGR cooler for automobiles according to the present invention,

도 2는 본 발명에 따른 자동차용 EGR 쿨러의 슈트 성분 제거 방법을 설명하는 순서도,2 is a flowchart illustrating a chute component removal method of an EGR cooler for automobiles according to the present invention;

도 3은 본 발명의 자동차용 EGR 쿨러의 슈트 성분 제거시 EGR 냉각효율 및 기존의 EGR 쿨러 냉각효율을 비교한 그래프,3 is a graph comparing the EGR cooling efficiency and the conventional EGR cooler cooling efficiency when removing the chute component of the EGR cooler for automobiles of the present invention,

도 4 및 도 5는 EGR 쿨러의 구성도 및 외관도.4 and 5 are a schematic view and an external view of the EGR cooler.

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

10 : 배기매니폴드 20: 흡기 매니폴드10: exhaust manifold 20: intake manifold

30 : ERG 파이프 40 : 냉각수 인렛30: ERG pipe 40: coolant inlet

50 : 냉각수 아웃렛 60 : ECU50: coolant outlet 60: ECU

70 : 가속페달 80 : 압력센서70: accelerator pedal 80: pressure sensor

90 : 표시등 100 : EGR 쿨러90 indicator light 100 EGR cooler

본 발명은 자동차용 EGR 쿨러의 슈트 성분 제거 방법에 관한 것으로서, 더욱 상세하게는 엔진으로부터 배출되는 배기 에미션(emissoin)에 가장 중요한 영역에서 엔진의 1500-2000RPM을 감지하는 동시에 가속페달을 밟는 압력이 2-6바(bar)임을 감지하여 EGR 쿨러의 냉각효율을 계산하고, 그 계산 결과 기준 효율 이하이면 슈트 제거 조건으로 판단하여 EGR 쿨러를 급속 가열시킴으로써, EGR 쿨러내의 슈트 성분이 태워서 제거할 수 있도록 한 자동차용 EGR 쿨러의 슈트 성분 제거 방법에 관한 것이다.The present invention relates to a method for removing the chute component of an EGR cooler for automobiles. More specifically, the pressure to press the accelerator pedal at the same time detects 1500-2000 RPM of the engine in the region most important for the exhaust emission (emissoin) emitted from the engine. Calculate the cooling efficiency of the EGR cooler by detecting 2-6 bar, and if the calculation result is less than the standard efficiency, determine the chute removal condition and rapidly heat the EGR cooler so that the chute component in the EGR cooler can be burned and removed. A method for removing chute components of an automotive EGR cooler.

자동차의 배출가스는 일산화탄소(CO), 질소산화물(NOx), 탄화수소(HC) 등의 유해물질이 포함되어 있는 바, 연소과정에서 발생하는 상기 3원소 중 일산화탄소와 탄화수소에 대하여 질소산화물은 항상 반대의 인과관계를 가지고 있다.Vehicle exhaust gas contains harmful substances such as carbon monoxide (CO), nitrogen oxides (NOx), and hydrocarbons (HC), so nitrogen oxides are always opposite to carbon monoxide and hydrocarbons among the three elements generated during combustion. It has a causal relationship.

즉, 실용적인 출력범위에서 일산화탄소와 탄화수소가 가장 감소하는 시점에 질소산화물은 가장 많이 발생하는데, 이러한 질소산화물은 연료가 완전 연소할수록 즉, 엔진이 고온일수록 질소산화물의 발생량은 증가하게 된다.That is, when the carbon dioxide and hydrocarbons are most reduced in the practical output range, nitrogen oxides are most generated. As the fuel is completely burned, that is, as the engine is hot, the amount of nitrogen oxides is increased.

따라서, 상기 질소산화물 등의 배출가스 허용량은 관계 법률로서 규제됨에 따라 배출가스를 줄이는 다양한 기술이 개발되고 있는 바, 그 중 하나가 배기가스 재순환장치(Exhaust Gas Recirculation, EGR)이다.Accordingly, as the allowable amount of the exhaust gas such as nitrogen oxide is regulated as a related law, various technologies for reducing the exhaust gas have been developed, and one of them is an exhaust gas recirculation (EGR).

상기 배기가스 재순환 장치는 다른 유해물질의 급증없이 질소산화물의 발생 량을 줄이기 위해서는 혼합비를 이론 공연비로 유지하면서 연소실로 흡입되는 혼합기 중에 기 연소가스(EGR 가스)의 일부를 공급함으로써, 신기의 양을 줄임과 동시에 연소가스의 열용량을 증가시켜 화염의 온도를 낮추는 방법으로 사용되는 장치이다.The exhaust gas recirculation apparatus supplies a portion of the existing combustion gas (EGR gas) to the mixer sucked into the combustion chamber while maintaining the mixing ratio at the theoretical air-fuel ratio in order to reduce the amount of nitrogen oxides generated without increasing the number of other harmful substances. It is a device used to reduce the temperature of flame by reducing the heat capacity of combustion gas at the same time.

보다 상세하게는, 상기 배기가스 재순환장치(EGR)는 상기 배출가스중 배기가스를 흡기계로 재순환시켜 실린더내의 연소온도를 낮추어 질소산화물의 발생을 억제하는 장치로서, 배기가스중의 질소산화물(NOx)을 저감하는 수단으로 배기가스의 일부를 흡기계통에 되돌려서, 혼합기가 연소할 때 최고 온도를 낮게 하여 질소산화물(NOx)의 생성량을 적게 하는 장치를 말한다.More specifically, the exhaust gas recirculation device (EGR) is a device for suppressing the generation of nitrogen oxides by reducing the combustion temperature in the cylinder by recycling the exhaust gas in the exhaust gas to the intake machine, and NOx in the exhaust gas (NOx). It is a device that returns a part of the exhaust gas to the intake cylinder as a means of reducing) and lowers the maximum temperature when the mixer burns, thereby reducing the amount of nitrogen oxides (NOx) produced.

상기와 같은 기존의 배기가스 재순환 장치의 EGR 쿨러는 다음과 같은 단점이 있었다.The EGR cooler of the conventional exhaust gas recirculation device as described above has the following disadvantages.

종래 기술에서는 EGR 쿨러의 냉각 성능을 비교하기 위해 단순히 초기에는 EGR 가스가 통과하면서 배기가스 성분인 에미션(emission)이 얼마나 저감하는지 확인하고 가장 에미션(emission)이 저감되는 EGR 쿨러를 선택, 적용하였다.In the prior art, in order to compare the cooling performance of the EGR cooler, simply check how much the emission, the emission component, is reduced as the EGR gas is initially passed, and select and apply the EGR cooler that reduces the most emission. It was.

그러나, EGR 쿨러의 냉각 효율을 높이기 위하여 가능한 EGR 가스 통과면을 거칠게 하여 난류 강도를 증가시켜왔는 바, 이렇게 난류 강도를 증가시킴으로 말미암아 도 3에 도시된 그래프에서 보는 바와 같이, EGR 쿨러내에 디젤 엔진 배출 가스내의 슈트(Soot) 성분이 퇴적되어 쿨러 자체의 효율이 점차 악화되는 단점이 있다.However, in order to increase the cooling efficiency of the EGR cooler, the turbulence intensity has been increased by roughening the EGR gas passage surface as much as possible, and by increasing the turbulence intensity, as shown in the graph shown in FIG. There is a disadvantage that the efficiency of the cooler itself is gradually deteriorated due to the accumulation of soot components in the gas.

이렇게 효율이 악화된 EGR 쿨러는 초기 의도와는 다르게 EGR 가스를 충분히 냉각시키지 못하며, 따라서 엔진에서 배출되는 에미션(Emission) 역시 악화되기 마련이다.This deteriorated efficiency of the EGR cooler does not cool the EGR gas sufficiently, contrary to its initial intention, and the emission from the engine is also deteriorated.

즉, EGR 쿨러를 장기간 사용함에 따라 그 내부에 퇴적되는 슈트 성분으로 인하여, EGR 쿨러 열효율이 저감되고 이러한 열효율 저감에 따라 배기가스중 NOx가 규제치를 상회하게 되는 문제점이 있고, 이러한 문제점을 감안하여 필요 이상의 대용량 EGR을 적용할 수 있지만, 엔진의 중량 상승, 비용 낭비 등의 단점이 따르게 된다.In other words, due to the chute components deposited therein as the EGR cooler is used for a long time, the EGR cooler thermal efficiency is reduced and the NOx in the exhaust gas exceeds the regulated value due to such thermal efficiency reduction. Although the above-mentioned large-capacity EGR can be applied, disadvantages such as an increase in weight of the engine and waste of cost are accompanied.

본 발명은 상기와 같은 점을 감안하여 안출한 것으로서, 엔진으로부터 배출되는 배기 에미션(emissoin)에 가장 중요한 영역에서 엔진의 1500-2000RPM을 감지하는 동시에 가속페달을 밟는 압력이 2-6바(bar)임을 감지하여 EGR 쿨러의 냉각효율을 계산하고, 그 계산 결과 기준 효율 이하이면 슈트 제거 조건으로 판단하여, 차량의 고속 주행 모드에 의하여 EGR 쿨러를 급속 가열시킴으로써, EGR 쿨러내의 슈트 성분을 태워서 제거할 수 있도록 한 자동차용 EGR 쿨러의 슈트 성분 제거 방법을 제공하는데 그 목적이 있다.The present invention has been made in view of the above, and the pressure to press the accelerator pedal at the same time detect the 1500-2000 RPM of the engine in the most important area for the exhaust emission (emissoin) discharged from the engine (bar) To calculate the cooling efficiency of the EGR cooler, and if it is less than the reference efficiency, it is determined as a chute removal condition, and the EGR cooler is rapidly heated in the high-speed driving mode of the vehicle to burn and remove the chute components in the EGR cooler. An object of the present invention is to provide a method for removing chute components of an automotive EGR cooler.

상기한 목적을 달성하기 위한 본 발명은: 엔진 운전 영역에서 중요 에미션 발생 영역인지를 판단하는 단계와; 중요 에미션 발생 영역이면, EGR 쿨러의 냉각 효율을 계산하는 단계와; 상기 EGR 쿨러의 냉각효율이 허용 최저(기준치) 냉각 효율보다 작으면, EGR 쿨러내에 슈트 성분이 퇴적된 것으로 판단하여, 슈트 성분을 태우라는 표시등을 점등시켜 고속/고부하 운전 모드를 지시하는 단계와; 차량을 고속/고부하 운전모드로서 3000rpm 및 80km/h 이상의 고속으로 주행시킴으로써, EGR 쿨러가 500℃ 이상 5분 동안 가열되어 EGR 쿨러내의 슈트 성분을 태워서 제거하는 단계를 포함하여 이루어지는 것을 특징으로 하는 자동차용 EGR 쿨러의 슈트 성분 제거 방법을 제공한다.The present invention for achieving the above object comprises the steps of: determining whether the critical emission area in the engine operating area; Calculating a cooling efficiency of the EGR cooler if it is an important emission generating region; If the cooling efficiency of the EGR cooler is less than the allowable minimum (reference value) cooling efficiency, judging that a chute component is deposited in the EGR cooler, indicating a high speed / high load operation mode by turning on an indicator light to burn the chute component; By driving the vehicle at a high speed of 3000rpm and 80km / h or more as a high speed / high load operation mode, the EGR cooler is heated for 500 minutes or more for 5 minutes to burn the chute components in the EGR cooler to remove the Provided is a method for removing chute components of an EGR cooler.

바람직한 구현예로서, 상기 냉각효율을 계산하는 단계는 아래의 식을 이용하여 계산되는 것을 특징으로 한다.In a preferred embodiment, the step of calculating the cooling efficiency is characterized in that it is calculated using the following equation.

Eff=(Tegr_in - Tegr_out)/(Tegr_in - Twater_in)×100(%)Eff = (Tegr_in-Tegr_out) / (Tegr_in-Twater_in) × 100 (%)

Tegr_in : EGR 쿨러 입구측 EGR 가스 온도,Tegr_in: EGR gas temperature at EGR cooler inlet,

Tegr_out : EGR 쿨러 출구측 EGR 가스 온도,Tegr_out: EGR gas temperature at the EGR cooler outlet,

Twater_in : EGR 쿨러 입구측 냉각수 온도.Twater_in: EGR cooler inlet coolant temperature.

더욱 바람직한 구현예로서, 상기 냉각효율이 기준치로서 75% 이하이면 EGR클러내의 슈트 성분이 퇴적된 것으로 판단하는 것을 특징으로 한다.In a more preferred embodiment, when the cooling efficiency is 75% or less as a reference value, it is determined that the chute component in the EGR cleaner is deposited.

이하, 본 발명의 바람직한 실시예를 첨부도면을 참조로 상세하게 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

통상의 EGR 쿨러의 시스템 구성을 보면, 도 4에 도시된 바와 같이 배기매니폴더(10)로부터 배출되는 배기가스의 일부가 흡기매니폴더(20)로 재순환되도록 한 EGR 파이프(30)와, 상기 EGR 파이프(30)의 소정위치에 설치되어 배기가스를 냉각시 켜 흡기매니폴드(20)로 보내주는 EGR 쿨러(100)가 포함되어 있다.As shown in FIG. 4, an EGR pipe 30 which allows a part of the exhaust gas discharged from the exhaust manifold 10 to be recycled to the intake manifold 20, and the EGR. The EGR cooler 100 is installed at a predetermined position of the pipe 30 to cool the exhaust gas and send it to the intake manifold 20.

한편, 도 5에 도시된 바와 같이 EGR 쿨러(100)에는 냉각수 인렛(40) 및 아웃렛(50)이 형성되어, 그 내부로 냉각수의 순환이 이루어진다.Meanwhile, as illustrated in FIG. 5, the coolant inlet 40 and the outlet 50 are formed in the EGR cooler 100, and the coolant circulates therein.

엔진 운전 영역중 EGR을 사용하는 영역은 대부분 중저속 중저부하 영역이며, 이 영역의 EGR 가스의 최고 온도는 통상 500℃ 내외이고, 평균적인 온도는 300∼400℃ 정도이다.Most of the engine operating region using EGR is a medium to low speed medium to low load region. The maximum temperature of the EGR gas in this region is usually around 500 ° C, and the average temperature is about 300 to 400 ° C.

상기 평균 온도범위에서 EGR 쿨러(100) 내부에 쌓여있는 슈트 성분을 산화시키기는 힘들며, 통상 600℃ 이상의 고온 가스가 통과하여야 EGR 쿨러(100) 내부의 침전물인 슈트 성분을 태워서 제거할 수 있다.It is difficult to oxidize the chute components accumulated in the EGR cooler 100 in the average temperature range, and can be removed by burning the chute component, which is a precipitate inside the EGR cooler 100, usually when a high temperature gas of 600 ° C. or more passes.

이에, 본 발명은 EGR 쿨러내의 슈트 성분을 제거하고자 에미션 발생이 많은 엔진 운전 영역에서 EGR 쿨러의 냉각효율을 계산하고, 기준치 이하이면 EGR 쿨러내의 슈트 성분을 태워서 제거할 수 있는 주행모드로 전환되도록 한 것이다.Therefore, the present invention calculates the cooling efficiency of the EGR cooler in the engine operating region with a lot of emission to remove the chute components in the EGR cooler, and if the reference value is less than the standard value, so as to switch to a driving mode that can burn by removing the chute components in the EGR cooler. It is.

첨부한 도 1은 본 발명에 따른 자동차용 EGR 쿨러의 슈트 성분 제거 방법을 위한 시스템 구축도이고, 도 2는 본 발명에 따른 자동차용 EGR 쿨러의 슈트 성분 제거 방법을 설명하는 순서도이다.Attached FIG. 1 is a system construction diagram for a chute component removal method for an EGR cooler for automobiles according to the present invention, and FIG. 2 is a flowchart illustrating a chute component removal method for an EGR cooler for automobiles according to the present invention.

먼저, 엔진 운전 영역에서 중요 에미션 발생 영역 인지를 판단한다.First, it is determined whether it is an important emission generation area in the engine operation area.

차량 주행중, 에미션 발생에 가장 중요한 영역으로서, 많은 시간 및 운전이 집중되는 엔진 RPM 1500~2000rpm 을 ECU(60)에서 감지하고, 동시에 가속페달(70)에 장착된 압력센서(80)로부터 가속페달이 2~6bar로 가압됨을 ECU(60)에서 감지한다.While driving a vehicle, the most important area for generating emission, the engine RPM 1500 ~ 2000rpm which concentrates a lot of time and driving is detected by the ECU 60, and at the same time the accelerator pedal from the pressure sensor 80 mounted on the accelerator pedal 70 The ECU 60 senses that this is pressed to 2-6 bar.

다음으로, 상기 ECU(60)에서 EGR 쿨러의 냉각 효율을 아래의 식에 의하여 계 산을 시작한다.Next, the ECU 60 starts calculating the cooling efficiency of the EGR cooler by the following equation.

냉각효율(Eff)=(Tegr_in - Tegr_out)/(Tegr_in - Twater_in)×100(%)Cooling Efficiency (Eff) = (Tegr_in-Tegr_out) / (Tegr_in-Twater_in) × 100 (%)

Tegr_in : EGR 쿨러 입구측 EGR 가스 온도,Tegr_in: EGR gas temperature at EGR cooler inlet,

Tegr_out : EGR 쿨러 출구측 EGR 가스 온도,Tegr_out: EGR gas temperature at the EGR cooler outlet,

Twater_in : EGR 쿨러 입구측 냉각수 온도.Twater_in: EGR cooler inlet coolant temperature.

이어서, 상기 EGR 쿨러(100)의 냉각효율이 허용 최저(기준치) 냉각 효율보다 작으면, EGR 쿨러(100)내에 슈트 성분이 퇴적된 것으로 판단하여, ECU가 슈트 성분을 태우라는 표시등(90)을 점등시켜 운전자에게 고속/고부하 운전 모드를 지시하게 된다.Subsequently, if the cooling efficiency of the EGR cooler 100 is smaller than the allowable minimum (reference value) cooling efficiency, it is determined that the chute component is deposited in the EGR cooler 100, and the indicator 90 instructs the ECU to burn the chute component. Lights up to instruct the driver in high speed / high load operation mode.

이에, 운전자는 차량을 고속/고부하 운전모드로서 3000rpm 및 80km/h 이상의 고속으로 주행시킴으로써, EGR 쿨러(100)가 500℃ 이상 5분 동안 가열되도록 한다.Accordingly, the driver drives the vehicle at a high speed of 3000 rpm and 80 km / h or more as a high speed / high load driving mode, thereby allowing the EGR cooler 100 to be heated for 500 minutes or more for 5 minutes.

따라서, 상기 EGR 쿨러가 가열됨에 따라 EGR 쿨러내의 슈트 성분이 산화되어 제거될 수 있으며, 도 3의 그래프에서 보는 바와 같이 EGR 냉각효율이 슈트 성분 제거로 기준치인 75% 이상으로 개선될 수 있다.Accordingly, as the EGR cooler is heated, the chute component in the EGR cooler may be oxidized and removed, and as shown in the graph of FIG. 3, the EGR cooling efficiency may be improved to 75% or more, which is a standard value by removing the chute component.

물론, 강제로 고속 주행모드로 돌입하는 것은 운전자 안전상 적합하지 않으므로, 상황에 따라 운전자가 고속주행 모드를 실시하면 된다.Of course, forcibly entering the high speed driving mode is not suitable for driver safety, so the driver may implement the high speed driving mode depending on the situation.

이상에서 본 바와 같이, 본 발명에 따른 자동차용 EGR 쿨러의 슈트 성분 제거 방법에 의하면, 엔진으로부터 배출되는 배기 에미션(emissoin)에 가장 중요한 영역에서 엔진의 1500-2000RPM을 감지하는 동시에 가속페달을 밟는 압력이 2-6바(bar)임을 감지하여 EGR 쿨러의 냉각효율을 계산하고, 그 계산 결과 기준 효율 이하이면 슈트 제거 조건으로 판단하여, 차량의 고속 주행 모드에 의하여 EGR 쿨러를 급속 가열시킴으로써, EGR 쿨러내의 슈트 성분을 태워서 제거할 수 있는 효과를 제공한다.As described above, according to the method of eliminating the chute component of the EGR cooler for automobiles according to the present invention, while detecting the 1500-2000 RPM of the engine in the most important area for the exhaust emission (emissoin) discharged from the engine while pressing the accelerator pedal By detecting that the pressure is 2-6 bar, the cooling efficiency of the EGR cooler is calculated, and if the calculation result is less than the reference efficiency, it is determined as the chute removal condition, and the EGR cooler is rapidly heated by the high-speed driving mode of the vehicle. It burns and removes the chute ingredients in the cooler.

Claims (3)

엔진 운전 영역에서 중요 에미션 발생 영역인지를 판단하는 단계와;Determining whether it is an important emission generating region in the engine driving region; 중요 에미션 발생 영역이면, EGR 쿨러의 냉각효율을 계산하는 단계와;Calculating a cooling efficiency of the EGR cooler if it is an important emission generating region; 상기 EGR 쿨러의 냉각효율이 허용 최저(기준치) 냉각 효율보다 작으면, EGR 쿨러내에 슈트 성분이 퇴적된 것으로 판단하여, 슈트 성분을 태우라는 표시등을 점등시켜 고속/고부하 운전 모드를 지시하는 단계와;If the cooling efficiency of the EGR cooler is less than the allowable minimum (reference value) cooling efficiency, judging that a chute component is deposited in the EGR cooler, indicating a high speed / high load operation mode by turning on an indicator light to burn the chute component; 차량을 고속/고부하 운전모드로서 3000rpm 및 80km/h 이상의 고속으로 주행시킴으로써, EGR 쿨러가 500℃ 이상 5분 동안 가열되어 EGR 쿨러내의 슈트 성분을 태워서 제거하는 단계;Driving the vehicle at a high speed of 3000 rpm and 80 km / h or more as a high speed / high load driving mode such that the EGR cooler is heated for at least 500 ° C. for 5 minutes to burn off the chute components in the EGR cooler; 를 포함하여 이루어지고, Including, 상기 냉각효율을 계산하는 단계는 아래의 식을 이용하여 계산되는 것을 특징으로 하는 자동차용 EGR 쿨러의 슈트 성분 제거 방법.The step of calculating the cooling efficiency is the chute component removal method of the EGR cooler for cars, characterized in that calculated using the following equation. Eff=(Tegr_in - Tegr_out)/(Tegr_in - Twater_in)×100(%)Eff = (Tegr_in-Tegr_out) / (Tegr_in-Twater_in) × 100 (%) Tegr_in : EGR 쿨러 입구측 EGR 가스 온도,Tegr_in: EGR gas temperature at EGR cooler inlet, Tegr_out : EGR 쿨러 출구측 EGR 가스 온도,Tegr_out: EGR gas temperature at the EGR cooler outlet, Twater_in : EGR 쿨러 입구측 냉각수 온도.Twater_in: EGR cooler inlet coolant temperature. 삭제delete 청구항 1에 있어서, 상기 냉각효율이 기준치로서 75% 이하이면 EGR클러내의 슈트 성분이 퇴적된 것으로 판단하는 것을 특징으로 하는 자동차용 EGR 쿨러의 슈트 성분 제거 방법.The method according to claim 1, wherein if the cooling efficiency is 75% or less as a reference value, it is determined that the chute component in the EGR clutch is deposited.
KR1020060093001A 2006-09-25 2006-09-25 Method for removing soot of EGR cooler KR101240935B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020060093001A KR101240935B1 (en) 2006-09-25 2006-09-25 Method for removing soot of EGR cooler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020060093001A KR101240935B1 (en) 2006-09-25 2006-09-25 Method for removing soot of EGR cooler

Publications (2)

Publication Number Publication Date
KR20080027636A KR20080027636A (en) 2008-03-28
KR101240935B1 true KR101240935B1 (en) 2013-03-08

Family

ID=39414493

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020060093001A KR101240935B1 (en) 2006-09-25 2006-09-25 Method for removing soot of EGR cooler

Country Status (1)

Country Link
KR (1) KR101240935B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004211649A (en) 2003-01-08 2004-07-29 Toyota Motor Corp Exhaust gas recirculation cooler system
JP2005133580A (en) * 2003-10-28 2005-05-26 Denso Corp Exhaust gas heat exchanger
KR20060069627A (en) * 2004-12-17 2006-06-22 기아자동차주식회사 Control method of egr cooler
KR100792863B1 (en) 2006-08-23 2008-01-08 현대자동차주식회사 Method for control egr cooler of vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004211649A (en) 2003-01-08 2004-07-29 Toyota Motor Corp Exhaust gas recirculation cooler system
JP2005133580A (en) * 2003-10-28 2005-05-26 Denso Corp Exhaust gas heat exchanger
KR20060069627A (en) * 2004-12-17 2006-06-22 기아자동차주식회사 Control method of egr cooler
KR100792863B1 (en) 2006-08-23 2008-01-08 현대자동차주식회사 Method for control egr cooler of vehicle

Also Published As

Publication number Publication date
KR20080027636A (en) 2008-03-28

Similar Documents

Publication Publication Date Title
US8042326B2 (en) Intake air heater for assisting DPF regeneration
US7036305B2 (en) Exhaust gas purification device of engine for vehicle
US20100050757A1 (en) Method and system to determine the efficiency of a diesel oxidation catalyst
US8156733B2 (en) Method of operating an internal combustion engine to heat up a selective catalyst reducer
US7073326B2 (en) Diesel particulate matter reduction system and a method thereof
US20090164108A1 (en) Thermal management for an internal combustion engine to optimize diesel particulate filter regeneration events
CN101985894A (en) Method of monitoring hydrocarbon levels in a diesel particulate filter
KR20130073054A (en) Forced regeneration control machine for diesel particulate filter
US20120042632A1 (en) Method and apparatus for processing exhaust gas in internal combustion engine
US10012120B2 (en) Apparatus and method for regenerating diesel particular matter filter
US20080307771A1 (en) Cold start white smoke aftertreatment protection
JP2007211788A (en) Exhaust emission control device for internal combustion engine
KR101240935B1 (en) Method for removing soot of EGR cooler
US7434388B2 (en) Method and system for regeneration of a particulate filter
US20090164085A1 (en) Method to operate vehicle with internal combustion engine and exhaust aftertreatment system according to detected drive cycles
KR20110012287A (en) Method for controlling injection amount of fuel of burner and aftertreating device of exhaust gas
KR100792863B1 (en) Method for control egr cooler of vehicle
CN111094729B (en) Method for regenerating a particle filter of a heat engine
JP3785938B2 (en) Engine control device
KR101473803B1 (en) Control methode for exhaust gas decreasing device
JP5240514B2 (en) Engine exhaust gas recirculation system
CN106546652A (en) Apparatus and method for removing the toxicity of exhaust gas oxygensensor
EP1512849A2 (en) Exhaust purifying apparatus and method for purifying exhaust
KR100789166B1 (en) Learning adaptive control method and simultaneous reduction system on exhaust gas and particulate matter of diesel vehicle for retrofit
KR20110012338A (en) Method for emission controlling of diesel particulate filter

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
FPAY Annual fee payment

Payment date: 20180227

Year of fee payment: 6

FPAY Annual fee payment

Payment date: 20190227

Year of fee payment: 7

FPAY Annual fee payment

Payment date: 20200227

Year of fee payment: 8