TR201509225A2 - EGR COOLING SYSTEM AND METHOD - Google Patents
EGR COOLING SYSTEM AND METHOD Download PDFInfo
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- TR201509225A2 TR201509225A2 TR2015/09225A TR201509225A TR201509225A2 TR 201509225 A2 TR201509225 A2 TR 201509225A2 TR 2015/09225 A TR2015/09225 A TR 2015/09225A TR 201509225 A TR201509225 A TR 201509225A TR 201509225 A2 TR201509225 A2 TR 201509225A2
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- Prior art keywords
- egr
- coolant
- cooling
- temperature
- liquid
- Prior art date
Links
- 238000000034 method Methods 0.000 title description 9
- 238000001816 cooling Methods 0.000 claims abstract description 97
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000002826 coolant Substances 0.000 claims description 108
- 239000007788 liquid Substances 0.000 claims description 35
- 239000000110 cooling liquid Substances 0.000 claims description 16
- 238000012546 transfer Methods 0.000 claims description 7
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 239000000498 cooling water Substances 0.000 abstract description 18
- 239000007789 gas Substances 0.000 description 46
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 15
- 238000002485 combustion reaction Methods 0.000 description 15
- 238000009835 boiling Methods 0.000 description 10
- 230000007257 malfunction Effects 0.000 description 5
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 239000012809 cooling fluid Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000002528 anti-freeze Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Classifications
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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
- 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
- F02M26/23—Layout, e.g. schematics
- F02M26/24—Layout, e.g. schematics with two or more coolers
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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
- 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
- F02M26/23—Layout, e.g. schematics
- F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers
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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
- 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
- F02M26/33—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 controlling the temperature of the recirculated gases
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
Bu buluş, araçların EGR sisteminde kullanılan soğutma suyunun sıcaklığını tercih edilen sıcaklık aralığında tutmayı sağlayan, soğutma suyu sıcaklığı istenilen sıcaklık aralığı dışına çıktığında suyun debisini değiştiren bir EGR soğutma sistemi (1) ve EGR soğutma yöntemi (100) ile ilgilidir.The present invention relates to an EGR cooling system (1) and the EGR cooling method (100) that enable keeping the temperature of the cooling water used in the EGR system of vehicles in the preferred temperature range, and changing the flow of water when the cooling water temperature exceeds the desired temperature range.
Description
TARIFNAME Teknik Alan Bu bulus, araçlarin EGR sisteminde kullanilan sogutma suyunun sicakligini tercih edilen sicaklik araliginda tutmayi saglayan, sogutma suyu sicakligi istenilen sicaklik araligi disina çiktiginda suyun debisini degistiren bir EGR sogutma sistemi ve yöntemi ile ilgilidir. Önceki Teknik Benzinli ve dizel içten yanmali motorlarda, yanma sonucu karbonmonoksit (CO), nitrojen oksit (NOK), hidrokarbon (HC) gibi bazi zararli gazlar ortaya çikmaktadir. Yanma sonucu ortaya çikan zararli gazlarin dogrudan atmosfere atilmasi çevre ve canli sagligi açisindan çok tehlikeli ve yasaktir. Yanma sonucu ortaya çikan zararli gazlar, disari atilmadan önce emisyon degerleri çevreye zarar vermeyecek degerlere düsürülmelidir. Içten yanmali motorlu tasitlarda, zararli gazlarin kabul edilebilir emisyon degerlerine düsürülmesi için bir çok sistem ve uygulama bulunmaktadir. Bu uygulamalardan bir tanesi de egzoz gazi resirkülasyonu (EGR) sistemidir. EGR sisteminde, egzoz gazlarinin bir kismi yeniden yanma odasina gönderilir. Yanma sürecine yeniden dahil edilen gazlar motorda yanmazlar, motorda yanma sicakligini düsürerek zararli gazlarin egzoz sisteminden atilmasini engellerler. EGR sistemi sayesinde motorda yanma sicakligi düsürülür ve nitrojen oksit gazinin olusumu azaltilir. EGR sisteminde sirküle edilecek gazin miktari, motor kalibrasyon hedefleri dogrultusunda EGR valfi ile saglanir ve genellikle dikme tip veya kelebek tipi vana kullanilir. EGR sistemi sayesinde nitrojen oksit (NOX) olusumu yaklasik olarak 30-40% oraninda azalmaktadir. 8343.594 EGR sisteminde, motorda yanma sonucu ortaya çikan egzoz gazi, EGR sisteminde gazin yogunlugunu arttirarak yanma odasina daha fazla gaz göndermek amaciyla bir sogutmaya tabi tutulur. Yanma sonucu ortaya çikan egzoz gazi EGR sisteminde sogutulup, yogunlastirildiktan sonra motor temiz hava emisine geri verilir. Egzoz gazinin sogutulmasi, EGR sistemi içerisinde bulunan sogutma esanjörü ile saglanir. Sogutma esanjörü sayesinde, istenilen yogunlukta ve soguklukta egzoz gazi (EGR gazi) yeniden motor hava emise verilir. Sogutma esanjörü araciligi ile sogutularak yeniden motor emise verilen egzoz gazi, motor içerisinde bulunan gazlardan daha yogun olmakta ve motorda nitrojen oksit (NOK) salinimi azaltilmaktadir. DESCRIPTION Technical Area This invention prefers the temperature of the coolant used in the EGR system of vehicles. the desired cooling water temperature, which keeps it in the desired temperature range. An EGR cooler that changes the flow of water when it goes out of the temperature range system and method. Prior Art In gasoline and diesel internal combustion engines, as a result of combustion, carbon monoxide (CO), Some harmful gases such as nitrogen oxide (NOK), hydrocarbon (HC) are produced. is coming out. Harmful gases resulting from combustion are directly released into the atmosphere. Disposal of it is very dangerous and prohibited in terms of environment and animal health. combustion result The harmful gases that come out are harmful to the environment before their emission values are discharged. should be reduced to values that will not give. In vehicles with internal combustion engines, harmful Many systems and systems to reduce gases to acceptable emission values. application exists. One of these applications is exhaust gas. recirculation (EGR) system. In the EGR system, some of the exhaust gases sent back to the combustion chamber. Gases reintroduced into the combustion process They do not burn in the engine, by reducing the combustion temperature in the engine, harmful gases are exhausted. They prevent it from being kicked out of the system. Combustion in the engine thanks to the EGR system Its temperature is lowered and the formation of nitrogen oxide gas is reduced. In the EGR system amount of gas to be circulated, EGR in line with engine calibration targets It is provided with a valve and usually a vertical or butterfly type valve is used. EGR Thanks to the system, nitrogen oxide (NOX) formation is approximately 30-40%. is decreasing. 8343,594 In the EGR system, the exhaust gas that comes out as a result of combustion in the engine is in the EGR system. in order to send more gas to the combustion chamber by increasing the density of the gas. subjected to a cooling. Exhaust gas EGR resulting from combustion After being cooled and condensed in the engine system, the engine is returned to the clean air intake. is given. Cooling of the exhaust gas, cooling in the EGR system It is provided with the heat exchanger. Thanks to the cooling exchanger, the desired density and Exhaust gas (EGR gas) is fed back into the engine air intake when it is cold. Cooling The exhaust gas, which is cooled by the heat exchanger and given back to the engine intake, It is more dense than the gases in it and nitrogen oxide in the engine (NOC) release is reduced.
EGR sistemlerinde kullanilan sogutma esanjörü genellikle, tüpler ve tüplerin etrafindan geçerek sogutmayi saglayan su gibi sogutma sivisinda olusur. EGR egzoz gazi tüplerin içerisinden geçer, tüplerin çevresinden de su geçer ve su tüplerin yüzeyini dolayisi ile tüplerin içerisinden geçen gazi sogutur. EGR sisteminde sogutma, motor sogutma suyu ile saglanir. Sogutma tüplerinin etrafi motor sogutma suyu ile çevrilir. Böylece tüp içerisinden geçen gazdan motor sogutma suyuna dogru bir isi akisi saglanarak egzoz gazi sogutulur. Egzoz gazi sogutulurken ayni zamanda motor sogutma suyu isinir. Sogutma sirasinda, motor sogutma suyunun geçtigi her yerde egzoz gazi debisi ayni degildir, bazi yerlerde gaz debisi fazla iken motor sogutma suyu debisi azdir. Bu durumda, gazin istenilen sicakliga sogutulmasi için motor sogutma suyuna daha fazla isi geçmesine ve motor sogutma suyunun istenilenden daha fazla artmasina neden olur. Motor sogutma suyu sicakliginin istenilenden daha fazla artmasi, sogutma suyunda kaynama ihtimalini ortaya çikarir. Motor sogutma suyunun kaynamasi mevcut uygulamalarda rastlanan en Önemli teknik sorunlardan biridir. The cooling heat exchanger used in EGR systems is generally composed of tubes and tubes. It is formed in the cooling liquid like water, which provides cooling by passing around it. EGR Exhaust gas passes through the tubes, water passes around the tubes and water It cools the surface of the tubes and therefore the gas passing through the tubes. EGR In the system, cooling is provided by engine cooling water. Around the cooling tubes rotated with engine coolant. Thus, the engine from the gas passing through the tube The exhaust gas is cooled by providing a heat flow towards the cooling water. Exhaust gas While cooling, the engine coolant heats up at the same time. During cooling, the engine The exhaust gas flow is not the same everywhere the cooling water passes, in some places While the gas flow is high, the engine coolant flow is low. In this case, the gas More heat is added to the engine coolant to cool it to the desired temperature. pass through and cause the engine coolant to increase more than desired. It is possible. If the engine coolant temperature rises more than desired, the cooling raises the possibility of boiling in the water. Boiling of engine coolant It is one of the most important technical problems encountered in current applications.
Mevcut sistemlerde en çok rastlanan bir diger teknik sorunda, aracin çok uzun süre hiç durmadan kullanilmasi sebebi ile su sisteminde gaz kaçaklari olusmasidir.Another technical problem that is most common in existing systems is when the vehicle is too long. It is the occurrence of gas leaks in the water system due to non-stop use for a period of time.
Sogutma su sisteminde meydana gelen gaz kaçaklari, su tankindaki basincin düsmesine neden olur. Sogutma suyunun basinci düstügünde, kaynama sicakligi 8343.594 da asagiya düser ve suyun daha kolay kaynamasina neden olur. Ayni zamanda EGR sogutucusundaki motor sogutma suyu giris çikis sicakliklari arasindaki sicaklik farkinin büyük olmasi EGR sogutucusunu termal yorulma açisindan zorlamaktadir. EGR sistemi tasarlanirken, EGR sogutucusu içerisindeki kaynama problemi ve motor sogutma suyu sicaklik degisimi göz önünde tutularak EGR sogutucusu içerisinden geçmesi istenilen motor sogutma suyu debisi hesaplanir ve su pompasi ona göre seçilir. Gas leaks in the cooling water system are caused by the pressure in the water tank. causes it to fall. When the pressure of the cooling water drops, the boiling temperature 8343,594 also falls down and causes the water to boil more easily. At the same time between the engine coolant inlet and outlet temperatures in the EGR cooler. A large temperature difference can affect the EGR cooler in terms of thermal fatigue. forcing. When designing the EGR system, boiling inside the EGR cooler EGR, taking into account the problem and engine coolant temperature change The engine cooling water flow rate that is required to pass through the cooler is calculated and water pump is selected accordingly.
EGR sogutucusunun içinden geçen motor sogutma suyu sicakliginin çok fazla yükselmesi ve kaynama olmasi, EGR sisteminde bulunan sogutma tüplerine ve detlektör plakalarina zarar verir. Sogutma tüpleri ve deilektör plakalari üzerinde geçen sicak su, parçalarin üzerindeki stres seviyesinin artmasina, metal sicakliklarinin yükselmesine hatta tüp ve deflektör plakalarinin kirilmasina neden olur. EGR sisteminde bir bozulma veya kirilma, sistemin kullanilmaz hale gelmesine, emisyon degerlerinin istenmeyen sekilde artmasina ve su seviyesinde azalmaya neden olur. Su seviyesindeki azalma motorun ciddi zarar görmesine, hatta kullanilamaz hale gelmesine neden olabilir. EGR sisteminde bulunan söz konusu iç parçalarin kirilmasi durumunda, bu parçalarin tamir edilmesi mümkün degildir ve tamamen degistirilmesi gerekir. The temperature of the engine coolant passing through the EGR cooler is too high. rise and boiling, the cooling tubes in the EGR system and damage the detector plates. On cooling tubes and deictor plates passing hot water can increase the stress level on the parts, metal cause the temperature to rise and even the tube and deflector plates to break. It is possible. A breakdown or break in the EGR system may render the system unusable. emissions, an undesirable increase in emission values and the water level causes a decrease. The decrease in water level can cause serious damage to the engine, It may even render it unusable. Word found in the EGR system If the internal parts in question are broken, it is possible to repair these parts. is not and must be completely replaced.
EGR sisteminde, sogutma suyu sicakliginin kontrol edilmemesi ve sogutma suyunun kaynamasi, EGR sisteminde ve motorda arizaya neden olur. Mevcut EGR sistemlerinde, sogutma suyu sicakligini kontrol ederek, sogutma suyu sicakligi tercih edilen sicaklik araligini geçtiginde suyun debisinin arttirilarak sicakligin kontrol edilmesine yönelik bir uygulama bulunmamaktadir. In the EGR system, the coolant temperature is not controlled and the cooling boiling water will cause malfunction in the EGR system and the engine. Available In EGR systems, by controlling the coolant temperature, the cooling water By increasing the flow rate of the water when the temperature exceeds the preferred temperature range. There is no application to control the temperature.
Teknigin bilinen durumunda yer alan US7380544 sayili Birlesik Devletler patent dokümaninda, iki adet sogutma sistemine sahip bir EGR sisteminden bahsedilmektedir. Sogutma sistemleri egzoz borusu boyunca sirali olarak yerlestirilmistir. Söz konusu patent dokümaninda açiklanan yapida, sogutma suyunun sicakliginin kontrol edilmesi, sogutma suyu debisinin degistirilebilmesi 8343.594 açiklanmamaktadir. Söz konusu patent dokümani ile basvuru konusu bulus arasindaki en bariz fark sogutma suyu sicakliginin ölçülmesi, suyun debisinin degistirilerek su sicakliginin kontrol edilmesidir. Bu farklilik sayesinde EGR sistemi daha verimli çalismakta, sogutma suyunun asiri isinmasi ve kaynamasindan kaynakli EGR sistem arizalari ve motor arizalari Önlenmektedir. United States patent numbered US7380544, which is in the state of the art In the document, an EGR system with two cooling systems is used. is mentioned. Cooling systems run sequentially along the exhaust pipe. is placed. In the structure described in the said patent document, cooling controlling the temperature of the water, changing the cooling water flow 8343,594 is not disclosed. The invention subject to application with the patent document in question The most obvious difference between the measurement of the cooling water temperature, the flow rate of the water is to control the water temperature by changing it. Thanks to this difference, EGR system works more efficiently, overheating of the cooling water and EGR system malfunctions and engine malfunctions caused by boiling are prevented.
Teknigin bilinen durumunda yer alan bir diger U86244256 sayili Birlesik Devletler patent dokümaninda, ikinci bir sogutma sistemi bulunan bir EGR sisteminden bahsedilmektedir. Her bir sogutma sisteminin ayri radyatörü bulunmasi sayesinde daha fazla sogutma saglanmaktadir. Söz konusu patent dokümaninda sogutma suyunun sicakliginin kontrol edilmesi, su sicakliginin sogutma suyu debisinin degistirilerek kontrol edilmesine iliskin bir açiklama yer almamaktadir. Söz konusu patent dokümani ile basvuru konusu bulus arasindaki en bariz fark sogutma suyu sicakliginin ölçülerek, suyun debisinin degistirilerek su sicakliginin kontrol edilmesidir. Another one in the state of the art is the United States U86244256 States patent document an EGR with a second cooling system system is mentioned. Separate radiator of each cooling system Thanks to its presence, more cooling is provided. The patent in question Checking the temperature of the cooling water in the document There is a description of controlling the coolant flow rate by changing it. does not receive. The difference between the patent document in question and the invention that is the subject of the application. The most obvious difference is by measuring the cooling water temperature and changing the water flow. water temperature control.
Mevcut uygulamalarda, EGR sogutma suyu debisinin, su sicakligina göre kontrol edilmesini saglayan bir sistem ve kontrol yöntemi bulunmamaktadir. Sogutma suyu sicakliginin kontrol edilmesi sayesinde birçok ariza önlenmektedir. In current applications, the EGR cooling water flow is controlled according to the water temperature. There is no system and control method that ensures that Cooling Many malfunctions are prevented by controlling the water temperature.
Bulusun Amaçlari Bu bulusun amaci, EGR sisteminde kullanilan sogutma suyu sicakligini tercih edilen aralikta tutan bir EGR sogutma sistemi ve yöntemi gerçeklestirmektir. Objectives of the Invention The aim of this invention is to choose the coolant temperature used in the EGR system. It is to implement an EGR cooling system and method that keeps it within the specified range.
Bu bulusun diger amaci, EGR sisteminde kullanilan sogutma suyu sicakligini, suyun debisini degistirerek kontrol eden bir EGR sogutma sistemi ve yöntemi gerçeklestirmektir. 8343.594 Bu bulusun bir diger amaci, sogutma suyu kaynamasindan dolayi çikan EGR sistem arizalari ve motor arizalarini engelleyen bir EGR sogutma sistemi ve yöntemi gerçeklestirmektir. The other purpose of this invention is the temperature of the coolant used in the EGR system, an EGR cooling system and method that controls the flow of water by changing it is to perform. 8343,594 Another object of this invention is the EGR output due to boiling of cooling water. an EGR cooling system that prevents system and engine malfunctions, and to implement the method.
Bulusun Kisa Açiklamasi Bu bulusun amacina ulasmak için gerçeklestirilen ilk istem ve bu isteme bagli diger istemlerde EGR sogutma sistemi ve yöntemi ile EGR sistemi içerisinde kullanilan sogutma suyunun sicakligi ve debisi kontrol altina alinir. Brief Description of the Invention The first request made to achieve the purpose of this invention and depending on this request within the EGR cooling system and method and the EGR system in other claims The temperature and flow rate of the used cooling water are taken under control.
EGR sogutma sistemi, EGR sogutucu içerisinde bulunan sogutma sivisinin sicaklik degerine göre sistem içerisinde kullanilacak sogutma sivisi debisini degistirerek çalisir. EGR sogutma sistemi sogutma sivisinin sicakligini, sogutma sivisinin debisini degistirerek kontrol ederek. Bunun içinde radyatör disinda ikincil bir sivi tanki kullanilir. ikincil tank içerisinde bulunan sogutma sivisi, sogutucu içerisinde bulunan sogutma sivisinin sicakligina göre devreye alinir.The EGR cooling system is the cooling liquid in the EGR cooler. The coolant flow rate to be used in the system according to the temperature value. works by changing. EGR cooling system coolant temperature, cooling by controlling it by changing the flow rate of the liquid. Except for the radiator a secondary liquid tank is used. coolant in the secondary tank, It is activated according to the temperature of the cooling liquid in the cooler.
Eger ki sogutma sivisinin sicakligi çok artmissa ikincil tankta bulunan sivi sisteme dahil edilerek sogutma sivisinin debisi arttirilir ve sogutma sivisinin asiri isinmasi engellenir. Böylece EGR sistemi iki farkli kaynaktan saglanan sogutma sivilari ile daha verimli çalisir ve daha etkili sogutma saglanir. If the temperature of the coolant is too high, the liquid system in the secondary tank by incorporating it, the flow rate of the coolant is increased and the overheating of the coolant is is blocked. Thus, the EGR system is combined with cooling fluids from two different sources. works more efficiently and provides more effective cooling.
Bulusun Ayrintili Açiklamasi Bu bulusun amacina ulasmak için gerçeklestirilen EGR sogutma sistemi ve yöntemi ekli sekilde gösterilmis olup bu sekil; Sekil 1. EGR sogutma sisteminin sematik görünüsüdür. Detailed Description of the Invention To achieve the aim of this invention, the EGR cooling system and method is shown in the attached figure and this figure; Figure 1. The schematic view of the EGR cooling system.
Sekil 2. EGR sogutma yönteminin akis semasinin görünüsüdür. Figure 2. The flow chart view of the EGR cooling method.
Sekillerdeki parçalar tek tek numaralandirilmis olup, bu numaralarin karsiligi asagida verilmistir. 8343.594 EGR sogutma sistemi EGR valfi EGR sogutucu Radyatör Su pompasi Ikinci] tank Ikincil pompa Debi kontrol valfi Geri dönüs valfi . Sicaklik sensörü 11. Kontrol ünitesi EG: Egzoz manifoldu EM: Emme manifoldu 100. EGR sogutma yöntemi Araçlarin EGR sisteminde kullanilan sogutma sivisinin sicakligini tercih edilen sicaklik araliginda tutmayi saglayan, sogutma sivisi sicakligi tercih edilen sicaklik araligi disina çiktiginda sivinin debisini degistiren bir EGR sogutma sistemi (1); - egzoz manifoldundan (EG) egzoz gazi alinmasini saglayan en az bir EGR - egzoz gazini sogutan en az bir EGR sogutucu (3), - sogutma için kullanilan sivinin alindigi en az bir radyatör (4), - radyatördeki (4) siviyi tercihen suyu EGR sogutucusuna (3) basan en az bir su pompasi (5), - radyatörden (4) bagimsiz olarak sogutma sivisinin depolandigi en az bir ikincil - ikincil tankta (6) bulunan siviyi EGR sogutucusuna (3) basan en az bir ikincil - sogutma sivisinin sicakligina göre EGR sogutucusuna (3) ilave sogutma sivisi göndererek sogutma sivisinin debisini arttiran debi kontrol valfi (8) içerir. 8343.594 Bulus konusu EGR sogutma sistemi (1) sayesinde, motorda (M) gerçeklesen yanma sonucu ortaya çikan egzoz gazi, egzoz manifoldundan (EG) alinarak bir sogutmaya tabi tutulur ve emme manifoldu (EM) üzerinden yanma havasina karistirilarak yeniden yanmaya dahil edilir. EGR sogutma sisteminde (l), egzoz gazi tercihen egzoz manifoldundan (EG) alinir. Egzoz manifoldu (EG) üzerinde tercihen en az bir gaz çikisi bulunur ve bu gaz çikisi EGR valfi (2) ile kontrol edilir. EGR valfi (2) açilarak, egzoz manifoldunda (EG) bulunan egzoz gazinin EGR sogutma sistemine (l) dahil edilmesi saglanir. Benzer sekilde EGR valfi (2) kapatilarak egzoz manifoldunda (EG) bulunan gazin EGR sogutma sistemine (1) dahil edilmesi engellenir. The parts in the figures are numbered one by one and the corresponding numbers are given below. 8343,594 EGR cooling system EGR valve EGR cooler Radiator Water pump Second] tank secondary pump flow control valve return valve . temperature sensor 11. Control unit EG: Exhaust manifold EM: Intake manifold 100. EGR cooling method The preferred temperature of the coolant used in the EGR system of the vehicles. the preferred temperature of the coolant, which keeps it in the temperature range an EGR cooling system (1) that changes the flow rate of the liquid when it goes out of range; - at least one EGR that allows exhaust gas to be drawn from the exhaust manifold (EG) - at least one EGR cooler (3) cooling the exhaust gas, - at least one radiator (4) from which the liquid used for cooling is taken, - at least one water pumping the liquid from the radiator (4) preferably the water to the EGR cooler (3) pump (5), - at least one secondary coolant is stored independently of the radiator (4) - at least one secondary pumping the liquid in the secondary tank (6) to the EGR cooler (3) - additional coolant to the EGR cooler (3) according to the temperature of the coolant It includes a flow control valve (8), which increases the flow rate of the coolant by sending 8343,594 Thanks to the EGR cooling system (1), which is the subject of the invention, the motor (M) The exhaust gas resulting from combustion is taken from the exhaust manifold (EG) and a It is cooled and fed to the combustion air via the intake manifold (EM). is mixed and included in the combustion again. In the EGR cooling system (l), exhaust gas is preferably taken from the exhaust manifold (EG). On the exhaust manifold (EG) preferably there is at least one gas outlet and this gas outlet is controlled by the EGR valve (2) is done. By opening the EGR valve (2), the exhaust gas in the exhaust manifold (EG) It is provided to be included in the EGR cooling system (l). Similarly, the EGR valve (2) by turning off the gas in the exhaust manifold (EG) to the EGR cooling system (1) inclusion is prohibited.
Bulusun tercih edilen uygulamasinda, EGR valfi (2) ile egzoz manifoldunda (EG) bulunan gaz, EGR sogutucusuna (3) yönlendirilir. EGR sogutucu (3), egzoz gazini sogutma sivisi yardimi ile sogutur. Bulusun tercih edilen uygulamasinda EGR sogutucu (3) içerisinden egzoz gazinin geçtigi sogutma tüpleri içerir. Egzoz manifoldundan (EG) alinan egzoz gazi söz konusu sogutma tüplerinden geçer ve sogutma tüpleri de sogutma sivisi ile sogutulur. Bulusun tercih edilen uygulamasinda sogutma sivisi olarak su, antifriz gibi sivilar kullanilir. In the preferred embodiment of the invention, the EGR valve (2) and the exhaust manifold (EG) The found gas is directed to the EGR cooler (3). EGR cooler (3), exhaust gas cools with the help of coolant. EGR in the preferred embodiment of the invention The cooler (3) contains cooling tubes through which the exhaust gas passes. Exhaust The exhaust gas from the manifold (EG) passes through the said cooling tubes and cooling tubes are also cooled with coolant. Invention preferred In the application, liquids such as water and antifreeze are used as cooling liquid.
EGR sogutucu (3) üzerinde tercihen en az bir egzoz gazi girisi, egzoz gazi çikisi ve en az bir sogutucu sivisi girisi bulunur. Bulusun tercih edilen uygulamasinda, EGR sogutucu (3) üzerinde tercihen birbirinden bagimsiz iki adet sogutucu sivi girisi bulunur. Preferably at least one exhaust gas inlet, exhaust gas outlet on the EGR cooler (3) and at least one coolant inlet. In the preferred embodiment of the invention, Two cooling liquids, preferably independent of each other, on the EGR cooler (3) has an entry.
Bulusun alternatif bir uygulamasinda sogutma sivilari EGR sogutucuya (3) girmeden önce birlesirler. Bu uygulamada, EGR sogutucunun (3) tek sogutma sivisi girisi bulunur. 8343.594 EGR sogutucu (3) sivi girislerinden bir tanesi radyatör (4) hattina baglidir.In an alternative embodiment of the invention, the cooling fluids are fed to the EGR cooler (3). they merge before entering. In this application, the EGR cooler (3) has only one cooling system. There is a liquid inlet. 8343,594 One of the EGR cooler (3) liquid inlets is connected to the radiator (4) line.
Radyatörde (4) bulunan sogutma sivisi, su pompasi (5) araciligi ile EGR sogutucuya (3) aktarilir. Sogutma sivisi tercihen öncelikli olarak radyatörden (4) alinir. Radyatörden (4) alinan sogutma sivisi ile EGR sogutucunun (3) sogutulmasina baslanir. Sogutma sivisi çok fazla isinana kadar radyatörde (4) bulunan sivi ile sogutma yapilir. Coolant in radiator (4), EGR via water pump (5) transferred to the cooler (3). Coolant preferably primarily from the radiator (4) is taken. EGR cooler (3) with coolant taken from the radiator (4) cooling is started. in the radiator (4) until the coolant gets too hot. Cooling is done with the liquid found.
EGR sogutucu (3) sivi girislerinden radyatöre (4) bagli olmayan girise ikincil tank (6) baglidir. Ikincil tank (6), radyatörden (4) bagimsiz sogutma sivisi saglar.Secondary tank from the liquid inlets of the EGR cooler (3) to the inlet not connected to the radiator (4) (6) is connected. The secondary tank (6) supplies coolant independently from the radiator (4).
Ikincil tankin (6) hacmi sogutma kapasitesi, motor tipi ve büyüklügüne göre degisiklik gösterebilir. Ikincil tankta (6) sogutma sivisi olarak tercihen su kullanilir. Ikincil tankta (6) bulunan sogutma sivisinin EGR sogutucuya (3) aktarilmasi ikincil pompa (7) ile saglanir. Ikinci] pompa (7) tercihen dogrudan ikincil tanka (6) baglidir ve sogutma için ilave siviya ihtiyaç duyuldugunda devreye girerek EGR sogutucuya (3) tercihen su pompalar. Ikincil tank (6) ve ikinci] pompa (7) tercihen ayri bir hat ile EGR sogutucuya (3) baglidir. The volume of the secondary tank (6) depends on the cooling capacity, engine type and size. may vary. Preferably water as coolant in the secondary tank (6) used. EGR of the coolant in the secondary tank (6) to the cooler (3) transfer is provided by the secondary pump (7). The second] pump (7) is preferably directly it is connected to the secondary tank (6) and when additional liquid is needed for cooling activated, it preferably pumps water to the EGR cooler (3). Secondary tank (6) and The second] pump (7) is preferably connected to the EGR cooler (3) with a separate line.
Bulusun tercih edilen uygulamasinda, ikincil tank (6) ile EGR sogutucu (3) arasinda debi kontrol valfi (8) bulunur. Debi kontrol valfi (8), ikincil tankta (6) bulunan sogutma sivisinin EGR sogutucusuna (3) geçisini kontrol eder. Debi kontrol valfi (8) tercihen oransal olarak çalisir ve farkli oranlarda sivi geçisine izin verir. Debi kontrol valfi (8) açildiginda ikincil tankta (6) bulunan sogutma sivisi EGR sogutucuya (3) aktarilir ve böylece EGR sogutucuda (3) bulunan sogutma sivisinin debisi arttirarak sogutma sivisinin isinmasi engellenir. In the preferred embodiment of the invention, the secondary tank (6) and the EGR cooler (3) between the flow control valve (8). Flow control valve (8), in secondary tank (6) It controls the passage of the coolant found in the EGR cooler (3). Flow The control valve (8) operates preferably proportionally and allows the passage of liquid at different rates. gives. When the flow control valve (8) is opened, the coolant in the secondary tank (6) The EGR is transferred to the cooler (3) and thus the cooling present in the EGR cooler (3) By increasing the flow rate of the liquid, the heating of the coolant is prevented.
Ikinci] tankta (6) bulunan sogutma sivisi, EGR sogutucuda (3) kullanildiktan sonra EGR sogutucusunun (3) çikis hattindan çikarak geri dönüs valfinin (9) açik- kapali pozisyonuna göre yeniden ikincil tanka (6) gelir. Böylece sogutma sivisi kapali bir döngü gerçeklestirir, EGR sogutucusunda (3) bulunan sogutma sivisinin debisi arttirdiktan sonra yeniden ikincil tankta (6) depolanir. Geri dönüs valfi (9), 8343.594 EGR sogutucu (3) ile ikincil tank (6) arasindaki hatti açip kapatarak, sogutma sivisinin kapali devre döngüsünü tamamlamasini saglar. After the coolant in the second] tank (6) is used in the EGR cooler (3) then it comes out from the outlet line of the EGR cooler (3) to open the return valve (9). it comes back to the secondary tank (6) according to its closed position. Thus, the coolant performs a closed cycle, the coolant in the EGR cooler (3) After increasing the flow, it is stored again in the secondary tank (6). return valve (9), 8343,594 By opening and closing the line between the EGR cooler (3) and the secondary tank (6), the cooling It allows the liquid to complete the closed circuit loop.
Bulus konusu EGR sogutma sistemi (1) en az bir sicaklik sensörü (10) içerir.The subject of the invention EGR cooling system (1) includes at least one temperature sensor (10).
Bulusun tercih edilen uygulamasinda sicaklik sensörü (10), EGR sogutucuda (3) veya EGR sogutucu (3) çikisinda bulunur. Sicaklik sensörü (10) ile EGR sogutucuda (3) ve sogutucu (3) çikisinda bulunan sogutma sivisinin sicakligi ölçülür. Sicaklik sensörü (10) sürekli olarak sicaklik degerini ölçer ve bu veriyi kablolu veya kablosuz olarak iletir. In the preferred embodiment of the invention, the temperature sensor (10) is in the EGR cooler (3) or EGR cooler (3) outlet. EGR with temperature sensor (10) the temperature of the coolant in the cooler (3) and at the cooler (3) outlet is measured. The temperature sensor (10) continuously measures the temperature value and records this data. transmits wired or wirelessly.
Bulus konusu EGR sogutma sistemi (1) tercihen en az bir kontrol ünitesi (11) içerir. Kontrol ünitesi (11) egzoz gazi alinmasini ve egzoz gazinin sogutulmasi Sürecini kontrol eder. Kontrol ünitesi (11) egzoz gazinin sogutulmasi sirasinda EGR valfini (2), su pompasini (5), ikincil pompayi (7), debi kontrol valfini (8) ve geri dönüs valfini (9) açip kapatarak sogutmanin maksimum verimde ve tercih edilen sogutma sivisi sicakligi araliginda olmasini saglar. Kontrol ünitesi (11), sicaklik sensöründen (10) aldigi sogutma sivisi sicaklik degerine göre, sogutma sivisi debisini kontrol etmek için uyarlanmistir. Kontrol ünitesi (11) sogutma sivisi sicaklik degerine göre ikincil tankta (6) bulunan siviyi EGR sogutucusuna (3) aktararak, sogutucu (3) içerisinde bulunan sogutma sivisinin debisini arttirir.The subject of the invention is the EGR cooling system (1), preferably at least one control unit (11) includes. The control unit (11) provides exhaust gas intake and cooling of the exhaust gas. Controls the process. Control unit (11) during cooling of exhaust gas EGR valve (2), water pump (5), secondary pump (7), flow control valve (8), and By opening and closing the return valve (9), the cooling is ensured at maximum efficiency and preference. ensures that the coolant temperature is in the range. Control unit (11), According to the temperature value of the coolant received from the temperature sensor (10), the cooling It is adapted to control the liquid flow rate. Control unit (11) cooling According to the liquid temperature value, the liquid in the secondary tank (6) is sent to the EGR cooler. (3), it increases the flow of the coolant contained in the cooler (3).
Kontrol ünitesi (11), sogutma sivisi sicakligi tercih edilen degerleri geçtiginde ikincil pompayi (7) çalistirmak ve debi kontrol valfini (8) açmak için uyarlanmistir. Kontrol ünitesi (1 l) sogutma sivisi sicakligi tercih edilen degerlere ulastiginda geri dönüs valfini (9) açarak EGR sogutucuya (3) aktardigi sogutma sivisini yeniden ikincil tanka (6) aktarir. Control unit (11), when the coolant temperature exceeds the preferred values to start the secondary pump (7) and open the flow control valve (8) has been adapted. Control unit (1 l) coolant temperature adjusted to preferred values reaches the EGR cooler (3) by opening the return valve (9). transfers its liquid back to the secondary tank (6).
EGR sogutma sistemi (1), EGR sogutucu (3) içerisinde bulunan sogutma sivisinin sicakligi tercih edilen aralikta kalacak sekilde çalisir. EGR sogutma sistemi (1) sogutma sivisinin sicakligini, sogutma sivisinin debisini kontrol ederek saglar.The EGR cooling system (1) is the coolant in the EGR cooler (3). It works in such a way that the temperature remains in the preferred range. EGR cooling system (1) It provides the temperature of the coolant by controlling the flow of the coolant.
Bunun içinde ikincil tank (6) ile sisteme (l) ilave sogutma sivisi saglanir. Ikincil tank (6) içerisinde bulunan sogutma sivisinin aktarilmasi ikincil pompa (7) ile 8343.594 saglanir. Ikincil pompa (7) tercihen bir tahrik motoruna sahiptir ve böylece sivinin aktarilmasi için gerekli gücü saglar. Ikincil tankta (6) bulunan sivinin EGR sogutucuya (3) aktarilmasi için debi kontrol valfi (8) açilir. Böylece ikincil pompanin (7) bastigi sivi EGR sogutucuya (3) aktarilir ve EGR sogutucu (3) içerisinde bulunan sogutma sivinin debisi arttirilir. Sogutma sivisi sicakligi tercih edilen sicaklik degerine düstügünde, geri dönüs valfi (9) açilir ve sisteme (l) ilave edilen sogutma sivisi yeniden ikincil tanka (6) dolar. Böylece EGR sogutma sistemi (1) farkli iki sogutma sivisindan alinan sivi ile sogutulur. In this, additional cooling liquid is supplied to the system (l) with the secondary tank (6). Secondary The transfer of the coolant in the tank (6) is via the secondary pump (7). 8343,594 is provided. The secondary pump (7) preferably has a drive motor so that the liquid It provides the necessary power to transfer. EGR of the liquid in the secondary tank (6) The flow control valve (8) is opened to transfer it to the cooler (3). Thus, secondary The liquid pumped by the pump (7) is transferred to the EGR cooler (3) and the EGR cooler (3) The flow rate of the cooling liquid in it is increased. Coolant temperature preference When the temperature drops to the specified temperature value, the return valve (9) opens and additional (l) is added to the system. The extracted coolant is recharged into the secondary tank (6). So EGR cooling system (1) is cooled with the liquid taken from two different cooling liquids.
Bulus konusu EGR sogutma yöntemi ( içerisinde bulunan sogutma sivisinin sicakligi, sivinin debisi kontrol edilerek ayarlanir.The subject of the invention is the EGR cooling method (in The temperature of the coolant found is adjusted by controlling the flow rate of the liquid.
Böylece sogutma sivisinin sicak degeri kontrol altinda tutularak bir sogutma yapilir. Thus, a cooling system is maintained by keeping the hot value of the coolant under control. makes.
Sogutma sivisi sicaklik degerine göre sogutma sivisinin debisini degistirerek sogutma sivisi sicakligini kontrol altinda tutan EGR sogutma yöntemi (100). sogutma sivisinin sicakliginin ölçülmesi (101), - sicaklik degerine göre ikincil pompanin (7) çalistirilmasi (102), - sicaklik degerine göre debi kontrol valfinin (8) açilmasi (103), - EGR sogutucu (3) içerisine radyatörden (4) farkli bir kaynaktan ilave sogutma sivisi aktarilmasi (104), - EGR sogutucu (3) içerisinde bulunan sogutma sivisinin debisinin degistirilmesi (105), - sogutma sivisinin sicaklik degerinin düsürülmesi (106), - geri dönüs valfinin (9) açilmasi (107), - ilave sogutma sivisinin yeniden ikincil tanka (6) aktarilmasi (108) adimlarini EGR sogutma yöntemi (100) ile sogutma sivisi sicaklik degerine göre sogutma sivisinin debisi degistirilir ve böylece sogutma sivisi sicakligini kontrol altinda 8343.594 Sicaklik sensörü tarafindan sogutma sivisinin sicakliginin ölçülür (101). Sogutma sivisi sicakliginin kaynama degerine yaklasmasi istenmez. Sogutma sivisi sicakligi yükselmis ise kaynama degerine yaklasilmis ise sicaklik degerine göre ikincil pompanm (7) çalistirilir (102). Ayni zamanda, debi kontrol valfi (8) açilir ( farkli bir kaynaktan ilave sogutma sivisi aktarilir (104). By changing the flow rate of the coolant according to the coolant temperature value EGR cooling method (100) that keeps the coolant temperature under control. measuring the temperature of the coolant (101), - operation of the secondary pump (7) according to the temperature value (102), - opening (103) of the flow control valve (8) according to the temperature value, - Additional cooling into the EGR cooler (3) from a different source than the radiator (4) fluid transfer (104), - The flow rate of the coolant in the EGR cooler (3) replacement (105), - lowering the temperature of the coolant (106), - opening of the return valve (9) (107), - the steps of transferring the additional coolant back to the secondary tank (6) (108) Cooling according to the coolant temperature value with the EGR cooling method (100) the flow rate of the liquid is changed, thus keeping the coolant temperature under control. 8343,594 The temperature of the coolant is measured by the temperature sensor (101). Cooling It is undesirable for the temperature of the liquid to approach the boiling value. coolant If the temperature is increased, if the boiling value is approached, according to the temperature value the secondary pump (7) is started (102). At the same time, the flow control valve (8) opens. ( different one Additional coolant is transferred from the source (104).
EGR sogutucu (3) içerisine ilave kaynaktan sogutma sivisi aktarilarak, EGR sogutucu (3) içerisinde bulunan sogutma sivisinin debisinin degistirilir (105).By transferring the coolant from the additional source into the EGR cooler (3), the EGR The flow rate of the cooling liquid in the cooler (3) is changed (105).
Sogutma sivisinin sicaklik degerinin düsürülür (106). Sogutma sivisi sicaklik degeri tercih edilen sicaklik araligina düstügünde artik ilave sogutma sivisina ihtiyaç kalmaz. Ilave sogutma sivisinin geri çekilmesi için geri dönüs valfi (9) açilir (107). Böylece ilave sogutma sivisinin kapali devre sirkülasyonunu tamamlar ve yeniden ikincil tanka (6) aktarilir (108). The temperature value of the coolant is lowered (106). coolant temperature When the value falls within the preferred temperature range, additional coolant is added. there will be no need. Return valve (9) for withdrawal of additional coolant opens (107). Thus, closed-circuit circulation of the additional coolant it completes and is transferred back to the secondary tank (6) (108).
EGR sogutma yöntemi ( içerisinde bulunan sogutma sivisi sicakligi sürekli kontrol altinda tutulur. Sogutma sivisi sicakligi arttiginda ve tehlike olusturacak seviyelere geldiginde radyatör (4) disinda bir sogutma sivisi kaynagindan ilave sogutma sivisi saglanarak, sogutma sivisinin debisi arttirilir. Böylece sogutma sivisinin debisinin arttirilip azaltildigi bir sogutma yöntemi (100) ile sogutma saglanir. sogutma sivisinin sicakliginin ölçülmesi sicaklik degerine göre ikincil pompanin (7) çalistirilmasi sicaklik degerine göre debi kontrol valfinin (8) açilmasi radyatörden (4) farkli bir kaynaktan ilave sogutma sivisi aktarilmasi sogutma sivisinin debisinin degistirilmesi sogutma sivisinin sicaklik degerinin düsürülmesi geri dönüs valfinin (9) açilmasi ilave sogutma sivisinin yeniden ikincil tanka (6) aktarilmasi EGR cooling method ( found in The coolant temperature is kept under constant control. coolant temperature When it rises and reaches dangerous levels, a place other than the radiator (4) By providing additional coolant from the coolant source, the coolant flow rate is increased. Thus, a system where the flow rate of the coolant is increased or decreased. Cooling is provided by the cooling method (100). measuring the temperature of the coolant operation of the secondary pump (7) according to the temperature value Opening the flow control valve (8) according to the temperature value transferring additional coolant from a different source to the radiator (4) changing the flow rate of the coolant lowering the temperature of the coolant opening the return valve (9) re-transferring the additional coolant to the secondary tank (6)
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| PCT/TR2016/050238 WO2017018957A1 (en) | 2015-07-27 | 2016-07-27 | Egr cooling system and method |
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| US6244256B1 (en) | 1999-10-07 | 2001-06-12 | Behr Gmbh & Co. | High-temperature coolant loop for cooled exhaust gas recirculation for internal combustion engines |
| US7380544B2 (en) | 2006-05-19 | 2008-06-03 | Modine Manufacturing Company | EGR cooler with dual coolant loop |
| SE532245C2 (en) * | 2008-04-18 | 2009-11-24 | Scania Cv Ab | Cooling arrangement of a supercharged internal combustion engine |
| GB2493741B (en) * | 2011-08-17 | 2017-02-22 | Gm Global Tech Operations Llc | Exhaust gas recirculation system for an internal combustion engine |
| JP2013256936A (en) * | 2012-05-16 | 2013-12-26 | Denso Corp | Exhaust recirculating device |
| FR3002285B1 (en) * | 2013-02-20 | 2015-02-20 | Renault Sa | EXHAUST GAS HEAT RECOVERY SYSTEM IN AN INTERNAL COMBUSTION ENGINE, WITH TWO HEAT EXCHANGERS AT A GAS RECIRCULATION CIRCUIT |
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| Publication number | Publication date |
|---|---|
| WO2017018957A1 (en) | 2017-02-02 |
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