JPS5859345A - Exhaust gas recirculating device for diesel engine - Google Patents
Exhaust gas recirculating device for diesel engineInfo
- Publication number
- JPS5859345A JPS5859345A JP56157868A JP15786881A JPS5859345A JP S5859345 A JPS5859345 A JP S5859345A JP 56157868 A JP56157868 A JP 56157868A JP 15786881 A JP15786881 A JP 15786881A JP S5859345 A JPS5859345 A JP S5859345A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- gas recirculation
- exhaust
- pressure
- passage
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
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
- F02M26/59—Systems for actuating EGR valves using positive pressure actuators; Check valves therefor
-
- 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
- F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
- F02M26/15—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system in relation to engine exhaust purifying apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
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)
- Processes For Solid Components From Exhaust (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、自動車等の車輌に□用いられるディーゼルエ
ンジンの排気ガス再循環装置に係り、更に詳細には排気
通路の途中に排気ガス中の粒子を捕集する粒子捕集器を
―えたディーゼルエンジンの排気ガス再循環装置に係る
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an exhaust gas recirculation device for a diesel engine used in vehicles such as automobiles. This relates to an exhaust gas recirculation system for diesel engines equipped with a collector.
ディーゼルエンジンに於て、ディーゼルエンジン、より
排出される排気ガス中のＮＯｘを低減するために、排気
ガスの一部を吸気系へ連流させる排−ガス再循環部属は
、排気通路に設けらけた排気ガス取入ポートよら吸気通
路に設けられた排気ガス注入ボートへ排気ガスを導く排
気ガス再循環通路と、前記排気ガス再憾−通路を流れる
排気ガスの１ｍｌを制御する排気ガス再慟職刺御弁とを
有している。上述の蛸き排気ガス再−環装置に於ける再
循環排気ガス流鏝は、排気ガス取入ポートに於ける排気
ガス圧と排気ガス注入ボートに於ける吸気圧との圧力差
と、排気ガス再ＩＩＩ制御弁の開弁―により決まる。こ
のため排気ガス再循環−−弁の一度（開弁■）が一定で
あっても排気ガス圧が上昇すると、それに伴い再循環排
気ガス流−が増大する゛。In a diesel engine, in order to reduce NOx in the exhaust gas emitted by the diesel engine, an exhaust gas recirculation part is installed in the exhaust passage to connect a part of the exhaust gas to the intake system. An exhaust gas recirculation passage that guides exhaust gas from the exhaust gas intake port to an exhaust gas injection boat provided in the intake passage, and an exhaust gas recirculation passage that controls 1 ml of exhaust gas flowing through the exhaust gas recirculation passage. It has a goben. The recirculating exhaust gas flow iron in the above-mentioned octopus exhaust gas recirculation system is based on the pressure difference between the exhaust gas pressure at the exhaust gas intake port and the intake pressure at the exhaust gas injection boat, and the exhaust gas flow. Determined by the opening of the Re-III control valve. Therefore, even if the exhaust gas recirculation--the valve opening time (opening 2) is constant--if the exhaust gas pressure increases, the recirculated exhaust gas flow increases accordingly.
ところで、車輌用ディーゼルエンジンに於ては、これよ
り排出される排気ガス中の炭素粒子の如き粒子を捕集し
、これが大気中へ放出されることを防止する粒子層ＩＩ
Ｉが排気通路の途中に設けられているものがある。この
粒子捕集ａは、−曽に、フィルタ構造を有し、捕集した
粒子の曇が増大するに従ってそのフィルタ構造が詰り、
これに応じてこれより上流側に於ける排隼通路の排気ガ
ス圧が上昇するようになる。By the way, in a diesel engine for a vehicle, a particle layer II is used to collect particles such as carbon particles in the exhaust gas emitted from the engine and prevent them from being released into the atmosphere.
Some have I installed in the middle of the exhaust passage. This particle collection a first has a filter structure, and as the cloudiness of the collected particles increases, the filter structure becomes clogged;
Correspondingly, the exhaust gas pressure in the falcon exhaust passage on the upstream side increases.
排気ガス再循環のための排気ガス取入ポートは、排気ガ
ス再４１１１１のために必要な再循環排気ガス流―が得
られるよう、一般に、粒子捕集−より上流側の排気通路
にＩｌｌけられ、このため粒子層ＩＩＩＩの詰りにより
これより上流側の排気通路に於ける排気ガス圧が上昇す
ると、それに伴い前記−気ガス取入ポートに於ける排気
ガス圧が上昇し、粒子層ｍｉｓの詰り渡合の増大に応じ
て再＠■排気ガス流膳が増大する。この結果、排気ガス
再循環が過剰に行われ、エンジン性能に支障が生じるよ
う（なるこ乏がある。Exhaust gas intake ports for exhaust gas recirculation are generally located in the exhaust passageway upstream of the particle trap to provide the necessary recirculated exhaust gas flow for exhaust gas recirculation. Therefore, when the exhaust gas pressure in the exhaust passage upstream from this increases due to the clogging of the particle layer III, the exhaust gas pressure at the gas intake port increases accordingly, causing the particle layer mis to become clogged. As the flow rate increases, the flow rate of exhaust gas increases. This results in excessive exhaust gas recirculation, which may impair engine performance.
本発明は上述の如き不具合に轟み、粒子補集■の１１１
％慶化によるこれの詰りに、Ｌ Ｗ）排気１１ ＡハＩ
メ変動しても排気ガス再−環制御特性が夜勤しないよう
改良された排気ガス再偏環装置を鍵供することを目的と
している。The present invention was developed in response to the above-mentioned problems, and the particle collection method 111
Due to clogging of this due to % chlorination, L W) Exhaust 11
It is an object of the present invention to provide an improved exhaust gas recirculation device in which the exhaust gas recirculation control characteristics do not shift overtime even if the engine changes.
かかる目的は本１明によれば、排気通路の途中に排気ガ
ス中の粒子をｍ柴プる粒子層ＩＩ器を備えたディーゼル
エンジンの排気ガス再循環ｖ＆蹟にして、前記粒子ＷＩ
Ｉより上流側の排気通路に設けられた排気ガス取入ポー
トより吸気通路に設けられた排気ガス柱入ボートへ排気
ガスを導く排気ガス再循環通路と、鉤紀排気ガス再慟環
通路を流れる排気ガスのａｌｌｌを制御する排気ガス再
−ａｔｍ−弁と、前記粒子層＊ｓｉより上流側の排気通
路に於ける排気ガス圧の増大に応Ｕて前記排気ガス再循
環制御弁の一度を減少させる排気ガス圧補償手段とを有
していることを特徴とする排気ガス再働環装置によって
連成される。According to the present invention, this purpose is to recirculate the exhaust gas of a diesel engine equipped with a particle layer II device that pumps particles in the exhaust gas in the middle of the exhaust passage.
The exhaust gas flows through the exhaust gas recirculation passage, which leads the exhaust gas from the exhaust gas intake port provided in the exhaust passage upstream of I to the exhaust gas column boat provided in the intake passage, and the hook exhaust gas recirculation passage. an exhaust gas recirculation control valve that controls all of the exhaust gas, and an exhaust gas recirculation control valve that reduces the exhaust gas recirculation control valve in response to an increase in exhaust gas pressure in the exhaust passage upstream of the particle layer*si; The exhaust gas recirculation device is coupled with an exhaust gas recirculation device characterized in that it has an exhaust gas pressure compensating means.
以下に添付の＃！ＪＪＩｒ＊殖して本発明を実施例（つ
いて詳−に説明する。# attached below! Examples of the present invention will be described in detail below.
第１図は本発明による排気ガス再循環装置が組込まれた
ディーゼルエンジンを示す概略構成図である。図に於て
、１はディーゼルエンジンを示しており、該ディーゼル
エンジン猛犠気マニホールド２より空気を吸入し、また
１示されていない燃料噴射ポンプより燃料を噴射供給さ
れ、排気マニホールド３へ排気ガスを排出する。FIG. 1 is a schematic configuration diagram showing a diesel engine incorporating an exhaust gas recirculation device according to the present invention. In the figure, reference numeral 1 indicates a diesel engine, which takes in air from a sacrificial air manifold 2, is injected with fuel from a fuel injection pump (not shown), and sends exhaust gas to an exhaust manifold 3. discharge.
排気マニホールド３には排気管４、粒子捕集器５及び排
気管６が順に接続されている。An exhaust pipe 4, a particle collector 5, and an exhaust pipe 6 are connected to the exhaust manifold 3 in this order.
７は排気ガス再循環制御弁を示している。°排気ガス再
慟環＠御弁７はその入口ボート８を導管９を経て排気マ
ニホールド３に段重すられた排気ｉス取入ボート１０に
接続され、また出口ボート１１を聯！１２を経て吸気７
ニホールド２４：段重すられた排気ガス注入ボート１３
に接続されている。排気ガス再循環制御弁７は弁襞皐１
４を含み、類弁ＩＩ素１４は弁Ｊ！！部１５と共働して
入口ボート８を■閉し、またその実効開口ＥＩｉ積を制
御して人［１ボート８より出口ポート１１へ流れる排気
ガスの流―を計−制御するようになっている。弁負蟻１
４は弁ロッド１６によ−）Ｉダイヤフラム装置１７に連
結され、該ダイヤフラムｌｌ＆ｗ＆：よって−−６れ５
−
るようになっている。ダイヤフラム＠８１７は二連式ダ
イヤフラム装置として構成され、二枚のダイヤフラム１
８．１９を含んでいる。ダイヤスラム１Ｂはその一方の
側に設けられたダイヤプラム！！２０＆−導入される内
圧の増大に応じて圧縮コイル′ばね２１の作用に抗すて
図にて右方へ駆動され、前記弁要素１４を■弁方向へ一
１１！＋するようになっている。ダイヤスラム１８の他
方の側に設けられたダイヤプラム室２２は大気中に■故
されている。7 indicates an exhaust gas recirculation control valve. °The exhaust gas recirculation ring@control valve 7 has its inlet boat 8 connected to the exhaust intake boat 10 layered in the exhaust manifold 3 via a conduit 9, and also to the outlet boat 11! Intake 7 via 12
Nifold 24: Tiered exhaust gas injection boat 13
It is connected to the. The exhaust gas recirculation control valve 7 has a valve fold 1
4, and similar valve II element 14 is valve J! ! 15 to close the inlet boat 8 and control its effective opening EIi product to control the flow of exhaust gas flowing from the boat 8 to the outlet port 11. There is. Bengakuari 1
4 is connected by a valve rod 16 to a diaphragm device 17, said diaphragm ll&w&: thus--6re5
- It is now possible to Diaphragm@817 is configured as a double diaphragm device, with two diaphragms 1
Contains 8.19. Diamond slam 1B is a diamond plum installed on one side! ! 20&- In response to an increase in the introduced internal pressure, the compression coil' is driven to the right in the figure against the action of the spring 21, and the valve element 14 is moved in the direction of the valve. It is designed to be +. A diaphragm chamber 22 provided on the other side of the diaphragm 18 is exposed to the atmosphere.
またダイヤフラム１９はその一方の側に設けられたダイ
ヤスラム室２３に導入される正圧の増大に応じて圧縮コ
イルばね３２の作用−に抗して図にて左方５駆動され、
前記弁！Ｉｉ索１４を閉弁方向へ駆動するようになって
いる。ダイヤフラム１９の他方の側にＩＲけられたダイ
ヤフラム室２４は大気中に開放されている。Further, the diaphragm 19 is driven leftward 5 in the figure against the action of the compression coil spring 32 in response to an increase in the positive pressure introduced into the diaphragm chamber 23 provided on one side thereof.
Said valve! The Ii cable 14 is driven in the valve closing direction. On the other side of the diaphragm 19, an IR-enclosed diaphragm chamber 24 is open to the atmosphere.
ダイヤフラム室２０には負圧ポンプ２５が発生する内圧
が負圧嗣御弁２６によりその負圧を１１１節されつつ導
！２７を経て供給されるようになっている。負圧制御弁
２６＆ｔディーゼルエンジ１ン・１の６一
運転状態に応じて負圧を調節するようになつており、例
えばディーゼルエンジン１に供給する燃料の流層をｓｅ
ｔする燃料噴射ポンプのポンプレバーに応動し、ディー
ゼルエンジン１０負萄の増大に応じてダイヤフラム室２
０に与える負圧を小さくするようになっている。The internal pressure generated by the negative pressure pump 25 is guided to the diaphragm chamber 20 while being controlled by the negative pressure control valve 26! It is designed to be supplied via 27. The negative pressure control valve 26&t is adapted to adjust the negative pressure according to the operating condition of the diesel engine 1, and for example, it controls the flow layer of fuel supplied to the diesel engine 1.
The diaphragm chamber 2 responds to the pump lever of the fuel injection pump that moves, and the diaphragm chamber 2
It is designed to reduce the negative pressure applied to zero.
ダイヤフラム室２３には排気管４に設けられた排気ガス
圧取出ボート２８に現われる排気ガス圧、即ち粒子補集
Ｉ５より上流側の喚気通路に於ける排気ガス圧が導！！
２９を経て供給されるようになっている。The exhaust gas pressure appearing in the exhaust gas pressure take-off boat 28 provided in the exhaust pipe 4, that is, the exhaust gas pressure in the ventilation passage upstream of the particle collection I5 is introduced into the diaphragm chamber 23! !
It is supplied via 29.
上述の如き構成によれば、排気ガス内−環制御弁７の弁
要素１４がダイヤフラム室２０に：導入される負圧の増
大に応じて開弁方向へ駆動されると同時にダイヤフラム
室２３に導入される排気ガス圧の増大に応じて閉弁方向
へ駆動され、このためディーゼルエンジンの負殉を一定
とした場合、即ちダイヤプラム室２０に導入される負圧
を一定とした場合、排気ガス再循環制御弁７の排気ガス
圧の増大に応じて弁開度を減少するようになる。従って
、粒子捕集器５の経時変化による詰りにょプ、てこれよ
り上流側の排気通路にＭける排気ガス圧が増大すると、
それに伴い排気ガス再働ｌＩ＠御井７０１Ｉ度が減少し
、この排気ガス圧の増大仁よって過剰な排気ガス再働■
が行われることが＠遊され番。According to the configuration described above, the valve element 14 of the exhaust gas inner-ring control valve 7 is driven in the valve opening direction in response to an increase in the negative pressure introduced into the diaphragm chamber 20 and simultaneously introduced into the diaphragm chamber 23. The valve is driven in the closing direction in response to an increase in the exhaust gas pressure generated by the engine, and therefore, if the diesel engine's loss of life is constant, that is, if the negative pressure introduced into the diaphragm chamber 20 is constant, the exhaust gas is recirculated. As the exhaust gas pressure of the circulation control valve 7 increases, the valve opening degree is reduced. Therefore, when the particle collector 5 becomes clogged due to changes over time, the exhaust gas pressure in the exhaust passage upstream from this increases.
As a result, the exhaust gas rework lI @ Mii 701I degree decreases, and this increase in exhaust gas pressure causes excessive exhaust gas rework.
It is @played turn to be held.
尚、上述した寅１例に於ては、ディーゼルエンジン１の
１転数の増大に伴って排気ガス圧力が増大したときにも
排気ガス再循環制御弁７の開直が幽φし、このためエン
ジン１転数の増大に伴いＥＧＲ串が低下するようになる
。In the above-mentioned example, the opening of the exhaust gas recirculation control valve 7 is slow even when the exhaust gas pressure increases with the increase in the number of revolutions of the diesel engine 1. As the number of revolutions of the engine increases, the EGR skewer begins to decrease.
エンジン回転数の増大に伴ってＥＧＲ率が低下すること
は特に高速運転域に於番するＪｌｌｌｌｌ対端上好まし
いことではあるが、粒子Ｊｌｌｌｌｌｌｌの詰りによる
ＥＧＲ亭の変動を防止しっつＥＧ、Ｒ率がエンジン回転
数に対し貴−しないよう排気ガス再慟ｌＩｗ４御を行う
必要がある場合は、第２−に示されている如く、ダイヤ
プラム室２４が大気より遮断され、専管３０を軽て排気
管６に設けられた排気ガス圧取出ポート３１に接続門れ
ればよ”５ｓ。尚、この場合には圧縮」イルばね３２は
省略される。Although it is preferable that the EGR rate decreases as the engine speed increases, especially in high-speed operating ranges, it is important to prevent fluctuations in the EGR chamber due to clogging of particles. If it is necessary to control the exhaust gas so that the engine speed is not too high, the diaphragm chamber 24 is isolated from the atmosphere and the dedicated pipe 30 is lightened, as shown in No. 2-. It is only necessary to connect the exhaust gas pressure take-off port 31 provided in the exhaust pipe 6 for 5 seconds. In this case, the compression spring 32 is omitted.
かかる実施例に於ては、ダイヤフラム１９は粒子捕１！
１５より上流−の排気通路に於ける排気ガス圧と粒子捕
１１５より下流側の排気通路にｊｊＨｊる排気ガス圧と
の差圧によって因にて左方へ、即為
ち排気ガス再循環制御弁の閉弁方向へ駆動される。In such embodiments, the diaphragm 19 may be used as a particle trap 1!
Due to the differential pressure between the exhaust gas pressure in the exhaust passage upstream of the particle trap 115 and the exhaust gas pressure in the exhaust passage downstream of the particle trap 115, the exhaust gas recirculation control valve moves to the left. is driven in the valve closing direction.
前記差圧は粒子捕集器５の詰り度合が一定である場合、
エンジン回転数の変動に伴って排気ガス圧が変動しても
実質的に変化せず、このため排気ガス再循環制御弁７は
エンジン回転数が増大して排気ガス圧が上昇′しても閉
弁方向へ駆動されることがなく、粒子補集Ｉ５の詰り度
合の増大に応じてのみ前記差圧が増大することにより閉
弁方向へ駆動され、弁開度を修正して排気ガス圧の増大
に伴う再循環排気ガス流量の増大を補慣し、粒子捕集器
５が詰ったときに過剰な排気ガス再ａｍが行ねれること
を防止する。When the degree of clogging of the particle collector 5 is constant, the differential pressure is
Even if the exhaust gas pressure fluctuates as the engine speed fluctuates, the exhaust gas pressure does not substantially change, so the exhaust gas recirculation control valve 7 closes even when the engine speed increases and the exhaust gas pressure rises. It is not driven in the valve direction, but is driven in the valve closing direction by increasing the differential pressure only in accordance with the increase in the degree of clogging of the particle collector I5, and the exhaust gas pressure is increased by correcting the valve opening degree. This compensates for the increase in the flow rate of recirculated exhaust gas associated with this, and prevents excessive reaming of exhaust gas when the particle collector 5 becomes clogged.
以上に於ては本発明を実施例について詳報に説明したが
、本発明はこれに限定されるものではなく本発明の軛囲
内にて種々の実施例が可能である９−
ことは当業者にとつ゛（明らかであろう。In the above, the present invention has been described in detail with reference to embodiments, but the present invention is not limited thereto, and it will be appreciated by those skilled in the art that various embodiments can be made within the scope of the present invention. (It should be obvious.
゛第１ａＩ及び第２図は各々本発明による排気ガス再循
環Ｉ！−が組込まれたディーゼルエンジンの一つの実施
例を示す概略＠或凶である。
１・・・ディーゼルエンジン、２・・・嘘気マニ小−ル
ド、３・・・排気マニホールド、４・・・排気管、５・
・・粒子捕集器、６・・・排気管、７・・・排気ガス＃
Ｉ４＠ｓ制−弁、８・・・入口ボート、９・・・ｓｗ、
ｉｏ・・・排気ガス取入ボート、１１・・・出口ポート
、１２・・・導管、１３・・・排気ガス注入ボート、１
４・・・弁Ｉｌｌ １・５・・・弁座部、１６・・・
弁ロッド、１７・・・ダイヤフラム部属、１８．１９・
・・ダイヤフラム、２０・・・ダイヤフラム室、２１・
・・圧縮」イルばね、２２〜２４・・・ダイヤフラム室
、２５・・・負圧ポン１．２６・・・負圧制御弁、２７
・・・ｌｉｌ、２８・・・排気ガス圧取出ポート。
２９．３０・・・専管、３１・・・排気ガス圧取出ポー
ト。
３２・・・圧縮コイルばね
特許出願人 トヨタ自動串工秦株式会社代
理 人 弁護士 明 石 呂
毅１０−
し１面の浄書（内８１ン変史なしン 、第１図
第２図
（方 式）（自 発）
手続補正書・
昭和５６年１０月２９日
特許庁長官 島 １）轡 樹 殿
１、事件の表示 昭和５６年特許願第１５７８６８号２
、発明の名称
ディーゼルエンジンの排気ガス再循環輪重３、補正をす
る者
事件との関係 特許出願人
住 所 愛知県會田市トヨタ町１番地名 称 （３
２Ｇ ） トヨタ自動串工業株式会社代表者森田俊夫
４、代理人1aI and 2 respectively show exhaust gas recirculation I! according to the present invention! This is a schematic diagram showing one embodiment of a diesel engine in which - is incorporated. 1... Diesel engine, 2... Lie manifold, 3... Exhaust manifold, 4... Exhaust pipe, 5...
...Particle collector, 6...Exhaust pipe, 7...Exhaust gas #
I4@s control valve, 8... entrance boat, 9... sw,
io...Exhaust gas intake boat, 11...Outlet port, 12...Conduit, 13...Exhaust gas injection boat, 1
4...Valve Ill 1.5...Valve seat part, 16...
Valve rod, 17...Diaphragm part, 18.19.
...Diaphragm, 20...Diaphragm chamber, 21.
... Compression spring, 22-24... Diaphragm chamber, 25... Negative pressure pump 1.26... Negative pressure control valve, 27
...lil, 28...Exhaust gas pressure extraction port. 29.30...Specialized pipe, 31...Exhaust gas pressure extraction port. 32... Compression coil spring patent applicant Toyota Jido Kushiko Hata Co., Ltd.
10-page engraving (of which 81 pages are unaltered, Figure 1, Figure 2 (method) (self-motivated) Procedural amendment, October 29, 1980, Patent Office Director Shima 1) Shu Shu 1, Indication of the incident Patent Application No. 157868 of 1982 2
, Title of the invention: Diesel engine exhaust gas recirculation wheel load 3, Relationship with the case of the person making the amendment Patent applicant address: 1 Toyota-cho, Aida City, Aichi Prefecture Name (3)
2G) Toyota Automatic Kushi Industries Co., Ltd. Representative Toshio Morita 4, Agent
Claims (1)
集器を備えたディーゼルエンジンの排気ガス再循環＠胃
にして１、前記粒子捕集器より上流側の排気通路に設け
られた排気ガス取入ポートより吸気通路に設けられた排
気ガス注入ボートへ排気ガスを導く排気ガス再循環通路
と、前記排気ガス再循環通路を流れる排気ガスの流最を
制御する排気ガス再循環制御弁と、前記粒子ｍｓ器より
上流側の排気通路に於ける排気ガス圧の増大に応じて前
記排気ガス再循環制御弁の開演を減少させる排気ガス圧
補償手段とを有していることを特徴とづる排気ガス再循
環装置。Exhaust gas recirculation of a diesel engine equipped with a particle collector that collects particles in the exhaust gas in the middle of the exhaust passage 1. Exhaust gas installed in the exhaust passage upstream of the particle collector. an exhaust gas recirculation passage that guides exhaust gas from a gas intake port to an exhaust gas injection boat provided in an intake passage; an exhaust gas recirculation control valve that controls the flow of exhaust gas flowing through the exhaust gas recirculation passage; , an exhaust gas pressure compensating means for reducing the opening of the exhaust gas recirculation control valve in response to an increase in exhaust gas pressure in the exhaust passage upstream of the particle MS device. Exhaust gas recirculation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56157868A JPS5859345A (en) | 1981-10-02 | 1981-10-02 | Exhaust gas recirculating device for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56157868A JPS5859345A (en) | 1981-10-02 | 1981-10-02 | Exhaust gas recirculating device for diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5859345A true JPS5859345A (en) | 1983-04-08 |
| JPH0343463B2 JPH0343463B2 (en) | 1991-07-02 |
Family
ID=15659153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56157868A Granted JPS5859345A (en) | 1981-10-02 | 1981-10-02 | Exhaust gas recirculating device for diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5859345A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6050210A (en) * | 1983-08-29 | 1985-03-19 | Mitsubishi Motors Corp | Exhaust gas recirculation device for diesel engine |
| JPH03151558A (en) * | 1989-10-21 | 1991-06-27 | Mercedes Benz Ag | Control device of exhaust gas reflux rate in internal combustion engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5132767A (en) * | 1974-07-02 | 1976-03-19 | Unilever Nv | |
| JPS52100014A (en) * | 1976-02-18 | 1977-08-22 | Hitachi Ltd | Engine exhaust gas recirculating device with supercharger |
| JPS5726656U (en) * | 1980-07-22 | 1982-02-12 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH601164A5 (en) * | 1976-07-07 | 1978-06-30 | Schweizerhall Saeurefab |
-
1981
- 1981-10-02 JP JP56157868A patent/JPS5859345A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5132767A (en) * | 1974-07-02 | 1976-03-19 | Unilever Nv | |
| JPS52100014A (en) * | 1976-02-18 | 1977-08-22 | Hitachi Ltd | Engine exhaust gas recirculating device with supercharger |
| JPS5726656U (en) * | 1980-07-22 | 1982-02-12 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6050210A (en) * | 1983-08-29 | 1985-03-19 | Mitsubishi Motors Corp | Exhaust gas recirculation device for diesel engine |
| JPH03151558A (en) * | 1989-10-21 | 1991-06-27 | Mercedes Benz Ag | Control device of exhaust gas reflux rate in internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0343463B2 (en) | 1991-07-02 |
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