JPS60230507A - Afterburning method for particulate filter - Google Patents
Afterburning method for particulate filterInfo
- Publication number
- JPS60230507A JPS60230507A JP59086957A JP8695784A JPS60230507A JP S60230507 A JPS60230507 A JP S60230507A JP 59086957 A JP59086957 A JP 59086957A JP 8695784 A JP8695784 A JP 8695784A JP S60230507 A JPS60230507 A JP S60230507A
- Authority
- JP
- Japan
- Prior art keywords
- filter
- particulate filter
- exhaust pipe
- particulates
- temperature
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/011—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more purifying devices arranged in parallel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/031—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters having means for by-passing filters, e.g. when clogged or during cold engine start
- F01N3/032—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters having means for by-passing filters, e.g. when clogged or during cold engine start during filter regeneration only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2250/00—Combinations of different methods of purification
- F01N2250/06—Combinations of different methods of purification afterburning and filtering
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は内燃機関、殊にディーゼル機関の排気管の途中
に設けられたパティキュレイトフィルタに捕集されたカ
ーボンを、フィルタを溶ＷＡさせることなく再燃焼させ
るパティキュレイトフィルタの再燃焼方法に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention is directed to a method of dissolving carbon collected in a particulate filter provided in the middle of an exhaust pipe of an internal combustion engine, particularly a diesel engine, by melting the filter. The present invention relates to a method for reburning a particulate filter without reburning the particulate filter.
ディーゼル機関の排気ガス中には黒煙発生の原因となる
パティキュレイト（主成分はカーボン微粒子）が含まれ
ている。Diesel engine exhaust gas contains particulates (mainly carbon particles) that cause black smoke.
このパティキュレイトを捕集するために、排気管の途中
にはセラミック製等のパティキュレイトフィルタが設け
られているが、捕集されたパティキュレイトによってフ
ィルタが目詰まりを起こすので、前記フィルタは定期的
に再燃焼させてこれを解消させなければならない。In order to collect these particulates, a particulate filter made of ceramic or the like is installed in the middle of the exhaust pipe, but the filter is clogged by the collected particulates, so the filter must be periodically reburned to eliminate this problem.
ところが、パティキュレイト再燃焼時にフィルタの入口
温度をパティキュレイト燃焼温度まで上昇させたのでは
フィルタの溶損を引き起こすという問題がある。また、
フィルタの溶損防止のためにパティキュレイトフィルタ
の再燃焼温度を低く保持すると、パティキュレイトの燃
焼効率が悪化するという欠点がある。However, if the inlet temperature of the filter is raised to the particulate combustion temperature during particulate re-combustion, there is a problem that the filter will be melted and damaged. Also,
If the reburning temperature of the particulate filter is kept low in order to prevent the filter from melting, there is a drawback that the combustion efficiency of the particulates deteriorates.
そこで、パティキュレイトフィルタの再燃焼温度の制御
を、吸気系に設けられたスロットルを調整して行うよう
にし−た例が特開昭５５−５７６３７号公報にみられる
が、この方法は出力不足、燃費悪化、排気煙悪化を伴い
、運転フィーリングが悪いという欠点がある。Therefore, an example of controlling the reburning temperature of the particulate filter by adjusting a throttle installed in the intake system is seen in Japanese Patent Application Laid-open No. 57-57637, but this method lacks output. However, it has the drawbacks of poor driving feeling, including poor fuel efficiency and poor exhaust smoke.
本発明の目的は前記従来のパティキュレイトフィルタの
再燃焼時の問題を解消し、パティキュレイト再燃焼時に
フィルタの溶損を防止すると共に、パティキュレイトフ
ィルタの入口温度を制御して、パティキュレイトの燃焼
効率を高めることができる優れたパティキュレイトフィ
ルタの再燃焼方法を提供することである。An object of the present invention is to solve the problems of the conventional particulate filter during re-burning, prevent the filter from melting during the particulate re-burning, and control the inlet temperature of the particulate filter to reduce the particulate filter. An object of the present invention is to provide an excellent particulate filter re-combustion method capable of increasing the combustion efficiency of curate.
前記目的を達成する本発明のパティキュレイトフィルタ
の再燃焼方法は、内燃機関の排気管の途中に設けられた
パティキュレイトフィルタを、再燃焼装置によりまず所
定時間６００℃±５０℃に保ち、次に数分以内の間７５
０℃±５０℃の保持し、この後温度を徐々に低下させて
再燃焼を完了させるようにしたことを特徴とするもので
ある。The particulate filter reburning method of the present invention which achieves the above object includes first maintaining a particulate filter installed in the middle of an exhaust pipe of an internal combustion engine at 600°C ± 50°C for a predetermined time using a reburning device; then 75 for within a few minutes
It is characterized in that the temperature is maintained at 0°C±50°C, and then the temperature is gradually lowered to complete the reburning.
以下添付図面を用いて本発明の詳細な説明する。 The present invention will be described in detail below with reference to the accompanying drawings.
第１図は本発明の方法を適用する内燃機関の排気系を示
すものであり、内燃機関１の排気マニホルド２に接続す
る排気管３は、その途中で排気管３Ａと排気管３Ｂとに
二分岐されている。FIG. 1 shows an exhaust system of an internal combustion engine to which the method of the present invention is applied, in which an exhaust pipe 3 connected to an exhaust manifold 2 of an internal combustion engine 1 is bifurcated into an exhaust pipe 3A and an exhaust pipe 3B on the way. It is branched.
そして、二分岐された排気管３Ａ、３Ｂはそれぞれ部分
的に膨出され、その膨出部４にパティキュレイトフィル
タ５が各々内蔵されている。The bifurcated exhaust pipes 3A and 3B are each partially bulged out, and a particulate filter 5 is housed in each of the bulged portions 4.
また、前記排気管３の分岐部３ａにはアクチュエータ８
に駆動される切換弁６が設置されており、内燃機関１か
らの排気ガスＧを前記排気管３Ａ、３Ｂのどちらかに流
すようになっている。Further, an actuator 8 is provided at the branch portion 3a of the exhaust pipe 3.
A switching valve 6 driven by the engine 1 is installed so that the exhaust gas G from the internal combustion engine 1 flows into either the exhaust pipe 3A or 3B.
さらに、前記排気管３Ａ、３Ｂのパティキュレイトフィ
ルタ５の上流側にはそれぞれバーナ７が設置され“でお
り、このバーナ７は点火されると前記パティキュレイト
フィルタ５に捕集されたパティキュレイトを再燃焼させ
るようになっている。また、このバーナ７の下流側であ
って、前記パティキュレイトフィルタ５の排気ガス入口
部から１０〜１００龍程度上流側には、温度センサＴＡ
、ＴＢおよび圧力センサＰＡ、ＰＢが設置されており、
共に制御装置１０に接続されている。Furthermore, a burner 7 is installed on the upstream side of the particulate filter 5 of the exhaust pipes 3A and 3B, and when the burner 7 is ignited, the particulate matter collected by the particulate filter 5 is removed. Further, on the downstream side of this burner 7 and about 10 to 100 meters upstream from the exhaust gas inlet of the particulate filter 5, there is a temperature sensor TA.
, TB and pressure sensors PA and PB are installed,
Both are connected to the control device 10.
前記制御装置１０は、前記アクチュエータ８および２個
のバーナ７に接続されており、これらの動作を制御する
ように構成されている。The control device 10 is connected to the actuator 8 and the two burners 7, and is configured to control their operations.
第２図は、前記構成の装置を使用してパティキュレイト
フィルタ５に捕集されたパティキュレイトを燃焼させた
際のＴ１時間内の実験結果を示しており、パティキュレ
イトフィルタの入口温度（”Ｃ）−再燃焼効率（％）の
特性を示すものである。FIG. 2 shows the experimental results within time T1 when particulates collected in the particulate filter 5 were combusted using the apparatus configured as described above, and the inlet temperature of the particulate filter (''C) - indicates the characteristics of reburning efficiency (%).
この結果より、Ｔ１時間内にフィルタ５の中心部のパテ
ィキュレイトが燃焼し、Ｔ１時間後はフィルタ５の中心
部のパティキュレイトは燃焼を終了しているので、温度
を６５０℃以上に上げてもフィルタ５の外周部のパティ
キュレイトの発熱を中心部が吸収し、フィルタ５が溶損
する恐れがないことがわかった。From this result, the particulates in the center of the filter 5 are burned within T1 time, and the particulates in the center of the filter 5 have finished burning after T1 time, so the temperature is increased to 650°C or higher. However, it was found that the heat generated by the particulates on the outer periphery of the filter 5 was absorbed by the central part, and there was no fear that the filter 5 would be melted and damaged.
そこで、本発明では例えば切換弁６が排気管３Ａを排気
管３に接続している時に、圧力センサＰＡの出力値が上
昇してフィルタ５が目詰りを起こしていると制御装置１
０が判断した時には（第４図ステップ■でＹＦ、Ｓ）
、制御装置１０によってアクチュエータ８が作動し、切
換弁６が切り換わって排気管３Ｂが排気管３に接続され
るようになっている（ステップ■）。Therefore, in the present invention, for example, when the switching valve 6 connects the exhaust pipe 3A to the exhaust pipe 3, if the output value of the pressure sensor PA increases and the filter 5 is clogged, the control device 1
When 0 is judged (YF, S in step ■ in Figure 4)
, the actuator 8 is actuated by the control device 10, the switching valve 6 is switched, and the exhaust pipe 3B is connected to the exhaust pipe 3 (step 2).
そして、この後に制御装置１０によって排気管３Ａ側の
バーナ７が点火され（ステップ■）、このバーナ７の下
流側のフィルタ５に捕集されたパティキュレイトが再燃
焼される。本発明では前記実験の結果より、第１段階と
してパティキュレイトの再燃焼温度を６５０±５０℃の
範囲でＴ１時間一定に保持する（ステップ■〜■）。Thereafter, the burner 7 on the exhaust pipe 3A side is ignited by the control device 10 (step 2), and the particulates collected in the filter 5 on the downstream side of the burner 7 are re-burned. In the present invention, as a first step, the reburning temperature of particulates is held constant in the range of 650±50° C. for T1 time (steps ① to ②), based on the results of the above experiments.
この時のパティキュレイトの再燃焼温度は、前記温度セ
ンサＴＡによって測定されたものが使用される。At this time, the particulate reburning temperature measured by the temperature sensor TA is used.
その後、第２段階として本発明では前記制御装置１０が
バーナ７を調整してパティキュレイトの再燃焼温度を７
５０±５０℃に１２時間一定に保持する（ステップ■〜
＠ｌ）。さらに、本発明ではこの後にバーナ７の点火を
停止するか、Ｔ３時間かけて徐々にバーナ７の出力を下
げ、ガス温度を低下させて再燃焼を完了する（ステップ
■）。Thereafter, in the second step, in the present invention, the control device 10 adjusts the burner 7 to adjust the reburning temperature of the particulates to 7.
Maintain constant temperature at 50±50℃ for 12 hours (step ■～
@l). Further, in the present invention, after this, the ignition of the burner 7 is stopped, or the output of the burner 7 is gradually lowered over a period of T3 to lower the gas temperature and complete the re-combustion (step (2)).
本発明における前記時間Ｔ＋ 、Ｔ２ 、Ｔ３の値は例
えば下記のように設定すれば良い。The values of the times T+, T2, and T3 in the present invention may be set as follows, for example.
Ｔ１−５〜３０分
子２＝０．５〜５分
子３＝０〜５分
第３図は以上のような本発明のパティキュレイトフィル
タの再燃焼方法によりパティキュレイトを再燃焼させた
場合の、時間に対するフィルタ５の入口温度（温度セン
サによる検出値）の変化を示す線図である。T1-5 to 30 molecules 2 = 0.5 to 5 molecules 3 = 0 to 5 minutes , is a diagram showing changes in the inlet temperature of the filter 5 (value detected by a temperature sensor) with respect to time.
なお、６５０±５０℃→７５０±５０℃まで５．５分〜
３５分間かけてフィルタ５の入口温度を上昇させても良
いものである。In addition, from 650±50℃ to 750±50℃ for 5.5 minutes
The inlet temperature of the filter 5 may be increased over 35 minutes.
このようにして、目詰りを起こしていた排気管３Ａ側の
パティキュレイトフィルタ５は、溶損することなく内部
に捕集されていたパティキュレイトが再燃焼するので、
目詰まりが解消され、パティキュレイト捕集力を回復す
る。そして、この後に圧力センサＰＢによって排気管３
Ｂ側のパティキュレイトフィルタ５の目詰まりが検出さ
れると、制御装置１０はアクチュエータ８を作動させて
切換弁６を切り換え、排気管３Ａを排気管３に接続し、
排気管３Ｂの入口側を遮断してこの内部のフィルタ５の
再燃焼を前記同様に行う。In this way, the particulate filter 5 on the exhaust pipe 3A side, which has been clogged, will not be melted down and the particulates collected inside will be re-burned.
Clogging is cleared and particulate collection ability is restored. After this, the exhaust pipe 3 is controlled by the pressure sensor PB.
When clogging of the particulate filter 5 on the B side is detected, the control device 10 operates the actuator 8 to switch the switching valve 6, connect the exhaust pipe 3A to the exhaust pipe 3,
The inlet side of the exhaust pipe 3B is shut off and the filter 5 inside is re-burned in the same manner as described above.
以上のように、本発明では内燃機関１の排気管３の途中
に設けられたパティキュレイトフィルタ５は、目詰まり
を生じた時に片方ずつ、制御装置１０によって温度制御
されなから溶損することなく燃焼効率良く再燃焼される
。従って、内燃機関１の排気ガスＧ中に含まれるパティ
キュレイトは、常にパティキュレイトフィルタによって
捕集されるので、排気ガスは清浄に保たれる。As described above, in the present invention, when the particulate filter 5 installed in the middle of the exhaust pipe 3 of the internal combustion engine 1 becomes clogged, the temperature of the particulate filter 5 is not controlled by the control device 10 one by one, so that the particulate filter 5 is not melted and damaged. It is re-burned with good combustion efficiency. Therefore, the particulates contained in the exhaust gas G of the internal combustion engine 1 are always collected by the particulate filter, so that the exhaust gas is kept clean.
以上説明したように本発明のパティキュレイトフィルタ
の再燃焼方法は、内燃機関の排気管の途中に設けられた
パティキュレイトフィルタを、再燃焼装置によりまず所
定時間６００℃±５０℃に保ち、次に数分以内の間７５
０℃±５０℃の保持し、この後温度を徐々に低下させて
再燃焼を完了させるようにしたことにより、パティキュ
レイト再燃焼時にフィルタの溶損、破損を防ぐと共に、
燃焼効率を上げることができるという優れた効果がある
。As explained above, in the particulate filter reburning method of the present invention, the particulate filter installed in the middle of the exhaust pipe of an internal combustion engine is first kept at 600°C ± 50°C for a predetermined period of time using a reburning device. then 75 for within a few minutes
By maintaining the temperature at 0°C ± 50°C and then gradually lowering the temperature to complete reburning, the filter is prevented from being melted or damaged during particulate reburning, and
It has the excellent effect of increasing combustion efficiency.
第１図は本発明の方法を実施するための内燃機関の排気
経路の一実施例を示す概略図、第２図は実験によるフィ
ルタ入口温度−再燃焼効率特性を示す線図、第３図はパ
ティキュレイト再燃焼時の時間−フィルタ入口温度特性
を示す線図、第４図は本発明のパティキュレイトフィル
タの再燃焼方法の手順の一例を示す流れ図である。
■・・・内燃機関、３，３Ａ、３Ｂ・・・排気管、５・
・・パティキュレイトフィルタ、６・・・切換弁、７・
・・バーナ、８・・・アクチュエータ、１ｏ・・・制御
装置。
代理人 弁理士 小 川 信 −
弁理士 野 口 賢 照
弁理士斎下和彦Fig. 1 is a schematic diagram showing an example of the exhaust path of an internal combustion engine for carrying out the method of the present invention, Fig. 2 is a diagram showing experimental filter inlet temperature-reburning efficiency characteristics, and Fig. 3 is a diagram showing an example of the exhaust path of an internal combustion engine for carrying out the method of the present invention. FIG. 4 is a diagram showing time-filter inlet temperature characteristics during particulate re-burning, and is a flowchart showing an example of the procedure of the particulate filter re-burning method of the present invention. ■... Internal combustion engine, 3, 3A, 3B... Exhaust pipe, 5.
...Particulate filter, 6...Switching valve, 7.
... Burner, 8... Actuator, 1o... Control device. Agent: Patent Attorney Shin Ogawa − Patent Attorney Ken Noguchi Teru Patent Attorney Kazuhiko Saishita
Claims (1)
フィルタを、再燃焼装置によりまず所定時間６００℃±
５０℃に保ち、次に数分以内の間７５０℃±５０℃の保
持し、この後温度を徐々に低下させて再燃焼を完了させ
るようにしたことを特徴とするパティキュレイトフィル
タの再燃焼方法。First, a particulate filter installed in the middle of the exhaust pipe of an internal combustion engine is heated to 600℃± for a predetermined period of time using a re-combustion device.
Reburning of a particulate filter characterized by maintaining the temperature at 50°C, then holding it at 750°C ± 50°C for a few minutes, and then gradually lowering the temperature to complete the reburning. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59086957A JPS60230507A (en) | 1984-04-30 | 1984-04-30 | Afterburning method for particulate filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59086957A JPS60230507A (en) | 1984-04-30 | 1984-04-30 | Afterburning method for particulate filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60230507A true JPS60230507A (en) | 1985-11-16 |
| JPH0336133B2 JPH0336133B2 (en) | 1991-05-30 |
Family
ID=13901351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59086957A Granted JPS60230507A (en) | 1984-04-30 | 1984-04-30 | Afterburning method for particulate filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60230507A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0292688A2 (en) * | 1987-05-21 | 1988-11-30 | Webasto AG Fahrzeugtechnik | Arrangement of soot filter in a diesel engine exhaust system |
| DE3837073A1 (en) * | 1988-10-31 | 1990-05-03 | Eberspaecher J | SOOT FILTER FOR DIESEL VEHICLES |
| DE4008092A1 (en) * | 1990-03-14 | 1991-09-19 | Gillet Heinrich Gmbh | Regeneration of carbon filters for Diesel IC engine - using reference airflow to monitor pressure build=up on filters to determine regeneration point |
| JP2009528479A (en) * | 2006-02-28 | 2009-08-06 | キャタピラー インコーポレイテッド | Particulate trap regeneration temperature control system |
-
1984
- 1984-04-30 JP JP59086957A patent/JPS60230507A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0292688A2 (en) * | 1987-05-21 | 1988-11-30 | Webasto AG Fahrzeugtechnik | Arrangement of soot filter in a diesel engine exhaust system |
| US4945722A (en) * | 1987-05-21 | 1990-08-07 | Webasto Ag Fahrzeugtechnik | Soot filtering unit for the exhaust of a diesel internal combustion engine and method for regenerating the filters thereof |
| DE3837073A1 (en) * | 1988-10-31 | 1990-05-03 | Eberspaecher J | SOOT FILTER FOR DIESEL VEHICLES |
| DE4008092A1 (en) * | 1990-03-14 | 1991-09-19 | Gillet Heinrich Gmbh | Regeneration of carbon filters for Diesel IC engine - using reference airflow to monitor pressure build=up on filters to determine regeneration point |
| JP2009528479A (en) * | 2006-02-28 | 2009-08-06 | キャタピラー インコーポレイテッド | Particulate trap regeneration temperature control system |
| DE112007000492B4 (en) * | 2006-02-28 | 2019-03-14 | Caterpillar Inc. | Particulate trap regeneration temperature control system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0336133B2 (en) | 1991-05-30 |
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