JPS63132818U

JPS63132818U -

Info

Publication number: JPS63132818U
Application number: JP2381387U
Authority: JP
Priority date: 1987-02-20
Filing date: 1987-02-20
Publication date: 1988-08-30

Description

[Brief explanation of the drawing]

第１〜８図は本考案の一実施例としてのデイー
ゼルエンジン用排出ガス後処理装置を示すもので
、第１図はその制御系を示すブロツク図、第２図
はその全体構成を示す模式図、第３図はその制御
要領を説明するためのフローチヤート、第４〜８
図はいずれもその作用を説明するためのグラフで
ある。１……デイーゼルエンジン、１ａ……燃焼室、
２……給気系、２ａ……給気通路、３……エアク
リーナ、４……排気系、４ａ，４ｄ……共通排気
通路、４ｂ……第１の分岐排気通路、４ｃ……第
２の分岐排気通路、５ａ……高温用触媒付き捕集
部材としてのデイーゼルパテイキユレートトラツ
プ、５ｂ……低温用触媒付き捕集部材としてのデ
イーゼルパテイキユレートトラツプ、６，６′…
…接続部、７……マフラー、８……開閉弁、９…
…アクチユエータ、１０……制御手段（ＥＣＵ）
、１０ａ〜１０ｆ……第１〜第６の制御部、１１
……センサ群、１１ａ……運転領域センサ、１１
ｂ，１１ｃ……再生時期検出手段を構成する圧力
センサ、１１ｄ……エンジン回転数センサ、１１
ｅ……出力トルク検出手段（負荷センサ）、１１
ｆ……排温センサ、１１ｇ……ラツク位置センサ
、１２……燃料噴射ポンプ、１３……ピストン、
１４……燃料噴射装置（インジエクタ）、１５…
…吸気弁、１６……排気弁、１７……再生手段、
１７ａ……吸気絞り機構、１７ｂ……排気絞り機
構、１７ｃ……燃料噴射時期遅角機構（タイミン
グリタード機構）、１７ｄ……燃料噴射時期進角
機構（タイミングアドバンス機構）、１７ｅ……
燃料噴射時期制御装置、１８……メモリ、１９ａ
〜１９ｄ……圧力検出通路、２０……クランク軸
。 Figures 1 to 8 show an exhaust gas after-treatment device for a diesel engine as an embodiment of the present invention. Figure 1 is a block diagram showing its control system, and Figure 2 is a schematic diagram showing its overall configuration. , Fig. 3 is a flowchart for explaining the control procedure, Nos. 4 to 8.
All figures are graphs for explaining the effects. 1... Diesel engine, 1a... Combustion chamber,
2... Air supply system, 2a... Air supply passage, 3... Air cleaner, 4... Exhaust system, 4a, 4d... Common exhaust passage, 4b... First branch exhaust passage, 4c... Second Branch exhaust passage, 5a... Diesel particulate trap as a collecting member with catalyst for high temperature, 5b... Diesel particulate trap as collecting member with catalyst for low temperature, 6, 6'...
... Connection part, 7 ... Muffler, 8 ... Opening/closing valve, 9 ...
...actuator, 10...control means (ECU)
, 10a to 10f...first to sixth control units, 11
...Sensor group, 11a...Driving area sensor, 11
b, 11c...pressure sensor constituting regeneration timing detection means, 11d...engine rotation speed sensor, 11
e...Output torque detection means (load sensor), 11
f...Exhaust temperature sensor, 11g...Rack position sensor, 12...Fuel injection pump, 13...Piston,
14...Fuel injection device (injector), 15...
...Intake valve, 16...Exhaust valve, 17...Regeneration means,
17a...Intake throttle mechanism, 17b...Exhaust throttle mechanism, 17c...Fuel injection timing retard mechanism (timing retard mechanism), 17d...Fuel injection timing advance mechanism (timing advance mechanism), 17e...
Fuel injection timing control device, 18... memory, 19a
~19d...Pressure detection passage, 20...Crankshaft.

Claims

[Scope of utility model registration request]

Regeneration time detection means includes a collection member inserted into the exhaust system of the diesel engine to collect particulate matter discharged from the combustion chamber, and detects when the collection member should be regenerated;
and a regeneration means capable of supplying high-temperature gas containing oxygen to the collection member in response to a regeneration time detection signal from the regeneration time detection means, and the regeneration means supplies the high temperature gas containing oxygen to the engine according to the operating state of the engine. It is characterized by being configured with an intake throttle mechanism that raises the temperature of the exhaust gas by throttling the supplied intake air.
Exhaust gas after-treatment device for diesel engines.