JPS5960330U

JPS5960330U - Carbon particle purification device for engine exhaust system

Info

Publication number: JPS5960330U
Application number: JP15687882U
Authority: JP
Inventors: 柳川　元
Original assignee: 株式会社ボッシュオートモーティブ　システム
Priority date: 1982-10-16
Filing date: 1982-10-16
Publication date: 1984-04-20

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

図面は本考案の実施例を示し、第１図は概略全体構成図
、第２図は要部詳細断面図、第３図は背圧付与時の切換
弁の位置を示す図である。　　　、１・・・エンジン、
３・・・燃料噴射ノズル本体、３ａ・・・燃料入口、３
ｂ・・・オーバフロー出口、３ｄ・・・針弁、４・・・
燃料噴射ポンプ、６・・・燃料タンク、１１・・・排気
管、１２・・・微粒子捕集フィルタ、１３・・・切換弁
、１４・・・コントロールユニット。The drawings show an embodiment of the present invention; FIG. 1 is a schematic overall configuration diagram, FIG. 2 is a detailed sectional view of the main part, and FIG. 3 is a diagram showing the position of the switching valve when back pressure is applied. , 1...engine,
3... Fuel injection nozzle body, 3a... Fuel inlet, 3
b... Overflow outlet, 3d... Needle valve, 4...
Fuel injection pump, 6...Fuel tank, 11...Exhaust pipe, 12...Particulate collection filter, 13...Switching valve, 14...Control unit.

Claims

[Scope of Claim for Utility Model Registration] 1. The fuel inlet connected to the fuel injection pump of the fuel injection nozzle body and the overflow outlet connected to the fuel tank are communicated via a switching valve, and each fuel injection timing Operate the above switching valve to temporarily cut off communication between the overflow outlet and the fuel tank for the required time, and at the same time introduce the fuel delivered from the fuel injection pump into the nozzle body from the overflow outlet to apply back pressure to the needle valve. A device for purifying carbon particulates in an engine exhaust system, which increases the temperature of the engine exhaust gas by delaying the injection timing of the fuel injection nozzle and burns and purifies the carbon particulates in the engine exhaust system. 2 Carbon particles in the exhaust system of the engine are collected by a particle collection filter installed in the exhaust pipe, and the switching valve calculates this by inputting the engine rotation speed, load, exhaust pressure in the exhaust pipe, etc. It is operated by the output signal of the processing control unit, and the back pressure duration of the needle valve is controlled to raise the engine exhaust temperature to a required temperature, and the carbon particulates collected in the particulate filter are combusted and purified. A carbon particulate purification device for an engine exhaust system according to claim 1, which is characterized by the above-mentioned.