JPH0348747U

JPH0348747U -

Info

Publication number: JPH0348747U
Application number: JP10930589U
Authority: JP
Priority date: 1989-09-19
Filing date: 1989-09-19
Publication date: 1991-05-10

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す構成図、第２
図は従来例を示す構成図である。１１……空気通路、１７……定流量装置、１８
……オリフイス、２１……排気通路、２２……比
例分割器、２３……サージ・タンク、２４……排
気仕切弁、２５……バイパス、２６……制御弁、
３０……制御部、３１……差圧センサ。 Fig. 1 is a configuration diagram showing one embodiment of the present invention;
The figure is a configuration diagram showing a conventional example. 11...Air passage, 17...Constant flow device, 18
... Orifice, 21 ... Exhaust passage, 22 ... Proportional divider, 23 ... Surge tank, 24 ... Exhaust gate valve, 25 ... Bypass, 26 ... Control valve,
30...Control unit, 31...Differential pressure sensor.

Claims

[Scope of utility model registration request]

An air passage that connects an air supply blower located upstream and a constant flow device located downstream, and has an orifice inserted in the middle, and an exhaust gas outlet of the engine body and an exhaust gate valve. a proportional divider formed by a plurality of pipes with equal flow resistance in the middle part and which divides the exhaust gas uniformly; and an exhaust passage in which a surge tank is interposed downstream of the proportional divider; Any of the piping constituting the proportional divider is interposed between a sample probe extending upstream of the orifice of the air passage and a bypass that causes part of the exhaust gas in the surge tank to flow downstream of the exhaust gate valve. and a control unit that detects a difference between the back pressure on the downstream side of the orifice of the air passage and the back pressure in the surge tank and opens and closes the control valve. Retrieval device.