BURNER AIR CONTROL SYSTEM OF DIESEL PARTICULATE FILTER

Japanese Patent JPS59226220

A

PURPOSE:To keep the mass flow rate of air supplied to a burner for regenerating a filter constant by a structure wherein a pressure regulating valve, which is controlled by the pressure in an air passage and the atmospheric pressure, and an air control valve, which is controlled by the certain fixed pressure led from a constant pressure valve and the atmospheric pressure, are provided. CONSTITUTION:An air pump 22 is interposed in an air passage 23 between an air cleaner 21 arranged at a burner air inlet and a burner 7 for regenerating a diesel particulate filter 8. Further, a pressure regulating valve (PRV) 24 and an air control valve (ACV) 25 are sequentially arranged in an air passage 23 downstream the air pump 22. PRV24 consists of respective chambers 24a and 24b, to which the air pressure after ACV25 and the atmospheric pressure are respectively led, and acts so as to close PRV24 with the lowering of the atmospheric pressure. Furthermore, ACV25 consists of respective chambers 25a and 25b, which respectively act as a constant absolute pressure valve (CPV) and a diaphragm type valve communicating to the atmospheric air, and at the same time is also formed so as to be electrically controlled by means of a computer 28 in accordance with the output of an atmospheric pressure sensor 29.

JP2023161518	EXHAUST SYSTEM
JP3566913	Exhaust purification device

KUME SATOSHI
YOSHIDA MICHIYASU
KONNO YOSHIHIRO
KUME TAKEO

JP10015883A

December 19, 1984

June 07, 1983

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MITSUBISHI MOTORS CORP

F01N3/02; F01N3/025; F01N3/22; F01N9/00; (IPC1-7): F01N3/02; F01N3/18

Jiro Nagaya

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