Title:
EMISSION CONTROL DEVICE AND EXHAUST GAS FILTER RECONDITIONING METHOD
Document Type and Number:
Japanese Patent JP3651134
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an emission control device to accurately measure a flow rate of air for reconditioning with a low pressure loss and control a flow rate to a fixed value and to perform accurate and simple control of a flow rate of air for reconditioning.
SOLUTION: An emission control device comprises a first pressure sensor 1a disposed in a spot situated downstream from a blast means 7 to feed air for reconditioning; an electric heater 4 disposed in a spot situated downstream from a first pressure sensor 1a; and a second pressure sensor 1b disposed in a spot situated downstream from the electric heater 4. Further, an exhaust gas filter reconditioning method comprises a pressure detecting step wherein a difference between pressures for air for reconditioning in places situated upper stream and downstream from the electric heater is detected and the difference is compared with a target differential pressure; and a blast means control step wherein a blast means to feed air for reconditioning such that a difference in a pressure of air for reconditioning coincides with a target differential pressure.
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Inventors:
Takeo Fukuda
Yoshinobu Hoemoto
Yasuhiro Fujiwara
Yoshinobu Hoemoto
Yasuhiro Fujiwara
Application Number:
JP22808896A
Publication Date:
May 25, 2005
Filing Date:
August 29, 1996
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
F01N3/02; F01N3/023; F01N9/00; F01N3/30; (IPC1-7): F01N3/02; F01N9/00
Domestic Patent References:
| JP8210122A | ||||
| JP8210123A |
Attorney, Agent or Firm:
Fumio Iwahashi
Tomoyasu Sakaguchi
Hiroki Naito
Tomoyasu Sakaguchi
Hiroki Naito