Title:
REGENERATION METHOD FOR EXHAUST-GAS AFTERTREATMENT DEVICE IN ENGINE-DRIVEN COMPRESSOR, AND ENGINE-DRIVEN COMPRESSOR PROVIDED WITH SAID AFTERTREATMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/035164
Kind Code:
A1
Abstract:
Provided is a forced-regeneration treatment method for a DPF that can be used in an engine-driven compressor. When the amount of particulate matter (PM) deposited in a filter element of an exhaust-gas aftertreatment device (DPF) 50, which is provided in an exhaust path 21 of an engine 20 that is provided in an engine-driven compressor 1, becomes equal to or greater than a predetermined forced-regeneration start amount (e.g., 10 g/L) and a forced-regeneration start command is input, a capacity controlling means 30 of the engine-driven compressor 1 is disabled to close an intake valve 12 and to open the discharge side of a compressor main unit 10 to atmospheric pressure, thereby causing the compressor main unit 10 to achieve a low-load state. In addition, the operation mode of the engine is switched to a predetermined forced-regeneration mode to operate the engine at a predetermined regeneration rotation speed and to increase the temperature of the exhaust gas. Thus, the temperature inside the DPF 50 is increased to a temperature equal to or higher than the temperature at which an oxidative catalyst is activated and to a temperature lower than the self-combustion temperature of the PM, thereby forcibly burning the PM deposited in the filter element.
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Inventors:
HAYAKAWA TASUKU (JP)
Application Number:
PCT/JP2014/073178
Publication Date:
March 10, 2016
Filing Date:
September 03, 2014
Export Citation:
Assignee:
HOKUETSU KOGYO CO (JP)
International Classes:
F01N3/023; F01N3/025; F01N3/029; F01N3/18; F04B35/00; F04B49/00; F04B49/02
Foreign References:
| JP2012097681A | 2012-05-24 | |||
| JP2011112004A | 2011-06-09 | |||
| JP2010261340A | 2010-11-18 | |||
| JP2005241219A | 2005-09-08 | |||
| JP2004346836A | 2004-12-09 |
Attorney, Agent or Firm:
OGURA, MASAAKI (JP)
Masaaki Ogura (JP)
Masaaki Ogura (JP)
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