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Patent Searching and Data


Title:
DPF SYSTEM
Document Type and Number:
WIPO Patent Application WO/2012/081460
Kind Code:
A1
Abstract:
Provided is a DPF system that can prevent the catalytic activity of a DOC from degrading due to hydrocarbon poisoning when exhaust-pipe injection is used to increase the temperature of exhaust gas. Said DPF system (10) performs DPF regeneration wherein fuel is injected using an exhaust-pipe injector (24) and said fuel is oxidized/combusted in a DOC (23), thereby using combustion to remove particulate matter accumulated in a DPF. Said DPF system is provided with: temperature sensors (25 and 26) provided before and after the DOC (23); and a poisoning-prevention means (29). The amount of fuel injected (Q) by the exhaust-pipe injector (24) and the temperatures (T1 and T2) detected by the temperature sensors are inputted to the poisoning-prevention means, which uses said input to determine whether or not the amount of heat generated by the DOC (23) is appropriate.

Inventors:
NAGAOKA Daiji (Fujisawa factory 8, Tsuchidana, Fujisawa-sh, Kanagawa 01, 〒2528501, JP)
長岡 大治 (〒01 神奈川県藤沢市土棚8番地 いすゞ自動車株式会社 藤沢工場内 Kanagawa, 〒2528501, JP)
NAKADA Teruo (Fujisawa factory 8, Tsuchidana, Fujisawa-sh, Kanagawa 01, 〒2528501, JP)
Application Number:
JP2011/078280
Publication Date:
June 21, 2012
Filing Date:
December 07, 2011
Export Citation:
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Assignee:
ISUZU MOTORS LIMITED (26-1, Minami-Ohi 6-chome Shinagawa-k, Tokyo 22, 〒1408722, JP)
いすゞ自動車株式会社 (〒22 東京都品川区南大井6丁目26番1号 Tokyo, 〒1408722, JP)
NAGAOKA Daiji (Fujisawa factory 8, Tsuchidana, Fujisawa-sh, Kanagawa 01, 〒2528501, JP)
長岡 大治 (〒01 神奈川県藤沢市土棚8番地 いすゞ自動車株式会社 藤沢工場内 Kanagawa, 〒2528501, JP)
International Classes:
F01N3/20; F01N3/023; F01N3/025; F01N3/029; F01N3/36
Domestic Patent References:
WO2011135710A1
Foreign References:
JP2009085079A
JP4178960B2
JPH0544434A
JP2007138898A
JP2003106140A
JP2005240672A
Attorney, Agent or Firm:
KINUTANI Nobuo (Chemical Building, 15-12 Nishi-Shimbashi 3-chome, Minato-k, Tokyo 03, 〒1050003, JP)
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Claims: