Title:
内燃機関の添加剤供給装置
Document Type and Number:
Japanese Patent JP5751345
Kind Code:
B2
Abstract:
An engine (1) is provided with an SCR catalyst (41) that purifies NOx, a urea injection valve (230) that adds aqueous urea solution to the SCR catalyst (41), and a first NOx sensor (130) that detects the amount of generated NOx. A control unit (80) adds up the amount of generated NOx from when aqueous urea solution was previously injected, and performs an addition process for causing the urea injection valve (230) to inject aqueous urea solution after the integrated value becomes greater than or equal to a reference value.
Inventors:
Suzuki Hayai
Hirohiko Ota
Hirohiko Ota
Application Number:
JP2013548669A
Publication Date:
July 22, 2015
Filing Date:
August 30, 2012
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F01N3/08; B01D53/86; B01D53/94; F01N3/20
Domestic Patent References:
| JP4179386B2 | 2008-11-12 | |||
| JP4388103B2 | 2009-12-24 | |||
| JP2012031826A | 2012-02-16 | |||
| JP4888380B2 | 2012-02-29 | |||
| JP2006097577A | 2006-04-13 | |||
| JP4179386B2 | 2008-11-12 | |||
| JP4388103B2 | 2009-12-24 | |||
| JP2012031826A | 2012-02-16 |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda