Title:
EXHAUST PURIFICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/022689
Kind Code:
A1
Abstract:
Provided is an exhaust purification device comprising: a basic injection amount determination unit 44 that determines a basic injection amount on the basis of the inlet temperature of a diesel oxidation catalyst (DOC) 21, an exhaust gas flow rate, and a target temperature for the outlet temperature; a first estimation unit 46 that estimates temperature change in the outlet temperature on the basis of a response model; an inlet temperature processing unit 42 that advances a delay in the response from when a change occurs in a supply amount to when the outlet temperature changes in the response model relative to the inlet temperature and outputs the result to the basic injection amount determination unit 44; a second estimation unit 47 that estimates the outlet temperature on the basis of a response model for the outlet temperature relative to change in the inlet temperature; a feedback calculation unit 49 that determines a corrective injection amount for resolving deviation between the outlet temperature and an estimated outlet temperature based on the estimated temperature change in the outlet temperature and the estimated outlet temperature; and a regeneration control unit 41 for controlling so that an intra-exhaust pipe injection device 23 is made to output a control injection amount obtained by adding the basic injection amount and the corrective injection amount.
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Inventors:
NAKANO FUTOSHI (JP)
Application Number:
PCT/JP2016/072412
Publication Date:
February 09, 2017
Filing Date:
July 29, 2016
Export Citation:
Assignee:
ISUZU MOTORS LTD (JP)
International Classes:
F01N3/36; F01N3/025; F02D41/04; F02D41/14; F02D45/00
Foreign References:
| JP2012062811A | 2012-03-29 | |||
| JP2012072666A | 2012-04-12 | |||
| JP2005315198A | 2005-11-10 | |||
| JP2015048780A | 2015-03-16 | |||
| US20100300070A1 | 2010-12-02 |
Attorney, Agent or Firm:
HIBIYA Yukihiko et al. (JP)
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