Title:
ENGINE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/075189
Kind Code:
A1
Abstract:
A control device (100) performs a process including: a step (S100) for estimating a deposit amount of NOx in a NSR catalyst; a step (S104) for acquiring an engine speed (Ne) and a fuel injection amount (Q) when the deposit amount is larger than a threshold value S(0) (YES in S102); a step (S106) for changing to a reduction control mode; a step (S110) for executing reduction combustion control for all cylinders (11a) when an operation point of an engine (11) is in a first region (YES in S108); a step (S114) for executing reduction combustion control for half the cylinders and executing non-reduction combustion control for the remaining half when the operation point of the engine (11) is in a second region (YES in S112); and a step (S118) for executing cylinder stop control for half the cylinders and executing reduction combustion control for the remaining half when the operation point of the engine (11) is in a third region (YES in S116).
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Inventors:
MORI MAMOTO (JP)
Application Number:
PCT/JP2020/034542
Publication Date:
April 22, 2021
Filing Date:
September 11, 2020
Export Citation:
Assignee:
TOYOTA JIDOSHOKKI KK (JP)
International Classes:
B01D53/86; B01D53/94; F01N3/08; F02D17/02; F02D41/04
Domestic Patent References:
| WO2010128562A1 | 2010-11-11 |
Foreign References:
| JP2000161105A | 2000-06-13 | |||
| JP2008038806A | 2008-02-21 | |||
| JP2010127182A | 2010-06-10 | |||
| JP2018009487A | 2018-01-18 | |||
| JP2009036173A | 2009-02-19 | |||
| JP2007239493A | 2007-09-20 |
Attorney, Agent or Firm:
SATO Tsutomu et al. (JP)
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