Title:
INTERNAL COMBUSTION ENGINE CONTROL DEVICE AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2014/185124
Kind Code:
A1
Abstract:
A basic target compression ratio calculating unit (21) finds a basic target compression ratio (btCR) from a demand load (tT) and an engine speed (Ne). When component temperatures (Tem, Tes), which are calculated by a component temperature calculating unit (23) from the exhaust temperature (Texh) detected by an exhaust temperature sensor (8), are higher than respective threshold values, a basic target air-fuel ratio (btAF) is corrected by a target air-fuel ratio correcting unit (24) and the amount of fuel is increased. Thus, because knocking does not occur easily, at the same time a target compression ratio (tCR) is corrected to the high pressure ratio side. Because the exhaust temperature decreases due to thermal efficiency being improved by a high compression ratio, the exhaust temperature can be reduced by a relatively small increase in the amount of fuel.
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Inventors:
TAKAHASHI EIJI (JP)
Application Number:
PCT/JP2014/055729
Publication Date:
November 20, 2014
Filing Date:
March 06, 2014
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
F02D15/02; F02D15/04; F02D41/04
Foreign References:
| JP2012145045A | 2012-08-02 | |||
| JP2011236803A | 2011-11-24 | |||
| JP2005163741A | 2005-06-23 | |||
| JP2004060551A | 2004-02-26 | |||
| JP2009185669A | 2009-08-20 |
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
Hiromichi Kobayashi (JP)
Hiromichi Kobayashi (JP)
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