Title:
CONTROL METHOD AND CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2017/002254
Kind Code:
A1
Abstract:
The problem addressed by the present invention is that, for instance, during an acceleration transition in which the required load rises, if boost pressure rises before the mechanical compression ratio drops, thereby producing a high-load state, knocking may occur and cylinder pressure may rise excessively. The present invention is provided with a variable compression ratio mechanism that can vary the mechanical compression ratio, a turbo supercharger (2) that supercharges intake air using exhaust energy, and an exhaust bypass valve (7) that serves as a boost pressure adjustment mechanism to adjust boost pressure. The mechanical compression ratio is detected by a control shaft sensor (34) and the boost pressure is restricted on the basis of this mechanical compression ratio.
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Inventors:
TAKAHASHI EIJI (JP)
Application Number:
PCT/JP2015/069094
Publication Date:
January 05, 2017
Filing Date:
July 02, 2015
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
F02D23/00; F02D15/02; F02D41/04
Foreign References:
| JP2008002328A | 2008-01-10 | |||
| JP2005155507A | 2005-06-16 | |||
| JP2007162592A | 2007-06-28 |
Other References:
See also references of EP 3318739A4
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
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