Title:
CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE AND COMBUSTION CHAMBER WALL TEMPERATURE ESTIMATION METHOD
Document Type and Number:
WIPO Patent Application WO/2018/116994
Kind Code:
A1
Abstract:
In a control device for an internal combustion engine and combustion chamber wall temperature estimation method according to the present invention: the difference between an estimated combustion chamber wall temperature value and a detected cooling water temperature value obtained at the beginning of fuel cut is calculated; an integrated value of intake air amount after the fuel cut began is calculated; the difference data is reduced with increase in the integrated value of intake air amount; an estimated combustion chamber wall temperature value during the fuel cut is calculated on the basis of a detected cooling water temperature value and the difference data; and ignition timing and fuel injection amount are corrected on the basis of the estimated wall temperature value when the supply of fuel is resumed.
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Inventors:
TOYAMA YUICHI (JP)
SAKAGUCHI SHIGEYUKI (JP)
MURAI ATSUSHI (JP)
SAKAGUCHI SHIGEYUKI (JP)
MURAI ATSUSHI (JP)
Application Number:
PCT/JP2017/045192
Publication Date:
June 28, 2018
Filing Date:
December 15, 2017
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F02D45/00; F02D15/02; F02D41/12; F02D41/32
Domestic Patent References:
| WO2016084188A1 | 2016-06-02 |
Foreign References:
| JP2012026372A | 2012-02-09 | |||
| JP2007278096A | 2007-10-25 | |||
| JPH0771304A | 1995-03-14 | |||
| JP2004353490A | 2004-12-16 |
Attorney, Agent or Firm:
OGAWA, Moriaki et al. (JP)
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