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Patent Searching and Data


Title:
INTERNAL COMBUSTION ENGINE CONTROL METHOD AND CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/109819
Kind Code:
A1
Abstract:
The present invention has: a variable compression ratio mechanism (10) for changing an engine compression ratio according to the rotational position of a control shaft (14); a driving motor (20) that rotationally drives a rotary shaft (23); and a linking mechanism (21) for mechanically linking the control shaft (14) with the rotary shaft (23). The linking mechanism (21) has a reduction ratio (attenuation ratio) that is the ratio of the rotational amount of the rotary shaft (23) and the rotational amount of the control shaft (14), and that changes according to the rotational position of the control shaft (14). Permissible in-cylinder pressure is set, which is a permissible limit pressure in a combustion chamber of an internal combustion engine. The permissible in-cylinder pressure at an engine compression ratio where the reduction ratio becomes low is set lower than that at an engine compression ratio where the reduction ratio becomes high.

Inventors:
TAKAHASHI, Eiji (Intellectual Property Department, 1-1, Morinosatoaoyama, Atsugi-sh, Kanagawa 23, 〒2430123, JP)
Application Number:
JP2016/086981
Publication Date:
June 21, 2018
Filing Date:
December 13, 2016
Export Citation:
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Assignee:
NISSAN MOTOR CO., LTD. (2 Takara-cho, Kanagawa-ku Yokohama-sh, Kanagawa 23, 〒2210023, JP)
International Classes:
F02D15/02; F02B75/32
Foreign References:
JP2013253512A2013-12-19
JPS61187561A1986-08-21
JP2008223669A2008-09-25
JP2009108730A2009-05-21
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (Ekisaikai Bldg. 1-29, Akashi-cho, Chuo-k, Tokyo 44, 〒1040044, JP)
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