Title:
可変圧縮比内燃機関及びその学習方法
Document Type and Number:
Japanese Patent JP6372617
Kind Code:
B2
Abstract:
A variable compression ratio internal combustion engine is equipped with a variable compression ratio mechanism (10) capable of changing an engine compression ratio in accordance with a rotational position of a control shaft (14), and a housing (22) that accommodates therein a drive motor (20) for changing and holding the rotational position of the control shaft (14). A reference position of the control shaft (14) is learned in a state where a position of maximum rotation of the control shaft (14) in a first rotational direction (R1) has been mechanically restricted by bringing a first movable part (51), which operates in conjunction with the control shaft (14), into abutted-engagement with a first stopper (52). The first stopper (52) is provided outside of an engine body. Subsequently, a maximum conversion angle range of the control shaft is learned in a state where a position of maximum rotation of the control shaft in a second rotational direction has been mechanically restricted by a second stopper.
Inventors:
Kazuhiko Okamoto
Eiji Takahashi
Ryosuke Hiyoshi
Eiji Takahashi
Ryosuke Hiyoshi
Application Number:
JP2017524514A
Publication Date:
August 15, 2018
Filing Date:
June 25, 2015
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
F02B75/04; F02B75/32; F02D15/02
Domestic Patent References:
| JP2012251446A | ||||
| JP2012132345A | ||||
| JP2006226133A | ||||
| JP2011169152A | ||||
| JP2013253512A |
Attorney, Agent or Firm:
Hiromichi Kobayashi
Tomioka Kiyoshi
Tomioka Kiyoshi