Title:
THREE-CYLINDER VARIABLE-COMPRESSION-RATIO INTERNAL COMBUSTION ENGINE, AND METHOD FOR DESIGNING THREE-CYLINDER VARIABLE-COMPRESSION-RATIO INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2019/150150
Kind Code:
A1
Abstract:
This three-cylinder variable-compression-ratio internal combustion engine includes a variable compression ratio mechanism, a first balance mass (13) provided to a crank pulley (11), and a second balance mass (14) provided to a drive plate (12). The variable compression ratio mechanism uses a multi-link piston crank mechanism with which the compression ratio can be changed. The crank pulley (11) and the drive plate (12) operate integrally with a crank shaft (6). The first balance mass (13) and the second balance mass (14) are tuned according to a target compression ratio during idling so as to reduce the vibration of the internal combustion engine during idling. The three-cylinder variable-compression-ratio internal combustion engine according to the present invention can reduce vibration during idling when a driver is more likely to be aware of said vibration.
More Like This:
| JPS5759027 | PISTON ENGINE |
| JPS5710701 | INTERNAL COMBUSTION ENGINE |
| WO/2004/005683 | ECOLOGICAL TWO STROKES INTERNAL COMBUSTION MOTOR |
Inventors:
TOJO TOMOYA (JP)
NAKAMURA KATSUTOSHI (JP)
NAKAMURA KATSUTOSHI (JP)
Application Number:
PCT/IB2018/000156
Publication Date:
August 08, 2019
Filing Date:
February 01, 2018
Export Citation:
Assignee:
NISSAN MOTOR (JP)
RENAULT SAS (FR)
RENAULT SAS (FR)
International Classes:
F02B75/32; F02B75/04
Foreign References:
| JP2012062796A | 2012-03-29 | |||
| JP5351977B2 | 2013-11-27 | |||
| JP2014227909A | 2014-12-08 | |||
| JP2000130181A | 2000-05-09 |
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
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