Title:
多気筒内燃機関
Document Type and Number:
Japanese Patent JP6975193
Kind Code:
B2
Abstract:
To reduce the weight of a crankshaft while securing rotation balance.SOLUTION: In the case of a three-cylinder internal combustion engine, balance weights 12, 13 are arranged at a first crank arm 6 and a third crank arm 10, however, a balance weight is not arranged at a second crank arm 8. Then, by making centers of gravities 19, 20 of a crank pulley 14 fixed to one end of a crankshaft 1 and a sensing plate 17 fixed to the other end of the crankshaft 1 located at a side opposite to a protrusion direction of the second crank arm 8, the crank pulley 14 and the sensing plate 17 are made to substitute for a balance weight 21 which should be arranged at the second crank arm 8.SELECTED DRAWING: Figure 2
Inventors:
Kenji Ishimoto
Application Number:
JP2019064352A
Publication Date:
December 01, 2021
Filing Date:
March 28, 2019
Export Citation:
Assignee:
Daihatsu Motor Co., Ltd.
International Classes:
F16C3/20; F02B77/00
Domestic Patent References:
| JP2016169750A | ||||
| JP2000130181A | ||||
| JP2046309A | ||||
| JP2014227909A |
Foreign References:
| DE102009047545A1 |
Attorney, Agent or Firm:
Hiroyuki Nishi
Ryuichi Watanabe
Ryuichi Watanabe