Open AccessInfluence of piston-bore clearance on second motion characteristics of piston and skirt wear
Author(s) -
Xinhua Xu
Publication year - 2019
Publication title -
mechanics and industry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.256
H-Index - 18
eISSN - 2257-7777
pISSN - 2257-7750
DOI - 10.1051/meca/2018036
Subject(s) - piston (optics) , cylinder , thrust , lubrication , position sensing hydraulic cylinder , piston ring , materials science , mechanics , mechanical engineering , hydraulic cylinder , composite material , engineering , physics , chemistry , optics , ring (chemistry) , organic chemistry , wavefront
The piston dynamic simulation was carried out for the wear of the piston skirt after the test of gasoline engine. In addition, the second motion and wear are studied for the improvement proposal of different cylinder clearances. Results show when the original cylinder clearance is 0.0325–0.0575 mm, the minimum operating clearance of the piston skirt is smaller; it is not good for the formation of lubrication oil film, which causes wear on the thrust side and anti-thrust side of piston skirt. When the cylinder clearance was increased to 0.0400–0.0650 mm, the wear load on the thrust side and anti-thrust side of piston skirt was reduced by 68.3% and 68.1%, respectively, the effect of improved wear is better and the result coincides well with engine test result.