US 11,746,724 B2
Method for preventing accumulation of cylinder oil at scavenging ports of low-speed marine engine
Liyan Feng, Liaoning (CN); Min Pan, Liaoning (CN); Wenjing Qu, Liaoning (CN); Zhen Gong, Liaoning (CN); Zhengran Yu, Liaoning (CN); Hongjie Sun, Liaoning (CN); Zixin Wang, Liaoning (CN); and Qiang Liu, Liaoning (CN)
Assigned to DALIAN UNIVERSITY OF TECHNOLOGY, Liaoning (CN)
Appl. No. 17/310,358
Filed by DALIAN UNIVERSITY OF TECHNOLOGY, Liaoning (CN)
PCT Filed Dec. 17, 2019, PCT No. PCT/CN2019/125858
§ 371(c)(1), (2) Date Feb. 22, 2022,
PCT Pub. No. WO2020/155897, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 201910088172.1 (CN), filed on Jan. 29, 2019.
Prior Publication US 2022/0186677 A1, Jun. 16, 2022
Int. Cl. F02F 1/20 (2006.01); F02F 1/22 (2006.01); F01M 11/02 (2006.01)
CPC F02F 1/20 (2013.01) [F01M 11/02 (2013.01); F02F 1/22 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for preventing accumulation of cylinder oil at scavenging ports of a marine engine, comprising:
removing cylinder oil through a plurality of oil passages on a cylinder wall inside a cylinder;
wherein:
the cylinder comprises a plurality of scavenging ports spaced apart in a circumferential direction of the cylinder, and each oil passage comprises an oil storage groove disposed about an upper edge of a corresponding scavenging port;
the oil storage groove obliquely extends from an inner side of the cylinder wall towards an outside of the cylinder in a radial direction of the cylinder; and
two adjacent oil storage grooves are tangentially connected with each other at a connection point.