US 11,834,973 B2
Oil case and method for manufacturing oil case
Tatsuya Kuroda, Wako (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Appl. No. 17/312,101
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
PCT Filed Dec. 17, 2018, PCT No. PCT/JP2018/046400
§ 371(c)(1), (2) Date Jun. 9, 2021,
PCT Pub. No. WO2020/129132, PCT Pub. Date Jun. 25, 2020.
Prior Publication US 2022/0025791 A1, Jan. 27, 2022
Int. Cl. F01M 11/00 (2006.01); B63H 20/24 (2006.01); B63H 20/28 (2006.01); F01N 3/04 (2006.01); F01P 3/20 (2006.01); F02B 61/04 (2006.01)
CPC F01M 11/0004 (2013.01) [B63H 20/24 (2013.01); B63H 20/28 (2013.01); F01N 3/04 (2013.01); F01P 3/202 (2013.01); F02B 61/045 (2013.01); F01P 2060/00 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An oil case of an outboard motor, the oil case being provided below an internal combustion engine and storing a lubricating oil of the internal combustion engine, the oil case comprising:
an oil chamber that stores the lubricating oil;
a lead-in path that guides, to an upper side, cooling supply water that has been taken in from outside of the outboard motor;
a lead-out path that guides, to a lower side, cooling discharge water that has cooled the internal combustion engine;
a main exhaust path that guides an exhaust gas of the internal combustion engine to the lower side; and
a subsidiary exhaust path that guides the exhaust gas during low-speed rotation of the internal combustion engine,
wherein the oil chamber, the lead-in path, the lead-out path, the main exhaust path, and the subsidiary exhaust path form an integral structure, and
the lead-out path is arranged between the subsidiary exhaust path and the main exhaust path.