Honda Motor Co., Ltd.

Keijiro Koide

Shinji Shimoyama

Koji Sato

Masahiro Kato

Shigekazu Tanaka

Naoki Hotta

Yusuke Fukada

Tatsuki Tanaka

Miyo Kitamura

Shuji Komatsu

Ichiro Fukuzawa

Takumi Tokinoya

Tatsuya Kurimoto

The present invention relates to a reservoir tank for coolant that stores the coolant for cooling an internal combustion engine. The reservoir tank includes: a tank chamber that stores the coolant; an opening, which is disposed in an upper part of the tank chamber, through which the coolant flows in and flows out, and in a circumferential wall of which a breathing hole is formed; and a first communication passage, a second communication passage, and a third communication passage that respectively communicate with the opening and the tank chamber.

Reservoir tank for coolant

An expansion tank, includes: a tank main body defining a storage chamber storing a coolant liquid therein; multiple partition walls provided in the tank main body to divide the storage chamber into multiple division chambers including an inlet chamber and an outlet chamber, the partition walls being formed with communication holes for bringing adjacent ones of the division chambers into communication with each other; a coolant liquid inlet portion that is provided on the tank main body and is open to the inlet chamber; a coolant liquid outlet portion that has an outlet opening in a depression formed in a bottom of the tank main body and is open to the outlet chamber; and a barrier wall extending from a side wall of the tank main body or one of the partition walls into the depression.

Expansion tank

An internal combustion engine includes: a cylinder head (); a combustion chamber recess () formed in the cylinder head; an intake passage () and an exhaust passage () formed in the cylinder head and communicating with the combustion chamber recess; a head oil passage () formed in the cylinder head, and having a first end (A) communicating with an oil pump () and a second end (B) opening out at a sliding contact surface of a valve actuating mechanism () provided in the cylinder head; and an oil jacket () formed in the cylinder head in a path of the head oil passage so as to at least partly surround the exhaust passage.

Internal combustion engine

Growing community of inventors

Saitama, Japan

Keijiro Koide