Honda Motor Co., Ltd.

Takumi Sakamoto

Shinji Kobayashi

Takuma Koishikawa

Takeshi Shimura

Yoji Fukui

Satoru Shimizu

Satoshi Okayama

Takeshi Uemae

Takashi Toriki

In a fuel cap provided with a breather mechanism, a cap openably and closably covers a fuel filler of a fuel tank. The cap includes a breather passage for communication between the inside and the outside of the fuel tank. The breather passage is provided with a breather valve mechanism and a resonator chamber as a silencing mechanism. The breather mechanism is a valve having a spring capable of retaining a pressure within the fuel tank up to a predetermined pressure.

Fuel cap provided with breather mechanism

A two-wheeled motor vehicle () provided with a throttle grip () rotated by the driver to change the degree of opening of a throttle valve (), and also with an exhaust valve () which, when a throttle ratio which is a ratio of the angle of operation of the throttle grip to the maximum rotation angle of the throttle grip is between zero and a predetermined value, reduces noise emitted from an engine.

Two-wheeled motor vehicle

Growing community of inventors

Wako, Japan

Takumi Sakamoto