Kubota Corporation

Seiji Izuhara

Hiroshi Inoue

Yutaka Teruumi

Takeshi Kawasaki

Hiroyuki Tsuda

Noriaki Kobayashi

Koji Fujimura

Tetsushi Karasawa

A vaporized-fuel processing device for an engine stabilizes the idling operation wherein vaporized fuel within a fuel reservoir is adsorbed to an adsorbing member of a canister. While the engine is in operation, air is sucked from an air inlet into the canister with the intake-air negative pressure produced in an intake-air passage. This air separates the vaporized fuel adsorbed to the adsorbing member of the canister. Purge gas resulting from mixing the vaporized fuel into the air is sucked from a purge-gas sucking port into the intake-air passage. A throttle valve is arranged in a throttle intake-air passage of a throttle body. An intake-air pipe is disposed intake-upstream of the throttle body and is communicated with the throttle intake-air passage. The intake-air pipe has a peripheral wall to which a purge-gas sucking pipe is detachably attached. The purge-gas sucking port is provided within the purge-gas sucking pipe.

Vaporized-fuel processing device for an engine

The present invention concerns a multi-cylinder engine comprising a throttle body () in which a throttle intake-air passage () is provided. A throttle valve () is arranged in this throttle intake-air passage (). Attached to the throttle body () is an injector (), a leading end portion () of which is arranged opposite to an interior area of the throttle intake-air passage () downstream of the throttle valve () and is opened to provided a liquid-fuel injection hole (). An intake-air pressure sensor () is attached to the throttle body () together with the injector () and an intake-air pressure introduction passage () has an inlet () provided by opening an inner peripheral surface of the throttle intake-air passage () upstream of the injector ().

Multi-cylinder engine

Growing community of inventors

Sakai, Japan

Seiji Izuhara