Aisan Kogyo Kabushiki Kaisha

Toyota Jidosha Kabushiki Kaisha

Aisan Industry Co., Ltd.

Yukinori Isoya

Norihiko Nakamura

Takaaki Itoh

Takashi Katou

Masatami Takimoto

Mitsuyoshi Teramura

Toshikatsu Hada

In a variable venturi type carburetor having a slow speed system, a fuel vapor conduit is provided, an inlet of which is open to a main fuel passage, an outlet of which is open to an intake passage. Fuel vapor occurring in the main fuel passage is carried through the fuel vapor conduit, so as not to be introduced into a slow fuel passage; thereby, the engine is rotated stably with a relatively lean air-fuel ratio.

Variable venturi type carburetor

A variable venturi carburetor for an internal combustion engine in an automobile comprising means for insulating heat transmitted from a carburetor body to a fuel well defined in a main fuel jet of the carburetor. The heat insulating means is provided at the outside of the main fuel jet as surrounding the same.

Variable venturi carburetor

A variable venturi carburetor comprising an air passage provided in a suction piston, a needle mounting member provided at the head portion of the suction piston for mounting a fuel metering needle and an air discharging member provided at the needle mounting member, wherein the air passage communicates the air intake passage upstream of a venturi portion with the needle mounting member and is communicated with the venturi portion through the air discharging member.

Disclosed herein is a variable venturi carburetor for an internal combustion engine in an automobile comprising an air passage provided in the suction piston for communicating the inlet of the air intake passage with the base portion of the fuel metering needle and an air discharge portion provided in the fuel metering needle for communicating the air passage with the venturi portion.

Growing community of inventors

Nagoya, Japan

Yukinori Isoya