Variable venturi type carbureter

Abstract

Abstract PURPOSE: To prevent the dilution of fuel, by obviating the growth of vapor bubbles by mounting a throttle portion to a fuel inducing hole that a needle of this horizontal needle system variable venturi type carbureter advances or retreats and by opening a fuel passage to the throttle portion. CONSTITUTION: A suction piston 15 shifting by the negative pressure of a venturi 11 is horizontally arranged while a needle 18 fixed to the piston 15 is moved in a fuel inducing hole 12. A throttle portion 13 is disposed to an approximate, central portion of the inducing hole 12, and a fuel passage 20 communicated with a float chamber 19 is opened to the throttle portion 13. Thus, fuel vapor bubbles abundantly formed when long idling in case of high temperatures are interrupted by means of the throttle portion 13, and escape to the inducing hole 12 can be prevented. COPYRIGHT: (C)1980,JPO&Japio

Inventors

• 👤 Takaaki Itou
• 👤 Norihiko Nakamura

Bibliographic Details