| 摘要 |
PURPOSE:To make an air-fuel ratio constant, by compensating a degree of Venturi suction pressure according to air density, in case of a device which controls a rate of fuel flow according to Venturi suction pressure. CONSTITUTION:In case of a device 11 which controls fuel flow ranging from a fuel chamber 13 to a fuel nozzle 10 with suction pressure out of a Venturi tube 4, an atmospheric intake port 22 is installed in a Venturi suction pressure passage 21, and opening of this atmospheric intake port 22 is varied into stepless by a self-operated regulating valve 23 tightly attached to a bellows 24. With this constitution, in all running ranges of an engine, an air-fuel ratio can be made constant. |
