Title:
AUXILIARY FUEL SUPPLY DEVICE OF CARBURETTOR
Document Type and Number:
Japanese Patent JPH01121556
Kind Code:
A
Abstract:
PURPOSE:To make proper increase of fuel easily in a wide rate-of-flow range by opening and closing a fuel control valve according to the duty ratio, and by closing an air control valve at the time of cranking. CONSTITUTION:Aux. fuel passage 5 is furnished with a fuel pump 6, pressure adjuster 7, solenoid driven fuel control valve 8, and a jet 9 in the sequence as named, while an air passage 10 is equipped with an air control valve 11 and a jet 12 and connected with the aux. fuel passage 5, An electronic control circuit 13 receives input of parameters for the engine operating condition and emits appropriate drive signals. The fuel control valve 8 is opened and closed by drive signal of pulse wave in specified duty ratio from the electronic control circuit 13. The air control valve 11 operates in accordance with the suction pipe neg. pressure, being fixed to the valve closing position with suction pipe neg. pressure at the time of cranking and to the valve opening position with suction pipe neg. pressure at the time of self-rotation.
Inventors:
ISHIKAWA NORIKAZU
Application Number:
JP27792587A
Publication Date:
May 15, 1989
Filing Date:
November 02, 1987
Export Citation:
Assignee:
NIPPON CARBURETER
International Classes:
F02M1/08; F02M1/14; (IPC1-7): F02M1/08; F02M1/14
Attorney, Agent or Firm:
Nozawa Mutsumi