| 摘要 |
PURPOSE:To feed rich fuel-air mixture only during the initial stage of the starting, by a method wherein the jet of solenoid valve of an independent starting fuel system controlled by duty ratio is increased in size, and air bleed, fed to the jet, is fed to the downstream of an opening valve during complete explosion in response to a negative pressure. CONSTITUTION:A jet 5, opened and closed by a solenoid valve 2 controlled by duty, is mounted in an independent starting fuel passage 6 through which fuel-air mixture for the starting is fed. A complete explosion piston 8, opened by negative pressure by a negative pressure during complete explosion of an engine, is located up a flow line from the jet 5. A water temperature switch 12 and a solenoid valve 10, opened until a switch 11, which is switched ON by means of a given low negative pressure before complete explosion, is closed, are located in an air passage down a flow line from the complete explosion piston 8. Rich fuel-air mixture for the initial stage of the starting and fuel-air mixture till complete explosion, being further lean than that during the initial stage of the starting, are properly used individually from each other, and during complete explosion, the fuel for the starting, being further lean in fuel-air mixture, is fed through release of the piston 8. |
