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    • 7. 发明专利
    • FUEL SAVING METHOD AND ITS UNIT
    • JPS57131854A
    • 1982-08-14
    • JP1827581
    • 1981-02-10
    • NAKAGAWA ISAO
    • NAKAGAWA ISAO
    • F02M25/022F02M23/08
    • PURPOSE:To reduce the volume of a mixed gas flowing in from a carburetor and save the consumption of fuel by directly supplying an ambient air into an inlet manifold of an engine automatically during constant speed drive. CONSTITUTION:When acceleration is accomplished and a setting speed is attained, a warning contact 21 is turned on and a relay 20 is turned on. At the same time, an accelerator pedal is so lightly stepped on for constant speed drive that a limit switch 23 is turned on. If the pressure of air inside an air tank 11 is sufficient, an air switch 19 is switched on and an electric current flows to a relay 16, turning on vacuum switches 12 and 13. The diaphragm of vacuum diaphragm type valves 8 and 9 are drawn in from an inlet manifold 6 through air pipes 15 and 14, thereby opening the diaphragm valves 8 and 9 and supplying an ambient air to the inlet mainfold 6. Therefore, the comsumption of fuel can be reduced.