Liquified petroleum gas power assisted car gas supply and control device

The liquified petroleum gas power assisted car gas supply and control device utility model relates to the field of assisted cars; the utility model is designed aiming at the assisted car which adopts gasoline to serve as fuel, generates harmful gas and pollutes environment. The device is composed of a secondary pressure reducing valve and a control valve; the secondary pressure reducing valve is integrally composed of a first stage pressure reducing valve and a second stage pressure reducing valve; high pressure liquified petroleum gas is used for pressure reducing and pressure stabilization; the control valve controls the start up, idle speed, running and stop of the assisted car; the pressure reducing valve is sealed in a parallel moving type; the start up and stop of the self-control valve of the gas valve adopts a bidirectional close type sealing structure; negative pressure adopts a nozzle structure; a diaphragm adopts an interlayer flat diaphragm; the idle speed is adjusted only by an idle needle speed valve; the enriching of a cold car adopts a built-in type, which eliminates the disadvantages of external dust getting into the engine; the needle valve and an air door are in a flexible connection; a control needle valve is a floating shaped needle valve. The start up performance, the stability and the durability of the assisted car are improved obviously; the device is also suitable for a four stroke engine of 80 CC-250 CC.