Fuel shut-off mechanism for internal combustion engines

In an internal combustion engine having an ignition system for igniting fuel in a cylinder, a fuel control system comprising:

• a transformer having a primary winding connected to an ignition coil of the ignition system, and having a secondary winding;
• a storage capacitor coupled to the secondary winding of said transformer;
• a normally open solenoid valve connected in a fuel path through which the fuel flows to the cylinder;
• a switch coupling said solenoid valve to said storage capacitor, said switch being closed when the engine is to stop thereby causing said solenoid valve to reduce an amount of fuel flowing to the cylinder.

In an internal combustion engine, the apparatus comprising:

• a magnet attached to a member driven by the engine;
• a coil assembly for generating electricity as the magnet passes near to said coil assembly;
• a carburetor having a bowl for fuel, a venturi and a tube for carrying fuel from the bowl to the venturi, and further having a normally open solenoid valve connected to the tube to control a flow of fuel through the tube;
• a transformer having a primary winding connected to the coil assembly, and having a secondary winding;
• a diode;
• a storage capacitor coupled in series with said diode across the secondary winding of said transformer;
• and
• a switch coupling the solenoid valve to said storage capacitor, said switch being closed to apply electricity to said solenoid valve which causes said solenoid valve to reduce an amount of fuel flowing through the tube.