Dual fuel engine with liquid fuel cut-off

A dual fuel generator comprising:

• a housing containing an engine coupled to drive an alternator, the engine operable on a gaseous fuel and a liquid fuel;
• a carburetor attached to an intake of the engine to mix air and fuel and connect to a gaseous fuel source and a liquid fuel source;
• a fuel cut-off solenoid coupled to the carburetor to regulate a flow of the liquid fuel to the engine;
• a temperature sensor positioned on or within the housing to measure an ambient temperature;
• and
• an electrical controller operably connected to the fuel cut-off solenoid to control operation thereof, the electrical controller programmed to:
• receive temperature data from the temperature sensor comprising a measurement of the ambient temperature,
• compare the measured ambient temperature with a predetermined temperature threshold, and
• when the measured ambient temperature is lower than the predetermined temperature threshold, institute a time delay after generator startup before controlling the fuel cut-off solenoid to interrupt the flow of the liquid fuel to the engine.

A dual fuel generator comprising:

• a housing containing an engine coupled to drive an alternator, the engine operable on a liquid fuel and a gaseous fuel;
• a carburetor attached to an intake of the engine to mix air and fuel and connect to a liquid fuel source and a gaseous fuel source;
• a fuel cut-off solenoid attached to the carburetor to open and close a fuel path for the liquid fuel to the engine;
• a microcontroller connected to operate the fuel cut-off solenoid and selectively close the fuel path for the liquid fuel, wherein the microcontroller is programmed to implement a delay period upon generator startup before operating the fuel cut-off solenoid to close the fuel path and interrupt a flow of the liquid fuel to the engine;
• and
• a temperature sensor connected to the housing to measure ambient temperature;
• wherein the microcontroller is programmed to:
• receive temperature data from the temperature sensor,
• compare the temperature data with a pre-determined temperature threshold, and
• when the temperature data is lower than the predetermined temperature threshold, institute a time delay after generator startup before actuating the fuel cut-off solenoid to open or close the fuel path.