Gas engine fast start fuel strategy

A method of priming a fuel system for an engine system having a throttle valve configured to regulate a flow of air and fuel into an intake manifold of an engine having a plurality of cylinders, the method comprising:

• supplying air and fuel to an inlet of the throttle valve;
• directing fuel from a fuel source through an auxiliary fuel line to a primed cylinder subset of the plurality of cylinders, wherein the auxiliary fuel line is not fluidly connected to a non-primed cylinder subset that comprises the plurality of cylinders that are not in the primed cylinder subset;
• determining a value of an engine parameter, and
• closing an auxiliary fuel valve disposed in the auxiliary fuel line and ceasing directing fuel through the auxiliary fuel valve to the primed cylinder subset when the value of the engine parameter is greater than or equal to a threshold engine parameter value.

A genset comprising:

• an electric generator;
• an engine system configured to drive the generator and including:
• an engine mechanically coupled to the generator and configured to combust a fuel from a fuel source to rotate the generator,
• a throttle valve having an inlet and an outlet and configured to regulate a flow of air and fuel to an intake manifold of the engine,
• a first sensor configured to generate a first sensor signal indicative of a value of an engine parameter,
• an auxiliary fuel line configured to direct fuel from the fuel source to a primed cylinder subset of a plurality of cylinders of the engine, wherein the auxiliary fuel line is not fluidly connected to a non-primed cylinder subset that comprises the plurality of cylinders that are not in the primed cylinder subset, and
• an auxiliary fuel valve disposed in the auxiliary fuel line;
• and
• a controller in communication with the first sensor and the auxiliary fuel valve, wherein the controller is configured to close the auxiliary fuel valve and cease directing fuel from the auxiliary fuel line to the primed cylinder subset when the value of the engine parameter is greater than or equal to a threshold engine parameter value.