Importance

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Abstract

An assembly for stabilizing engine operation in an engine-generator set includes a fuel supply and fuel lines to first and second banks of engine cylinders. A fuel valve is positioned in the fuel line to the first bank of cylinders and is controlled by a normally open switch and a normally closed switch. In the closed position of the fuel valve the cylinders in the first bank act as a load on the cylinders in the second bank. The assembly includes a voltage sensor for sensing voltage generated by the engine-generator set. Once voltage exceeds a predetermined level, the sensor terminates fuel flow to the first bank. The assembly also includes a load sensor for sensing load imposed on the engine-generator set. Once the load increases above a first predetermined level, the load sensor allows flow of fuel to the first bank of cylinders and all cylinders are working. If the load drops below a second predetermined level, fuel flow to the first bank of cylinders is terminated and the cylinders in the first bank again function as a load on the cylinders in the second bank. The method of increasing engine stability includes terminating fuel flow to the first bank of cylinders upon the engine reaching operating speed with no load. As a load of a first predetermined amount or greater is placed on the engine-generator set, fuel flow is reinstated to the first bank and all cylinders are working. As load drops below a second predetermined level, flow is again terminated and the first bank of cylinders functions as a load on the second bank.

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First Claim