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When specifying generators, one of the first considerations is which fuel to use, whether its a diesel generator or a natural gas generator. Generac provides a solution that combines the advantages of both natural gas and diesel fuels. Bi-Fuel is the simultaneous combustion of natural gas and diesel fuel in a single engine.
Bi-Fuel is the perfect application for large installations that operate for extended periods, producing prime or continuous power. Combining diesel fuel with natural gas in bi-fuel operation provides several benefits compared to only diesel generator or natural gas generator systems. Major benefits include:
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Extended run time capabilities
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Reduced diesel fuel storage requirements
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Lower acquisition cost per kW compared to spark-ignited engines
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Improved reliability with redundant fuel supply
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Reduced maintenance costs
Generac’s bi-fuel engine generators offer a distinct cost advantage over more complex low pressure or high pressure injected natural gas generator engines, both in terms of initial capital investment and replacement part costs.
 How does Generac’s Bi-Fuel System work? The natural gas delivery system and controls are installed on a typical diesel generator engine. The engine initially starts on 100% diesel fuel and when the load is applied, the system adds natural gas to the combustion air stream. The natural gas/air mixture enters the engine, ignites and provides additional power. The engine governing system then automatically scales back on diesel fuel injection.
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