Dual fuel operation means the engine uses two fuels (gas and diesel oil) at the same time, as opposed to Bi Fuel which would mean the engine could have the option of using either fuel separately.

Common conversion features

  • Substantial savings on operation costs
  • Practically no engine modification required
  • Non-derated output power
  • Fuel flexibility: Possibility of bi-fuel or original pure diesel operations
  • Safe operations.
  • Lower emissions
  • Longer engine life span, longer service and maintenance intervals


It depends on the technical state of the engine, especially of the injection system. The typical Diesel / Gas ratio is 40/60% for the high-speed engines. If the operating output of the engine is constant and between 70-80% of nominal output, than it is possible to reach up to 30/70% ratio. If the operating output is lower (for example 50% of the nominal output) or if there are variations, the rate is about 45/55% (more of diesel is used). Generally, it is not possible to guarantee an exact diesel/gas ratio without a test being done after the conversion.