Abstract

The tri-fuel injector is an extension of the standard dual fuel multi passage injector to cover additional fuels such as Liquid Petroleum Gas (LPG) and Naphtha at medium pumping pressure (less than 40 Bara). There is an additional passage designed for metering the LPG or Naphtha in liquid phase. The fuel system uses a non-contacting rotary pump with modern inverter technology for the pumping of these fuels. Both tri-fuel injector and fuel system are now in commercial operation on two Tornado engines using LPG, natural gas and diesel fuels. The LPG system is operating just below 30 Bara pumping pressure, and has accumulated about 1029 operating hours on the lead engine. LPG load shedding capability has been proven on one engine. Commercial operation of the Typhoon engine on Naphtha at medium pumping pressures (< 40 Bara), with an improved tri-fuel injector, will commence in the near future.

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