Australasian Mining Review
Issue link: http://ebook.aprs.com.au/i/37922
319 A ComAp Dual-fuel Conversion will substantially reduce your diesel engine operating costs whilst maintaining, or even reducing service intervals. A ComAp Dual-fuel Conversion enables a standard diesel engine to operate on gas and diesel without any mechanical modification. Gas is the main fuel and diesel is used for the ignition of the gas/ air mixture inside the engine cylinder. Substituting diesel for gas can reduce diesel consumption up to 90% - a significant saving on your annual diesel bill. Benefits include • substantial savings on operating costs • short time to recover initial investment • output power remains unchanged, with the characterisics of diesel • can return to 100% diesel without shutting down the engine • lower emissions • suitable for heavy fuel engines • solutions available for both low and high speed engines Adelaide Perth 08 8177 0333 08 9209 3895 Brisbane Auckland 07 3350 4594 09 550 6020 Big diesel bill? Dual Fuel Conversions The fi nancial savings that can be made through converting a diesel engine to a dual-fuel system, (diesel and natural gas) can be signifi cant, with return on investment periods of often less than one year. As an added benefi t, this conversion is achieved without all the normal problems associated with gas engines and with a minimum down time for your business. Greenbird Technology and ComAp have many years experience in the conversion of both high and low speed diesel engines to dual-fuel using unique, in-house designed, high-speed gas valves for gas injection into the individual cylinders. They also design and manufacture electronic control systems for dual fuel engines based on the highly successful InteliGen range. How Does Dual-Fuel Work? Duel-Fuel operation means the diesel engine is converted to use two fuels, natural gas and diesel at the same time. Natural gas is main fuel and a small diesel portion is used for the ignition of the gas/air mixture inside the cylinder. With the ComAp system, the components of the engine are not changed so that it is a relatively simple conversion to perform. The system continuously monitors key engine parameters to adjust gas fl ow rates at high speed _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ issue 2.2 to introduce exactly the required quantity of gas into each cylinder. The diesel engine requires no internal mechanical modifi cations and the engine can return to 100% diesel operation at any time without needing to shut down. Why the ComAp System is Different There are other systems available, but they usually require mechanical modifi cations to the engine and critically, don’t dynamically adjust to the engine’s needs. As the load on the engine changes, the gas requirement also changes, and this ability to respond is a key feature of the ComAp system. Alternative systems use a fi xed gas/diesel ratio for a certain engine load, so that outside of this window the engine becomes less effi cient, or even in extreme cases, can be damaged. This has led to a poor reputation in the marketplace for dual fuel conversions, but the ComAp system bares no resemblance to these inferior systems. ComAp is so confi dent about their system, that they guarantee their system against causing any engine damage.