Dual Fuel Generator:
Diesel fuel has become increasingly more expensive than gas fuel, especially in countries with no oil but only gas resources. Dual Fuel combustion allows the cheaper gaseous fuel to be used instead of diesel; in addition, Dual Fuel combustion has the advantage of clear reduction of emissions. These are the main reasons for Dual Fuel conversion.
The costs of such a conversion are relatively low and they are quickly compensated by remarkable fuel savings. Another advantage is the continuous operation of the engine, even if no gas is available. In such a case the engine is running as a pure diesel engine. The precise control of diesel and gas metering ensures an optimal performance under all operating conditions.
The Dual Fuel Management systems can be used for stationary genset or compressor applications, for vehicles and different sized high- or low-speed engines. They ensure precise control in diesel mode as well as in Dual Fuel mode.
The Control System is conceived for modifying an existing diesel engine working in isolated single operation with mechanical governor to expand it into a Dual Fuel System by means of controlled gaseous fuel supply. Gas control is achieved using a digital speed governor. This will allow to retain the existing mechanical governor, and in case of failing gas supply the engine will continue to operate as a normal diesel engine. In dual fuel operation, approximately 20 to 30% of full load output is produced by the diesel component. This ensures reliable ignition of the gas mixture without having to use an additional ignition system. The rest of the engine output is produced by the variable gas share. The engine is operated with the intake duct unthrottled, and it is only the gas supply that is influenced by the gas throttle. Due to the variable gas share, an air/fuel mixture is obtained in dependence of load. With this system, genuine pilot injection operation will not be possible since in this case the diesel injection quantity cannot be controlled.
Benefits for Dual Fuel System:
. Remarkable fuel cost savings by using gaseous fuel instead of diesel
. Clear reduction of emissions
. Easy installation and commissioning
. High reliability based on proven components
. Tailored for customer needs
. Technical support and service worldwide
Features:
. Misfire detection
. Knock control
. Complete gas train with pressure regulator
. Electronic foot pedal for vehicle applications
. Remote control system SATURN
. Generator management
. Fire and gas detection system
. Applicable for diesel engines to be converted into dual/pilot fuel engines
. For different gas qualities like natural gas, sewage gas and landfill gas
. Separate governor settings for diesel, gas and transfer mode
. Fixed or variable (load dependent) diesel fuel in gas mode
. Advanced diesel-gas mode transfer sequences
. Diesel assistance for load step compensation in gas mode
. Power (kW) droop for parallel operation in gas mode
. Automatic mode selection depending on current conditions
. Automatic switch to diesel mode operation if gas supply fails
. Different sized actuators
. Differently equipped ARTEMIS Dual Fuel systems
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