WHAT IS HYBRID/DUAL FUEL TECHNOLOGY?
Hybrid/Dual Fuelling System is an innovative retrofit technology that allows liquid-fired engines to operate on a mixture of liquid fuel and Natural Gas. This is achieved through the use of technologies that are installed externally of the engine.
A hybrid/Dual Fuel System delivers Natural Gas to the cylinders via Air-Gas Mixer located in the standard engine air-intake system. The Gas is then ignited by a diesel “pilot” that acts as an ignition source for the air-gas mixture.
The system requires precise regulation and control of the fuel supply gas. The Hybrid/Dual Fuel System is supplied with a “gas train” consisting of a gas filter, zero-pressure gas regulator, and electrically activated gas solenoid valve. The gas train is designed to accept low-pressure gas and supply regulated gas to the engine at slightly negative pressure.
Hybrid/Dual Fuel solution has been designed for operation both on Manual and Automatic mode through the “State of Art Electronic Controller”. This has been done for ease of operation as per the availability of PNG etc.
The State-Of-The-Art controller monitors critical engine and Dual-Fuel System parameters and activates/ deactivates gas mode according to programmed limits. It provides safety to the engine, while operating in the Dual-fuel mode.
Conversion allows the engine to operate on gas mixtures ranging from 50% upto 70% + of total fuel consumed. Engines converted to Dual-fuel exhibit diesel-like performance in critical areas as efficiency, stability and load acceptance.
The compatible Fuel Gases are – Pipeline natural gas (PNG); Coal-bed Methane (CBM); Compressed natural gas (CNG); Bio-gas (landfill, wastewater); Liquefied natural gas (LNG); wellhead gas.
Hybrid/Dual Fuel solution has been developed as fully integrated solutions with critical components sourced from European suppliers like Dungs, Germany.
In case of eventuality PNG supply is stopped, the sensors on sensing low PNG pressure gives signal to Controller and it automatically reverts the engine to 100% diesel operation irrespective of PNG settings or load condition.
The Changeover from Hybrid/Dual Fuels to 100% Diesel Fuel is seamless and without effecting the operation of DG set and neither it requires action by the Engineer. When the PNG supply is resumed, then the Engine automatically reverts to its predefined settings of PNG+Diesel.
The performance of DG Set in terms of Efficiency, Load bearing capacity, Stability, Reliability is not effected and remains the same as before.
