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Natural gas is promising alternative fuel to meet strict engine emission regulations in many countries. Compressed natural gas (CNG) has long been used in stationary engines, but the application of CNG as a transport engines fuel has been conside rably advanced over the last decade by the development of lightweight high-pressure storage cy linders. Engine conversion technology is well established and suitable conversion equipment is re adily available. For spark ignition engines there a re two options, a bi-fuel conversion and use a dedicat ed to CNG engine. For compression ignition engines converted to run on natural gas, there are two main options discussed, there are dual-fuel engines and normal ignition can be initiated. Natur al gas engines can operate at lean burn and stoichiometric conditions with different combustion and emission characteristics. In this paper, the CNG engines research and development fueled using CNG are highlighted to keep the output power, torque and emissions of natural gas engines compara ble to their gasoline or diesel counterparts. The high activities for future CNG engines research and development to meet future CNG engines is recorded in the paper.
Semin et al. (Tue,) studied this question.
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