Search Results

Cogeneration (also combined heat and power, CHP) systems have become widely used in recent years for reasons such as efficient use of energy resources and CO₂ emissions reduction. As a power source in cogeneration, gas engines are widely used. Large gas engines have a different ignition system from those in medium-sized and small ones. To burn the fuel mixture to the cylinder wall, many large gas engines (2MW or more outputs) with wide cylinder-bore have a pre-chamber. Flame jets from the pre-chamber enable rapid combustion of super lean mixtures throughout the cylinder walls, achieving improved heat efficiency. In contrast, many medium-sized to small gas engines (less than 2 MW outputs) have a general and simple open-chamber, in which a flame kernel produced by the electric spark of a spark plug ignites the mixture in the combustion chamber.