Which limitation arises when operating a diesel engine at extremely low load conditions?

💡 Explanation

When a diesel engine runs at very low load, the compression temperature drops because less fuel is injected per cycle reducing peak temperature rise. This reduces combustion efficiency due to slower kinetics, causing incomplete combustion that leads to increased engine emissions. Therefore incomplete combustion occurs, rather than detonation or lubricant issues which occur at high loads.

• Which risk increases when thermal losses impede the refrigeration cycle of food storage?
• Which process limits Carnot engine efficiency operating between fixed temperature reservoirs?
• Which risk increases when a fluid's non-dimensional number exceeds design limits?
• Which mechanism limits the switching speed improvements from decreasing capacitance of integrated circuit transistors?
• Which consequence results when supercritical carbon dioxide's enthalpy change vanishes in a turbine?
• Which mechanism underlies the operation of fiber-optic gyroscopes using counter-propagating laser beams?