Which outcome occurs when diesel fuel injector nozzle hole size is reduced in direct injection engine?

💡 Explanation

When hole size is reduced, fuel atomization improves because higher injection pressures are required for the same flow rate, causing finer droplets and better mixing, leading to higher peak cylinder pressure. Therefore higher cylinder peak pressure results, rather than PM, NOx, or consumption changes which depend on different thermodynamic effects.

• Which outcome occurs when a binary refrigerant mixture leaks from a refrigeration system?
• Cracking parallel to rebar in a concrete slab during humid conditions indicates which mechanism?
• Which consequence results when sustained harmonics overload a power transformer autotransformer compensating reactive power in electricity grid circuit?
• Which outcome occurs when bleed air demand increases during a turbofan engine's operation?
• Which outcome occurs when differential thermal expansion over-stresses a ceramic insulator in a high-voltage DC transmission line?
• Which outcome occurs when engine oil supply to a turbocharger bearing is interrupted during high-speed operation?