What is the maximum efficiency of diesel engine?

What is the maximum efficiency of diesel engine?

Modern passenger car diesel engines may have an effective efficiency of up to 43%, whilst engines in large diesel trucks, and buses can achieve peak efficiencies around 45%. However, average efficiency over a driving cycle is lower than peak efficiency.

What is the basic diesel cycle?

The idealized Diesel cycle assumes an ideal gas and ignores combustion chemistry, exhaust- and recharge procedures and simply follows four distinct processes: 1→2 : isentropic compression of the fluid (blue) 2→3 : reversible constant pressure heating (red) 3→4 : isentropic expansion (yellow)

Which is better Otto or Diesel?

The diesel cycle works on four different processes which are adiabatic compression, heat addition, adiabatic expansion and then heat rejection. Heat is added at constant pressure. The overall efficiency is higher than the Otto cycle. It has a comparatively lower thermal efficiency than that of Otto cycle.

What is the key difference between Otto and Diesel cycles?

The main difference that separates these two cycles is the way they supply heat to the engine to begin the ignition. Another noteworthy difference is that the Otto cycle heat occurs at constant volume, whereas the diesel cycle works on constant pressure.

What is difference between Otto and Diesel cycle?

In Otto cycle the heat addition is takes place at constant volume where as in diesel cycle heat is added at constant pressure. Petrol engines work on Otto cycle and diesel engines work on diesel cycle.

What is the main difference between Otto and Diesel cycle?

Otto cycle is used for petrol or spark ignition engine while diesel cycle is used for diesel or compression ignition engine. The main difference between Otto cycle and Diesel cycle is that in Otto cycle heat addition takes place at constant volume and in diesel cycle heat addition takes places at constant pressure.