Diesel Engine Transient Operation

The most attractive feature of the compression ignitio (diesel) engine is its 

excellent fuel efficiency, which can surpass 40% in vehicular applications and even 

50% in large, two-stroke units of marine propulsion or electrical generation. 

Consequently, vehicles equipped with diesel engines achieve much lower specific 

fuel consumption and reduced carbon dioxide emissions than their similarly rated 

spark ignition counterparts over the entire operating range, resulting also in 

considerable money savings over the vehicle’s lifetime. Moreover, diesel engines 

are characterized by low sensitivity in terms of air–fuel ratio variations, absence of 

throttling, high torque and high tolerability in peak cylinder pressures and 

temperatures that favors the application of various 

supercharging schemes

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