Higher efficiency - 2 stroke or 4 stroke diesel engine?

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SUMMARY

The discussion centers on the efficiency comparison between 2-stroke and 4-stroke diesel engines. Participants agree that 2-stroke diesel engines, due to their direct fuel injection and simpler mechanisms with fewer moving parts, demonstrate higher efficiency than their 4-stroke counterparts. The reference to the Wärtsilä-Sulzer RTA96-C engine highlights the practical implications of these design choices on fuel consumption and performance. Overall, the consensus is that 2-stroke engines offer significant advantages in efficiency.

PREREQUISITES
  • Understanding of diesel engine mechanics
  • Knowledge of direct fuel injection systems
  • Familiarity with engine cycle differences between 2-stroke and 4-stroke
  • Basic principles of thermodynamics as applied to engine efficiency
NEXT STEPS
  • Research the design and operational principles of the Wärtsilä-Sulzer RTA96-C diesel engine
  • Explore the advantages of direct injection technology in diesel engines
  • Study the thermodynamic efficiency calculations for 2-stroke vs. 4-stroke engines
  • Investigate the environmental impact of 2-stroke and 4-stroke diesel engines
USEFUL FOR

Engineers, automotive designers, and students in mechanical engineering who are interested in diesel engine efficiency and design optimization.

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Hi evry1!

Just wanted to know that which has got higher efficiency - 2 stroke diesel engine or 4 stroke diesel engine. I believe that direct injection of fuel in diesel engines prevents the loss of unburnt fuel in exhust of 2S engine. And simpler mechanism and lesser no. of moving parts in 2S dsl engines makes it more efficient than 4S. Am i thinking in right direction? Plz help.
 
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