Understanding Diesel Engine Cycles and Revolutions

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SUMMARY

The discussion focuses on the operational mechanics of diesel engines, specifically detailing that each cycle in a four-stroke diesel engine requires two revolutions of the crankshaft and involves six cylinders. The four-stroke cycle consists of air intake, compression, combustion, and exhaust, while a two-stroke engine achieves similar processes in a single revolution. Understanding these cycles is crucial for calculating engine power and efficiency.

PREREQUISITES
  • Four-stroke diesel engine mechanics
  • Two-stroke engine operation
  • Crankshaft revolution concepts
  • Basic thermodynamics related to combustion
NEXT STEPS
  • Research the relationship between cylinder count and engine power output
  • Study the differences between four-stroke and two-stroke engine cycles
  • Explore diesel engine performance optimization techniques
  • Learn about the thermodynamic principles governing the diesel cycle
USEFUL FOR

Engineers, automotive technicians, and students studying mechanical engineering or automotive technology will benefit from this discussion on diesel engine cycles and their implications for engine performance.

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Homework Statement



In a diesel engine each cycle takes two revolutions and there are 6 cylinders.

Homework Equations



what does " each cycle takes two revolutions" mean and are there a relation or equation between
cylinder number and calculation of engine power?

The Attempt at a Solution

 
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In the four-stroke diesel cycle, it takes two revolutions of the crankshaft to:
1. Draw in the air for combustion. (piston goes down)
2. Compress the air (piston goes up)
3. Fuel ignites and expands (piston goes down)
4. Exhaust combusted fuel from the cylinder (piston goes up).

There is also a two-cycle process, where all of the above can be accomplished during one revolution of the crankshaft.

http://en.wikipedia.org/wiki/Diesel_cycle

http://en.wikipedia.org/wiki/Two-stroke_engine

http://en.wikipedia.org/wiki/Four-stroke_engine
 
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