Compression Ignition Engines: Converting kmol/kmol to kmol/kg Fuel

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SUMMARY

This discussion focuses on converting fuel measurements for compression ignition engines from kilomoles per kilomole (kmol/kmol) to kilomoles per kilogram (kmol/kg). The conversion involves dividing the kmol/kmol values by the molecular weight of dodecane, which is 165 g/mol. The specific values discussed are 115.954 kmol/kmol and 120.204 kmol/kmol, which convert to 0.7027 kmol/kg and 0.7285 kmol/kg, respectively. This straightforward division clarifies the relationship between these units in the context of fuel measurement.

PREREQUISITES
  • Understanding of molecular weight and its significance in chemical conversions
  • Familiarity with the concept of kilomoles as a unit of measurement
  • Basic knowledge of compression ignition engine operations
  • Proficiency in unit conversion techniques in chemistry
NEXT STEPS
  • Research the molecular weight of various fuels used in compression ignition engines
  • Learn about the thermodynamic properties of dodecane and its applications
  • Explore advanced unit conversion methods in chemical engineering
  • Investigate the performance characteristics of compression ignition engines with different fuel compositions
USEFUL FOR

This discussion is beneficial for chemical engineers, automotive engineers, and students studying fuel properties and combustion processes in compression ignition engines.

VooDoo
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Hey guys,

Just trying to understand this piece of information I have been given. It is for a compression ignition engine.

I can see where they get the 115.954 kmol/kmol fuel and 120.204 kmol/kmol fuel from but don't understand how to change the units 0.7027 kmol/kg fuel and 0.7285 kmol/kg fuel. They seem to divide kmol/kmol fuel by 165...but don't know why.

http://img245.imageshack.us/img245/1729/chemyf4.jpg
 
Last edited by a moderator:
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They're converting from kilomoles to kilograms, so they're dividing by the molecular weight of dodecane (165 g/mol).
 
ahh thanks a lot! Cant believe it was that simple
 

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