What Does Charge Mean in Engine Efficiency and Combustion?

AI Thread Summary
In the context of engine efficiency and combustion, "charge" refers to the mixture of fuel and oxidizer that is introduced into the engine cylinder for combustion. The discussion highlights that combustion adds 1200 kJ/kg to this charge, indicating the energy contribution from the combustion process. The term is commonly used in relation to reciprocating engines, particularly in the study of diesel and Otto cycles. Understanding the charge is crucial for analyzing engine performance and efficiency. The explanation emphasizes the importance of this concept in thermodynamics and engine design.
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Homework Statement


combustion adds 1200kj/kg to the charge.
what is the meaning of " charge" here.

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The Attempt at a Solution

 
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'Charge', especially w.r.t. reciprocating engines, usually means the mixture of fuel and oxidizer admitted to the cylinder for combustion. Can you be more specific about what context you found this phrase?
 
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SteamKing said:
'Charge', especially w.r.t. reciprocating engines, usually means the mixture of fuel and oxidizer admitted to the cylinder for combustion. Can you be more specific about what context you found this phrase?


I found this phrase from an introductory thermodynamics book,on the chapter about diesel and
otto cycles.
 
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