Understanding Combustion: Exploring the Role of Charge in Engine Efficiency

It refers to the mixture of fuel and air that is compressed and ignited in the engine.'Charge' refers to the mixture of fuel and air that is compressed and ignited in the engine, according to an introductory thermodynamics book on diesel and otto cycles. In summary, combustion adds 1200kj/kg to the charge, with 'charge' referring to the mixture of fuel and oxidizer admitted to the cylinder for combustion.
  • #1
mech-eng
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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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  • #2
'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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  • #3
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.
 

Related to Understanding Combustion: Exploring the Role of Charge in Engine Efficiency

1. What is combustion and why is it important in engine efficiency?

Combustion is a chemical reaction between a fuel and oxygen that produces heat and energy. In engines, combustion is crucial because it is what powers the movement of the vehicle.

2. How does charge affect combustion and engine efficiency?

The charge, or amount of fuel and air mixture in the engine, plays a significant role in the efficiency of combustion. The right balance of fuel and air is necessary for optimal combustion and maximum power output.

3. What factors influence the charge in an engine?

The charge in an engine is influenced by several factors, including the engine design, fuel type, air intake system, and engine temperature. These factors determine the amount of fuel and air that enters the engine, affecting the combustion process and efficiency.

4. How can understanding combustion improve engine efficiency?

Understanding combustion allows engineers to optimize the fuel and air mixture in an engine, leading to more efficient combustion and improved engine performance. This can result in better fuel economy, reduced emissions, and increased power output.

5. What are some common challenges in achieving efficient combustion in engines?

Some common challenges in achieving efficient combustion include incomplete combustion, engine knock, and emissions control. These can be addressed through careful engine design, fuel quality, and advanced technologies such as direct fuel injection and variable valve timing.

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