What Does Charge Mean in Engine Efficiency and Combustion?

Click For Summary
SUMMARY

The term "charge" in the context of engine efficiency and combustion refers specifically to the mixture of fuel and oxidizer that is admitted into the cylinder of a reciprocating engine for combustion. In the discussion, it is noted that combustion contributes 1200 kJ/kg to this charge, highlighting the energy added during the combustion process. This definition is grounded in the principles outlined in introductory thermodynamics, particularly in relation to diesel and Otto cycles.

PREREQUISITES
  • Understanding of reciprocating engine mechanics
  • Basic principles of thermodynamics
  • Knowledge of diesel and Otto cycles
  • Familiarity with energy units, specifically kJ/kg
NEXT STEPS
  • Study the principles of reciprocating engine operation
  • Explore the thermodynamic cycles of diesel and Otto engines
  • Learn about combustion chemistry and its impact on engine performance
  • Investigate energy conversion efficiency in internal combustion engines
USEFUL FOR

This discussion is beneficial for mechanical engineers, automotive engineers, and students studying thermodynamics or engine design, particularly those interested in combustion processes and engine efficiency.

mech-eng
Messages
826
Reaction score
13

Homework Statement


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

Homework Equations





The Attempt at a Solution

 
Physics news on Phys.org
'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?
 
  • Like
Likes   Reactions: 1 person
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.
 

Similar threads

Work and heat transfer in internal combustion engine
  • · Replies 5 ·
Replies
5
Views
5K
Engineering Charge Redistribution in a Capacitor Bank/DAC
  • · Replies 22 ·
Replies
22
Views
5K
Is My Internal Combustion Engine Efficiency Too Low? A Table Analysis
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad What role does Quantum Mechanics play in a internal combustion engine?
  • · Replies 6 ·
Replies
6
Views
2K
How Does Fuel Composition Affect Combustion Efficiency and Steam Generation?
  • · Replies 9 ·
Replies
9
Views
9K
Thermodynamics.... Constant volume pressure of combustion
  • · Replies 33 ·
2
Replies
33
Views
9K
Equilibrium Stability: Finding Charge Stability
  • · Replies 9 ·
Replies
9
Views
2K
Engineering Circuits Question -- Charging a car battery in 4 hours....
  • · Replies 9 ·
Replies
9
Views
4K
A practical way to vaporize fuel for high MPG?
  • · Replies 39 ·
2
Replies
39
Views
5K
Internal combustion engine calculation questions
  • · Replies 9 ·
Replies
9
Views
3K