How Does Friction Impact Car Engine Performance Across Different Speeds?

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SUMMARY

This discussion focuses on the impact of friction on internal combustion engine performance across varying speeds. Key factors include the weight of the piston and the torque generated by its movement. The conversation highlights the need to understand how friction influences engine efficiency at different RPMs and the relationship between torque and frictional force. The participants seek clarity on calculating torque from RPM and determining the frictional force that must be overcome for optimal engine operation.

PREREQUISITES
  • Understanding of internal combustion engine mechanics
  • Knowledge of torque and RPM relationships
  • Familiarity with friction force calculations
  • Basic principles of thermodynamics as they apply to engine performance
NEXT STEPS
  • Research "Calculating Torque from RPM in Internal Combustion Engines"
  • Study "Friction Force Calculations in Mechanical Systems"
  • Explore "Effects of Piston Weight on Engine Performance"
  • Investigate "How Engine Speed Affects Friction and Efficiency"
USEFUL FOR

Automotive engineers, mechanical engineers, and students studying internal combustion engines who are interested in optimizing engine performance and understanding the role of friction in engine dynamics.

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I really don't know how I would start to work this, but here is my problem...

I need to be able to determine the effects friction has on internal combustion engines, but as I said before, I don't know what to do to start.

I think that the weight of the piston and the torque generated by the turning of the piston would affect this, but I'm not sure. Also, there are no really particular speeds that I need to know this for, but more for a range of speeds, to determine how friction acts when a car is moving faster or slower.
 
Last edited:
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Just looking up some more info, which unmasked a few more questions...

If I knew the rpm, could I find the torque?
How would I find the force of friction that the torque needed to overcome to keep the engine running?
 

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