Effects of temperature/pressure on power output

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SUMMARY

The discussion centers on optimizing power output from a 6.2L GM LS V8 engine using a non-engine powered air supply at 3 bar and 40°F. Key considerations include the management of excess air through relief valves, the utilization of Variable Valve Timing (VVT) and direct injection for enhanced combustion efficiency, and the regulation of air flow. Historical experiments by Mickey Thompson and a dragster in Don Garlit's museum highlight the challenges faced in this approach, particularly regarding weight and flow regulation of air supply vessels.

PREREQUISITES
  • Understanding of VVT (Variable Valve Timing) systems
  • Knowledge of direct injection technology
  • Familiarity with air supply dynamics in internal combustion engines
  • Basic principles of turbocharging and supercharging
NEXT STEPS
  • Research the impact of air temperature and pressure on engine performance
  • Explore advanced tuning techniques for VVT and direct injection systems
  • Investigate flow regulation methods for non-engine air supply systems
  • Study historical case studies of air-powered drag racing engines
USEFUL FOR

Engineers, automotive performance enthusiasts, and researchers focused on optimizing internal combustion engines, particularly those interested in innovative air supply methods and advanced fuel injection strategies.

spiveycool
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How much power would be produced when using an independently powered supply of 100 pound/min air at 3bar/40F air on a 6.2L GM LS V8. Excess air will be vented to atmosphere with relief valves to stabilize the air flow to the throttle valve.
What are the factors need to be considered when planning to optimize engines to be operated under these conditions.
What factors would be unique to using non engine produced air supply under this these conditions.
I am interested in exploring how to take full advantage of the VVT and direct injection on the upcoming Corvette DI engine. VVT may allow intake air flow to sweep and cool the combustion chamber under boost.
With no fuel in the chamber on the compression stroke the timing of injection and spark can be manipulated in many new ways.
What is possible with this new hardware?
 
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The weight of the vessels that provide the air is a consideration but the biggest thing is how to regulate the flow.

There is a dragster in Don Garlit's florida museum in which they tried it but the car had other teething issues that doomed it.

florida065.jpg


Mickey Thompson also experimented with it and it was possibly used in a drag car driven by Danny Ongais.

I tossed this idea when going to using a small turbine to power the supercharger but there are tons of hurdles to solve.
 

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