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Missouri University of Science and Technology
<p>Internal combustion engines<br />Combustion gases -- Testing</p>
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The Effect Of Back Pressure Created By A Venturi Tube On Power Output And Efficiency Of An Internal Combustion Engine, James J. Trace
The Effect Of Back Pressure Created By A Venturi Tube On Power Output And Efficiency Of An Internal Combustion Engine, James J. Trace
Masters Theses
"The exhaust pressure against which an engine works affects the amount of pumping losses, the volumetric efficiency and the rate of advance of the flame front during the combustion process.
When the back pressure is decreased to the same pressure as the intake pressure, the amount of negative work done during the exhaust-intake process approaches the positive work done during the process. It can be seen from a PV diagram that it is possible to make this negative work less than the positive work and gain work during the process.
Because of the "15 to 30 degrees” of intake valve …