Intake is anything but a steady flow.With a flowbench and then get busy with the die-grinder, it's pretty easy to get more flow, because the stock ports aren't very streamlined. The man doing the porting feels good because he's getting bigger numbers, and the customer is happy because he sees smooth, shiny ports. After all, the whole idea of the flowbench is that more flow is supposed to translate into more power; but with a engine, that relationship is weak.
Good point. In a NA more VE would be higher with higher velocity and it's duration even after BDC, allowing the valve to stay longer.Please explain the velocity benefits with 1 bar of pressure behind them
Read note in original post please:dont get confused, turbocharging an engine does not mean you're increasing VE. The efficiency will be the same with the difference that you're forcedly pumping more gas ie. the engine remains as inefficient as before, for example if the the engine pumped out 80% of what it pumped In (being NA) it will be the same or close while turbocharged (80%VE) only that the mass of gas is greater.
ok, you're not feelin' me, see if you streamline your ports and change your intake track and other mods you (if done right) make the engine more efficient. In other words, it can pump out more air than before right? because cylinders fill furthermore so increased VE.Read note in original post please:
Here's a start:
Volumetric Efficiency:* Calculating your cars volumetric efficiency
Volumetric efficiency - Wikipedia, the free encyclopedia
Turbo Engine - Wikicars
You contradicted yourself.
VE is calculated at a reference point, Ambient air density. So the reference point states the an ideal amount of mass that the combustion chamber fills. Density is mass per volume. More density, more mass, more pressure... after all, it has been compressed... don't you think it want's to uncompress itself to match equilibrium with ambient air? Even in a normal N/A motor, streamlining the ports, changing your intake track will change your VE, because you are changing how the actual air is filling the chamber.
VE = Actual Air / Ideal Air
First link is not wiki, wiki links shows connections as a general information support. Projected general information, wiki does exactly what it supposed to do. But agreed, never should be trusted solely alone. Then anything you read is the same.Besides dont always trust wikipedia man, this issue I talk to you about I read from an engine guru I think it was Corky Bell, in his book Maximum Boost if I'm not mistaken, people tend to think turbocharging = increasing VE until they talk to someone that really knows his sh*t.
Thats more or less how you get more power with an engine without forced induction. I have been quite fascinated about what might happen with over an atmosphere or pressure being forced into the engine.... does the engine realise that it has air being forced into it, or is it just that in reference to the intake manifold we've got a pretty heavy day going on?Please explain the velocity benefits with 1 bar of pressure behind them
What ?the amount of air ingested means nothing...... its actually the gasoline that explodes and creates a pressure from the expansion of gas to push the piston down that creates power