Originally Posted by

**moogan**
I'm currently doing a project, working towards a degree in engineering and i'm not too sure if equation can be used or not.

I need to describe the effect of adding more air into an internal combustion engine and thought to use the equation pV=nRt.

Taking the volume of the cylinder, the constant for air and the temperature as constant (as the engine is not being modified, just the air intake is increasing)

re-aranging to give p=(nRt)/v

can i then increase n (as the higher intake increases the number of moles) to prove that pressure will increase?

or does this mean that volume will also change?

or am i way of the mark and this equation is not suited to this situation?