[bmk10]

Not sure if I zoned out in class or what but I'm completely blanking on how to do number 3. Anybody have an idea??
Thanks!

 

[alwaysinagm]

FYI - you've calculated the volume of one cylinder in #1, there are 8. As for #3, the volume calculated in #1 would be displaced/'pumped' every RPM if it was a 2-stroke. Since this is a 4-stroke, the volume from #1 would only be displaced/'pumped' every other RPM...so the answer to #3 is equal to

(one cylinder's volume) x 8 x (5000 / 2)

 

[bmk10]

How'd I do?
On #3 when it asks how much air is pumped in one min does that make a difference or is the equation you gave me still correct?

 

[Hogg]

RPM = revs per minute or revolutions/minute,

Thats fine, but do you understand whats happening there? Its best when showing your work if you leave in all your units so you can double check after you are done.


You could be a smart-ass and give an answer of "impossible" as the engine wouldnt be running at all, since its pumping only air and no outside influence is stated in te equestion.

peace
PAuly