A
Anonymous
Guest
this may be a question from a stupe but what is compression ratio
: ( I think I have an idea :| )and how does it effect performance
: ( I have no an idea 
)
this may be a question from a stupe but what is compression ratio
: ( I think I have an idea :| )and how does it effect performance
: ( I have no an idea )
A
Anonymous
Guest
It's the (idealised) ratio of chamber pressure when at TDC to atmospheric pressure.
Correct me if I'm wrong, but AFAIK it's worked out by the formula
PV=nRT
or assuming T, n, R are constant, and normal letters are initial states and italics are final states,
PV=PV, P=PV/V
where you know
P (atmospheric), V (chamber volume + displacement for each cyl.), V (chamber volume) and want to find P.
and then CR is
P/P
Correct me if I'm wrong, but AFAIK it's worked out by the formula
PV=nRT
or assuming T, n, R are constant, and normal letters are initial states and italics are final states,
PV=PV, P=PV/V
where you know
P (atmospheric), V (chamber volume + displacement for each cyl.), V (chamber volume) and want to find P.
and then CR is
P/P
