restrictor plate vs surgeline
02-27-2009, 04:27 PM
#1
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restrictor plate vs surgeline how will an inlet restrictor plate change the boost surge line on the left side of a compressor map ?
it will obviously move it to the left, but is there a way to determine how much ?
say for instance the supercharger needs to flow 300lb/min at 50.000rpm
or 300lb/min at 2.4 pressure ratio
could that be accieved with a correct restrictor ?
it will obviously move it to the left, but is there a way to determine how much ?
say for instance the supercharger needs to flow 300lb/min at 50.000rpm
or 300lb/min at 2.4 pressure ratio
could that be accieved with a correct restrictor ?
02-27-2009, 05:24 PM
#2
It won't move the surge line. It will change your P/R, as it is seeing vaccum in front of the compressor instead of Atmospheric pressure. So if your motor is seeing the same boost, you are seeing a higher Pressure Ratio than before, because your compressor is working harder.
02-27-2009, 05:51 PM
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well i don't completely agree with that. 
if say: i am at a 2.2 pressure ratio with 350lb/min
that is in the compressor surge area of the graph.
now when i restrict it and you say all it does is drop pressure ratio, this would mean it now falls outside the surge area and into a more workable area , so it does sort of change the surge characteristics of the supercharger
or am i missing something ?
if say: i am at a 2.2 pressure ratio with 350lb/min
that is in the compressor surge area of the graph.
now when i restrict it and you say all it does is drop pressure ratio, this would mean it now falls outside the surge area and into a more workable area , so it does sort of change the surge characteristics of the supercharger
or am i missing something ?
