plenum volume

[Samy]

hey i have to decide plenum volume and i am using ricardo wave to simulate for the same. what i got is as i increase plenum volume from 1.2L to 9.2L torque curve gets smooth at higher RPM range but more fluctuations at low rpm range and lowest torque gets more low. How throttle response (pick-up) depends on plenum volume? i have decided around 6 L. can anybody sugest correct approach before manufacturing.

[Samy]

hey i have to decide plenum volume and i am using ricardo wave to simulate for the same. what i got is as i increase plenum volume from 1.2L to 9.2L torque curve gets smooth at higher RPM range but more fluctuations at low rpm range and lowest torque gets more low. How throttle response (pick-up) depends on plenum volume? i have decided around 6 L. can anybody sugest correct approach before manufacturing.

[Charlie]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Samy:
can anybody sugest correct approach before manufacturing. </div></BLOCKQUOTE>

Yes, physical testing in order to validate your simulation results

[BrendonD]

I've never touched the software, but I'll go a step further and give you a hint that throttle response is inversely proportional to plenum volume, and you will have drivability problems with a plenum that large.

A 6L plenum would have a nice smooth curve though! Best of luck.

[SamB]

Have you thought about the actual RPM range of your car (not the engine)? And at what range will you be spending the majority of your time? Just think about the value each benefit has on the running of the car before fixing a volume.