Knowledge of Helmholtz Resonators
Knowledge of Helmholtz Resonators
(OP)
I am interested in designing helmholtz resonators to amplify the pressure in the intake and exhaust systems of 4 cycle internal combustion engines. Does anyone know of a good contact on this subject?





RE: Knowledge of Helmholtz Resonators
You would probably be better off to look at using a half wave tuner as an amplifying device.
Cheers
Greg Locock
RE: Knowledge of Helmholtz Resonators
I believe the common method used to tune intake and exhaust systems is to vary the length to cause resonance. The diameter must be kept within certain limits in order to both keep velocity and momentum up, while not causing excessive pressure drop.
RE: Knowledge of Helmholtz Resonators
A quarter wave tuner uses the phase effect as its primary method of attenuation, as such its bandwidth is less controllable, and generally narrower.
Cheers
Greg Locock
RE: Knowledge of Helmholtz Resonators
http://grapeaperacing.com/GrapeApeRacing/tech/intakehelmholtz.htm