And winner of generalised blanket statement of the year with little evidence goes to.....godlameroso wrote: it's easy to tell because their engine note is deeper pitched than all the others, meaning they're already running less timing advance than other engines.
You are ignoring the turbocharger turbine completely. A different design turbine may dampen higher frequency noises more so therefore it may sound deeper to you.godlameroso wrote:Listen to the Renault engine and all the others, the only real difference is in the wastegate plumbing and the exhaust manifolds, the exhaust pipe after the turbo is pretty much the same for everyone. So the only things that could be causing a deeper pitch is a.)different ignition timing(i.e. more retarded than others), or b.)mis-timing of the exhaust pulses in the manifold/collector(I doubt they'd mess this up). The wastegate shouldn't affect the pitch of the exhaust note under normal circumstances.
Perhaps different charge air cooling would influence ignition timing as well, which would make sense since each team designs their own intercooler piping, and radiators for engine cooling. Again these things would affect engine note by allowing different degrees of timing based on the efficiency of the cooling system, also fuel would affect this as well.
The different sound of the Renault engine is mostly down to the Turbo layout, manifold length and the wastegate.trinidefender wrote:You are ignoring the turbocharger turbine completely. A different design turbine may dampen higher frequency noises more so therefore it may sound deeper to you.godlameroso wrote:Listen to the Renault engine and all the others, the only real difference is in the wastegate plumbing and the exhaust manifolds, the exhaust pipe after the turbo is pretty much the same for everyone. So the only things that could be causing a deeper pitch is a.)different ignition timing(i.e. more retarded than others), or b.)mis-timing of the exhaust pulses in the manifold/collector(I doubt they'd mess this up). The wastegate shouldn't affect the pitch of the exhaust note under normal circumstances.
Perhaps different charge air cooling would influence ignition timing as well, which would make sense since each team designs their own intercooler piping, and radiators for engine cooling. Again these things would affect engine note by allowing different degrees of timing based on the efficiency of the cooling system, also fuel would affect this as well.
Each engine does use different exhaust manifolds, that will change the sound of the exhaust.
Can somebody please explain to me how me wanting Mario to be able to throw his companies full development resources behind Renault's efforts to produce a competitive PU for all Renault powered teams is worthy of a down vote?djos wrote:Let's hope they used the money to write Ilmor a really large check!
Uhhhm.... last year the Merc was by far the deepest. so dId it have..... inefficient combustion ? I'm not doubting the overall assertion, just the route by which you got there.godlameroso wrote:Their problem has been inefficient combustion, it's easy to tell because their engine note is deeper pitched than all the others, meaning they're already running less timing advance than other engines. Can't blame them really, I don't think they've invested nearly as much as the other engine manufacturers have. Right now I imagine they're desperately trying improve their combustion concept as well as engine cooling as it seems that's their real weakness.
I wonder if Renault took the money they were spending in sponsoring Red Bull and re-invested it in their engine program.
Yeah French girls are pretty nice, and the accent is a real knee weakener too!mclaren111 wrote:It was the wonderful French ladiesdjos:
They must have been really big fans of French food, wine and art to invade them twice in the space of 50 years
I think he meant in 2014, when the Mercedes used a log exhaust.godlameroso wrote:It was not the deepest, well I'll let you get a good listen then you can come to your own conclusions.
https://www.youtube.com/watch?v=KnJtsZz ... 13&index=1