View Single Post
Old 01-04-2012, 07:00 AM   #17 (permalink)
jakobnev's Avatar
Join Date: Oct 2010
Location: sweden
Posts: 1,542

Princess - '92 Mazda MX-3 GS
House of Tudor
Team Mazda
90 day: 53.54 mpg (US)

Shirubāarō (*ω`*) - '05 Toyota Prius Executive
Team Toyota
90 day: 54.88 mpg (US)

Blue Thunder - '20 Hyundai IONIQ Trend PHEV
Team Hyundai
Plug-in Hybrids
Thanks: 68
Thanked 629 Times in 399 Posts
Send a message via MSN to jakobnev
Originally Posted by mechman600 View Post
How about a tank of helium? Maybe helium injection would raise the exhaust note to a higher pitch. It works when I talk after sucking on a helium balloon. The higher pitched exhaust sounds would be like getting free extra RPMs.
It would actually work as an alternative to variable geometry intake and exhaust systems. You could start with Xenon-Oxygen mix for low rpms and gradually go to Helium-Oxygen mix for hight rpms. Pity making the mixes isn't practical.

Maybe using carbon rich fuels for low rpm and hydrogen rich fuels for high rpm would have some effect.

2016: 128.75L for 1875.00km => 6.87L/100km (34.3MPG US)
2017: 209.14L for 4244.00km => 4.93L/100km (47.7MPG US)
  Reply With Quote