View Single Post
Old 10-11-2012, 09:58 PM   #38 (permalink)
cRiPpLe_rOoStEr
It's all about Diesel
 
cRiPpLe_rOoStEr's Avatar
 
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 12,923
Thanks: 0
Thanked 1,697 Times in 1,515 Posts
Quote:
Originally Posted by serialk11r View Post
Actually this is a pretty good idea. Running at a single speed should make scavenging a pretty simple affair (I guess you might have to adjust for air density differences, but I think that's not a big issue if you allow some reasonable amount of trapped exhaust). Have cam actuated valves, fuel injection of course, and a very high static compression ratio. If you really want to chase down the last bit of friction rods can be lightened since they don't have a strong load reversal and thus fatigue resistance requirements.

GM is good friends with Eaton, they can surely strike up a deal for some superchargers with better rotor sealing for scavenging purposes.
The main advantage I see in a 2-stroke gasser is the absence of a valvetrain, which leads to a lighter and more compact cylinder head design, and also decreasing the demand for maintenance.

As far as superchargers go, it wouldn't be so bad if GM started to make 2-stroke Diesels again, but something more efficient and with a better power-to-weight ratio than the older Detroits. With current VGT developments it could even have some reasonable improvements in engine-braking.
  Reply With Quote