Post by: SachsGS on March 26, 2012, 03:58:01 PM
This leads me into the new Ossa 300 enduro which apparently has DI, or more accurately, hybrid direct injection.It has transfer port injection, like the Bombardier,plus a crankcase injector which delivers a small amount of premix to the crankcase for lubrication and cooling.A compromise yes, and most things in life are a compromise, but a form of direct injection nonetheless.
So,it seems, we have a direct injected offroad 2T.
My apologies to Dirt Bike - the new Ossa is DI.
Post by: opfermanmotors on March 26, 2012, 04:55:43 PM
Post by: opfermanmotors on March 26, 2012, 04:59:49 PM
Post by: citabjockey on March 26, 2012, 07:05:29 PM
Seriously, no pipe armor is necessary on that bike, +1
Ossa looks like a pretty cool bike. The only thing that freaks me out is the exhaust being under the seat!
Post by: opfermanmotors on March 26, 2012, 07:48:29 PM
Just saying, that's how I look at things, not everything will always be sealed 100%properly!
Post by: citabjockey on March 26, 2012, 08:07:40 PM
I recently read a Cycle World article and in it the author talked about the problems Bombardier encountered in developing direct injection such as,for example, crankcase overheating.The article also discusses how the injector(s?) are located in the transfer ports and are timed to the closing of the exhaust port.
This leads me into the new Ossa 300 enduro which apparently has DI, or more accurately, hybrid direct injection.It has transfer port injection, like the Bombardier,plus a crankcase injector which delivers a small amount of premix to the crankcase for lubrication and cooling.A compromise yes, and most things in life are a compromise, but a form of direct injection nonetheless.
So,it seems, we have a direct injected offroad 2T.
My apologies to Dirt Bike - the new Ossa is DI.
Post by: SachsGS on March 27, 2012, 12:08:21 AM
Post by: TMKIWI on March 27, 2012, 07:18:30 AM
Buy the time BRP took over most were sorted and then they improved on it alot more.
All ETEC systems are proper DI.
Combustion Injection.
Post by: opfermanmotors on March 27, 2012, 02:10:29 PM
Post by: cnrcpla on March 27, 2012, 02:13:08 PM
Post by: citabjockey on March 27, 2012, 04:26:23 PM
In this month's Cycle World that's what the author said (transfer port injection). If you think about it, it shouldn't really matter in principle when (or where) the fuel air charge enters the combustion chamber as long as the exhaust port is "reasonably" closed.
Post by: Kodackamera on April 17, 2012, 09:16:13 PM
Very exciting to see this, never give up the fight for 2 strokes.
Nice looking girl too, someone give her the key to fire it up!!
Post by: LukeDuke25 on May 06, 2012, 01:27:14 PM
Post by: 2STROKEREVOLUTION on July 19, 2012, 12:07:09 AM
I recently read a Cycle World article and in it the author talked about the problems Bombardier encountered in developing direct injection such as,for example, crankcase overheating.The article also discusses how the injector(s?) are located in the transfer ports and are timed to the closing of the exhaust port.
This leads me into the new Ossa 300 enduro which apparently has DI, or more accurately, hybrid direct injection.It has transfer port injection, like the Bombardier,plus a crankcase injector which delivers a small amount of premix to the crankcase for lubrication and cooling.A compromise yes, and most things in life are a compromise, but a form of direct injection nonetheless.
So,it seems, we have a direct injected offroad 2T.
My apologies to Dirt Bike - the new Ossa is DI.
The original Dirt Bike article about Ossa was about their trials bike, where they wrote in big letters on the cover "Diret Injected 2-strokes are here". But the trials bike is NOT DI. It is crankcase injected. The enduro is, like you said, hybrid. It is DI + crankcase injected.
First I wonder, is the fuel going into the crank pure fuel and they also have oil injection? Or is all the fuel pre mix? Hopefully oil injection.
Now, I have never heard of BRP having overheating issues. I looked it up on the Ski-Doos and didn't see anything. And those things are putting out 200hp/L.
I do like the transfer port direct injection. Especially as seen on the Athena. You keep the simple cylinder head with no big injector on top. And you can still get cheap head mods!
Post by: 2STROKEREVOLUTION on July 19, 2012, 12:08:17 AM