Some pretty neat stuff.

http://world.honda.com/HDTV/news/2003-4031127a/

Also I hear that GM is working on a V8 with this same type deal with DoD. Should be interesting to see this technology saturate the market in the next few years.

 

Huh? Link isnt working for me. Is this the new Honda Accord engine with IMA and DoD? GM has this on there trucks now.

 

Hmmm...it works for me

No its a new 2.0L Vtec engine with an extreme lean-burn. Not the Accord engine...This isn't in any production vehicles yet.

GM doesn't have any Direct Injection engines in production right now do they?

 

I belive that the High Feature V6's, 2.8 and 3.6, have the ability for direct injection, as do ecotecs, but no direct injection cars for GM vehicles outside of some Suzuki's.

 

What does the term 'direct' injection imply? I thought all fuel injection was direct.

Also, did you guys catch that part about injection during the compression stroke?!

It's too bad that data is in metrics though.

 

Direct injection is squrting fuel directly into the cylinder, not into the intake manifold.


As for the conversions, they work out to 36MPG and 155HP. However, that MPG was in the Stream minivan. (http://www.tiscali.co.uk/motoring/ro...streamrear.jpg)

 

I'd like to know what kind of material the pistons are composed of. Wouldn't an AFR of 65:1 make for an extremely hot burn

 

Isuzu had direct injection on their 3.5L V6 in some of their models. Boosted HP by 20 and gained a mile in fuel economy in both city and highway.

 

No. The combustion temps peak some where around 15.7:1 and then start to come back down.

 

They run like diesels (except they are still spark ignited). Overall lean burn, because the combustion happens in a "kernel" localized about where the fuel is physically located in the cylinder. So the overall ratio can be very lean (just like a diesel), but where the actual flame front is, the ratio is closer to stoichiometric.

Isuzu has a DI engine out already, and I think Audi/VW is going to have one over here for the '05 MY. Others, of course, are also working on it.

 

Cool...thanks for the info guys.

 

GM has been saying that the Ecotec is DI & VVT compatable for about 4-5 years. So when are they going to build a DI model? we will just finnaly be getting VVT on the 2.4L Ecotec in May '05