[DeTomaso] NPC Anyone know much about the GM direct injection300 HP V6

[Ken Green]

I wasn't very clear on when the injection takes place, in one article it sounded like it could be near TDC on the compression stroke, and used a high pressure pump.  Also one article said there was no throttle body, and another showed one (good ole Internet).  All in all, it's interesting.  If nothing else, if new cars get 40 MPG, there is more oil left for our toys.
 
I hope we don't get spoiled by cheap gas.  It's extremely vital to our national interests that oil stays below $60 or so, because it keep the oil $s from building the Russian military and Iranian nukes, etc.  If we get back into an arms race, it may cost a lot more than developing energy technology.
 
Ken


--- On Wed, 12/17/08, Larry - Ohio Time Corp <larry at ohiotimecorp.com> wrote:

From: Larry - Ohio Time Corp <larry at ohiotimecorp.com>
Subject: RE: [DeTomaso] NPC Anyone know much about the GM direct injection300 HP V6
To: kenn_green at yahoo.com, detomaso at realbig.com, JDeRyke at aol.com
Date: Wednesday, December 17, 2008, 11:09 AM

Ken,

After reading the wiki it is saying that the injector shot is going in
during the intake stroke, unlike a diesel that happens on the compression
stroke, so why do you need a fancy high pressure pump?

Larry - Cleveland

-----Original Message-----
From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
Behalf Of Ken Green
Sent: Wednesday, December 17, 2008 1:23 PM
To: detomaso at realbig.com; JDeRyke at aol.com
Subject: Re: [DeTomaso] NPC Anyone know much about the GM direct
injection300 HP V6

Here is some more on direct injection, it sounds pretty interesting:
 
http://en.wikipedia.org/wiki/Gasoline_direct_injection
 
With all the companies casting after market heads, and making after marker
ECUs, this could be an option in the future.  
 
Ken


--- On Tue, 12/16/08, JDeRyke at aol.com <JDeRyke at aol.com> wrote:

From: JDeRyke at aol.com <JDeRyke at aol.com>
Subject: Re: [DeTomaso] NPC Anyone know much about the GM direct injection
300 HP V6
To: kenn_green at yahoo.com, detomaso at realbig.com
Date: Tuesday, December 16, 2008, 9:42 PM

In a message dated 12/16/08 3:11:40 PM, kenn_green at yahoo.com writes:

> I was told that this engine is cleaner and makes more HP than non-direct 
> injection motors.  So is this another major step in engine evolution, big
or 
> small?
> 
Maybe. It works like a diesel in that fuel is sprayed directly into the 
chamber at around 1200-1600 psi and only air goes thru the intake & past
the 
valves. The only real 'breakthru' is sealing a high pressure gasoline
pump that can 
be mass-produced. This was the stumbling block for decades- the mid-'50s 
Mercedes gullwings had direct injection fuel pumps with internal clearances 
measured in angstroms.... In any case, D.I. engines are un-modifiable by you
& I, so 
personally, I'm not interested in yet another hands-off black-box.
Expecting 
the Gov't to seal all street engines any day now. Sigh- J Deryke 


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