Massive Yet Tiny Diesel Engine

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Sep 11, 2008 | 05:28 AM

#46

Kwikkordead

Fleet Owner

Joined: Jun 2004

Posts: 25,090

Likes: 1,112

From: Rio Rico, AZ.

Quote:

Originally Posted by monsterbaby

Oh and also just for you information the vortec 4200 DOES have an egr, just not a specific valves. They use electronically controlled valve timing to set the overlap so that a calculated amount of exhaust gas is pulled back into the cylinder on the intake stroke instead of running it through a seperate egr valve. This technology had to be approved by EPA to show that they could meet the egr requirement without a seperate valve.

So there is your answer about how it is mandated and what you THINK is an engien without one.

Sorry epa DOES mandate equipment irrespective of what comes out the tailpipe

This is also a MUCH better way to achieve EGR on a diesel because it won't fill up the intake manifold with soot from the recirculation. Just leave a little bit (or a lot) behind in the combustion chamber and the goal is achieved.

Sep 11, 2008 | 08:22 AM

#47

bfloyd4445

Laughing Gas

Joined: Aug 2005

Posts: 1,156

Likes: 10

From: Drain Oregon and Sacramen

Quote:

Originally Posted by Lead Head

Really, if EGR is mandated, then how come the GMC Vortec 4200 engine does not have one? The only thing the EPA cares about is that if it meets emissions requirements.

EGR is not mandated it just happens to be the easiest way to meet the emmission requirments. EPA dosen't tell the manufacturer what device to use it just sets limits and then the manufacturer is left to find a way to comply with those emission standards.

Sep 11, 2008 | 10:48 AM

#48

monsterbaby

Hotshot

Joined: Dec 2003

Posts: 18,423

Likes: 9

From: iowa

Quote:

Originally Posted by bfloyd4445

wrong. IF things like egr were not mandated the states to do real emissions testing wouldn't do visual inspections. IF you were even remotely close CA wouldn't fail a car before it even put the sniffer in the tail pipe but I promise you they can and they will.

It's also why it's against federal law to tamper with, disable or remove any emissions control device on a vehicle EVEN if you actually can show a reduction in tailpipe emissions.

You really might want to do a little research. EGR, Catalytic converters among other things ARE mandated by EPA regulations (techinaclly it's not a law because under the constitution ONLY the elected legislative branch can make laws everyone else just makes rules.)

Example of how wrong you are is just recent, EPA did NOT tell the diesel manufactures what the limits on particulate emissions where they mandated a particulate filter had to be used. That was why even though they didn't exist at all 8yrs ago several companies where put into overdrive to invent one to meet the EPA requirement.

Sep 11, 2008 | 12:46 PM

#49

Markadeck

Gone, but not forgotten

Joined: Oct 2005

Posts: 5,026

Likes: 2

From: Charlotte-Fairbanks-Bflo

Quote:

Originally Posted by SVT03

http://http://stream.osen.org/aag/MYT-La-Auto-Show.wmv

click ^^^

Any of you guys ever heard of this engine? It is an awesome design and is claimed to get atleast 150mpg! I would like to swap one of these bad boys in the old superduty... probly the only truck built well enough to hold all that power! 4000lbft @3000rpm!!!

This link work for any of you? Did not with Firefox, but I will try with IE and see what happens.