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PointedThree :  Vans, Trucks, SUVs and Other Forums : G-Class : POWER INCREASE FOR 617 ENGINE

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POWER INCREASE FOR 617 ENGINE
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Posted 4/3/2007 8:16 PM
MazWest
Veteran




Date registered: Apr 2006
Location: Benelux
Vehicle(s): E220T, 250GD LWB Wolf
Posts: 180
100
Re: POWER INCREASE FOR 617 ENGINE

Chad,

Thank-you for the very informative link. That is a very well written article with a lot of defined and varied information.
I don't pretend to know all the technical aspects of Biodiesel, I just know the "seat of the pants" results which I have experienced. Maybe the results that someone else experiences with Biodiesel will be different. I can only speak for myself.
In any event, I get a warm fuzzy knowing that I'm not reliant on foreign imports for my fuel.

Have a nice day,
Richard
#69004 - in reply to #68975
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Posted 4/11/2007 3:11 PM
Ducks

Date registered: Dec 1899
Location:
Vehicle(s):
RE: POWER INCREASE FOR 617 ENGINE

I'm reading the book Biodiesel: Basics and Beyond by William H. Kemp.  In it he sites numerous studies as showing biodiesel to have:

1.  Power: No loss in horsepower or torque with a slight increase in fuel mileage.

2.  Lubricity:  Significant increase in the ability to lubricate the engine.  There is some consideration to blend biodiesel with low-sulphur petrodiesel to compensate for the new low-sulphur diesel's reduction in lubrication.

3.  Ignition Rating:  Biodiesel has a higher cetane (ignition) rating which reduces engine noise and ignition knock.

Cheers ,
Chad

#69765 - in reply to #68205
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Posted 4/12/2007 6:40 PM
Warren T
Extreme Veteran


Date registered: May 2006
Location: Montreal
Vehicle(s): 230GE,300GD,300D
Posts: 519
500
RE: POWER INCREASE FOR 617 ENGINE

From what I understand, the major difference in the new clean diesels
is mostly in the injection system. Rather than have one large ingection,
the fuel in injected in many small (spurts). This means that fuel is
added to the burning mixture as the piston is moving downward.
This would explain the high torque and more complete burning
in these engines. The smaller initial injection would explain why are
also more silent. I have no idea what they did with injection timing
as in begin of delivery, but it seems that spreading out the fuel feed
over a longer time keeps higher pressure in the cylinder for a longer
time and produces more torque and more complete burning.
Driving a sprinter van with a 2.7 ltr. motor feels like it would
outrun a Chevyvan with a 6.2 v8.
It would be interesting to hear from someone who knows something
about this new diesel technology.
Warren
#69903 - in reply to #69765
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