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  1. #1
    Super Member mjncad's Avatar
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    Default Ford's Ecoboost engine technology

    The following is an email conversation I had with a friend of mine concerning Ford's Ecoboost direct injection turbocharged gas engines.

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    What I find even more interesting is how this may play out further in the large pickup segment. On the Tractor By Net forum I read, there have been threads about the current crop of Cummins, Powerstroke, and Duramax diesels getting mileage that is little better than my V-10 gasser, and in rare cases worse. I average 13.5 MPG. The diesels mileage has dropped significantly due to stricter emissions controls.

    I've noticed more V-10's on the road the past couple of years since the stringent diesel emissions went into effect. Now if Ford applies Ecoboost to their Triton V-8 & V-10 modular engine line, the mileage and performance could increase further and make a diesel pickup even less attractive, except to those who truly need diesel torque and durability. There's enough room under the hood of my truck that I often wondered if Ford had a V-12 on the drawing board; but shelved it due to mileage issues. However, I think the engine setback was also done in an effort to improve handling.

    When I ordered my truck in 1999, I looked at the 7.3 liter Powerstroke diesel, and although I could have afforded one, I couldn't justify the $3,500 cost of the diesel. The V-10 was $350 extra, and it provides all the power I need. Also the Ford diesel has two batteries, and takes 14-quarts of oil. The new 6.4 liter Powerstroke takes 16-quarts of oil. Oil changes for the diesel at the Ford dealership are 3x to 4x what they are for my V-10. As I understand it, the diesels in current pickups are now a $7,000+/- option, and the Ford V-10 is around $700.

    MJN


    -----Original Message-----

    Subject: Big advance in engine design
    Hi All,

    This link takes you to a Ford Motor Co. press release on their new direct injection gasoline engines. Present fuel injection sprays fuel in the intake manifold upstream of the intake valve. With direct injection gasoline is sprayed into the combustion chamber, as in diesels. Both horsepower and fuel economy are improved.

    Ongoing research work explained elsewhere on the Ford site includes controlling intake and exhaust valves such that no throttle plate is needed to control engine speed. This eliminated pumping losses, the work the engine does that produces manifold vacuum. The would make a gasoline engine even more similar to a diesel.

    Hopefully Ford has this on the 2008 auto show circuit.


    Shortcut to:
    http://media.ford.com/newsroom/release_display_foriframe.cfm?release=27455
    Paraphrasing Douglas Adams - So long and thanks for all the bacon.

  2. #2
    Gold Member BruceR's Avatar
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    YM 2000B, JD 110, cub cadet 109, cub cadet 70, cub cadet 100

    Default Re: Ford's Ecoboost engine technology

    Great Link, Thanks

    Bruce

  3. #3
    Platinum Member
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    JD 5325 JD 5203 JD 2320 LT 133

    Default Re: Ford's Ecoboost engine technology

    Looks like my new 2008 V-10 with 6 speed manual is going to average in the low 13 range in mileage.

    I paid 258 bucks for the V-10.

  4. #4
    Gold Member yankeerider's Avatar
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    Default Re: Ford's Ecoboost engine technology

    Thanks for posting that. I actually worked on development of the fuel injection pump for that type of system back in the late 70's. At the time, it was called "PROCO".

    We had challenges due to the very tight clearances required to keep the pump alive due to the low lubricity of gasoline, and the company that employed me lost the development contract in early 1980.
    Jerry

    JD 755 w/70 loader, 60" MMM, DR 3pt chipper, Woods RB60 blade, 48" KKII tiller, 8 hp tow behind Giant Vac
    Gator HPX 4x4 Gas,Cat 303c CR mini-ex

  5. #5
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    Default Re: Ford's Ecoboost engine technology

    I have a 2006 6.0 Ford.
    The very best mileage I can get it 16.0 MPG. I had an 2004 6.0 that did 19 MPH all the time.
    The 2004 had an Edge chip, the 2006 has a Superchip.
    The chip is set to ecomony and the MPG is still terrible.
    Am I expecting something that is un realistic?
    If I got 20 I would be a happy camper.
    These are interstate miles, never over 72 MPH.
    What is normal for a 6.0?

  6. #6
    Veteran Member JESSE1's Avatar
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    Default Re: Ford's Ecoboost engine technology

    It takes fuel to make horsepower. The 6.0 in stock form makes 325hp. If you had a '90 Non-turbo 7.3 diesel w/6sp trans you could easyily get 20 mpg. Only problem is it made about half the horsepower of your engine. Very reliable but low power engines. Feel lucky to get 16mpg. The emissions on the new engines have lowered the mileage on all brands.
    6400 John Deere w/ cab, JD 535 Baler, 997 ZTR Diesel, 72" 7 Iron deck, John Deere 855D 4x4 Diesel Gator

  7. #7
    Gold Member
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    Default Re: Ford's Ecoboost engine technology

    This is just hearsay. When I was in the market for a new truck I talked to a guy with a 6.0 L Ford. He said he got better mileage with his previous, 7.3L, Ford diesel. I don't know if it is true.

    I get a little under 16 with my '05 6.0L F250 according to the computer. I have never calculated it myself.

  8. #8
    Veteran Member
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    Kioti DK40SE

    Default Re: Ford's Ecoboost engine technology

    I've heard the same thing from a number of people. The 7.3's apparently got very good mileage. Met someone with an Excursion 7.3 diesel who claimed to get 20-21mpg in his usual rural driving. (I do have a slightly hard time believing that, but that's what he said.) Jesse makes a good point about the relative hp though.

  9. #9
    Super Star Member Diamondpilot's Avatar
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    Default Re: Ford's Ecoboost engine technology

    I agree it takes fuel to make HP but what you guys are missing is what makes the best mileage is making torque at your cruise speed. That means matching the engine, tranny, gears, and tire size. My 2 6.0L's get 4 mpg better than my 7.3L yet they have over 125 HP more in the form I have them.

    Chris

  10. #10
    Super Member
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    Default Re: Ford's Ecoboost engine technology

    My 7.3's got lower fuel mileage around town & towing making 235HP or 250 HP than my Dmax gets with 360HP. Similar weights & driving conditions.

    Today's diesel engines are more fuel efficient with multiple injection events & better electronics.

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