Quote:
Originally Posted by Birdman
Wow Dan great information as usual . Thanks for posting all the wonderful 'links' too.
That's going to be one strong engine to handle those 150 bar peak cylinder pressures. I see they will be using 'piston squirter's ' to cool the pistons too.
The high pressure fuel pumps will be driven by the intake cams too.
They will also be using twin independent variable cam timing. Not only will this engine be very efficient but will have great power too with the use of the twin turbos.
I wonder how they plan to make the duel fuel tanks a viable option.
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Seems piston squirters will be popular ...EB/GTDI engines get them (rumored on the '11MY 5.0 Coyote and 5.4 alloy?)
Yeah, I imagine the dual fuel tanks could be viable because, in the Ford approach, you don't use much E85. It's seems primarily for cooling thereby enabling big gas savings from the efficiencies of extreme [and variable] effective CRs. Ford seems carefull not to be specific anywhere on actual/effective CRs but the cylinder pressures they state seem to imply effective CRs in well in excess of 20:1 (e.g. 10:1 with well over 15# peak boost.
I also found it interesting that for EB-1 the DI is for the gas but for EB-2 it would seem it's PI for the gas and DI for the E85 (shot from the intake side). There appears to be other appartus under the intake in that diagram but unclear what it is.
It did make me think for a minute that the project "777" 7.0L E85 experimental H/Boss in the Roush/Bowles yellow mule might have had PI+DI at some point. The two mags that covered it mentioned 9.40s/140s, yet we now know it eventually went 8.80s/hi-150s. That's the diff between +/- 800rw and 1000rw in a 3350lb ride. In the mag pics you can clearly see the dual-PIs/cyl that were presumeably pumping all that E85, but who knows what lurked under that intake in later testing in the 8s?
-lol. I do believe that was only an E85 motor, but the dual-fuel thought did go thru my mind as I was reading that Ford DOE pitch ;-)
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"We hang the petty thieves and appoint the great ones to public office." --Aesop
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"Diplomacy is the art of saying 'Nice doggie' until you can find a rock." --Will Rogers
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"The problem with socialism is that eventually you run out of other people's money." --Margaret Thatcher
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"A government big enough to give you everything you want, is strong enough to take everything you have." --Thomas Jefferson
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"Government exists to protect us from each other. Where government has gone beyond its limits is in deciding to protect us from ourselves." ... "Man is not free unless government is limited." ... "Republicans believe every day is the Fourth of July and the democrats believe every day is April 15." ... "The problem is not that people are taxed too little, the problem is that government spends too much." --Ronald Regan
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"You cannot bring about prosperity by discouraging thrift. You cannot strengthen the weak by weakening the strong. You cannot help the wage earner by pulling down the wage payer. You cannot further brotherhood of man by encouraging class hatred. You cannot help the poor by destroying the rich. You cannot keep out of trouble by spending more than you earn. You cannot build character and courage by taking away mans initiative and independence. You cannot help man permanently by doing for them what they could and should do for themselves." --Abrahan Lincoln
Of course we still want a DOHC alloy big block!