Howdy, here at the UW Mech Engr dept, we have a ford Contour engine on a
dyno that the kids run. As part of the class the kids get to design an
experiment of their own, and one of them came up with cooling an
intercooler and feeding the cooled air to the engine. Unfortunately , they
have been taught to run at a steady state condition, and while the engine
ran very hard for the first 6 or 7 minutes of the run with the intake air
at around -30 f*, all of a sudden, the intercooler, complete with the pan
of ice and alcohol jumped towards the engine as it gulped and died.
luckily, no fire ensued ...they did learn something from the experiment
though.....
At 10:52 PM 11/27/01, you wrote:
>Good point John.
>In '72 I was hanging around Jack Lufkins crew and they were fighting
>that problem and no boost in low gear.
>They were trying a alcohol & ice mix in the 40 gal tank that fed the two
>vary large intercoolers.
>It worked so well that there wasn't enough heat to spool up the turbos
>until after it was in second (3-spd 727) and by that time the IC's were so
>iced up they wouldn't flow. Rich mixture fouled the plugs.... T.O.
>The fix was simple. The driver didn't turn on the cooler pumps until
>after the 1-2 shift. The result, I believe, was a new record.
>As the old sayings go; be careful what you ask for, you might get it and
>watch out for the law of unintended consequences.
>I don't remember the numbers but lowering the charge air temp added
>a bunch (100+ HP??) to the BBC. (Sports Raceing was a gas only class)
>
>Bryan
>
>
>
> >john robinson wrote:
> > Also be careful of getting it cold enough to freeze any moisture in the air
> > in the intercooler passages, tends to make it very limited on air flows
> > when the engine side of the intercooler is plugged with ice. ....
John Robinson, Mechanician
Mechanical Engineering University of Wisconsin
1513 University Ave.
Madison, Wi. 53706
608-262-3606
FAX 608-265-2316
Current World Land Speed Record Holder
Bonneville Salt Flats
H/GCC 92 cu.in. 1980 Dodge Colt
131.333 MPH set 1995
136.666 MPH set 1996
140.292 MPH set 2000
144.396 MPH set 2000
MPS-PG 441 c.c. 1967 BSA Victor Motorcycle
95.193 MPH set 2001
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