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Location:
Finland
Registered:
June 2002
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pc assisted engine analysing programs
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Sun, 05 January 2003 01:53
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Today's computer technology allows pretty interesting stunts to be pulled off. Not all technology is wasted on film industry to create phenomenal special effects.
I'm talking about computer assisted engine analysing programs. Hobbyist is able to program in his engine parameters and start tuning engine from thereon.
Isn't it quite fascinating to play for example with several different camshafts to see their effect on your particular engine? All this without the expense of actually buying the cam and installing it, and have it dynoed.
It gets more expensive if we alter cam timing while on a dyno.
All aspects of engine can be tried out. Inlet manifolds, exhaust manifolds, different turbo's (if applied), various cams, ,,,and so forth.
I used to be skeptical towards these pc programs. I used to think they are sheer BS.
Some of you folks may have heard of pretty sad effort called 'DeskTop Dyno 2000'-program.
The program I'm talking about actually really works.
Here's a link where one such program has been tested. I have received praising for this same very program from numerous sources.
Here's that link:
http://www.motortecmag.com/archives/2001/mar/MAR01 -05/MAR010501.html
Here is one quote of performance of this program when motor was later on dynoed, and data compared to computer's predictions:
"...From 4000 rpm to the 5250 max used the EA predictions were within +/- 1.4%. When the fact that many dyno's are only within 2% is considered this looks good..."
End quote from that site says:
"In round terms we can say from what we learned during our review of EA that for over 90% of the computations results are better than 2% accurate. As a result we are confident that for under $110 you will find Engine Analyzer to be a very useful, cost effective tool toward building a successful motor."
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I'll be getting my copy sometime later this year
-A.
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I supported Toymods
Location:
melbourne.victoria.austra...
Registered:
June 2002
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Re: pc assisted engine analysing programs
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Sun, 05 January 2003 20:30
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bill sherwood should be able to tell you all about engine analyser....very good product...
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Location:
Brisbane / Gold Coast
Registered:
May 2002
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Re: pc assisted engine analysing programs
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Mon, 06 January 2003 04:48
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Yes, I've answered this in a couple of other forums, but I'll answer it here again as others might find it interesting.
I use the Pro version of that program and find it to be very good indeed.
Here's a 'dyno' run of the engine that's in my AE-86 now -
- This seems to be within about 5% or so or what it really has.
This is the new '6AF' that I'll be building to replace it -
That last engine has taken months to refine, and I've gotten slightly better results in the last month or so with further fiddling. That's the road engine, you should see the race-only one ..... !!!
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Location:
Sydney, Australia
Registered:
May 2002
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Re: pc assisted engine analysing programs
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Mon, 06 January 2003 06:10
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Hi Bill,
Have you ever had the chance to compare the results with a real dyno?
rgrds
Sam
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Location:
Brisbane / Gold Coast
Registered:
May 2002
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Re: pc assisted engine analysing programs
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Mon, 06 January 2003 11:48
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Sort-of ...
The fuel flow rate, according to the Motec data logging, matches to within a few HP of what the program suggests, but I can't verify how the actual torque curve looks.
I'll be doing some more thorough tests with the new engine though.
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