Go Back   EcoModder Forum > EcoModding > General Efficiency Discussion
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 01-17-2013, 12:29 PM   #1 (permalink)
Master EcoModder
 
ever_green's Avatar
 
Join Date: May 2011
Location: Toronto
Posts: 264

gueff - '19 Mercedes Benz A250 4MATIC AMG
90 day: 30.55 mpg (US)
Thanks: 8
Thanked 79 Times in 33 Posts
Engine Analyzer Pro with Pictures

Engine analyzer pro is an engine designer for professionals and engineers to simulate engine dynamometers. I have been playing with this sim for about a week now and have had surprisingly accurate results. Now i must warn people that are interested in such software that EAP is very tedious and you need to know a LOT about your engine to get some accurate results. Also its an expensive piece of software. One main reason i'm using this software was to estimate the brake specific fuel consumption or BSFC for my cars (there are a lot of information that this software can provide, BSFC is only one of many). With EAP You basically edit information such as your short block, heads, intake, exhausts, cams/valves and turbo/supercharger. Then you can get your end performance results after the software analyzes this information. this is just a page from the cam/valve spec section that i filled out:



once you enter the information required as accurately as possible then you can calculate the peformance.

EAP analyzing the engine (dyno):


and here is what i got for results on brake specific fuel consumption, brake torque, fuel flow and volumetric efficiency:



BSFC alone:


so according to this simulation my brake specific fuel consumption (SOHC 2.5L impreza) is lowest at 2200-2400 rpm during wide open throttle. I know it's all a simulation but its pretty interesting still. Also there are a lot more information that EAP provides such as knock index, brake horse power, cylinder pressure, exhaust pressure and so on...

__________________

Last edited by ever_green; 01-21-2013 at 11:27 PM..
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 01-17-2013, 12:36 PM   #2 (permalink)
Master EcoModder
 
ever_green's Avatar
 
Join Date: May 2011
Location: Toronto
Posts: 264

gueff - '19 Mercedes Benz A250 4MATIC AMG
90 day: 30.55 mpg (US)
Thanks: 8
Thanked 79 Times in 33 Posts
if you provide me with information such as your cam timing, valve sizes, valve lift i can estimate a result for you. i really like to see one for a honda insight so i have something to compare against, since insight is so well documented BSFC wise.
__________________
  Reply With Quote
Old 01-17-2013, 12:44 PM   #3 (permalink)
...beats walking...
 
Join Date: Jul 2009
Location: .
Posts: 6,190
Thanks: 179
Thanked 1,525 Times in 1,126 Posts
Q: does that EAP software allow you simulate engine conditions other than WOT, such as part-throttle, high-loading, highest gear--ie: hypermiling?
  Reply With Quote
Old 01-17-2013, 01:49 PM   #4 (permalink)
Master EcoModder
 
ever_green's Avatar
 
Join Date: May 2011
Location: Toronto
Posts: 264

gueff - '19 Mercedes Benz A250 4MATIC AMG
90 day: 30.55 mpg (US)
Thanks: 8
Thanked 79 Times in 33 Posts
no unfortunately only wide open throttle simulations are available.
__________________
  Reply With Quote
Old 01-17-2013, 02:52 PM   #5 (permalink)
(:
 
Frank Lee's Avatar
 
Join Date: Jan 2008
Location: up north
Posts: 12,762

Blue - '93 Ford Tempo
Last 3: 27.29 mpg (US)

F150 - '94 Ford F150 XLT 4x4
90 day: 18.5 mpg (US)

Sport Coupe - '92 Ford Tempo GL
Last 3: 69.62 mpg (US)

ShWing! - '82 honda gold wing Interstate
90 day: 33.65 mpg (US)

Moon Unit - '98 Mercury Sable LX Wagon
90 day: 21.24 mpg (US)
Thanks: 1,585
Thanked 3,555 Times in 2,218 Posts
It just so happens that 2320-2800 rpm = 1000-1200 ft/mn piston speed.
__________________


  Reply With Quote
Old 01-17-2013, 03:21 PM   #6 (permalink)
Adventurist!
 
Join Date: Sep 2012
Location: Nashville, TN
Posts: 144

CLaero - '97 Acura CL Premium
90 day: 34.59 mpg (US)

CR-v - '03 Honda CR-V EX
Team Honda
90 day: 26.52 mpg (US)
Thanks: 9
Thanked 21 Times in 21 Posts
Wow, I would LOVE to have that software to tinker with!
__________________
'97 Acura CL 2.2L 5spd
'03 Honda CR-V 2.4L EX 4wd Auto
  Reply With Quote
Old 01-17-2013, 04:39 PM   #7 (permalink)
Master EcoModder
 
ever_green's Avatar
 
Join Date: May 2011
Location: Toronto
Posts: 264

gueff - '19 Mercedes Benz A250 4MATIC AMG
90 day: 30.55 mpg (US)
Thanks: 8
Thanked 79 Times in 33 Posts
yep its a lot of fun and if you know what your doing and read the 240 page manual its accurate too. you can download the trial or the older version for free if you google a bit. ill be working on the gm 1.4l turbo and a 1.8l honda next.
__________________
  Reply With Quote
Old 01-17-2013, 08:08 PM   #8 (permalink)
Adventurist!
 
Join Date: Sep 2012
Location: Nashville, TN
Posts: 144

CLaero - '97 Acura CL Premium
90 day: 34.59 mpg (US)

CR-v - '03 Honda CR-V EX
Team Honda
90 day: 26.52 mpg (US)
Thanks: 9
Thanked 21 Times in 21 Posts
Ah... no version for Macs. guess I'll have to dust off the old laptop!!!
__________________
'97 Acura CL 2.2L 5spd
'03 Honda CR-V 2.4L EX 4wd Auto
  Reply With Quote
Old 01-18-2013, 10:57 PM   #9 (permalink)
Master EcoModder
 
ever_green's Avatar
 
Join Date: May 2011
Location: Toronto
Posts: 264

gueff - '19 Mercedes Benz A250 4MATIC AMG
90 day: 30.55 mpg (US)
Thanks: 8
Thanked 79 Times in 33 Posts
ok here is one with cummins 5.9L with truck diesel fuel



compared to official results:
http://ecomodder.com/wiki/images/1/1...9-175_BSFC.gif
__________________
  Reply With Quote
Old 01-18-2013, 11:09 PM   #10 (permalink)
Master EcoModder
 
Join Date: Jan 2012
Location: United States
Posts: 1,756

spyder2 - '00 Toyota MR2 Spyder
Thanks: 104
Thanked 407 Times in 312 Posts
I think usually the case is that peak BSFC is at a slightly lower rpm than the peak BSFC at WOT. Your peak WOT BSFC is at ~2000rpm, which is a really slow engine speed! Peak BSFC might arrive at something like 1900rpm and 85% of that torque.

  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com