BSFC Maps
BSFC Maps
(OP)
Hi there all,
I am developing a vehicle simulation library which includes calculations on fuel economy, using data obtained from specific fuel consumption maps. Although plenty of maps are publicly available (in image form) on the internet they tend to be:
- too old, often from engines with emissions and power outputs which do not represent modern designs/calibrations
- not from identified and verified sources, with no information about intake temp / ancillaries etc..
- poor resolution hampering digitisation
I am looking for a small handful of up-to-date maps, preferably from a proper source such as a published journal paper. Being in Europe, of particular interest are small common-rail turbo diesels (Euro 5/6) and modern downsized turbo-direct-injection petrols (gasoline). A heavy duty diesel map or two would be useful too. Tier2bin5 engines would also be acceptable.
Does anyone know of where I should be looking? I don't have free access to journals, but would be willing to buy a couple of specific papers if they have the information I need. Any information on motored friction (FMEP) vs speed would also be very useful if anyone has any ideas. This is necessary for motored torque and no-load fueling estimations.
Many thanks,
Sam Berry
I am developing a vehicle simulation library which includes calculations on fuel economy, using data obtained from specific fuel consumption maps. Although plenty of maps are publicly available (in image form) on the internet they tend to be:
- too old, often from engines with emissions and power outputs which do not represent modern designs/calibrations
- not from identified and verified sources, with no information about intake temp / ancillaries etc..
- poor resolution hampering digitisation
I am looking for a small handful of up-to-date maps, preferably from a proper source such as a published journal paper. Being in Europe, of particular interest are small common-rail turbo diesels (Euro 5/6) and modern downsized turbo-direct-injection petrols (gasoline). A heavy duty diesel map or two would be useful too. Tier2bin5 engines would also be acceptable.
Does anyone know of where I should be looking? I don't have free access to journals, but would be willing to buy a couple of specific papers if they have the information I need. Any information on motored friction (FMEP) vs speed would also be very useful if anyone has any ideas. This is necessary for motored torque and no-load fueling estimations.
Many thanks,
Sam Berry





RE: BSFC Maps
"Schiefgehen will, was schiefgehen kann" - das Murphygesetz
RE: BSFC Maps
If I had free access to all papers I'm sure I could find enough information given time, but alas I don't!
Can you suggest any authors I should look for if I did go down this route?
RE: BSFC Maps
Your best bet for free information is public domain sources, such as EPA, DOE, etc, however, their ivory tower sources tend to be a little bit removed from the real world.
"Schiefgehen will, was schiefgehen kann" - das Murphygesetz
RE: BSFC Maps
I overestimated the number of papers the Ricardos, Mahles, Delphis, Densos etc of the world had published on standard combustion engines.
RE: BSFC Maps
Hemi is correct. The most recent data on today's state of the art engines is expensive to generate, and not very easy to obtain publicly. However, one of the best places to search, and you will have to do some data mining for sure, is the proceedings from the DEER (Directions in Engine-Efficiency and Emissions Research)conferences. Google "DEER conference proceedings" and pick the first link at energy.gov. They do a nice job of keeping all of the conference presentations in .pdf format. You will have to wade through quite a bit of material, but I know you will find some modern engine/combustion system BSFC charts, and lots of other interesting info too.
RE: BSFC Maps
RE: BSFC Maps
The ecomodder web site has some bsfc maps, but I am guessing that you have already looked at these.
Dick Vincent
http://ecomodder.com/
RE: BSFC Maps
RE: BSFC Maps
Since I prefer threads with some closure, even if it's a little delayed, I thought I'd write down what I managed to find.
The DEER conference proceedings were a great resource... just not for BSFC maps. Lots to learn there though. The one map I did find (GM/Fiat 1.9 diesel) didn't survive sanity checks and so was of no use, unfortunately.
I managed to find a couple of SAE papers. One described a Ford 6.7L V8 engine. Great paper with excellent BSFC and NOx maps. The other represented an unlabelled engine with normalised axes, but the shape restricted it to one engine option (a GM 2.0L diesel), and so it was of some use.
The biggest resource was the German magazine MTZ / ATZ. Mercedes and VW published many BSFC maps in this magazine over the last decade, and the majority appears to be good quality. This includes 2.0L diesels, 1.4L downsized petrols, and a couple of V6s.
A last few were found from Google Books, although of older engines.
It would appear that the Aachen Colloquium, and similar conferences are *the* place to get OEM data like this, but only a small amount is publicly available. On the plus side I now have enough reliable data to determine trends and patterns, which was half the point.
Thank you all for your help!
RE: BSFC Maps
Any chance you can put the maps you have found somewhere public? I for one would love to have access to such a resource. Cheers.
je suis charlie