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Engine Specific Info and Questions => IDI Engine => Topic started by: zyewdall on September 07, 2005, 11:30:54 am

Title: fuel consumption curves for 1.6 IDI?
Post by: zyewdall on September 07, 2005, 11:30:54 am

Does anyone out there have, or know where to get, fuel consumption curves of grams/HP-hr, vs RPM for the 1.6?  The only thing I have been able to find iis this post, which implies that the most efficient point is at 2,000rpm.  I see these all the time for airplane engines, but have actually never seen one for an automobile engine.

http://cs-www.cs.yale.edu/homes/jag/vw/engine/tdiswap/tdiswap.html

Title: fuel consumption curves for 1.6 IDI?
Post by: jtanguay on September 07, 2005, 12:15:05 pm

Here you go in a PDF file

https://home.comcast.net/~smhitchings/VAG_Manual.pdf

its sort of near the bottom.   Has spec fuel consumption for 1.6 idi and turbo as well as the audi 5 cyl turbo :D

the pics might be hard to read... if its that bad I have the original pdf file on hand :)

Title: fuel consumption curves for 1.6 IDI?
Post by: zyewdall on September 07, 2005, 01:09:04 pm

Thanks.  This is great.

Title: fuel consumption curves for 1.6 IDI?
Post by: VWRacer on September 07, 2005, 02:39:29 pm

I like their word for "normally-aspirated"..."suck-motor"!!!  :lol:  :lol:  :lol:

Title: fuel consumption curves for 1.6 IDI?
Post by: vwmike on September 07, 2005, 03:29:29 pm

Quote from: "VWRacer"

I like their word for "normally-aspirated"..."suck-motor"!!!  :lol:  :lol:  :lol:

Yeah...actually I think their term is more correct....the N/A diesel certainly does suck.

Title: fuel consumption curves for 1.6 IDI?
Post by: VWRacer on September 07, 2005, 03:32:09 pm

Yeah...exactly!  :lol:

Title: fuel consumption curves for 1.6 IDI?
Post by: jtanguay on September 08, 2005, 07:50:55 am

Quote from: "VWRacer"

I like their word for "normally-aspirated"..."suck-motor"!!!  :lol:  :lol:  :lol:

lol

Title: fuel consumption curves for 1.6 IDI?
Post by: fspGTD on September 08, 2005, 08:32:38 am

There is also a plot of bsfc (brake-specific fuel consumption) for the 1.6lTD motor showing bsfc contours plotted against rpm and load in the VW TD SAE paper.  There is a crappy scan of it floating around the internet, but the numbers are only barely readable.  I do have the original paper.

Here is a thread with bsfc plots for the 4-cylinder TD, the 5-cylinder TD, as well as the TDI (which gets under 200 g/kWh!):
http://www.vwdiesel.net/phpBB/viewtopic.php?t=649&start=13