Those are interesting, but I don't think a timing map and a BSFC map are the same. Vacuum would be a good way to measure engine load. But I don't see information about fuel consumption at these loads. I see power production but not fuel consumption for that power. Most of the BSFC maps I have seen show sweet spots at lower RPMs. A car that might produce the most power at 5000 RPMs might produce its most efficient power at 2000 RPMs. I have looked many times for a stock BSFC map for my Civic online. Never found one. But you can find examples on this site, if you search for BSFC maps. (BTW, stock timing on my 98 DX is 12 BTDC, not 16... 22 BTDC must have meant very lean conditions, no?)
__________________
See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
|