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Location:
Montrose, VIC
Registered:
May 2002
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Re: optimum air fuel ratio
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Fri, 27 May 2005 14:10
 
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The 'perfect' ratio is different for every application - I suppose, pull the engine out, and with a few hours on an engine dyno, attempt to find the balance between BSHP and BSFC (brake specific fuel consumption). However, if you're a little more realistic, then I guess you can go off generalisations - i.e. 12-12.5 for power, 14.7 = stoic, and 16-17 for maximum economy. The emissions side of it is tricky though, with CO decreasing under leaner mixtures, and NOx increasing. Which is why car makers aim for 14.7 as much as possible, and fit a cat converter. 'Lean cruise' functions are illegal these days anyway.
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| | Subject | Poster | Date |
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optimum air fuel ratio
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Chris Davey | Fri, 27 May 2005 03:29 |
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Re: optimum air fuel ratio
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CrUZsida | Fri, 27 May 2005 03:45 |
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Re: optimum air fuel ratio
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MR 1JZ | Fri, 27 May 2005 04:03 |
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Re: optimum air fuel ratio
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wilbo666 | Fri, 27 May 2005 05:37 |
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Re: optimum air fuel ratio
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justcallmefrank | Fri, 27 May 2005 06:13 |
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Re: optimum air fuel ratio
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Chris Davey | Fri, 27 May 2005 06:29 |
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Re: optimum air fuel ratio
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monkeymajik | Fri, 27 May 2005 07:55 |
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Re: optimum air fuel ratio
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Chris Davey | Fri, 27 May 2005 08:37 |
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Re: optimum air fuel ratio
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CrUZsida | Fri, 27 May 2005 08:41 |
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Re: optimum air fuel ratio
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Chris Davey | Fri, 27 May 2005 08:47 |
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Re: optimum air fuel ratio
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CrUZsida | Fri, 27 May 2005 08:53 |
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Re: optimum air fuel ratio
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Chris Davey | Fri, 27 May 2005 09:02 |
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Re: optimum air fuel ratio
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CrUZsida | Fri, 27 May 2005 09:06 |
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Re: optimum air fuel ratio
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mrshin | Fri, 27 May 2005 14:10 |
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Re: optimum air fuel ratio
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TE72_Turbo | Fri, 27 May 2005 14:23 |
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Re: optimum air fuel ratio
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RWDboy | Fri, 27 May 2005 14:28 |
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Re: optimum air fuel ratio
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Chris Davey | Sat, 28 May 2005 01:19 |
