[Diy_efi] SAE Corrections

[Marteney, Steve]

Thanks! The SAE J1349 equation appears to be as follows:

Factor = 1.18*((990/P)*SQRT((T+273)/298))-0.18

There was a square root missing in the original email.

Steve

-----Original Message-----
From: Rick Richard [mailto:saba_apollo at hotmail.com]
Sent: Thursday, April 03, 2003 3:34 PM
To: diy_efi at diy-efi.org
Subject: RE: [Diy_efi] SAE Corrections


http://wahiduddin.net/calc/cf.htm

That should clear things up...

From: "Marteney, Steve" <Steve_Marteney at DRSOptronics.com>
>Reply-To: List for general do-it-yourself EFI talk <diy_efi at diy-efi.org>
>To: 'List for general do-it-yourself EFI talk' <diy_efi at diy-efi.org>
>Subject: RE: [Diy_efi] SAE Corrections
>Date: Thu, 03 Apr 2003 15:19:57 -0500
>
>If you have a chance, can you check the SAE J1349 formula?  There is a
>parantheses missing and I can't figure out where it should go to make 
>sense.
>
>Thanks,
>Steve
>
>-----Original Message-----
From: Doug. Allison [mailto:dallison at iafrica.com]
>Sent: Friday, March 28, 2003 7:51 AM
>To: Diy_efi at diy-efi.org
>Subject: [Diy_efi] SAE Corrections
>
>
>I'm doing some inertia dyna runs, but I'm a bit suspect about the
>corrections I have. I was always
>under the impression humidity had a part to play ? Not only temp. and
>pressure.
>
>This is what I have.
>
>DIN 70020      ((((273+T)/293)-1)*0.5)+1) * (1013.25/P)
>ISO 1585        (((((273+T)/293)-1)*0.6)+1) * ((((977.3/P)-1)*1.2)+1)
>SAE J1349     ((1.18*((99/(P*0.1)*((((273*T)/298-1)*0.5)+1)))-0.18)
>EEC 80/1269  ((((273+T)/293)-1)*0.5)+1) * (977.3/P)
>
>Temp is in Centigrade and Pressure in mbar.
>Anyone ?
>
>Many Thanks,
>Doug
>
>PS: Are these corrections current?
>
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