[Diy_efi] SAE Corrections

Thu Apr 3 20:22:41 GMT 2003

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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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<DIV><SPAN class=921562020-03042003><FONT face=Arial color=#0000ff size=2>If you 
have a chance, can you check the SAE J1349 formula?&nbsp; There is a parantheses 
missing and I can't figure out where it should go to make 
sense.</FONT></SPAN></DIV>
<DIV><SPAN class=921562020-03042003><FONT face=Arial color=#0000ff 
size=2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=921562020-03042003><FONT face=Arial color=#0000ff 
size=2>Thanks,</FONT></SPAN></DIV>
<DIV><SPAN class=921562020-03042003><FONT face=Arial color=#0000ff 
size=2>Steve</FONT></SPAN></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
  <DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma 
  size=2>-----Original Message-----<BR><B>From:</B> Doug. Allison 
  [mailto:dallison at iafrica.com]<BR><B>Sent:</B> Friday, March 28, 2003 7:51 
  AM<BR><B>To:</B> Diy_efi at diy-efi.org<BR><B>Subject:</B> [Diy_efi] SAE 
  Corrections<BR><BR></FONT></DIV>
  <DIV>
  <DIV><FONT color=#000000 size=2>I'm doing some inertia dyna runs, but I'm a 
  bit suspect about the corrections I have. I was always</FONT></DIV>
  <DIV><FONT color=#000000 size=2>under the impression humidity had a part to 
  play ? Not only temp. and pressure.</FONT></DIV>
  <DIV><FONT color=#000000 size=2></FONT>&nbsp;</DIV>
  <DIV><FONT color=#000000 size=2>This is what I have.</FONT></DIV>
  <DIV><FONT color=#000000 size=2></FONT>&nbsp;</DIV>
  <DIV><FONT color=#000000 size=2>DIN 70020&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
  ((((273+T)/293)-1)*0.5)+1) * (1013.25/P)</FONT></DIV>
  <DIV><FONT color=#000000 size=2>ISO 
  1585&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (((((273+T)/293)-1)*0.6)+1) * 
  ((((977.3/P)-1)*1.2)+1)</FONT></DIV>
  <DIV><FONT color=#000000 size=2>SAE J1349&nbsp;&nbsp;&nbsp;&nbsp; </FONT><FONT 
  color=#000000 
  size=2>((1.18*((99/(P*0.1)*((((273*T)/298-1)*0.5)+1)))-0.18)</FONT></DIV>
  <DIV><FONT color=#000000 size=2>EEC 80/1269&nbsp; ((((273+T)/293)-1)*0.5)+1) * 
  (977.3/P)</FONT></DIV>
  <DIV><FONT color=#000000 size=2></FONT>&nbsp;</DIV>
  <DIV><FONT color=#000000 size=2>Temp is in Centigrade and Pressure in mbar. 
  </FONT></DIV>
  <DIV><FONT size=2>Anyone ? </FONT></DIV>
  <DIV><FONT size=2></FONT>&nbsp;</DIV>
  <DIV><FONT size=2>Many Thanks,</FONT></DIV>
  <DIV><FONT size=2>Doug</FONT></DIV>
  <DIV>&nbsp;</DIV>
  <DIV><FONT size=2>PS: Are these corrections 
current?</FONT></DIV></DIV></BLOCKQUOTE></BODY></HTML>

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