emissions machine?
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Joined: May 2002
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From: banned NC
emissions machine?
isnt the emiisions checking machine a wideband?
my friend works at a place where they do emissions and maybe im wrong, but i thought i remember watching it the other day and it reading like a 12.5 or something which is in units that AFR is in...of course stoich is 14.7, but you get the idea...the guys car that was on it was running rich...
so basically are they widebands?
my friend works at a place where they do emissions and maybe im wrong, but i thought i remember watching it the other day and it reading like a 12.5 or something which is in units that AFR is in...of course stoich is 14.7, but you get the idea...the guys car that was on it was running rich...
so basically are they widebands?
Joined: Dec 2001
Posts: 506
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From: CA
Re: emissions machine? (hybridvteceg)
That would depend on what the state requirements are, and I wouldn't be surprised if they read your a/f. But they aren't just widebands. They also sniff for hydrocarbons, carbon monoxide, nitrogen oxide, etc.
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Joined: Jan 2003
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Re: emissions machine? (hybridvteceg)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hybridvteceg »</TD></TR><TR><TD CLASS="quote">... reading like a 12.5 or something which is in units that AFR is in...of course stoich is 14.7, but you get the idea...</TD></TR></TABLE>
Well, if it was sniffing the exhaust, it might have been reading 12.5ppm (parts per million). That's way different units than air:fuel ratio; 14.7:1 means that there's 68000ppm of fuel.
Well, if it was sniffing the exhaust, it might have been reading 12.5ppm (parts per million). That's way different units than air:fuel ratio; 14.7:1 means that there's 68000ppm of fuel.
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