Reply to: Re: a/f ratio with LPG

[RABBITT_Andrew at mv8.orbeng.com.au]

ULEV with CNG can't be really difficult since the methane content of 
the exhaust is not counted which is essentially all your UHC.  How did 
you control NOx.  Was it closed loop stoich. on a TWC?  Did you use 
your CNG modified O2 sensor for feedback?

From: (Seth Allen) n9540517 at henson.cc.wwu.edu:smtp
Date: ## 05/17/96 08:12 ##


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