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Old 06-04-2017, 10:56 PM   #3 (permalink)
Cyborg ECU
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Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,299

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
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Originally Posted by oil pan 4 View Post
Do we know if this design ever was adopted?
Sounds like an all around win for everyone.
I did a quick search but did not see anything brought to market. Searching for that, however, also yielded information on the "EmiCat" from a company called "EmiTec." It seems to be an electric-heated "pre-cat" to increase overall CAT efficiency (sort of) by reducing cold start emissions until the conventional catalyst has time to heat up. That technology has apparently been available a long time. Alpina put the thing into a 1999 12 cyl BMW seven series, apparently. And I found academic papers going back about 20 years. Seems like a cool emissions device. Maybe cost is what keeps it from becoming more common equipment.

Continental Emitec GmbH

Here is the emicat in line in the exhaust:

Pretty clever.
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.

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