Lambda meter usage with of ethanol and CNG

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ABCD

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	Lambda meter usage with of ethanol and CNG « on: April 18, 2012, 02:43:06 AM »

Hi,

Normally, when “gasoline” is used as fuel, then to maintain stoichiometric ratio, lambda is maintained at 1 (AFR =14.7).
But, when different fuels are use i.e.:
1. “CNG” (Compressed natural gas),
2. “Gasoline having 25% ethanol by volume” (commonly called as E25),
How is stoichiometry maintained. Is there a diff setting to be done in the lambda meters?

Regards
Aditya


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NOTORIOUS VR

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	Re: Lambda meter usage with of ethanol and CNG « Reply #1 on: April 18, 2012, 06:19:20 AM »

Lambda 1 = stoichiometric regardless of fuel type


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Snow Trooper

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	Re: Lambda meter usage with of ethanol and CNG « Reply #2 on: April 18, 2012, 09:11:36 AM »

Nvr, I always try to explain that and people don't get it.

That ar thread where people were talking about e85 showed who doesn't know what they are talking about lol.


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jibberjive

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	Re: Lambda meter usage with of ethanol and CNG « Reply #3 on: April 18, 2012, 09:27:27 PM »

Yeah, lambda is fuel-independent, but I'm curious if the best lambda for CNG is the same/similar as that for gas (I know E85 and gasoline are approx. the same, but haven't looked into CNG at all)? What is lean/rich best torque for CNG?


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thom337

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	Re: Lambda meter usage with of ethanol and CNG « Reply #4 on: April 19, 2012, 06:27:56 AM »

CNG is largely CH4 which has an AFR of ~ 17.2:1 by my calcs.


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NOTORIOUS VR

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	Re: Lambda meter usage with of ethanol and CNG « Reply #5 on: April 19, 2012, 07:00:07 AM »


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ABCD

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	Re: Lambda meter usage with of ethanol and CNG « Reply #6 on: April 26, 2012, 03:27:00 AM »

Guys, i still dont have info about E25..anybody?


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