US EPA stationary engine emission certification

[Fmangas]

I have a GM 454 based 150hp natural gas engine. I'd like to get emissions certified.

I want to get this engine certified on wellhead gas with a BTU range of 900 to 1500. I'm trying to find an emissions lab that is familiar with this type of cert or a consultant who can help with the cert.

Does anyone have any recommendations??

Thanks
Frank

 

[patprimmer]

I have a thought if not a recommendation.

900 to 1500btu is a big range suggesting a big difference in hydrogen to carbon in the fuel source from time to time. This will impact strongly on a:f. I wonder how that is handled and suspect an effective strategy for that is a first requirement. As to other contaminants that I strongly suspect are present, I have no idea. Do they poision catalytic converters. I suspect they might.

Do these engines have an electronic EMS (engine management system)?

Do they have a catalytic converter?

Do they operate at constant load and rpm. If so is that where they are tested?

Regards
Pat
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[catserveng]

Try these guys,

http://www.swri.org/4org/d08/emmres/certcom/home.htm

Mike L.

 

[Fmangas]

Pat
I have a AFR/Gov it will maintain fuel control authority across the BTU range. It does this by dithering the incoming fuel into the venturi mixer. It does have an ECM to control the fuel and spark. It has a three way cat with a stainless steel core and wash coat to help with extras in the gas. It is a steady state operation at 1800rpm this is where it will be tested.

Cat
I've looked at swri and there more expensive by a factor 3 for just the testing.

I'm looking for more of a company that will handle the paperwork and testing. Everyone either wants to do one or the other. Then they get freaked out when I talk about fuel.

Thanks

 

[catserveng]

You may want to try working this backwards a bit, have you contacted the EPA or CARB and asked who they would recommend to validate a variable BTU fueled SI engine? I think you will find it is a VERY short list.

You could also try a couple of the universities that have had programs for IC engines, like Texas A&M and UC Riverside, see if anyone from those programs know of someone who has gone on to provide the service commercially.

Of course they get freaked out about the fuel, anyone who has spent time with engines actually working with wellhead fuels knows how fun they can be to maintain performance and emissions compliance, stay out of detontation and provide a decent service life.

Good luck in your search.

 

[franzh]

I have worked with and used SWRI for many years and are totally satisfied with their justification for their pricing. There is a reason they are expensive. They are used to varying fuel blends and there isnt anything they havent seen already, just in case you think you have the holy grail in fuel controllers (no slight intended).

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[Fmangas]

franzh
I understand the value of SWRI but in this application (Not the holy grail of engine controllers)I don't feel there worth the extra money.