Will EGR Work

Will EGR Work

PostBy: japar On: Thu Oct 14, 2010 7:30 pm

EGR stands for exhaust gas recirculation which is used on autos to reburn exhaust gases to help improve fuel milege and clean up emissions. Does it realy work ? Well lets just say its somthing the government came up with to clean the air. I am thinking of doing this on my Hearthmate coal stove. But why and how ? My stove sits on the hearth I have a block off plate that seals off the fireplace, the flue exits out the back into the FP , everything works great except I have a good size firebox and it always seems to starve for air in the rear of the firebox. I always have unburt coals in the back. I am thinking of taking the ashpan out and drilling two 5/16'' holes in the rear of the stove. This will do two things the first it will get some air to the rear of the firebox from the fireplace and second I can give it less air from the ashpan vents thus taking less air from the house . If my plan don't seam to work I will just tap the holes and install two 5/16'' bolts. Any thoughts
japar
 
Hand Fed Coal Stove: Hearthmate
Stove/Furnace Make: Hearthmate
Stove/Furnace Model: combo

Re: Will EGR Work

PostBy: ruger1980 On: Thu Oct 14, 2010 10:07 pm

EGR is used in almost all internal cumbustion engines today(gas and diesel).

It in now improves fuel economy. It reduces it substancially. It does not burn unburnt exhaust gas but is used to reduce combustion temperatures wnich in turn reduces NOX emissions.

Introducing inert cumbustion gases into your fire box will only reduce combustion effiency.
ruger1980
 
Stove/Furnace Make: Liesure Line
Stove/Furnace Model: Hyfire II

Re: Will EGR Work

PostBy: Berlin On: Mon Oct 18, 2010 12:34 pm

Exactly what he said^ EGR is a horrible thing that cuts the life of many engines (especially newer diesels) short, it doesn't add efficiency, rather, it takes it away. EGR lowers peak combustion temps by placing exhaust gases in the combustion chamber and creating small "dead zones" in the cylinder and lower peak core combustion temps thus reducing NOx emissions.
Berlin
 
Hot Air Coal Stoker Furnace: Will-Burt Combustioneer 77B
Coal Size/Type: Ohio BITUMINOUS pea stoker coal


Re: Will EGR Work

PostBy: Short Bus On: Mon Oct 18, 2010 1:29 pm

Chiminy gasses from your stove should be low in oxygen, I don't think they will help combustion.
Short Bus
 
Stoker Coal Boiler: Kewanee boiler with Anchor stoker
Coal Size/Type: Chestnut / Sub-bituminous C
Other Heating: Propane wall furnace back up only

Re: Will EGR Work

PostBy: franco b On: Mon Oct 18, 2010 3:41 pm

I think it will help; not by introducing flue gas but by creating negative draft at those holes which will tend to pull air to the back of the stove. Nothing ventured, nothing gained.
franco b
 
Hand Fed Coal Stove: V ermont Castings 2310, Franco Belge 262
Baseburners & Antiques: Glenwood Modern Oak 114
Coal Size/Type: nut and pea

Re: Will EGR Work

PostBy: Rob R. On: Mon Oct 18, 2010 3:43 pm

Abandon the EGR idea. It will reduce the performance of your stove.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Coal Size/Type: Rice/buck
Other Heating: Dad's 1953 EFM Highboy

Re: Will EGR Work

PostBy: SMITTY On: Mon Oct 18, 2010 5:32 pm

Ugh .... EGR valves in cars/trucks. Another useless device not needed to get me to work, but needed to get an inspection sticker in MA. :mad:
SMITTY
 
Stoker Coal Boiler: Patriot Coal - custom built by Jim Dorsey
Hand Fed Coal Stove: Harman Mark III (not currently in use)
Coal Size/Type: Rice / Blaschak anthracite
Other Heating: Oil fired Burnham boiler

Re: Will EGR Work

PostBy: japar On: Mon Oct 18, 2010 7:26 pm

Thanks for all your input, sounds like the best thing to do is leave as is.
japar
 
Hand Fed Coal Stove: Hearthmate
Stove/Furnace Make: Hearthmate
Stove/Furnace Model: combo

Re: Will EGR Work

PostBy: franco b On: Mon Oct 18, 2010 10:55 pm

In order for chimney gas to enter those holes the chimney would have to be back drafting and in that case the stove would be leaking fumes into the room. The chimney is always pulling whether from the stove exhaust or from the holes you drill.
franco b
 
Hand Fed Coal Stove: V ermont Castings 2310, Franco Belge 262
Baseburners & Antiques: Glenwood Modern Oak 114
Coal Size/Type: nut and pea

Re: Will EGR Work

PostBy: coaledsweat On: Tue Oct 19, 2010 8:55 am

This is a bad idea.
coaledsweat
 
Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea

Re: Will EGR Work

PostBy: Wood'nCoal On: Tue Oct 19, 2010 9:17 am

Yep.
Wood'nCoal
 
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert

Re: Will EGR Work

PostBy: Poconoeagle On: Fri Jan 21, 2011 2:31 pm

combustion chamber temps over 900* increases the output of oxides of nitrogen... nox

that stuff lingers in the first two feet or so of our atmosphere and hurts everything that lives below our knees thus the food chain is being affected...

by introducing exhaust gas into the mixture bascially all thats happining is they are displacing oxygen which would make the mixture burn hotter and that imo is more harmful to longevity than anything.....with regards to an engine...

heat kills engines
heat warms us!!! 8-)
Poconoeagle
 
Stove/Furnace Make: Buckwalter & Co. , EFM520
Stove/Furnace Model: No. 28 Glenwood 1880, Alaska

Re: Will EGR Work

PostBy: Berlin On: Fri Jan 21, 2011 3:20 pm

Nox doesn't really harm anything, it's a precursor to ground level ozone formation along with VOC's, this is why it's regulated. heat doesn't kill engines, EGR kills engines.
Berlin
 
Hot Air Coal Stoker Furnace: Will-Burt Combustioneer 77B
Coal Size/Type: Ohio BITUMINOUS pea stoker coal

Re: Will EGR Work

PostBy: I'm On Fire On: Fri Jan 21, 2011 3:46 pm

I have a 1999 Plymouth Neon. The first thing I removed when I started "modding" it was the EGR valve. Then Chrysler's PVO (Performance Vehicle Operations) department got wise to this and started designing the next gen vehicles without the EGR valves.

Adding an EGR system to your stove like others have said will more than likely hurt your stove.
I'm On Fire
 
Hand Fed Coal Stove: DS Machines DS-1600 Hot Air Circulator

Re: Will EGR Work

PostBy: rberq On: Fri Jan 21, 2011 5:09 pm

EGR NO. But how much unburned gas or partially-burned coal (CO instead of CO2) goes up the chimney as waste? How about an oxygen sensor in the flue, to open and close a secondary air valve above the coal and make a more complete burn? Don't ask me how to rig it up, I'm no engineer!
rberq
 
Hand Fed Coal Stove: DS Machine 1300
Coal Size/Type: Nut -- Kimmel/Blaschak/Reading
Other Heating: Oil hot water radiators, propane