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Zeitgeist 13
Samba Member
Joined: March 05, 2009
Posts: 12115
Location: Port Manteau
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 Posted: Tue Oct 08, 2019 1:37 pm Post subject: Re: Catalytic silencer for diesel heaters |
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If it's going to work, it probably needs to be mounted right to the burner exit. I've long suspected that the cat on my tdi van isn't as effective because it's too far downstream to capture the required heat needed to function properly.
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Casey--
'89 Bluestar ALH w/12mm Waldo pump, PP764 and GT2052
'01 Weekender --> full camper
y u rune klassik? |
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big swifty
Samba Member
Joined: August 21, 2007
Posts: 246
Location: Formally in Republic of VT; now in Hollywood, FL
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| Posted: Tue Oct 08, 2019 3:37 pm Post subject: Re: Catalytic silencer for diesel heaters |
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I have the D2. Never been bothered by diesel odor on startup or while continuously running.
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Evan
1987 Vanagon Syncro // Westfalia pop-top graft // Factory new ALH. 11mm IP. AFN 110 RC 2,3,4 // S7 turbo// Titan P502's
2013 Golf 4d TDI. No mods. Yet.
[1991 Jetta coupe TD. Giles Superpump. Custom tall 5 speed. SOLD |
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SyncroButter
Samba Member
Joined: February 02, 2016
Posts: 383
Location: Seattle
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| Posted: Tue Oct 08, 2019 3:47 pm Post subject: Re: Catalytic silencer for diesel heaters |
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| vwwestyman wrote: |
| SyncroButter wrote: |
| vwwestyman wrote: |
| Those are significantly larger that what would be required/used on one of the little heaters. |
Oh, absolutely.... WAAAAAAY overkill. But also not $330. |
I'm thinking that if one really wanted a catalytic converter, that giant thing (as compared to the small one made for the heater) would probably never get hot enough to work properly. |
Interesting, I never realized that the cat has to get hot in order to function, but that does make sense... I learned something new today!
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Grant
In the stable: 1986 Syncro Westfalia/Bostig, 1989 Doka Tristar, 1974 Vespa Rally 200, 1973 Vespa Primavera 125, 1963 Solex 2200, 1938 Buick Special
Gone but not forgotten: 1989 Porsche 944, 1973 Standard Beetle |
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fxr
Samba Member
Joined: December 07, 2014
Posts: 2323
Location: Bay area CA
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| Posted: Wed Oct 09, 2019 7:03 pm Post subject: Re: Catalytic silencer for diesel heaters |
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Apparently the diesel heaters should have a maximum combustion chamber temperature of 180°C, ~350°F - not nearly hot enough to 'light up' a cat.
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Jim Crowther
1984 1.9l EJ22 Westy Wolfsburg Edition
Vespa GTS 300 |
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DanHoug
Samba Member
Joined: December 05, 2016
Posts: 4777
Location: Bemidji, MN
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| Posted: Thu Oct 10, 2019 5:31 am Post subject: Re: Catalytic silencer for diesel heaters |
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| fxr wrote: |
| Apparently the diesel heaters should have a maximum combustion chamber temperature of 180°C, ~350°F - not nearly hot enough to 'light up' a cat. |
seems so, but there IS a cat made for these heater's exhaust! it probably isn't a super high tech media that operates at lower than normal temp, as it would sky rocket the price beyond the advertised 300Euro.
i don't even have one of these heaters but i'd love to bench test one with some different cats i have around. very easy to see if they are working with an IR camera. something for the long garage project list, eh?
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-dan
60% of what you find on the internet is wrong, including this post.
'87 Westy & '89 Westy both 2.1 4spd
Past projects can be found at--
www.thefixitworkshop.com |
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