Breif update. I have been strugleing with this project a lot. Problems upon problems.
The new insulated hopper works great at not emiting any heat in the trunk. This means all the heat is trapped in the hopper and with that small (10gal) hopper the hopper center temp reaches wood pirolisis temps in just 15miles of driveing on medium load. Althugh preheated wood is good for gas productiun under load, idle is impossible. The rich pirolisis gas first suffocates the engine, and displaces intake air thus cooling the charbed. Cool charbed is firstly unable to crack tars produced above, and secondly, unables quick driveoff. I had s similar problem on my Alubox gasifier on the chevy, but l thod since the MB has a bigger engine, it shuld defeat the offgasing. But no.
A nother problem was refueling. So much smoke emited from the trunk is hard to hide. You cant always find a peacefull place to refuel, or shuld l say, allmost never.
I tryed pure engine grade charcoal in it. Power was low (expected-restriction in the lmbert gasifier is not designed for such small fuel) but man it drove well! Idle, ecceleration… wery nice. And cool! Baffle touchable hot.
Ok. Tryed further. I mixed just enough engine grade char with egg size chunks to clear the voids between the wood.
Power was better, idle too, but after a while it all constipated again.
This sayd, its time for plan B.
I will pull out the gasifier and mount it on a small trailer. There will be a conciderably bigger condensing hopper on it, big cooling and filtration sistem. And room for wood ofcorse. this will be a long trip asembly.
Now, for the every day 20km to work and back drives, l will revisit the dark side. I sure missed it
Anyway, l am still not sure on the design l will use, but l am looking at Kalle gasifiers, main reason being heat and neaded insulation. More of it when l do some more investigation before l make any moves.