Bit of a techy question this...
I was just looking at the emissions results from the recent MOT test I had on the Merc.
It passed (woot!) but out of curiosity I compared the gas test figures with my girlfriend's Golf GTi and my old Volvo 264. The HC levels on the Benz are WAY higher than either of the other two cars. Here are my figures:
CO: 0.05%
HC: 1037 ppm
CO2: 2.21%
O2: 16.94%
Lambda: 4.90
It's low enough to pass the MOT but the Golf's HC reading is 120ppm, and the old Volvo is something similar.
I know both of these cars are fuel injected and I have a dirty ol' carb, but does anyone know if I'd be able to get my HC levels down much further? When I see all those unburnt hydrocarbons being wasted it makes me think that they'd be far more use to me being burnt in the combustion chamber! ;D
I was just looking at the emissions results from the recent MOT test I had on the Merc.
It passed (woot!) but out of curiosity I compared the gas test figures with my girlfriend's Golf GTi and my old Volvo 264. The HC levels on the Benz are WAY higher than either of the other two cars. Here are my figures:
CO: 0.05%
HC: 1037 ppm
CO2: 2.21%
O2: 16.94%
Lambda: 4.90
It's low enough to pass the MOT but the Golf's HC reading is 120ppm, and the old Volvo is something similar.
I know both of these cars are fuel injected and I have a dirty ol' carb, but does anyone know if I'd be able to get my HC levels down much further? When I see all those unburnt hydrocarbons being wasted it makes me think that they'd be far more use to me being burnt in the combustion chamber! ;D