Thaum cov qib methane tshaj qhov pib tawg los yog poob qis dua qhov kev txwv qis, Lub combustion yog maj mam vim tsis muaj methane lossis oxygen. Nyob rau hauv qhov tawg ntau, txawm li cas los xij, methane-to-oxygen ratio yog qhov zoo tshaj plaws rau combustion, ua rau muaj hluav taws kub heev.
Yog lub sijhawm no, cov tshuaj tiv thaiv yuav tshwm sim nyob rau hauv ib cheeb tsam txwv thiab xav tau kev tso cua sov tseem ceeb, qhov tshwm sim gases nthuav dav sai, culminating nyob rau hauv ib qho kev tawg.