Experimental investigation to reduce CO2 emission in a single cylinder CI engine using low carbon fuel blend with Karanja oil methyl ester and amine injection in the exhaust manifold

The present study investigates various methods for reduction of CO2 emission in a Karanja oil methyl ester (KOME) fuelled single cylinder CI engine. Combustion of KOME emits more CO2 due to longer carbon chain. The reduction in CO2 emission was done in three phases. In the first phase, low carbon pine oil (PO) fuel was blended with KOME in equal volume. The results indicated 7% reduction in CO2 emission for KOME-PO blend compared to KOME. In the second phase, methanol, n-butanol and acetone were blended on 20% volume basis with KOME-PO blend for further CO2 reduction. Mono ethanol amine (MEA) was injected in the exhaust for achieving minimum CO2 emission in the third phase. KOME-PO+MEA injection emits minimum CO2 emission compared to other blends. However, considering NO-CO2 trade-off, KOME-PO + methanol with amine injection is optimum for simultaneous reduction of both the pollutants.