25-01-2012, 05:05 PM
The effect of biodiesel and bioethanol blended diesel fuel on nanoparticles
and exhaust emissions from CRDI diesel engine
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Introduction
Since diesel engines have higher thermal efficiency than gasoline
engines, they have an advantage in reducing global warming
and in using less fossil fuel. However, they emit more diesel PM
(particulate matter) than gasoline engines because of the relatively
low rate of utilization of air. The after-treatment of the diesel engine
exhaust was a very effective method to reduce CO (carbon
monoxide) and THC (total hydrocarbon) emissions and the SOF
(soluble organic fraction) of PM emissions.
Results and discussion
The ECE R49 test cycle consists of engine loads of 25%, 50%, 75%
and 100% at 2100 and 3800 rpm, which show the engine’s
maximum torque, maximum output, and idling modes (750 rpm;
modes 1, 7, and 13). Except for low-load driving conditions (modes
2 and 12), the fuel consumption rate was 220–400 kg/kWh at each
mode.
