Abstract
In the present work the effects a Tri-charged technology on a single-cylinder four-stroke diesel engine was investigated at different operating conditions. The supercharger consumes output power, and the turbocharger has turbo-lag; thus, the tri-charged system is introduced to overcome the drawback of both super and turbocharger. The experimental trials were conducted at constant speed engine of 1500 rpm with variable load and compression ratio. The load varies from 0 kg to 12 kg at an interval of 2 kg each, and compression ratio 16–20. The result indicates a significant improvement in the volumetric efficiency due to super, turbo and tri-charged boost air, whereas the thermal efficiency reduces at low and part load due to super and turbocharger for all compression ratios. Further the engine modified with a tri-charged boost the thermal efficiency improved by 0.41 and 0.78% when operate at part and full load capacity. The tri-charging impact on the engine emissions also, CO, HC, NOX are reduced by 0.38, 0.73, and 0.53% respectively for CR18. Therefore the tri-charger can be applied to a single cylinder diesel engine without modification in design, engine performance and emission regulations can be satisfied.
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