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Improved thermal efficiency, reduction in fuel consumption and pollutant emissions from biodiesel fueled diesel engines are important issues in engine research. To achieve these, rapid and perfect air-fuel mixing are the most important requirements. The mixing quality of biodiesel spray with air can be improved by selecting the best injection parameters and better design of the combustion chamber...
The rapid depletion of fossil fuels and environmental concerns make alternative fuels such as biodiesel more attractive. Biodiesel has properties comparable to ultra low sulfur diesel (ULSD), however certain properties of biodiesel such as viscosity, calorific value, density and volatility differ from ULSD. These properties strongly affect injection, air-fuel mixing and thereby combustion and performance...
In this experimental study, the influences of re-entrant combustion chamber geometry on a diesel engine emission, performance and on the combustion were investigated using Pongamia Oil Methyl Ester (POME). For this purpose, the pistons with Toroidal Re-entrant Combustion Chamber (TRCC) and Shallow Depth Re-entrant Combustion Chamber having the same volume as that of the baseline Hemispherical open...
The present work investigates the effect of varying the combustion chamber geometry on the performance of a diesel engine using biodiesel in terms of brake specific fuel consumption, brake thermal efficiency as well as exhaust emissions and combustion characteristics. Engine tests have been carried out using a blend of 20% Pongamia Oil Methyl Ester (POME) with standard diesel as fuel and with three...
This manuscript describes in detail the development of an avatar robot for human companion tasks. The mobile robot embodies a remote human to have communications with other human while walking in close proximity to the mobile robot. The robot takes the role of a physical interface to deploy mobility, sensors and telepresence with personification throughout some behaviours of the remote human. Behaviours...
Bed sores, a common problem among immobile patients these days occur as blood supply to the skin is cut off in patient lying on same posture for a prolonged period of time. If left untreated, the skin can break open and become infected. Experiments performed demonstrated that the time over which a patient lies in the same posture on the bed is directly proportional to bed surface temperature. Also,...
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