Improvement of BSFC by Reducing Diesel Engine Cooling Losses with Emulsified Fuel

This paper describes how cooling loss reductions influence engine performance with emulsified fuel operation. The cooling loss ϕ_w during combustion was determined from the gas pressure in the cylinder at various conditions and the cooling water loss ϕ_c through the whole of the engine cycle was measured by changing the cooling water temperature.

It was found that the indicated thermal efficiency varies with the change in cooling loss ϕ_w and cooling water loss ϕ_c versus the change of cooling water temperature. As a feature of emulsified fuel combustion it was determined that the reduced cooling loss improves the indicated thermal efficiency.