Investigation into the Energy Consumed in Cooling a High Performance Diesel Engine and the Way It Can Be Reduced, Especially by Heat Insulation

摘要

The effects of improved heat insulation on engine operation, cycle characteristics, combustion and cooling were investigated. Results indicate that maximum reduction in fuel consumption of 6.5% can be achieved with an ideal insulation; this figure can be improved to about 10% with turbo or Rankine hybrid engines. However the heat insulation that can be realized in practice together with the combustion difficulties encountered renders this type of engine non-competitive. Predictions on the thermal loads, fuel consumptions and heat rejection associated with highly turbocharged engines are given.