Research of the Aerothermopressor Cooling System of Charge Air of a Marine Internal Combustion Engine Under Variable Climatic Conditions of Operation
D. Konovalov, E. Trushliakov, M. Radchenko
Sep 10, 2019
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Key Takeaway Key Takeaway: Aerothermopressor cooling systems for marine internal combustion engines reduce power consumption by 3-10%, increasing engine power by 1-3 % and specific fuel consumption by 2-4 %.
Abstract
Principle of charge air cooling of the internal combustion engine with an aerothermopressor is proposed. It is implemented on the transport ship regular line. Arising thermogasdynamic compression allows increasing the air pressure. The aerothermopressor application in the charge air cooling systems makes it possible to reduce the power consumed by compressors, Nc by 3–10%, thereby the engine power is increased by 1–3% and the specific fuel consumption is decreased by 2–4%. It is established that in case of increasing the ambient air temperature tamb at the turbocharger input the effect from the aerothermopressor used for cooling of the charge air is increased: the turbocharger power reduction ΔNC is increased with a corresponding increase in engine power and a decrease in specific fuel consumption. The relative (related to air flow) water mass flow is determined, which has to be injected at completely evaporated in a thermal overpressure: 0.02–0.05 (2–5%).