Thermal analysis in combustion engine cooling car system for using Mild Hybrid drive

Main goal of article was project of automatic, preheating engine block system, which enable shortening duration of fuel injection after starting combustion engine. It will cause reduction of air pollution during catalyst heating-up phase. The automatic, preheating engine block system should have electric regulation of cooling water temperature, which is realized by electric cooling water pump. Independent control of pump speed and application extra heating-up of cooling water makes possible heating cooling water when engine is turn off and control engines temperature during engine running (admission of increase temperature to 110°C). Within the framework of this work, there have been done calculations, measurements and researches whose aim was to determine the real parameters of cooling system structure for researched engine Fiat Palio Weekend 1,2 8V. Temperature measurements have been done with the help of camera ThermaCam T400 Flir and thermocouples PT 100 whereas flow rate measurements have been done with the help of turbine flow-meter Vision 2008 4F 22 with Hall's converter. Measurements was repeated several times to get reliable results. The carried out measurements allowed us to create thermal maps and flow rate characteristics of researched engines