Intelligent heat management of conventional vehicle propulsion systems can lead to further reduction of fuel consumption. Especially, the application of variable pumps, actuators and sensors establishes new possibilities. Simulation can help to evaluate different thermal management measures. Control strategies can be developed and the influence on the engine heat-up can be analyzed.
In a first step, comprehensive thermal measurements on a test vehicle are performed and serve as groundwork for fluid-thermal simulations of the operating fluid circuits and the included components.
Based on this 1D fluid-thermal simulation model, solutions for a demand-controlled coolant flow, directed use of heat sources and the intelligent reduction of thermal masses in the warm-up phase are discussed and virtually tested. With emphasis on the NEDC and FTP driving cycles, the impact on fuel consumption reduction is calculated.