Thermal engine modeling

The file focused on the phenomenology of heat transfer in internal combustion engines. This file, a complement to the , describes the modeling of the engine in its entirety, with the exception of boundary conditions and, in particular, the flow input from internal combustion in the cylinders. It should be remembered that the final aim is to produce a global energy model of a diesel engine, enabling a complete engine with its cooling loops to be simulated. This model, associated with a mission profile and an external temperature environment, should make it possible to simulate the engine's thermal evolution over time, as well as its fuel consumption, for a given architecture and cooling loop control.

The file showed the possible choices for thermal and fluidic analysis of the motor as a whole. The nodal concept has been adopted, transposing all the equations to be processed into a network of conductances, capacitances and sources analogous to an electrical network. In the same spirit, it is necessary to include the thermal effect of combustion and friction. This document therefore describes a simple and effective method for taking combustion-related heat sources into account.

This model of internal engine heat sources can also be used separately from the proposed model, with slight modifications.