Observing the thermodynamic properties in vehicle dynamics of automobiles for improving the ECU performance based on analogy method

In automobiles, cruise speed and fuel flow controls are very essential features to know about the overall energy efficiency of the vehicle system. There should be an effective control system to run the vehicle for maximum efficiency by reducing the losses such as parasitic losses, frictional loses, power train loses, rolling resistances, loses occurs while applying braking. For achieving this, ECU needs complete knowledge about not only the engine performances, but also essentially vehicle behaviour, environmental parameters such as road slope, rolling résistance, and wind resistance. Analogy method is a well known method of estimating the various system parameters and its performances. In this paper, a discussion about how to analyze the vehicle dynamic system behaviour thermodynamically thereby to make ECU works efficiently. In some thermodynamic systems, certain properties can be observed as similar to vehicle´s behaviour in such a way that energy transfers taken among the systems are usually governed by the same algorithm. Some ideal thermodynamic properties such as work, energy, internal energy, enthalpy, entropy are very useful for investigating the overall system performances of the vehicle. In this paper, a selective thermodynamic system is taken to study the vehicle´s dynamics of the automobiles using analogy method. The data required to the ECU such as speed, torque required, acceleration and kinetic energy gained by the vehicle can be calculated through thermodynamic relations such as enthalpy, entropy and internal energy. The various thermodynamic processes and cycles can be made analogue with some selective vehicle dynamic processes. The data obtained from analogy models can be fed into ECU and ECU can manipulate the data to increase the performance of the vehicle.