Energy Analysis on the complete model

In the complete model, there is only one power input at the left extremity of the sketch shown in the figure Figure 26. However, many internal powers have to be taken into account:

• : 46 Mechanical Resistive Powers,

• : 17 Mechanical Capacitive Powers,

• : 13 Mechanical Inertial Powers.

We can then write the power balance equation as:

Since it would be too time-consuming to check with post-processed variables, the tool provides you with a direct view of all the necessary variables you select in the Power, Energy, Activity window.

For such a complex model, we prefer selecting them by R, C, I types of energy variables:

Figure 29: Gearbox model, Energy [J] as Bar Graphs at t=1000 s - R elements

We can directly detect that two R powers are largely predominant over of all other R powers. They are associated with the aerodynamics drag force and rolling friction resistance of the car component.

Figure 30: Gearbox model, Energy [J] as Bar Graphs at t=1000 s - C elements

One C power is also greater than all other C powers. It corresponds to the thermal mass used to represent the mean temperature of the transmission components that collects all the thermal heat exchanges due to the power losses.

Figure 31: Gearbox model, Energy [J] as Bar Graphs at t=1000 s - I elements

One I power is dominant. Its the mechanical vehicle inertia that corresponds to the kinetic energy of the vehicle.

This demonstrates the validity of the framework on a large system and therefore its systemic scalability.