Driveline dynamics-torque n ang.vel. direction schematic

[marellasunny]

Please find attached a schematic showing the relationship between the 4 main components of a automotive driveline.

I do not understand the reason for the directions of the torques and angular velocities in the schematic. At first, I thought this had something to do with equations and unknowns, but this would not be possible since every variable in there is inter-related.

Could it be that the arrows pointing to left imply "load" and the arrows pointing to the right imply "power" ? I am not quite sure how to understand this.

(Schematic taken from the book Vehicle dynamics by Rajesh Rajamani,chapter 4).

 

[Navin A S]

The arrows in the schematic are showing the direction of the torque and angular velocity, and each component is represented by a different arrow direction. For example, if the engine is the source of the torque and angular velocity, the arrowhead would point away from it. Likewise, if the transmission input shaft is the recipient of the torque and angular velocity, the arrowhead would point towards it. The arrows are also used to indicate the direction of power flow. In other words, if the engine is providing power, the arrowhead would point away from it, and if the transmission output shaft is receiving power, the arrowhead would point towards it.