Modeling and simulative analysis of shift control for at powertrain on the car

Abstract

The problem with this power transmission system is related to increased fuel consumption, and small performance. The above issues are decisive for the management of the AT transmission system. In other words, determining when to shift gears is one of the factors that determine the advantages of this system. In this paper, the authors focus on building a model consisting of the engine, hydraulic torque converter, gearbox, final drive and differential, drive wheels, and vehicle body dynamic system and propose a gear shift control algorithm for AT based on the throttle opening level (%) and the longitudinal velocity of the car. Finally, the effectiveness and advantage of the proposed control schemes are indicated by illustrative results through MATLAB/SIMULINK. This approach is the basis for research on improving performance and optimizing fuel for automotive powertrains.

Keywords

• automatic transmission
• powertrain
• vehicle dynamnic