Abstract ▼ AI-Helper

During acceleration or deceleration state in vehicle operation, the efficiency of automatic transmission is affected by the power loss due to the moments of inertia of rotating elements. In this paper, the relations between efficiency behavior at steady state and thats of transient state are formu...

During acceleration or deceleration state in vehicle operation, the efficiency of automatic transmission is affected by the power loss due to the moments of inertia of rotating elements. In this paper, the relations between efficiency behavior at steady state and thats of transient state are formularized. To verity that relations, new device for measuring engine torque between engine and transmission is introduced. By using thats device, it is verified that the efficiency behavior at transient state is able to be calculated from the efficiency behavior and moments of inertia of relating elements. In addition portions of power loss due to moments of inertia of rotating elements are acquired from the result of experiments.