Controller of power transmission device for vehicle

Abstract

This object aims to provide a controller of a power transmission device for a vehicle, which includes an electric differential section in which loss of acceleration can be suppressed during acceleration of the vehicle. This controller performs inertia torque compensation control, in which a compensation torque (?Tm1) for reducing the inertia torque (Tit) that is generated in a first motor (M1) due to changes in the rotational speed of a second motor (M2) during acceleration of a vehicle, thereby suppressing reduction in power outputted from the second motor (M2) and keeping a sufficient acceleration performance. In conclusion, a controller of the power transmission devices (10, 30) for a vehicle having electric differential sections (18, 34) capable of suppressing loss of acceleration controlling of the power transmission devices (10, 30) for a vehicle having electric differential sections (18, 34) during acceleration of a vehicle can be provided.

Description

technical field [0001] The present invention relates to a control device for a power transmission device for a hybrid type vehicle including an electric differential unit, and particularly to an improvement for suppressing a decrease in acceleration when the vehicle is accelerated. Background technique [0002] There is known a power transmission device for a vehicle including an electric differential portion including a differential mechanism including a first rotating element and a second rotating element connected to an engine as an input rotating member , and a third rotating element as an output rotating member; a first electric motor connected to the first rotating element; and a second electric motor connected to and from the third The power transmission path from the rotating element to the drive wheel, the electric differential portion controls the differential state between the rotational speed of the second rotating element and the rotating speed of the third rota...

AI Technical Summary

Problems solved by technology

[0004] However, the inventors of the present invention have newly discovered that in the prior art as described above, there is a problem that when acceleration is performed using the power output from the second electric motor included in the electric differential unit, due to the rotational inertia of the first electric motor, Accelerates or decelerates as the rotational speed of this second electric motor changes, so part of the power output from the above-mentioned second electric motor is used as inertial torque (moment of inertia) generated in its first electric motor, thereby reducing vehicle acceleration

Images