Patent ID: 9649926
Date: 2017-05-16
CPC Classifications: B60K,B60W,F16H,Y02T,Y10S,Y10T

Claim:
1. A power transmission device for a hybrid vehicle, comprising: a transmission device including a first power transmission component to which a rotation shaft of an engine is connected; a differential device including a plurality of rotation components that perform differential rotation thereof and including a first rotation component connected to a second power transmission component of the transmission device, a second rotation component connected to a rotation shaft of a first rotating electric machine, and a third rotation component connected to a rotation shaft of a second rotating electric machine and a drive wheel; a gear shift adjustment device that adjusts the transmission device to a neutral state where transmission of power between the first power transmission component and the second power transmission component is not allowed or to a state where the transmission of power between the first power transmission component and the second power transmission component is allowed; and an electronic control unit configured to include a first step of shifting the transmission device from the neutral state to a target transmission gear ratio or to a target gear shift stage after the start-up of the engine is completed in response to an accelerator opening degree change rate, a second step of increasing rotating speed of the first rotating electric machine, and a third step of controlling the start-up of the engine of which rotating speed is increased with an increase in the rotating speed of the first rotating electric machine, at a time the engine is started up in an EV travel mode of transmitting the power of at least one of the first and second rotating electric machines to the drive wheel.