Patent ID: 8620509
Filing Date: 2013-12-31
Classification: B60K,B60W,Y02T

Abstract:
1. A powertrain of a hybrid vehicle comprising: a first planetary gear set including a first sun gear, a first carrier, and a first ring gear; a second planetary gear set including a second sun gear connected with the first sun gear, a second carrier, and a second ring gear; an engine connected to the first carrier; a first motor/generator connected to the first ring gear; and a second motor/generator connected to the second sun gear, wherein a controller is configured to execute a split mode where the first carrier and the second ring gear are connected the controller configured to: determine a target torque of the second motor/generator based on a gear ratio of the first sun gear and the first ring gear, a gear ratio of the second sun gear and the second ring gear, a demand torque of the powertrain, and an output torque of the first motor/generator; determine a compensation value based on a target speed of the engine and a current speed of the engine; and determine a final torque of the second motor/generator based on the target torque of the second motor/generator and the compensation value, and controlling the second motor/generator according to the final torque of the second motor/generator.