Patent ID: 7328091
Filing Date: 2008-02-05
Classification: B60K,B60L,B60W,Y02T

Abstract:
1. A hybrid vehicle that outputs power to a drive shaft linked with drive wheels, said hybrid vehicle comprising: an internal combustion engine; an electric power-dynamic power input-output module that transmits at least part of power from said internal combustion engine to said drive shaft through input and output of electric power and dynamic power; a motor that inputs and outputs power from and to said drive shaft; an electric accumulator that transmits electric power to and from said electric power-dynamic power input-output module and said motor; and a controller that, in response to a driver's release of the accelerator requires a driving force demand to said drive shaft subsequent to the driver's actuation of the accelerator, and sets a specific drive point of said internal combustion engine to attain output of a driving force corresponding to the driving force demand to said drive shaft, based on the driving force demand and a discharge limit of said electric accumulator, and controls said internal combustion engine, said electric power-dynamic power input-output module, and said motor to drive said internal combustion engine at the preset specific drive point and to ensure output of the driving force corresponding to the driving force demand to said drive shaft, wherein said controller calculates a first revolution speed of said internal combustion engine from a smoothed driving force, which is obtained by smoothing the driving force demand, and the discharge limit of said electric accumulator, and sets the calculated first revolution speed to a target revolution speed of said internal combustion engine at the specific drive point.